MEHDI AHMADI NAJAFABADI
Professor
Department of Mechanical Engineering
Construction & Manufacturing
Department of Mechanical Engineering
Construction & Manufacturing
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Email:
ahmadin
aut.ac.ir
aut.ac.irPhone:
64543431
h-index (Scopus):
33
Citations (Scopus):
2916
Supervised PhD Theses
#
Thesis title
By
Date
1
Identification of mechanical behavior of composite tubes under static axial compressive load using acoustic emission method
Sajad Alimirzaeifaradonbeh & Mehdi Ahmadi Najafabadi
October 2022
2
Online Monitoring of Delamination During Drilling of Laminated Composites Using Acoustic Emission
Mehrdad Nazmdar & Mehdi Ahmadi Najafabadi
October 2022
Supervised MSc Theses
#
Thesis title
By
Date
1
FEM Simulation of welded st37 to st52 for calculation of residual stress and validation with ultrasonic method
Mahdi Mirsafari & Mehdi Ahmadi Najafabadi
February 2024
2
Residual Stress Measurement in Dissimilar Weld Joint of Two Carbon Steel Plates With Different Carbon Contents
Amirhossein Rasfijani & Mehdi Ahmadi Najafabadi
July 2023
3
the use of acoustic emission for investigation of bending fatigue behavior of fixed_end Aluminum specimen under bending cyclic loading
Ali Bastani Lay & Mehdi Ahmadi Najafabadi
May 2023
4
Analysis of failure mechanism of the filament wound composite tubes under lateral quasi-static loading
Parsa Ghahremani & Mehdi Ahmadi Najafabadi
January 2023
5
Investigating the Fatigue Strength of Glass / Epoxy Repaired by Resin Injection Using Ultrasonic
Faraz Haddad & Mehdi Ahmadi Najafabadi
March 2022
6
Study of restoration of fatigue strength of delaminated glass/epoxy composite after being repaired by using acoustic emission technique
Amirmahdi Mohammad Hosseini & Mehdi Ahmadi Najafabadi
March 2022
7
Investigation and Analysis of Damage for Filament Wound Composite Tubes by Continuous Damage Models and Acoustic Emission under Lateral Loading
Amir Bani Mohammad Ali & Mehdi Ahmadi Najafabadi
February 2022
8
Experimental investigation of delamination in drilled glass/epoxy composites under mixed tensile and bending cyclic loading using acoustic emission method
Amirhussain Baigi & Mehdi Ahmadi Najafabadi
September 2021
9
Investigation of specific energy absorption by thin-walled aluminum and glass fiber/epoxy reinforced aluminum tubes under quasi static lateral compression
Ehsan Mirzaei & Mehdi Ahmadi Najafabadi
September 2021
10
The study of buckling of laminated composites repaired by resin injection using acoustic emission
Atabak Pourdadash Fardnam & Mehdi Ahmadi Najafabadi
August 2021
11
Design optimization of dental implants base
Ramin Niknafs & Mehdi Ahmadi Najafabadi
September 2020
12
Experimental study and Finite element simulation of energy absorption and failure modes of CFRP filament wound tube and its Acoustic Emission Inspection
Zahra Nozarijouybari & Mehdi Ahmadi Najafabadi
December 2019
13
Numerical And Experimental Study For Geometrical Effect Of Fiber Glass Structure In Composite Tubes Under The Axial Quasi Static Loading
Arash Khodaei & Mehdi Ahmadi Najafabadi
November 2019
14
Ultrasonic hoop stress calculation in autoferttaged AL 1050 pipe
Hamed Safi Khanlu & Mehdi Ahmadi Najafabadi
September 2019
15
analyzing mechanical properties in reinforced composites by electrospun nanofibers
Mohammad Ehsandoost & Mehdi Ahmadi Najafabadi
July 2019
16
The Effect of Higher-order Elastic Coefficients of Elasticity of Metal under Tensile load on the Acoustoelastic Constant
Nazanin Morakabi Esfahani & Mehdi Ahmadi Najafabadi
October 2018
17
Application of ultrasonice Waves for the Measurement of Residual Stress and bending of polyethylene pipes
Khashayar Khosravian & Mehdi Ahmadi Najafabadi
February 2018
18
Prediction of residual strength of composite laminates by means of acoustic emission technique
Mahdi Habibi & Mehdi Ahmadi Najafabadi
February 2018
19
Application of Critically Refracted longitudinal Waves for Residual Stress Measurement in the autofretted tubes
Mehdi Iskandari & Mehdi Ahmadi Najafabadi
February 2018
20
Polymer Composite Samples Health Monitoring using Lamb Wave Method under Delamination
Hamidreza Badakhshian & Mehdi Ahmadi Najafabadi
October 2017
21
The effect of Nylon6,6 nanofibers on delamination of glass/epoxy composite using Acoustic Emission
Ali Gholizadeh & Mehdi Ahmadi Najafabadi
September 2017
22
: Numerical and experimental investigation of failure in drilled glass/epoxy composites under bending cyclic loading using acoustic emission method
Naeim Akbari Shahkhosravi & Mehdi Ahmadi Najafabadi
July 2017
23
Investigation of the parameters affecting of wave propagation in glass/epoxy composite
Mostafa Shirdel & Mehdi Ahmadi Najafabadi
July 2017
24
Investigation of induced damages inbuckling of laminate composites using acoustic emission
Anvar Soukhani Darisofla & Mehdi Ahmadi Najafabadi
February 2017
25
Investigation of fatigue failure mechanisms of a notched aluminum plate repaired with a composite patch using acoustic emission method
Abdollah Maleki & Mehdi Ahmadi Najafabadi
February 2017
26
Ultrasonic residual stress measurement in upset weld
Ali Reza Faraji Alamooti & Mehdi Ahmadi Najafabadi
October 2016
27
Ultrasonic NDT data reconstruction, visualization and analysis in autoCAD2000
Seyed Ali Hosseini Kazerooni & Mehdi Ahmadi Najafabadi
February 2016
28
Separation of Impact Damage Mechanisms on Laminar Composite Using Acoustic Emission Method
Seyed Ali Mahdian Ahi & Mehdi Ahmadi Najafabadi
October 2015
29
Study on residual stresses in welding by LTT fillers
Kaveh Azizpour & Mehdi Ahmadi Najafabadi
October 2015
30
Determination of Acoustoelastic Coefficients in Welding Metal and HAZ in Austenitic Stainless Steel Welding
Iman Rahimi & Mehdi Ahmadi Najafabadi
October 2015
31
Measurement of Welding Residual Stress of Austenitic Stainless Steel By Using LCR Ultrasonic Waves by Eliminating Approximation of Accoustoelastic
Shayan Nejadshamsi & Mehdi Ahmadi Najafabadi
September 2015
32
Identification damage mechanism in composite using acoustic emission and finite element methods
Reza Mohammadi & Mehdi Ahmadi Najafabadi
September 2015
33
Investigation of failure mechanisms of a notched aluminum plate repaired with a composite patch using acoustic emission method
Mir Mohammad Mousavi Nasab & Mehdi Ahmadi Najafabadi
September 2015
34
Investigation of delamination in FMLs and verification by Acoustic Emission method
Jaber Esmaeeli Karati & Mehdi Ahmadi Najafabadi
October 2014
35
Simulation of longitudinal residual stress in welded austenitic stainless steel plates and evaluation with x-ray diffraction and ultrasonic meth
Mohammad Eftekhary & Mehdi Ahmadi Najafabadi
October 2014
36
Theoretical study for detection of inter laminar defects of fiber-reinforced polymer composites by three-point bending using acoustic emission method
Borhan Sadeghi & Mehdi Ahmadi Najafabadi
October 2014
37
Investigation delamination in FRP composites under cyclic loading by acoustic emissin
Milad Saeedifar & Mehdi Ahmadi Najafabadi
September 2014
38
Evaluation of Welding residual stress in austenite stainless steel using Lcr ultrasonic waves
& Mehdi Ahmadi Najafabadi
January 2014
39
Monitoring of Damage Mechanisms in Mixed Mode I/II Loading on Glass/Epoxy Composites by Acoustic Emission Method
Hamidreza Fazaeli & Mehdi Ahmadi Najafabadi
January 2014
40
Discrimination of Acoustic Emission Signals during Drilling Process and Semi-Static Loading (punching)
Navid Zarif Karimi & Mehdi Ahmadi Najafabadi
October 2013
41
Residual stress evaluation by finite element and ultrasonic method in a butt weld joint
Seyedali Sadeghi & Mehdi Ahmadi Najafabadi
October 2013
42
Monitoring of damage mechanism in mode-II loading for a glass/polyester composite using acoustic emission
Parinaz Belalpour Dastjerdi & Mehdi Ahmadi Najafabadi
October 2013
43
FEM and AE fracture analysis of glass/epoxy composite laminate under bending load
& Mehdi Ahmadi Najafabadi
February 2013
44
Development of application of ultrasonic method for measurement of residual stresses in butt weld joint
& Mehdi Ahmadi Najafabadi
October 2012
45
stress evaluation within different depth ranges of a stainless steel plate by LCR wave
Omid Afzali Naniz & Mehdi Ahmadi Najafabadi
October 2012
46
Theoretical and Experimental Damage Investigation of Composite Laminate under Three Point Bending using Acoustic Emission
& Mehdi Ahmadi Najafabadi
October 2012
47
Final Element Analysis and Measurement of Residual Stress by Ultrasonic Method in Heat Affected Zone of a Wellded Connectin
& Mehdi Ahmadi Najafabadi
September 2012
48
The effect of welding sequences on welding distortion in an aluminium pressure vessel
& Mehdi Ahmadi Najafabadi
October 2011
49
Diagnosis of fluids velocity coefficient in leakage using acoustic emission
& Mehdi Ahmadi Najafabadi
October 2011
50
The study of Temper bead welding technique on the mechanical properties of welds
& Mehdi Ahmadi Najafabadi
September 2011
51
Monitoring of delamination in composite materials during drilling using acoustic emission
& Mehdi Ahmadi Najafabadi
September 2011
52
Identification of damage modes in composite materials by analyzing acoustic emission signals
& Mehdi Ahmadi Najafabadi
September 2011
53
Study of the effect of residual stress in metals on the propagation rate of elastic waves
Mohammad Tavosian & Mehdi Ahmadi Najafabadi
January 2011
54
measurement of stress in metals using ultrasonic waves
& Mehdi Ahmadi Najafabadi
September 2010
55
Studying leak in valves of Internal Combustion Engine Using Acoustic Emission
Sadegh Hosseini & Mehdi Ahmadi Najafabadi
September 2010
56
Monitoring delamination mode I in composite by the acoustic emission technique
Alireza Souri & Mehdi Ahmadi Najafabadi
July 2010
57
monitoring crack growth by the acoustic emission technique
Hadi Mohammadyari & Mehdi Ahmadi Najafabadi
July 2010
58
Experimental study of delamination in glass/epoxy and glass/polyester laminated composites and sandwich composites by acoustic emission technique
Milad Hajikhani & Mehdi Ahmadi Najafabadi
June 2010
59
fracture toughness evalution by the acoustic emission technique
Javad Teymuri Shandi & Mehdi Ahmadi Najafabadi
January 2010
60
Experimental study of onset of plastic deformation in steel by using acoustic emission technique
Meysam Akbari & Mehdi Ahmadi Najafabadi
January 2009
61
RECONSTRUCTION OF ACOUSTIC EMISSION WAVES CAUSED BY LEAKAGE
Amir Ahmadi & Mehdi Ahmadi Najafabadi
September 2008
62
MEASUREMENT OF RELEASED ENERGY IN CRACK GROWTH BY THE ACOUSTIC EMISSION
Saeed Haji Ghasemi & Mehdi Ahmadi Najafabadi
May 2008
63
IDENTIFICATION OF MECHANISM OF AE GENERATION IN FRICTION PROCESSES
Sajad Mostafavi & Mehdi Ahmadi Najafabadi
March 2008
64
STUDY OF STRESS CORROSION WITH ACOUSTIC EMISSION
Hossein Heidari Kalhroodi & Mehdi Ahmadi Najafabadi
September 2007
65
PROCESSING OF A SIGNALS OBTAINED FROM AE EXPEERIMENT ON A COMPOSITE PLATE USING WAVELET METHOD
Vahid Ansari & Mehdi Ahmadi Najafabadi
March 2007
66
ULTRASONIC STRESS MEASUREMENT
Siamak Akhshik & Mehdi Ahmadi Najafabadi
February 2007
67
EXPERIMENTAL STUDY OF STRESS MEASUREMENT IN BOLTS WITH ULTRASONIC WAVES
Seyed Mohamad Atifeh & Mehdi Ahmadi Najafabadi
November 2006
68
STUDY OF ACOUSTIC EMISSION WAVE PROPAGATION IN PLATES
Seyed Mohammadnaser Saber & Mehdi Ahmadi Najafabadi
November 2006
69
EXPERIMENTAL STUDY OF DRILLING REINFORCED PLASTICS AND INVESTIGATION OF DAMAGE ZONE BY NDT METHODS
Peyman Moradi & Mehdi Ahmadi Najafabadi
May 2006
Books
#
Title
Author(s)
Publisher country
publication date
version
Portal Records
1
condition Monitoring
Mehdi Ahmadi Najafabadi
Iran (Islamic Republic of)
September 2012
1
2
Using Acoustic Emission to Evaluate Fracture Toughness Energy Release Rate (GI) at Mode I Delamination of Composite Materials
Amir Refahi Oskouei, Andrea Zucchelli, Mehdi Ahmadi Najafabadi, Giangiacomo Minak
none
February 2012
1
Journal Papers
Portal Records
1
Mehdi Farajpour, Mehdi Ahmadi Najafabadi, "In-plane shear damages consideration of hoop wound composite cylinders using acoustic emission method", JOURNAL OF COMPOSITE MATERIALS, January 2024
Vol. 58,
Num. 7,
Page 851-866,
January 2024,
2
Akbar Javdani, Mehdi Ahmadi Najafabadi, "Achieving Homogeneous Distribution and Dispersion of Al2O3np Nanoparticles within 316L Matrix for Production of Metal Matrix Nanocomposites via Blended Powder Semisolid Forming", ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING, December 2023
Vol. 0,
Num. 0,
Page 1-17,
December 2023,
3
Akbar Javdani, Mehdi Ahmadi Najafabadi, "Experimental Optimization of Blended Powder Semisolid Forming Parameters for Production of 316L Stainless Steel Nanocomposites Reinforced with Al2O3np", JOM, November 2023
Vol. 76,
Num. 3,
Page 1245-1261,
November 2023,
4
Amir Mohammad Salehi, Hamed Safikhanlu, Mehdi Ahmadi Najafabadi, "Ultrasonic and FEM residual stress measurement in dissimilar St37–St52 welding", PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE, September 2023
Vol. 237,
Num. 19,
Page 4467-4479,
September 2023,
5
Mehdi Ahmadi Najafabadi, Sajad Alimirzaeifaradonbeh, Amir Bani Mohammad Ali, Lotfollah Pahlavan, "Buckling assessment of GFRP and carbon fiber-reinforced plastic filament-wound tubes using an acoustic emission-based methodology", JOURNAL OF REINFORCED PLASTICS AND COMPOSITES, August 2023
Vol. 0,
Num. 0,
Page 1-15,
August 2023,
6
Parsa Ghahremani, Mehdi Ahmadi Najafabadi, Sajad Alimirzaeifaradonbeh, Mohammad Fotouhi, "Acoustic Emission-Based Analysis of Damage Mechanisms in Filament Wound Fiber Reinforced Composite Tubes", SENSORS, August 2023
Vol. 23,
Num. 6994,
Page 1-24,
August 2023,
7
Mehdi Farajpour, Mehdi Ahmadi Najafabadi, "Investigation of crack propagation in filament wound composite samples of Mode-I by using acoustic emission technique", JOURNAL OF COMPOSITE MATERIALS, August 2023
Vol. 0,
Num. 0,
Page 1-11,
August 2023,
8
Milad Saeedifar, Hamed Saghafi, Hesam Saghafi, Mehdi Ahmadi Najafabadi, "Experimental and numerical study of fatigue behavior of multi-layer carbon/epoxy composite reinforced with nano-fiber", , March 2023
Vol. 54,
Num. 12,
Page 11-11,
March 2023,
9
Sajad Alimirzaeifaradonbeh, Mehdi Ahmadi Najafabadi, Ali Nikbakht, "Investigation of mechanical properties and failure behavior of CFRP filament-wound composites using an acoustic emission-based methodology and numerical simulation", FIBERS AND POLYMERS, February 2023
Vol. 24,
Num. 0,
Page 693-707,
February 2023,
10
Sajad Alimirzaeifaradonbeh, Mehdi Ahmadi Najafabadi, Ali Nikbakht, Lotfollah Pahlavan, "Investigation of energy absorption capacity of 3D filament wound composite tubes: experimental evaluation, numerical simulation, and acoustic emission monitoring", MECHANICS OF ADVANCED MATERIALS AND STRUCTURES, January 2023
Vol. 0,
Num. 0,
Page 1-12,
January 2023,
11
Amir Bani Mohammad Ali, Sajad Alimirzaeifaradonbeh, Mehdi Ahmadi Najafabadi, "Evaluation of Damage of Filament Wound Composite Tubes under Lateral Loading by Acoustic Emission Method and Finite Element Simulation", Modares Mechanical Engineering, November 2022
Vol. 22,
Num. 11,
Page 647-655,
November 2022,
12
Javad Sharifi Ghaderi, Mehdi Ahmadi Najafabadi, "Acoustic Emission Characteristics Determination for Online Structural Monitoring of Fatigue Crack Growth in Aluminum Alloy 2025", International Journal of Reliability, Risk and Safety: Theory and Application -IJRRS, November 2022
Vol. 5,
Num. 1,
Page 37-42,
November 2022,
13
Samira Karami, Ramin Khamedi, Hamed Azizi, Mehdi Ahmadi Najafabadi, "Investigation of the effect of nanoparticles on wood-bioplastic composite behavior using the acoustic emission method", JOURNAL OF COMPOSITE MATERIALS, October 2022
Vol. 57,
Num. 1,
Page 23-34,
October 2022,
14
Atabak Pourdadash Fardnam, Abdullah Maleki Dizaj, Mehdi Ahmadi Najafabadi, "Investigation of buckling of laminated composites repaired by resin injection using acoustic emission and cohesive zone simulation method", COMPOSITE STRUCTURES, August 2022
Vol. 298,
Num. 116008,
Page 1-9,
August 2022,
15
Sajad Alimirzaeifaradonbeh, Mehdi Ahmadi Najafabadi, Arash Khodaei, "Characterization of The Damage Mechanism of Glass/Epoxy Composite Tubes Under Quasi Static Axial Loading Using Acoustic Emission Monitoring", APPLIED COMPOSITE MATERIALS, July 2022
Vol. 29,
Num. 0,
Page 1911-1936,
July 2022,
16
Sajad Alimirzaeifaradonbeh, Mehdi Ahmadi Najafabadi, Ali Nikbakht, Lotfollah Pahlavan, "Damage mechanism characterization of plus/minus 35 degree and plus/minus 55 degree FW composite tubes using acoustic emission method", INTERNATIONAL JOURNAL OF DAMAGE MECHANICS, April 2022
Vol. 0,
Num. 0,
Page 1-24,
April 2022,
17
Sajad Alimirzaeifaradonbeh, Mehdi Ahmadi Najafabadi, Amir Bani Mohammad Ali, "Investigation of failure mechanism of the composite tubes made by filament winding process by acoustic emission method", , April 2022
Vol. 54,
Num. 6,
Page 7-24,
April 2022,
18
Milad Dehnad, Mehdi Kamali Dolatabadi, Mehdi Ahmadi Najafabadi, Ali Asghar Asgharian Jeddi, "Damage characterization of woven fabric composite using acoustic emission method: warp and bias directions", JOURNAL OF THE TEXTILE INSTITUTE, April 2021
Vol. 0,
Num. 0,
Page 1-9,
April 2021,
19
Reza Mohammadi, Mehdi Ahmadi Najafabadi, Hamed Saghafi, Milad Saeedifar, Dimitrios Zarouchas, "A quantitative assessment of the damage mechanisms of CFRP laminates interleaved by PA66 electrospun nanofibers using acoustic emission", COMPOSITE STRUCTURES, December 2020
Vol. 258,
Num. 0,
Page 1-12,
December 2020,
20
Reza Mohammadi, Mehdi Ahmadi Najafabadi, Hamed Saghafi, Milad Saeedifar, Dimitrios Zarouchas, "The effect of mode II fatigue crack growth rate on the fractographic features of CFRP composite laminates: An acoustic emission and scanning electron microscopy analysis", ENGINEERING FRACTURE MECHANICS, November 2020
Vol. 241,
Num. 0,
Page 1-14,
November 2020,
21
Hamed Safikhanlu, Mehdi Ahmadi Najafabadi, Sajad Alimirzaeifaradonbeh, "Investigation of autofrettage process in Al 1050 specimens by finite element and experimental method", , August 2020
Vol. 51,
Num. 3,
Page 109-117,
August 2020,
22
Reza Mohammadi, Mehdi Ahmadi Najafabadi, Hamed Saghafi, Dimitrios Zarouchas, "Fracture and fatigue behavior of carbon/epoxy laminates modified by
nanofibers", COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, July 2020
Vol. 137,
Num. 0,
Page 1-11,
July 2020,
23
Reza Mohammadi, Mehdi Ahmadi Najafabadi, Hamed Saghafi, Dimitrios Zarouchas, "Mode-II fatigue response of AS4/8552 carbon /epoxy composite laminates
interleaved by electrospun nanofibers", THIN-WALLED STRUCTURES, May 2020
Vol. 154,
Num. 0,
Page 1-12,
May 2020,
24
Hamed Safikhanlu, Sajad Alimirzaeifaradonbeh, Mehdi Ahmadi Najafabadi, "Behavior of critically refracted longitudinal and lamb waves with stress variations in Al 1050 sample", Modares Mechanical Engineering, April 2020
Vol. 20,
Num. 5,
Page 1223-1234,
April 2020,
25
Mehrdad Nazmdar, Mehdi Ahmadi Najafabadi, Mehdi Akhlaghi, "On the improvement of analytical delamination model for drilling of laminated composites using Galerkin method", COMPOSITES PART B-ENGINEERING, April 2020
Vol. 194,
Num. 0,
Page 1-13,
April 2020,
26
Mahdi Habibi, Jalal Yousefi, Mehdi Ahmadi Najafabadi, "Investigation the Effect of Loading Rates on Fracture Toughness of Loading Mode I in Glass / Epoxy Composite Laminates by Acoustic Emission", Modares Mechanical Engineering, December 2019
Vol. 19,
Num. 12,
Page 2917-2925,
December 2019,
27
Fatemeh Faghih Khorasani, Mohammad Zaman Kabir, Mehdi Ahmadi Najafabadi, Khosrow Ghavami, "Predicting compressive stress?strain curves of structural adobe cubes based on Acoustic Emission (AE) hits and Weibull distribution", international Journal of Structural Integrity, November 2019
Vol. 10,
Num. 6,
Page 776-791,
November 2019,
28
Naeim Akbari Shahkhosravi, Jalal Yousefi, Mehdi Ahmadi Najafabadi, Colin Burvill, Giangiacomo Minak, "Fatigue life reduction of GFRP composites due to delamination associated with the introduction of functional discontinuities", COMPOSITES PART B-ENGINEERING, April 2019
Vol. 163,
Num. 0,
Page 536-574,
April 2019,
29
Naeim Akbari Shahkhosravi, Jalal Yousefi, Mehdi Ahmadi Najafabadi, Giangiacomo Minak, Hossein Hosseini Toudeshky, Fariborz Sheibanian, "Static strength and damage evaluation of high speed drilled composite material using acoustic emission and finite element techniques", ENGINEERING FRACTURE MECHANICS, April 2019
Vol. 210,
Num. 0,
Page 470-485,
April 2019,
30
Milad Saeedifar, Mehdi Ahmadi Najafabadi, Dimitrios Zarouchas, Hossein Hosseini Toudeshky, Meisam Jalalvand, "Barely visible impact damage assessment in laminated composites using acoustic emission", COMPOSITES PART B-ENGINEERING, November 2018
Vol. 152,
Num. 0,
Page 180-192,
November 2018,
31
Parinaz Belalpour Dastjerdi, Mehdi Ahmadi Najafabadi, "Characterizing the damage mechanisms in mode II delamination in
glass/epoxy composite using acoustic emission", STRUCTURAL ENGINEERING AND MECHANICS, September 2018
Vol. 67,
Num. 4,
Page 1-9,
September 2018,
32
Ali Gholizadeh, Mehdi Ahmadi Najafabadi, Hamed Saghafi, Reza Mohammadi, "Considering damages to open-holed composite laminates modified bynano-fibers under the three-point bending test", POLYMER TESTING, July 2018
Vol. 70,
Num. 0,
Page 363-377,
July 2018,
33
Mahdi Habibi, Jalal Yousefi, Mehdi Ahmadi Najafabadi, "Damage assessment of mode II of polymer composite material using a new acoustic emission and finite element methods", , July 2018
Vol. 18,
Num. 4,
Page 126-134,
July 2018,
34
Ali Gholizadeh, Mehdi Ahmadi Najafabadi, Hamed Saghafi, Reza Mohammadi, "Considering damage during fracture test on nanomodified laminates using acoustic emission method", EUROPEAN JOURNAL OF MECHANICS A-SOLIDS, June 2018
Vol. 72,
Num. 0,
Page 452-463,
June 2018,
35
Milad Saeedifar, Mehdi Ahmadi Najafabadi, Dimitrios Zarouchas, Hossein Hosseini Toudeshky, Meisam Jalalvand, "Clustering of Interlaminar and Intralaminar damages in Laminated Composites under Indentation Loading using Acoustic Emission", COMPOSITES PART B-ENGINEERING, January 2018
Vol. 144,
Num. 0,
Page 206-219,
January 2018,
36
Seyedali Sadeghi, Navid Zarif Karimi, Mohammad Fotouhi, , Mehdi Ahmadi Najafabadi, Ana Pavlovic, "Residual Stress Evaluation in Friction Stir Welding of Aluminum Plates by Means of Acoustic Emission and Ultrasonic Waves", FME Transactions, January 2018
Vol. 46,
Num. 0,
Page 230-237,
January 2018,
37
Anvar Soukhani Darisofla, Milad Saeedifar, Mehdi Ahmadi Najafabadi, Mohamad Fotouhi, Dimitrios Zarouchas, "The study of buckling and post-buckling behavior of laminated composites consisting multiple delaminations using acoustic emission", THIN-WALLED STRUCTURES, January 2018
Vol. 128,
Num. 0,
Page 145-156,
January 2018,
38
Milad Saeedifar, Mehdi Ahmadi Najafabadi, Kaivan Mohammadi, Mohamad Fotouhi, Hossein Hosseini Toudeshky, Reza Mohammadi, "Acoustic Emission-Based Methodology to Evaluate Delamination Crack Growth Under Quasi-static and Fatigue Loading Conditions", JOURNAL OF NONDESTRUCTIVE EVALUATION, January 2018
Vol. 37,
Num. 1,
Page 1-13,
January 2018,
39
Abdollah Maleki, Milad Saeedifar, Mehdi Ahmadi Najafabadi, Dimitrios Zarouchas, "The Fatigue Failure Study of Repaired Aluminum Plates by Composite Patches using Acoustic Emission", ENGINEERING FRACTURE MECHANICS, December 2017
Vol. 0,
Num. 0,
Page 1-12,
December 2017,
40
Mehdi Ahmadi Najafabadi, Manouchehr Salehi, Mohammad Reza Morovvati, , Seyed Ali Ebrahimian, Cevat Teymuri Sindi, "Investigation of deep drawing process by the means of acoustic emission characteristics", MATERIALS EVALUATION, November 2017
Vol. 17,
Num. 11,
Page 1525-1531,
November 2017,
41
Ali Gholizadeh, Naeim Akbari Shahkhosravi, Reza Mohammadi, Mehdi Ahmadi Najafabadi, Hossein Heidary, "The effect of carbon nanotubes on the life of drilled glass / epoxy composite under fatigue loading", , October 2017
Vol. 17,
Num. 8,
Page 399-405,
October 2017,
42
Mir Mohammad Mousavi Nasab, Hamid Fotouhi, Reza Mohammadi, Mehdi Ahmadi Najafabadi, Hossein Hosseini Toudeshky, "Investigation of failure mechanisms of notched aluminum plates repaired with composite patches using acoustic emission method", , October 2017
Vol. 17,
Num. 8,
Page 406-412,
October 2017,
43
Jalal Yousefi, Mehdi Ahmadi Najafabadi, Hossein Hosseini Toudeshky, Mehdi Akhlaghi, "Damage evaluation of laminated composite material using a new acoustic emission Lamb-based and finite element techniques", APPLIED COMPOSITE MATERIALS, October 2017
Vol. 0,
Num. 0,
Page 1-20,
October 2017,
44
Mohammad Ghayoomi Mohammadi, Seyed Ali Mahdian Ahi, Jalal Yousefi, Mehdi Ahmadi Najafabadi, "AE- based damage investigation in unidirectional composite laminates under low-velocity impact tests", , September 2017
Vol. 17,
Num. 7,
Page 91-100,
September 2017,
45
Reza Mohammadi, Milad Saeedifar, Mehdi Ahmadi Najafabadi, Hossein Hosseini Toudeshky, "Acoustic Emission Based Methodology to Evaluate the Fracture Toughness in Carbon/Epoxy Composites", , September 2017
Vol. 49,
Num. 2,
Page 379-386,
September 2017,
46
Saeed Kazemi Najafi, Houri Sharifinia, Mehdi Ahmadi Najafabadi, Eric Landis, "Acoustic emission characterization of failure mechanisms in oriented strand board using wavelet based and unsupervised clustering methods", WOOD SCIENCE AND TECHNOLOGY, August 2017
Vol. 0,
Num. 0,
Page 1-13,
August 2017,
47
Milad Saeedifar, Mehdi Ahmadi Najafabadi, Jalal Yousefi, Reza Mohammadi, Hossein Hosseini Toudeshky, Giangiacomo Minak, "Delamination Analysis in Composite Laminates by means of Acoustic Emission and Bi-linear/Tri-linear Cohesive Zone Modeling", COMPOSITE STRUCTURES, December 2016
Vol. 161,
Num. 0,
Page 505-512,
December 2016,
48
Milad Saeedifar, Mehdi Ahmadi Najafabadi, Hossein Hosseini Toudeshky, Reza Mohammadi, "Investigation of delaminiation initiation and propagation in glass/epoxy composites with acoustic emission technique", , December 2016
Vol. 48,
Num. 8,
Page 411-422,
December 2016,
49
Seyed Ali Mahdian Ahi, Jalal Yousefi, Mehdi Ahmadi Najafabadi, Amir Esmaeilzare, "Residual stress evaluation in friction stir-welded aluminum plates using finite element method and acoustic emission", JOURNAL OF MATERIALS SCIENCE, October 2016
Vol. 0,
Num. 0,
Page 1-14,
October 2016,
50
Reza Mohammadi, Mehdi Ahmadi Najafabadi, Milad Saeedifar, Jalal Yousefi, Giangiacomo Minak, "Correlation of acoustic emission with finite element predicted damages in open-hole tensile laminated composites", COMPOSITES PART B-ENGINEERING, September 2016
Vol. 108,
Num. 0,
Page 427-435,
September 2016,
51
Naeim Akbari Shahkhosravi, Ali Gholizadeh, Reza Mohammadi, Milad Saeedifar, Mehdi Ahmadi Najafabadi, "Quantification of damage mechanisms in holed composite laminates by acoustic emission and finite element methods", , August 2016
Vol. 16,
Num. 6,
Page 345-352,
August 2016,
52
Sadegh Hosseini, Mehdi Ahmadi Najafabadi, Mehdi Akhlaghi, "Using acoustic emission method for lubrication monitoring in a journal bearing in the time- frequency domain", , August 2016
Vol. 16,
Num. 6,
Page 171-180,
August 2016,
53
Hoori Sharifinia, Saeid Kazemi Najafi, Mehdi Ahmadi Najafabadi, "Evaluation of fracture behavior of scobs under tensile load using acoustic emission technique", , August 2016
Vol. 69,
Num. 2,
Page 339-349,
August 2016,
54
Seyed Ali Mahdian Ahi, Jalal Yousefi, Mehrdad Nazmdar, Vavid Zarif Karimi, Mehdi Ahmadi Najafabadi, Giangiacomo Minak, "Damage evaluation of laminated composites under low-velocity impact tests using acoustic emission method", JOURNAL OF COMPOSITE MATERIALS, May 2016
Vol. 0,
Num. 0,
Page 1-12,
May 2016,
55
Mohamad Fotouhi, Hamed Saghafi, Tommaso Brugo , Giangiacomo Minak, Cristiano Fragassa, Andrea Zucchelli, Mehdi Ahmadi Najafabadi, "Effect of PVDF nanofibers on the fracture behavior of composite laminates for high-speed woodworking machines", PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE, April 2016
Vol. 0,
Num. 0,
Page 1-13,
April 2016,
56
Milad Saeedifar, Mohamad Fotouhi, Mehdi Ahmadi Najafabadi, Hossein Hosseini Toudeshky, Giangiacomo Minak, "Prediction of quasi-static delamination onset and growth in laminated composites by
Acoustic Emission", COMPOSITES PART B-ENGINEERING, February 2016
Vol. 85,
Num. 0,
Page 113-122,
February 2016,
57
Milad Saeedifar, Mohamad Fotouhi, Mehdi Ahmadi Najafabadi, "Investigation of push-out delamination using cohesive zone modelling and acoustic emission technique", JOURNAL OF COMPOSITE MATERIALS, December 2015
Vol. 0,
Num. 0,
Page 1-12,
December 2015,
58
Sadegh Hosseini, Mehdi Ahmadi Najafabadi, Mehdi Akhlaghi, "Classification of acoustic emission signals generated from journal bearing at different lubrication conditions based on wavelet analysis in combination with artificial neural network and genetic algorithm", TRIBOLOGY INTERNATIONAL, December 2015
Vol. 95,
Num. 0,
Page 426-434,
December 2015,
59
Jalal Yousefi, Reza Mohammadi, Milad Saeedifar, Mehdi Ahmadi Najafabadi, Hossein Hosseini Toudeshky, "Delamination characterization in composite laminates using acoustic emission features, micro visualization and finite element modeling", JOURNAL OF COMPOSITE MATERIALS, November 2015
Vol. 0,
Num. 0,
Page 1-13,
November 2015,
60
Mir Mohammad Mousavi Nasab, Milad Saeedifar, Mehdi Ahmadi Najafabadi, Hossein Hosseini Toudeshky, "Investigation of delamination in laminated composites under quasi-static
and fatigue loading conditions by acoustic emission", , October 2015
Vol. 15,
Num. 8,
Page 85-92,
October 2015,
61
Mohamad Fotouhi, Seyedali Sadeghi, Meisam Jalalvand, Mehdi Ahmadi Najafabadi, "Analysis of the damage mechanisms in mixedmode delamination of laminated composites using acoustic emission data clustering", JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS, September 2015
Vol. 0,
Num. 0,
Page 1-23,
September 2015,
62
Mehrdad Nazmdar, Jalal Yousefi, Mohamad Fotouhi, Mehdi Ahmadi Najafabadi, "Damage evaluation of composite materials using acoustic emission features and Hilbert transform", JOURNAL OF COMPOSITE MATERIALS, September 2015
Vol. 0,
Num. 0,
Page 1-11,
September 2015,
63
Reza Mohammadi, Milad Saeedifar, Hossein Hosseini Toudeshky, Mehdi Ahmadi Najafabadi, Mohamad Fotouhi, "Prediction of delamination growth in carbon/epoxy composites using a novel acoustic emission-based approach", JOURNAL OF REINFORCED PLASTICS AND COMPOSITES, April 2015
Vol. 0,
Num. 0,
Page 1-11,
April 2015,
64
Mohamad Fotouhi, Milad Saeedifar, Seyedali Sadeghi, Mehdi Ahmadi Najafabadi, Giangiacomo Minak, "Investigation of the damage mechanisms for mode I delamination growth in foam core sandwich composites using acoustic emission", STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL, January 2015
Vol. 0,
Num. 0,
Page 1-16,
January 2015,
65
Milad Saeedifar, Mohamad Fotouhi, Mehdi Ahmadi Najafabadi, Hossein Hosseini Toudeshky, "Prediction of delamination growth in laminated composites using acoustic emission and cohesive zone modeling techniques", COMPOSITE STRUCTURES, January 2015
Vol. 124,
Num. 0,
Page 120-127,
January 2015,
66
Milad Saeedifar, Mohamad Fotouhi, Mehdi Ahmadi Najafabadi, Hossein Hosseini Toudeshky, "Interlaminar Fracture Toughness Evaluation in Glass/Epoxy Composites Using Acoustic Emission and Finite Element Methods", JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, November 2014
Vol. 0,
Num. 0,
Page 1-12,
November 2014,
67
Reza Mohammadi, Milad Saeedifar, Mohamad Fotouhi, Cevat Teymuri Sindi, Mehdi Ahmadi Najafabadi, "Determination of fracture toughness of heat treated AISI D2 steel usingFinite Element and Acoustic Emission methods", , October 2014
Vol. 14,
Num. 11,
Page 1-8,
October 2014,
68
Mohamad Fotouhi, Mehdi Ahmadi Najafabadi, "Investigation of the mixed-mode delamination in polymer-matrix composites using acoustic emission technique", JOURNAL OF REINFORCED PLASTICS AND COMPOSITES, September 2014
Vol. 33,
Num. 19,
Page 1767-1782,
September 2014,
69
Milad Saeedifar, Mohamad Fotouhi, Reza Mohammadi, Mehdi Ahmadi Najafabadi, Milad Hajikhani, "Classification of damage mechanisms during delamination growth in
sandwich composites byacoustic emission", , August 2014
Vol. 14,
Num. 6,
Page 144-152,
August 2014,
70
Parinaz Belalpour Dastjerdi, Mohamad Fotouhi, Sakine Fotohi, Mehdi Ahmadi Najafabadi, "Acoustic emission based study to investigate the initiation and growth of delamination in composite materials", , May 2014
Vol. 14,
Num. 3,
Page 78-84,
May 2014,
71
Milad Saeedifar, Mohamad Fotouhi, Reza Mohammadi, Mehdi Ahmadi Najafabadi, Hossein Hosseini Toudeshky, "Investigation of delamination and interlaminar fracture toughness assessment of glass/epoxy composite by acoustic emission", , May 2014
Vol. 14,
Num. 4,
Page 1-11,
May 2014,
72
Farzad Pashmforoush, Ramin Khamedi, Mohamad Fotouhi, Milad Hajikhani, Mehdi Ahmadi Najafabadi, "Damage Classification of Sandwich Composites Using Acoustic
Emission Technique and k-means Genetic Algorithm", JOURNAL OF NONDESTRUCTIVE EVALUATION, April 2014
Vol. 33,
Num. 0,
Page 481-492,
April 2014,
73
Mohamad Fotouhi, Parinaz Belalpour Dastjerdi, Mehdi Ahmadi Najafabadi, "Acoustic Emission Based Method to Characterize Glass/Epoxy Composite Damages During 3-point Bending Test", International Journal of Material Science(IJMSCI), March 2014
Vol. 4,
Num. 1,
Page 22-30,
March 2014,
74
Yashar Javadi, Mehdi Akhlaghi, Mehdi Ahmadi Najafabadi, "Nondestructive Evaluation of Welding Residual Stresses in Austenitic Stainless Steel Plates", RESEARCH IN NONDESTRUCTIVE EVALUATION, March 2014
Vol. 0,
Num. 25,
Page 30-43,
March 2014,
75
Mohsen Khedmat, Mehdi Ahmadi Najafabadi, Hamid Rahimy Bafghy, "Acousto elastic constant measurement in the HAZ of aluminum connection with the approach of using differnt frquencies", Indian Journal of Scientific Research, March 2014
Vol. 1,
Num. 2,
Page 329-334,
March 2014,
76
Navid Zarif Karimi, Hosein Heidary, Mehdi Ahmadi Najafabadi, Abdolreza Rahimi, Mehdi Farajpur, "Monitorng of residual tensile strength in drilled composite laminates by acoustic emission", , March 2014
Vol. 13,
Num. 15,
Page 169-183,
March 2014,
77
Jalal Yousefi, Mehdi Ahmadi Najafabadi, Mehrdad Nazmdar, Amir Refahi, Farshid Jalali Moghadas, "Damage Categorization of Glass/Epoxy Composite Material Under Mode II Delamination Using Acoustic Emission Data: A Clustering Approach to Elucidate Wavelet Transformation Analysis", ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING, March 2014
Vol. 39,
Num. 2,
Page 1325-1335,
March 2014,
78
Cevat Teymuri Sindi, Mehdi Ahmadi Najafabadi, Manouchehr Salehi, "Wavelet-based acoustic emission characterization of surface damages during experimental simulation of sheet metal forming process", PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY, February 2014
Vol. 228,
Num. 3,
Page 253-265,
February 2014,
79
Hossein Heidary, Navid Zarif Karimi, Mehdi Ahmadi Najafabadi, Abdolreza Rahimi, Andera Zucchelli, "Clustering of Acoustic Emission Signals Collected during Drilling Process of Composite Materials Using Unsupervised
Classifiers", JOURNAL OF COMPOSITE MATERIALS, January 2014
Vol. 0,
Num. 0,
Page 1-13,
January 2014,
80
Yashar Javadi, Seyedali Sadeghi, Mehdi Ahmadi Najafabadi, "Taguchi optimization and ultrasonic measurement of residual stresses in the friction stir welding", MATERIALS & DESIGN, January 2014
Vol. 55,
Num. 0,
Page 27-34,
January 2014,
81
Mohamad Fotouhi, Mehdi Ahmadi Najafabadi, "Acoustic emission-based study to characterize the initiation of delamination in composite materials", JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS, January 2014
Vol. 0,
Num. 0,
Page 1-19,
January 2014,
82
Cevat Teymuri Sindi, Mehdi Ahmadi Najafabadi, Manouchehr Salehi, "Tribological Behavior of Sheet Metal Forming Process Using Acoustic Emission Characteristics", TRIBOLOGY LETTERS, August 2013
Vol. 51,
Num. 2,
Page 1-15,
August 2013,
83
Seyedali Sadeghi, Mehdi Ahmadi Najafabadi, Yashar Javadi, Mohammad Javad Mohammadi Sefat, "Using ultrasonic waves and finite element method to evaluate through-thickness residual stresses distribution in the friction stir welding of aluminum plates", MATERIALS & DESIGN, July 2013
Vol. 52,
Num. 0,
Page 870-880,
July 2013,
84
Yashar Javadi, Mehdi Ahmadi Najafabadi, Mehdi Akhlaghi, "Comparison between Contact and Immersion Method in Ultrasonic Stress Measurement of Welded Stainless Steel Plates", JOURNAL OF TESTING AND EVALUATION, April 2013
Vol. 41,
Num. 5,
Page 788-797,
April 2013,
85
Mohamad Fotouhi, Cevat Teymuri Sindi, Mehdi Ahmadi Najafabadi,, "Fracture Characteristics of AISI D2 Tool Steel at Different Tempering Temperatures Using Acoustic Emission and Fuzzy C-Means Clustering", ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING, March 2013
Vol. 0,
Num. 0,
Page 0-0,
March 2013,
86
Cevat Teymuri Sindi, Mehdi Ahmadi Najafabadi, Manouchehr Salehi, "Investigation of surface damages during sheet metal forming using acoustic emission", PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY, March 2013
Vol. 227,
Num. 3,
Page 286-296,
March 2013,
87
Yashar Javadi, Hamed Salimi Pir Zman, Mohammadreza Hadizadeh Raeisi, Mehdi Ahmadi Najafabadi, "Ultrasonic inspection of a welded stainless steel pipe to evaluate residual
stresses through thickness", MATERIALS & DESIGN, February 2013
Vol. 49,
Num. 0,
Page 591-601,
February 2013,
88
Yashar Javadi, Vagelis Plevris, Mehdi Ahmadi Najafabadi, "Using LCR Ultrasonic Method to Evaluate Residual Stress
in Dissimilar Welded Pipes", International Journal of Innovation,Management and Technology, February 2013
Vol. 4,
Num. 1,
Page 170-174,
February 2013,
89
Yashar Javadi, Omid Afzali Naniz, Mohammadreza Hadizadeh Raeisi, Mehdi Ahmadi Najafabadi, "Nondestructive Evaluation ofWelding Residual Stresses
in Dissimilar Welded Pipes", JOURNAL OF NONDESTRUCTIVE EVALUATION, January 2013
Vol. 0,
Num. 0,
Page 0-0,
January 2013,
90
Yashar Javadi, Mehdi Ahmadi Najafabadi, "Comparison between Contact and Immersion Ultrasonic Method to Evaluate Welding Residual Stresses of Dissimilar Joints", MATERIALS & DESIGN, January 2013
Vol. 47,
Num. 0,
Page 473-482,
January 2013,
91
Yashar Javadi, Mehdi Akhlaghi, Mehdi Ahmadi Najafabadi, "Using Finite Element and Ultrasonic Method to Evaluate Welding Longitudinal Residual Stress through the Thickness in Austenitic Stainless Steel Plates", MATERIALS & DESIGN, January 2013
Vol. 45,
Num. 0,
Page 628-642,
January 2013,
92
Mohamad Fotouhi, Hossein Heidary Kalahroodi, , Mehdi Ahmadi Najafabadi, "Composite materials damage characterization under qusi-static 3-points bending test using fuzzy c-means clustering", Applied Mechanics and Materials, December 2012
Vol. 110-116,
Num. 0,
Page 1221-1228,
December 2012,
93
Yashar Javadi, Mehdi Ahmadi Najafabadi, Mehdi Akhlaghi, "Residual Stress Evaluation in Dissimilar Welded Joints Using Finite Element Simulation and the LCR Ultrasonic Wave", RUSSIAN JOURNAL OF NONDESTRUCTIVE TESTING, November 2012
Vol. 48,
Num. 9,
Page 541-552,
November 2012,
94
Navid Zarif Karimi, Hossein Heidary Kalahroodi, Giangiacomo Minak, Mehdi Ahmadi Najafabadi, "Effect of the drilling process on the compression behavior of glass/epoxy laminates", COMPOSITE STRUCTURES, November 2012
Vol. 0,
Num. 0,
Page 0-0,
November 2012,
95
Hossein Heidary Kalahroodi, Mehdi Ahmadi Najafabadi, Abdolreza Rahimi, Giangiacomo Minak, "Wavelet-based Acoustic Emission Characterization of Residual Strength of Drilled Composite Materials", JOURNAL OF COMPOSITE MATERIALS, October 2012
Vol. 0,
Num. 0,
Page 0-0,
October 2012,
96
Cevat Teymuri Sindi, Mehdi Ahmadi Najafabadi, Manouchehr Salehi, "Investigation of surface damages during sheet metal forming using acoustic emission", PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY, September 2012
Vol. 0,
Num. 0,
Page 1-11,
September 2012,
97
, , Mehdi Ahmadi Najafabadi, "Acoustic emission-based damage classification of glass/polyester composites using harmony search k-means algorithm", JOURNAL OF REINFORCED PLASTICS AND COMPOSITES, May 2012
Vol. 31,
Num. 10,
Page 671-680,
May 2012,
98
Navid Zarif Karimi, Hossein Heidary Kalahroodi, Mehdi Ahmadi Najafabadi, "Residual tensile strength monitoring of drilled composite materials by acoustic emission", MATERIALS & DESIGN, April 2012
Vol. 40,
Num. 0,
Page 229-236,
April 2012,
99
Amir Refahi Oskouei, Hossein Heidary Kalahroodi, Mehdi Ahmadi Najafabadi, Mehdi Farajpur, "Unsupervised acoustic emission data clustering for the analysis of damage mechanisms in glass/polyester composites", MATERIALS & DESIGN, January 2012
Vol. 37,
Num. 0,
Page 416-422,
January 2012,
100
Sajad Mostafavi, Mohamad Fotouhi, , Mehdi Ahmadi Najafabadi, Cevat Teymuri Sindi, "Acoustic Emission Methodology to Evaluate the Fracture
Toughness in Heat Treated AISI D2 Tool Steel", JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, January 2012
Vol. 0,
Num. 0,
Page 0-0,
January 2012,
101
Behnaz Tajik, Abbas Abbassi, Majid Saffar-Avval, Mehdi Ahmadi Najafabadi, "Ultrasonic properties of suspensions of TiO2 and Al2O3 nanoparticles in water", POWDER TECHNOLOGY, January 2012
Vol. 217,
Num. 0,
Page 171-176,
January 2012,
102
Jahan Taghizadeh, Mehdi Ahmadi Najafabadi, "Identification of damage modes in polypropylene/epoxy composites by using principal component analysis on AE signals extracted from Mode I delamination", NONDESTRUCTIVE TESTING AND EVALUATION, January 2012
Vol. 0,
Num. 0,
Page 1-20,
January 2012,
103
Mohamad Fotouhi, Hossein Heidary Kalahroodi, Farzad Pashmforoush, Mehdi Ahmadi Najafabadi, "Composite Materials Damage Characterization under Quasi-static 3-Point Bending Test Using Fuzzy C-Means Clustering", Applied Mechanics and Materials, January 2012
Vol. 110-116,
Num. 0,
Page 1221-1228,
January 2012,
104
Zamn Saeidinia, Mehdi Ahmadi Najafabadi, Dariush Jawabvar, "The Study of Residual Stress in Welded Specimens of Aluminium Alloy by Using Acoustic Emission Method", Applied Mechanics and Materials, January 2012
Vol. 110-116,
Num. 0,
Page 3617-3623,
January 2012,
105
Jahan Taghizadeh, Mehdi Ahmadi Najafabadi, "Classification of acoustic emission signals collected during mode I delamination on glass/polyester composites by integration on the principal component analysis and fuzzy clustering means", , December 2011
Vol. 22,
Num. 2,
Page 1-16,
December 2011,
106
, , Mehdi Ahmadi Najafabadi, Amir Refahi Oskouei, "Monitoring the initiation and growth of delamination in composite materials using acoustic emission under quasi-static three-point bending test", JOURNAL OF REINFORCED PLASTICS AND COMPOSITES, October 2011
Vol. 30,
Num. 17,
Page 1481-1493,
October 2011,
107
Ali Bateni, Nader Parvin, Mehdi Ahmadi Najafabadi, "Density evaluation of powder metallurgy compacts using in situ X-ray radiography", POWDER METALLURGY, September 2011
Vol. 54,
Num. 3,
Page 1-4,
September 2011,
108
, Hossein Heidary Kalahroodi, Mehdi Ahmadi Najafabadi,, "Characterization of composite materials damage under qusi-static 3-point bending test using wavelet and fuzzy C-means clustering", JOURNAL OF COMPOSITE MATERIALS, September 2011
Vol. 0,
Num. 0,
Page 1-14,
September 2011,
109
, , Mehdi Ahmadi Najafabadi, "Damage Characterization of Glass/Epoxy Composite Under Three-Point Bending Test Using Acoustic Emission Technique", JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, August 2011
Vol. 0,
Num. 0,
Page 1-11,
August 2011,
110
Jahan Taghizadeh, Mehdi Ahmadi Najafabadi, "Classification of Acoustic Emission Signals Collected During Tensile Tests on Unidirectional Ultra High Molecular Weight Polypropylene Fiber Reinforced Epoxy Composites Using Principal Component Analysis", RUSSIAN JOURNAL OF NONDESTRUCTIVE TESTING, July 2011
Vol. 47,
Num. 7,
Page 491-500,
July 2011,
111
Milad Hajikhani, Mehdi Ahmadi Najafabadi, Mehdi Farjpour, Amir Refahi Oskuei, Amir Sharifi, "Strain energy release rate assessment in mode I delamination of foam core sandwich composites by acoustic emission", JOURNAL OF COMPOSITE MATERIALS, May 2011
Vol. 0,
Num. 0,
Page 1-7,
May 2011,
112
Ali Moarefzadeh, Mehdi Ahmadi Najafabadi, "Finite Element Simulation of Plasma Arc Welding Process for Ferrite Stainless Steel", Majlesi Journal of Mechanical Engineering, May 2011
Vol. 4,
Num. 3,
Page 67-74,
May 2011,
113
Amir Ahmad Bakhtiary Davijani, Milad Hajikhani, Mehdi Ahmadi Najafabadi, "Acoustic Emission Based on Sentry Function to Monitor the Initiation of Delamination in Composite Materials", MATERIALS & DESIGN, April 2011
Vol. 32,
Num. 5,
Page 3059-3065,
April 2011,
114
Cevat Teymuri Sindi, Mehdi Ahmadi Najafabadi, Seyed Ali Ebrahimian, "Fracture Toughness Determination of Heat Treated AISI D2 Tool Steel Using AE Technique", ISIJ INTERNATIONAL, March 2011
Vol. 51,
Num. 2,
Page 305-312,
March 2011,
115
Amir Refahi Oskouei, Anderea Zucchelli, Mehdi Ahmadi Najafabadi, Giangiacomo Minak, "An integrated approach based on acoustic emission and mechanical information to evaluate the delamination fracture toughness at mode I in composite laminate", MATERIALS & DESIGN, January 2011
Vol. 32,
Num. 3,
Page 1444-1455,
January 2011,
116
Amir Refahi Oskouei, Milad Hajikhani, Mehdi Ahmadi Najafabadi, Amir Sharifi, Mohammad Heidari, "Damage Progression and Residual Strength Evaluation in Sandwich Panels Loaded at the Center", Key Engineering Materials, January 2011
Vol. 465,
Num. 0,
Page 527-530,
January 2011,
117
Milad Hajikhani, Amir Refahi Oskouei, Mehdi Ahmadi Najafabadi, Amir Sharifi, Mohammad Heidari, "Progressive Fracture Evaluation in Composite Materials by Acoustic Emission Technique", Key Engineering Materials, January 2011
Vol. 465,
Num. 0,
Page 535-538,
January 2011,
118
Amir Refahi Oskouei, Ramin Khamedi, Mehdi Ahmadi Najafabadi, Milad Hajikhani, "Characterization of Mode I Delamination in Comomposite Materials by Acoustic Emission", Journal of Pure and Applied Ultrasonics, April 2010
Vol. 32,
Num. 1,
Page 3-7,
April 2010,
119
Amir Refahi Oskouei, Mehdi Ahmadi Najafabadi, "Acoustic Emission Characteristics of Mode I Delamination in Glass/Polyester Composites", Journal of composite materials, April 2010
Vol. 44,
Num. 0,
Page 0-0,
April 2010,
120
Amir Refahi Oskouei, Mehdi Ahmadi Najafabadi, "Fracture Strength Distribution in E-Glass Fiber Using Acoustic Emission", Journal of Composite Materials, March 2010
Vol. 44,
Num. 6,
Page 0-0,
March 2010,
121
Ali Jalili Nikroo, Mehdi Akhlaghi, Mehdi Ahmadi Najafabadi, "Simulation and analysis of flow in the injection chamber of die casting machine during the slow shot phase", The International Journal of Advanced Manufacturing Technology, March 2009
Vol. 42,
Num. 2,
Page 0-0,
March 2009,
122
Mojtaba Ayatollahy, Shahriar Fariborz, Mehdi Ahmadi Najafabadi, "Anti-plane elastodynamic analysis of planes with multiple defects", Applied Mathematical Modelling, February 2009
Vol. 33,
Num. 2,
Page 0-0,
February 2009,
123
Reza Hasanzadeh Pak Rezaei, Ali M. Reza, S.H.H. Sadeghi, Amir Hossein Rezaei, Mehdi Ahmadi Najafabadi, "Optimal signal-adaptive maximum likelihood filter for enhancement of defects in eddy current C-scan images", NDT & E INTERNATIONAL, July 2008
Vol. 41,
Num. 5,
Page 371-381,
July 2008,
124
Reza Hasanzadeh Pak Rezaei, S.H.H. Sadeghi, Amir Hossein Rezaei, Alireza Moghaddamjoo, Mehdi Ahmadi Najafabadi, "Noise Suppression in Eddy Current C-Scan Images Using a Non-linear Adaptive Maximum Likelihood Filter", Amirkabir International Journal of Electrical and Electronics Engineering, June 2008
Vol. 19,
Num. 68,
Page 55-62,
June 2008,
125
Reza Hasanzadeh Pak Rezaei, Amir Hossein Rezaei, S.H.H. Sadeghi, Mohammad Hassan Moradi, Mehdi Ahmadi Najafabadi, "A density -based fuzzy clustering technique for non-destructive detection of defect in materials", NDT and E International, June 2007
Vol. 40,
Num. 4,
Page 0-0,
June 2007,
126
Mehdi Ahmadi Najafabadi, "Decarburization of lron Melt by an Immersed Al2O3-Fe2O3 PorousTube", ISIJ Internationa, January 1998
Vol. 37,
Num. 1,
Page 0-0,
January 1998,
127
Mehdi Ahmadi Najafabadi, "Deoxidation of lron Melt with Immersed MgO-C Porous Tube", ISIJ International, November 1996
Vol. 36,
Num. 11,
Page 0-0,
November 1996,
128
Mehdi Ahmadi Najafabadi, "Simultaneous Decarburization and Denitrogenization of Molten lron with Vacuum Suction Degassing Method", ISIJ International, October 1996
Vol. 36,
Num. 10,
Page 0-0,
October 1996,
Conference Papers
Portal Records
1
Javad Sharifi Ghaderi, Mehdi Ahmadi Najafabadi, "Determining the characteristics of acoustic emission in the fatigue crack growth of aluminum alloy 2025 for online structural monitoring ", 19th International Conference of Iranian Aerospace Society, AERO2021, May 2021
2
Arash Khodaei, Sajad Alimirzaeifaradonbeh, Zahra Nozarijouybari, Mehdi Ahmadi Najafabadi, "Study of bending strength of glass/epoxy composite specimens produced by filament winding technique ", 28th Annual international conference of Iranian society of mechanical engineering, ISME 2020, May 2020
3
Arash Khodaei, Sajad Alimirzaeifaradonbeh, Zahra Nozarijouybari, Mehdi Ahmadi Najafabadi, "Investigation of Bending Strength of Composite pipe specimens Made by Wire Winding Process ", 28th Annual International Conference of Iranian Society of Mechanical Engineering, ISME 2020, May 2020
4
Nazanin Morakabi Esfahani, Mehdi Ahmadi Najafabadi, "Second and higher order acoustoelastic constants measurement of bolts by applying tensile load and using ultrasonic testing method ", The 4th international and 15th national conference on manufacturing engineeing, October 2018
5
Nazanin Morakabi Esfahani, Mehdi Ahmadi Najafabadi, Dr. Farid Reza Biglari, "Finite element modelling of stress analysis in hot rolling process ", 3rd international conference on mechanical and aerospace engineering, May 2018
6
Nazanin Morakabi Esfahani, Mehdi Ahmadi Najafabadi, Dr. Farid Reza Biglari, "Stress analysis in hot rolling process using finite element method ", 3rd International Conference on Mechanical and Aerospace Engineering, May 2018
7
Naeim Akbari Shahkhosravi, Mehdi Ahmadi Najafabadi, Hossein Heydari, "An investigation of carbon nanotubes effect on drilled-induced delamination and fatigue-life of GFRP composites using acoustic emission ", The 26th Annual International Conference of Iranian Society of Mechanical Engineers-ISME2018, April 2018
8
Milad Saeedifar, Reza Mohammadi, Mehdi Ahmadi Najafabadi, Hossein Hosseini Toudeshky, "Crack growth rate prediction in multi layer composites using acoustic emission ", ISME2017- 1864-ISME, May 2017
9
Reza Mohammadi, Milad Saeedifar, Mehdi Ahmadi Najafabadi, Hossein Hosseini Toudeshky, "Damage detection in multi-layer composites using acoustic emission technique ", ISME2017- 1864-ISME, May 2017
10
Reza Mohammadi, Hamid Fotouhi, Milad Saeedifar, Mehdi Ahmadi Najafabadi, "Determination of damage mechanisms in glass/epoxy composites using acoustic emission technique ", 3rd international conference on the latest achievements of science and technology, January 2017
11
Milad Saeedifar, Mohamad Fotouhi, Navid Zarif Karimi, Mehdi Ahmadi Najafabadi, Hossein Hosseini Toudeshky, Giangiacomo Minak, "Prediction of delamination growth in glass/epoxy composites using acoustic emission ", 2nd International Conference on Mechanics of Composites, July 2016
12
Seyed Ali Mahdian Ahi, Jalal Yousefi, Navid Zarif Karimi, Mehdi Ahmadi Najafabadi, Giangiacomo Minak, "Damage extension characterization of low velocity impact composite plate using acoustic emission ", 2ND INTERNATIONAL CONFERENCE ON MECHANICS OF COMPOSITES, PORTO, PORTUGAL, 11-14 JULY 2016, July 2016
13
Jalal Yousefi, Seyed Ali Mahdian Ahi, Navid Zarif Karimi, Mehdi Ahmadi Najafabadi, Giangiakomo Minak, "Damage analysis for low velocity impacted composite laminates using acoustic emission technique ", 15th youth symposium on experimental solid mechanics, June 2016
14
Seyedali Sadeghi, Mohamad Fotouhi, Navid Zarif Karimi, Mehdi Ahmadi Najafabadi, Giangiacomo Minak, "Residual stress evaluation in friction stir welding of aluminum plates by means of acoustic emission and ultrasonic wave ", 15th youth symposium on experimental solid mechanics, June 2016
15
Leila Ghanbary, Mehdi Farajpour, Mehdi Ahmadi Najafabadi, Saughar Jarchi, "Low cost usb-based RF power meter for 50MHz-9GHz frequency band ", The international conference on new research in engineering sciences, March 2016
16
Foad Mavisat, Mehdi Ahmadi Najafabadi, Jahan Taghizadeh, "Evaluation signal leakage of Acoustic Emission from the pipes in the Hydro test using FFT and wavelets ", 6th Iranian pipe & pipeline conference, June 2015
17
Foad Mavisat, Mehdi Ahmadi Najafabadi, Jahan Taghizadeh, "Evaluation signal leakage of Acoustic Emission from the pipes in the Hydro test using Discrete frequency and wavelets ", 6th Iranian pipe & pipeline conference, June 2015
18
Navid Zarif Karimi, Mohamad Fotouhi, Milad Saeedifar, Giangiacomo Minak, Mehdi Ahmadi Najafabadi, "Inter-laminar fracture toughness measurement of the mixed-mode delamination using acoustic emission technique ", 18th international conference on compositesstructures, June 2015
19
Milad Saeedifar, Mehdi Ahmadi Najafabadi, Hossein Hosseini Toudeshky, Reza Mohammadi, "Investigation of delamination in glass/epoxy composites using acoustic emission and visual inspection ", 23rd Annual International Mechanical Engineers conference, May 2015
20
Milad Saeedifar, Reza Mohammadi, Mehdi Ahmadi Najafabadi, Hossein Hosseini Toudeshky, "determination of interlaminar fracture toughness of carbon/epoxy composites using acoustic emission ", 23rd Annual International Mechanical Engineers conference, May 2015
21
Hossein Barekatain, Hamed Sabet, Mehdi Ahmadi Najafabadi, "Developing welding WC coated electrodes for surface hardening treatment (oxyacetylene welding) of low alloy steels used for drilling shafts ", First International conference on welding and nondestructive testing (ICWNDT2014), 14th National conference on welding & Inspection (14th NCWI) & 3rd National conference on NDT (NCNDT), December 2014
22
Jaber Esmaeeli Karati, Mehdi Ahmadi Najafabadi, "Study of delamination in composite materials under mode I loading using acoustic emission method ", ISAV 2014, December 2014
23
Pouya Shojaeishahmirzadi, Seyed Ali Mahdian Ahi, Mehdi Ahmadi Najafabadi, "Determination of acoustoelastic coefficient for A0 mode lamb wave in stainless steel plate 403L using acoustic emission method ", ISAV 2014, December 2014
24
Mohamad Fotouhi, Kia Hosseini, Mohammadreza Miri Shallou, Mehdi Ahmadi Najafabadi, "Study of delamination damage in composites laminates using Acoustic emission technique ", ISAV 2014, December 2014
25
Mohsen Khetmat, Mehdi Ahmadi Najafabadi, Hamid Rahimi Bafghi, "Acoustoelastic ceofficient measurement in the HAZ of aluminum plate weld joint using different ultrasonic wave frequencies ", The first national conference on mechanical engineering of Iran, February 2014
26
Hossein Barekatain, Hamed Sabet, Mehdi Ahmadi Najafabadi, "Developing welding WC coated electrodes for surface hardening treatment (oxyacetylene welding) of low alloy steels used for drilling shafts ", First international conference on welding and nondestructive testing (ICWNDT2014),14th National conference on welding(14th NCWI) & Inspection, 3rd National conference on NDT (3rd NCNDT), February 2014
27
Seyed Ali Mahdian Ahi, Mohamad Fotouhi, Mehdi Ahmadi Najafabadi, "Study of the damage in laminated composite caused by impact using acoustic emission method ", ISAV2013, December 2013
28
Peyman Azari Dehkordi, Mehdi Ahmadi Najafabadi, "Fatigue crack growth detection in steel structures under high pressure by using acoustic emission method ", 5th Iranian Pipe & Pipeline Conference, December 2013
29
Mehdi Ahmadi Najafabadi, "Nondestructive measurement of residual stress caused in pipe girth weld ", 5th Iranian Pipe & Pipeline Conference, December 2013
30
, Mehdi Ahmadi Najafabadi, Iraj Sattari Far, "Residual stress measurement in aluminum plate joint weld by ultrasonic method ", National Symposium on Mechanical Engineering NCME 2013, March 2013
31
Rasool Bashe Ahangar, Mehdi Ahmadi Najafabadi, Abdolreza Rahimi, "Experimental study on the effect of erosive metallic particles on the sliding bearings by acoustic emission technique ", NCME 2013, March 2013
32
Mohamad Fotouhi, Cevat Teymuri Sindi, Mehdi Ahmadi Najafabadi, "Determination of metallic materials toughness using acoustic emission monitoring technique ", Irans third international conference on industrial automation, January 2013
33
Cevat Teymuri Sindi, Seyedali Ebrahimian, Vahid Fartashvand, Mehdi Ahmadi Najafabadi, "Health Monitoring of CNG Tank Type I using Acoustic Emission ", Fifth International CNG Conference; Related Industries and Equipment Exhibition, December 2012
34
Mohamad Fotouhi, Jalal Yousefi, Mehdi Ahmadi Najafabadi, Hamid Fotouhi, "Monitoring the initiation and growth of delamination in composite materials using Acoustic Emission ", The 3rd International Conference on Composites:
Characterization, Fabrication and Application (CCFA-3)
December 18-19, 2012, Tehran, Iran, December 2012
35
Hossein Heidary Kalahroodi, Navid Zarif Karimi, Mehdi Ahmadi Najafabadi, Abdolreza Rahimi, "Monitoring of chisel edge effect in drilling of composite materials by acoustic emission ", ICMEAT2012-1101, October 2012
36
Yashar Javadi, Mohammadreza Hadizadeh Raeisi, Hamed Salimi Pir Zman, Mehdi Ahmadi Najafabadi, "Using welding simulation and ultrasonic method to evaluate residual stress in stainless steel welded plates ", The ASME 2012 11th Biennial Conference On Engineering Systems Design And Analysis
ESDA2012, July 2012
37
Hossein Heidary Kalahroodi, Navid Zarif Karimi, Mehdi Ahmadi Najafabadi, Giangiacomo Minak, Andrea Zucchelli, "Time-Frequency analyzing of acoustic emission signals in drilling of glass/epoxy composites ", The ASME 2012 11th Biennial Conference On Engineering Systems Design And Analysis
ESDA2012, July 2012
38
Navid Zarif Karimi, Hossein Heidary Kalahroodi, Mehdi Ahmadi Najafabadi, Parnian Kianfar, Giangiacomo.Minak, Andrea Zucchelli, "Online Monitoring of Drilling-Induced Delamination of Composite Materials by Acoustic Emission ", The ASME 2012 11th Biennial Conference On Engineering Systems Design And Analysis
ESDA2012, July 2012
39
Mohamad Fotouhi, Parinaz Belalpour Dastjerdi, Sakineh Fotouhi, Mehdi Ahmadi Najafabadi, "Monitoring of initiation and growth of delamination in composite materials using acoustic emission and energy function ", 6th Condition Monitoring and Fault Diagnosis Conference (CMFD2012), February 2012
40
Mohamad Fotouhi, Sakineh Fotouhi, Parinaz Belalpour Dastjerdi, Mehdi Ahmadi Najafabadi, "Damage characterization of laminated composites under quasi-static 3-point bending test using power spectrum analysis ", 6th Condition Monitoring and Fault Diagnosis Conference (CMFD2012), February 2012
41
, , Mehdi Ahmadi Najafabadi, "Interlaminar fracture energy of glass/epoxy composite laminate under modeII delamination using centry function ", 3rd International and 12th National Conference on Manufacturing Engineering (ICME), December 2011
42
, Mohamad Fotouhi, , Mehdi Ahmadi Najafabadi, "Online monitoring of glass/polyester composites during mode I delamination test using acoustic emission method ", 3rd International conference on manufacturing engineering, December 2011
43
Jahan Taghizadeh, Mehdi Ahmadi Najafabadi, "Study of acoustical behavior differences between glass/epoxy and polypropylene/epoxy composites in tensile loading ", 3rd International Conference on Manufacturing Engineering, ICME201, December 2011
44
Mohamad Fotouhi, , Mehdi Ahmadi Najafabadi, "Monitoring of initiation and growth of delamination using acoustic emission and energy function ", ICME 2011, December 2011
45
Mohamad Fotouhi, , , Mehdi Ahmadi Najafabadi, "Detection of damage mechanisms in delamination of composite materials using wavelet analysis ", ICME 2011, December 2011
46
Mehdi Ahmadi Najafabadi, , Cevat Teymuri Sindi, "Investigation of head pressure loss caused by friction and other effective parameters on leak flow by acoustic emission method ", ICME 2011, December 2011
47
, Mohammad Hosein Zeinali, Mohamad Fotouhi, Mehdi Ahmadi Najafabadi, "Study of effect of micro-structure on developing of residual stresses formed during welding of carbon steels ", ICME 2011, December 2011
48
Saeed Jamiolahmadi, , Mehdi Ahmadi Najafabadi,, "Study of acoustic emission signals produced during three points bending test on composite workpieces by wavelet analysis ", 3rd International Conference on Manufacturing Engineering, ICME201, December 2011
49
Saeed Khorasanizadeh, Mehdi Ahmadi Najafabadi, "Effect of double blasting of abrasive particles in shot and grit blasting treatment of steel pipes surface on adhesion of epoxy coating ", 3rd International Conference on Manufacturing Engineering, ICME201, December 2011
50
Khaled Azari, S.Mahmood Ghalehbandi, Younes Alizadeh Vaghasloo, Mehdi Ahmadi Najafabadi, "Effects of post-weld heat-treatment on residual stresses of ferritic stainless steel welded components ", International Congress on Advances in Welding Science and Technology for Construction, Energy and Transportation Systems, October 2011
51
, , Mehdi Ahmadi Najafabadi, "Temper bead technique to avoid the use of post weld heat treatment ", International Congress on Advances in Welding Science and Technology for Construction, Energy and Transportation systems (AWST-2011), October 2011
52
, Mehdi Ahmadi Najafabadi, , Milad Hajikhani, Hamid Omidvar, Amir Sharifi, "Study of damage occurred in multi-laminate of glass/epoxy composite using non-destructive acoustic emission method ", 1st National Congress Aging Aircraft, July 2011
53
, Amir Refahi Oskouei, Milad Hajikhani, Mehdi Ahmadi Najafabadi, , Hamid Omidvar, Amir Sharifi, "progressive damage assessment in sandwich panels under central loading and determination of residual life by non-destructive acoustic emission method ", 1st National Congress Aging Aircraft, July 2011
54
Sadegh Hosseini, Mehdi Ahmadi Najafabadi, Mehdi Akhlaghi, "Study leak in valve of combustion engines by acoustic emission technique ", 14th international conference on advances in materials & processing technologies, July 2011
55
Navid Zarif Karimi, Hossein Heidary Kalahroodi, Mehdi Ahmadi Najafabadi, "Residual strength monitoring of drilled composite materials by acoustic emission signals ", 14th international conference on advances in materials& processing technologies, July 2011
56
Cevat Teymuri Sindi, Mehdi Ahmadi Najafabadi, "Mechanism identification of AE generation in friction processes ", 14th international conference on advances in materials& processing technologies, July 2011
57
Seyed Ali Ebrahimian, Mehdi Ahmadi Najafabadi, Cevat Teymuri Sindi, "Investigation of acoustic emission behavior of AISI 4130 stainless steel welded by different pass sequences ", 14th international conference on advances in materials& processing technologies, July 2011
58
, , Mehdi Ahmadi Najafabadi, "Investigation of acoustic emission signals related to different damage mechanisms in glass/epoxy composite material using mode II delamination ", 14th international conference on advances in materials& processing technologies, July 2011
59
Cevat Teymuri Sindi, Mehdi Ahmadi Najafabadi, Ali Zahedi Dizaj Yekan, "Effect of double austenitization treatment on the properties of AISI D2 cold work tool steel ", 14th international conference on advances in materials& processing technologies, July 2011
60
, , Mehdi Ahmadi Najafabadi, "Clustering of the Acoustic Emission signals Related to Different Damage Mechanisms in Glass/Epoxy Composite Material under Three Points Bending ", 1st National Conference on NDT, May 2011
61
, , , Mehdi Ahmadi Najafabadi, "Analyzing of AE signals produced during 3-points bending test of composite materials using different neural network algorithms ", 19th Annual Conference on Mechanical Engineering (ISME), May 2011
62
Mehdi Ahmadi Najafabadi, "Corrosion wear of internal wall in the oil and gas pipelines ", 3rd Iranian pipe & pipeline conference, May 2011
63
Sadegh Hosseini, , , Mehdi Ahmadi Najafabadi, "Leak detection methods in transmission pipelines with NDT acoustic emission ", 3rd Iranian pipe & pipeline conference, May 2011
64
Saeed Khorasanizadeh, Mehdi Ahmadi Najafabadi, "The effect of abrasive particle size in shot & grit blasting process on steel pipes epoxy coating adhesion ", 3rd Iranian pipe & pipeline conference, May 2011
65
Zaman Saeidi Nia , Mehdi Ahmadi Najafabadi, ِDariyush Jawabvar, "The Study of Residual Stress in Welded Specimens of Aluminium Alloy by Using
Acoustic Emission Method ", 2011 International Conference on Mechanical and Aerospace Engineering (CMAE 2011), March 2011
66
Hamid Reza Mardani, , Mehdi Ahmadi Najafabadi, "Investigation of damage mechanisms in aluminum blade of the gas turbine air compressor ", 1st National seminar on surface engineering and heat treatment, March 2011
67
, , Hossein Heidary Kalahroodi, Mehdi Ahmadi Najafabadi, "Composite materials damage characterization under quasi-static 3-point bending
test using Fuzzy C-Means Clustering ", 2nd International Conference on Mechanical, Industrial, and Manufacturing Technologies
MIMT 2011, February 2011
68
Hamid Reza Mardani, , Mehdi Ahmadi Najafabadi, "Investigation of damage mechanisms in aluminum blade of the gas turbine air compressor ", National conference on Introducing New Technologies in Mechanical Engineering, February 2011
69
Zaman Saeidinia, Mehdi Ahmadi Najafabadi, Dariush Javabvar, Amir Hooshmanpur, "Study on Residual Stress in Al Weld using Acoustic Emission ", National conference on Introducing New Technologies in Mechanical Engineering, February 2011
70
, Hossein Heidary Kalahroodi, Mehdi Ahmadi Najafabadi,, "monitoring of delamination in drilling operation by acoustic emission ", irans second international conference on industrial automation, February 2011
71
, , Milad Hajikhani, Mehdi Ahmadi Najafabadi, "The Study of Mode II Delamination on Glass/Epoxy Composite
Materials by Acoustic Emission ", The 2nd International Conference on Composites:
Characterization, Fabrication and Application (CCFA-2), December 2010
72
, Hossein Heidary Kalahroodi, Mehdi Ahmadi Najafabadi,, "Wavelet-based Acoustic Emission monitoring of composite materials damage under
quasi-static 3-point bending test ", The 2nd International Conference on Composites:
Characterization, Fabrication and Application (CCFA-2), December 2010
73
Milad Hajikhani, Mehdi Ahmadi Najafabadi, Amir Refahi Oskouei, "ACOUSTIC EMISSION ASSESSMENT OF FRP COMPOSITES DELAMINATION ", ASME 2010 10th Biennial conference on Engineering System Design and Analysis, July 2010
74
Hossein Heidari Kalhroodi, Amir Refahi Oskouei, Milad Hajikhani, Mehdi Ahmadi Najafabadi, "Acoustic Emission Signal Analysis by Wavelet Method to Investigate Damage Mechanisms during Drilling of Composite Materials ", ASME 2010 10th Biennial conference on Engineering System Design and Analysis, July 2010
75
Mehdi Ahmadi Najafabadi, Javad Teymuri Shandi, "Acoustic Emission and Fracture Characterisitcs of AISI D2 Tool Steel Tempered at Different Temperature ", 10th Biennial Conference on Engineering Systems Design and Analysis ESDA2010
ASME2010, July 2010
76
Amir Refahi Oskouei, Milad Hajikhani, Mehdi Ahmadi Najafabadi, "Damage Progression and Residual Strength Evaluation in Sandwich Panels Loaded at the Center ", Sixth International Conference on
MATERIALS STRUCTURE & MICROMECHANICS OF FRACTURE, June 2010
77
Milad Hajikhani, Amir Refahi Oskouei, Mehdi Ahmadi Najafabadi, "Progressive Fracture Evaluation in Composite Materials by Acoustic Emission Technique ", Sixth International Conference on
MATERIALS STRUCTURE & MICROMECHANICS OF FRACTURE, June 2010
78
Milad Hajikhani, Amir Refahi Oskouei, Mehdi Ahmadi Najafabadi, "Influence of mid-plane layout in mode I delamination of glass/polyester composites by acoustic emission monitoring ", INTERNATIONAL CONGRESS ON ULTRASONICS - ICU 2009, January 2010
79
Yasser Moghani Gharemanloei, Sirous Aghanajafi, Mehdi Ahmadi Najafabadi, "study of relation between stress relieving heat treatment and stress loss of spring under the influence of static loads ", 2nd Conference in the Manufacturing Engineering (NMEC2009), October 2009
80
Gholamreza Davoudi, Abdolreza Rahimi, Mehdi Ahmadi Najafabadi, "Investigation of tool wear estimation methods in turning process ", 2nd Conference in the Manufacturing Engineering (NMEC2009), October 2009
81
Abdolreza Rahimi, Mehdi Ahmadi Najafabadi, Amirali Naghizadeh, "Change in orientation of tool and workpiece in 5-spindle CNC milling machine ", 2nd Conference in the Manufacturing Engineering (NMEC2009), October 2009
82
Gholamreza Davoudi, Abdolreza Rahimi, Mehdi Ahmadi Najafabadi, "Predictive modeling surface roughness of workpiece with regression in turning ", 2nd Conference in the Manufacturing Engineering (NMEC2009), October 2009
83
Gholamreza Davoudi, Abdolreza Rahimi, Mehdi Ahmadi Najafabadi, "Modeling of carbide tool wear with regression in turninig ", 2nd Conference in the Manufacturing Engineering (NMEC2009), October 2009
84
Yasser Moghani Gharenanloei, Mehdi Ahmadi Najafabadi, ُSirous Aghanajafi, "Study of cyclic loading on reduction of free length of heat treated austenite springs ", 2nd Conference in the Manufacturing Engineering (NMEC2009), October 2009
85
Mohammadreza Mehrkusha, Mehdi Ahmadi Najafabadi, Amirhosein Rahmani, "Application of nondestructive testing method (AE) for detection of valve leak in internal combustion engins ", 2nd Conference in the Manufacturing Engineering (NMEC2009), October 2009
86
Amir Refahi Oskouei, Mehdi Ahmadi Najafabadi, "Using an integrated acoustical and mechanical method to evaluate fracture toughness at mode I delamination in composite materials ", Ninth international seminar on Experimental techniques and design in composite materials, September 2009
87
Meysam Akbari, Mehdi Ahmadi Najafabadi, "The application of acoustic emission technique to plastic deformation of low carbon steel ", INTERNATIONAL CONGRESS ON ULTRASONICS - ICU 2009, April 2009
88
Abdolreza Rahimi, Mehdi Ahmadi Najafabadi, Farhad Najarian, Rouzbeh Alipur, "Analytical and experimental investigations of tool flank wear in steel turning ", icme2009, March 2009
89
Ramin Khamedi, Alireza Fallahi Arezodar, Amir Refahi Oskouei, Mehdi Ahmadi Najafabadi, "Wavelet based of Acoustic Emission Signals Processing for Damage Detection in Dual-Phase Steels ", International Congress on Ultrasonics - ICU 2009, January 2009
90
Meysam Akbari, Mehdi Ahmadi Najafabadi, "Experimental Study of Onset of Plastic Deformation in Low Carbon Steel using Acoustic Emission Technique ", 17th NATIONAL SYMPOSIUM ON ULTRASONICS, NSU-XVII, December 2008
91
Ramin Khamedi, Alireza Fallahi Arezodar, Amir Refahi Oskouei, Mehdi Ahmadi Najafabadi, "The Effect of Martensite Phase Volume Fraction of Dual-phase Steels on Acoustic Emission Signals Under Tensile Loading ", 17th NATIONAL SYMPOSIUM ON ULTRASONICS, NSU-XVII, December 2008
92
Ali Bateni, Mehdi Ahmadi Najafabadi, Nader Parvin, "Prediction of density in porous materials by x-ray techniques ", 17th World Conference on Nondestructive Testing, October 2008
93
Ali Bateni, Mehdi Ahmadi Najafabadi, Nader Parvin, "Determination of green density of PM compacts by in situ X-RAY radiography ", 5th International congress on powder metallurgy for automotive parts -
PM AUTO 08, April 2008
94
Mohammad Javad Mahmoodi, Mehdi Ahmadi Najafabadi, "Introducing of Acoustic Emission Technique for Leak Detection in Vessels in Power Industeries ", 22nd International Power System conference, November 2007
95
S.Aboutaleb Kermani, Mehdi Ahmadi Najafabadi, Nasser Rastkhah, Amir Movafeghi, "Sizing of the surface opening cracks by diffraction of ultrasonic waves at cracks end using contact and immersion techniques ", 1st International Conference on Technical Inspection and NDT, October 2007
96
Hossein Heidari Kalhroodi, Amir Refahi Oskouei, Mehdi Ahmadi Najafabadi, "Mechanism of detection of stress corrosion cracking during static U- bend tests on 304 stainless steel by signal processing of acoustic emission ", 3thNDT & Corrosion management Asia Conference, September 2007
97
Amir Refahi Oskouei, Vahid Ansari, Mehdi Ahmadi Najafabadi, "Analyzing of AE Signals by Wavelet to Investigation of Damage Mechanisms in Composite Materials ", International conference on ultrasonics, April 2007
98
Siamak Akhshik, Rasoul Moharrami, Mehdi Ahmadi Najafabadi, "The use of ultrasonic for determination of third-order elastic constants ", International conference on ultrasonics, April 2007
99
Siamak Akhshik, Mehdi Ahmadi Najafabadi, "Ultrasonic non-destructive evaluation of stress around the tip of a crack ", DEFECTOSCOPY 2006, November 2006
100
Siamak Akhshik, Seyed Mohammadnaser Saber, Mehdi Ahmadi Najafabadi, "Non-destructive evaluation of stress around the tip of crack ", The 45th Annual British Conference on NDT, September 2006
101
Seyed Mohammadnaser Saber, Siamak Akhshik, Mehdi Ahmadi Najafabadi, "Experimental and analytical study of AE waves in steel plate ", The 45th Annual British Conference on NDT, September 2006
102
Siyamak Ghadami Badrlou, Mehdi Ahmadi Najafabadi, "Study of machining parameters on acoustic emission signal ", 14th Annual Conference of Mechanical Engineering, May 2006
103
Vahid Pouyafar, Mehdi Ahmadi Najafabadi, "Study on the reasons of debonding of Al2O3 films in heat resistant alloys at high temperature under oxidation atmosphere ", 7th National seminar on surface engineering and heat treatment, May 2006
104
Mehdi Ahmadi Najafabadi, "Deoxidation of iron melt with MgO-C mixture ", Current advances in materials and processes, March 1996
105
Mehdi Ahmadi Najafabadi, "Rate of deoxidation of liquid iron by MgO-C porous tube ", Current advances in materials and processes, November 1995
Taught Courses
#
Course title
Description
Headlines
Date
1
Ultrasonic Flaw Detection & Lab
Learning fundametal concepts of physics of acoustic waves, as well as their propagation, technology, and applications
Spring 2024
2
Advanced Non Destructive Testing
آشنایی با روشهای پیشرفته غیرمخرب جهت استفاده در تحقیقات مواد و بازرسی مراحل در فرآیندهای ساخت و تولید
Spring 2024
3
Non-Destructive Testing
فرآگیری تکنیکهای مختلف آزمونهای غیرمخرب و نحوه استفاده از آنها جهت بررسی کیفی مواد و قطعات پس از اجرای فرآیندهای ساخت
Spring 2024
4
Metal Coating
Learning of advanced methods for enhancement of resistance to wear and corrosion of components and structures for saving them and increasing their lifetime and how to obtain special physical or mechanical properties
Spring 2024
5
Materials Science
Learing of princples of microstructure, mechanical and physical preperties and abilities of materials to be used in manufacturing of engineering components
Fall 2023
6
Principles of Metal Casting
آشنایی با اصول تهیه مذاب ریختهگری و منجمد کردن فلزات به منظور حصول به قطعه با خواص مکانیکی مناسب
Fall 2023
7
Advanced Non Destructive Testing
آشنایی با روشهای پیشرفته غیرمخرب جهت استفاده در تحقیقات مواد و بازرسی مراحل در فرآیندهای ساخت و تولید
Fall 2023
8
Special Topics (Surface Engineering)
This course provides students with an understanding of surface engineering techniques, processes, and technologies used to modify and enhance the properties of surfaces in materials. It covers topics such as surface coatings, treatments, characteriza
Fall 2023
9
Advanced Heat Treatment
-
Fall 2023
10
Advanced Non Destructive Testing
Learning advanced non-destructive methods for use in materials research and inspection of stages in manufacturing processes
Spring 2023
11
Science of Materials
Learing of princples of microstructure, mechanical and physical preperties and abilities of materials to be used in manufacturing of engineering components
Fall 2022
12
Materials Science
Learing of princples of microstructure, mechanical and physical preperties and abilities of materials to be used in manufacturing of engineering components
Fall 2022
13
Advanced Non Destructive Testing
Learning advanced non-destructive methods for use in materials research and inspection of stages in manufacturing processes
Fall 2022
14
Ultrasonic Flaw Detection & Lab
Learning fundametal concepts of physics of acoustic waves, as well as their propagation, technology, and applications
Fall 2022
Inventions/Patents
#
Invention title
Reg. number
Country
contributers
Reg. date
Exp. date
1
Using ultrasonic technique in a automated mechanism for measuring residual stress in oil and gas pipelines
84320
2014/11/1
2034/01/1
2
Direct density measurement of of porous powder metallurgy compacts by radio-graphic method
59020
2009/05/1
-