مهدی احمدی نجف آبادی - دانشگاه صنعتی امیرکبیر

بررسی و مقایسه ی میزان جذب انرژی ویژه در لوله ی جدارنازک آلومینیومی و لوله ی جدار نازک آلومینیومی تقویت شده با کامپوزیت شیشه/اپوکسی تحت بار شبه استاتیک عرضی

احسان میرزائی و مهدی احمدی نجف آبادی

شهریور 1400

بهینه سازی طراحی پایه ایمپلنت های دندانی

رامین نیک نفس و مهدی احمدی نجف آبادی

شهریور 1399

بررسی تجربی و شبیه سازی المان محدود جذب انرژی و مطالعه مدهای خرابی در لوله های کامپوزیتی رشته پیچی شده با فیبر کربن با استفاده از روش نشر آکوستیک

زهرا نوذری جویباری و مهدی احمدی نجف آبادی

آذر 1398

بررسی تجربی و عددی تأثیر ساختار هندسی الیاف شیشه در لوله های کامپوزیتی تحت نیروی محوری شبه استاتیکی

آرش خدائی و مهدی احمدی نجف آبادی

آبان 1398

محاسبه و اندازه گیری تنش محیطی در فرآیند اتوفرتاژ به روش التراسونیک در نمونه آلومینیومی 1050

حامد صفی خانلو و مهدی احمدی نجف آبادی

شهریور 1398

بررسی خواص مکانیکی کامپوزیت های تقویت شده با نانو فایبرهای تولید شده به روش الکتروریسی

محمد احساندوست و مهدی احمدی نجف آبادی

تیر 1398

بررسی تاثیر ضرایب الاستیک مراتب بالا بر ثابت آکوستوالاستیک فلز تحت بار کششی

نازنین مرکبی اصفهانی و مهدی احمدی نجف آبادی

مهر 1397

افزایش مقاومت به سایش چدن سفید و تخمین عمر عملکرد آن در شرایط کاری واقعی با استفاده از مدلسازی تحلیلی کامپیوتری

حسنا ساعی فر و مهدی احمدی نجف آبادی

تیر 1397

کاربرد امواج صوتی برای اندازه گیری تنش پسماند و تنش خمشی در لوله های پلی اتیلنی انتقال گاز

خشایار خسرویان و مهدی احمدی نجف آبادی

بهمن 1396

بررسی عمر باقیمانده در قطعات کامپوزیتی با استفاده از تست غیر مخرب آکوستیک امیشن

مهدی حبیبی و مهدی احمدی نجف آبادی

بهمن 1396

کاربرد امواج طولی منکسر شده بحرانی برای اندازه گیری تنش های پسماند درلوله های اتو فریتاژ شده

مهدی اسکندری و مهدی احمدی نجف آبادی

بهمن 1396

بررسی صحت و سلامت نمونه های کامپوزیت پلیمری تحت عیب جدایش بین لایه‌ای با استفاده از امواج لمب

حمیدرضا بدخشیان و مهدی احمدی نجف آبادی

مهر 1396

بررسی اثر نانوالیاف نایلون در جدایش بین لایه ای کامپوزیت شیشه/ اپوکسی به روش آکوستیک امیشن

علی قلی زاده و مهدی احمدی نجف آبادی

مهر 1396

بررسی پارامترهای موثر بر انتشار امواح آکوستیکی در کامپوزیتهای شیشه / اپوکسی

مصطفی شیردل و مهدی احمدی نجف آبادی

تیر 1396

بررسی عددی و تجربی خرابی کامپوزیت های شیشه/ اپوکسی سوراخکاری شده تحت بارگذاری خستگی خمشی با استفاده از آزمون غیر مخرب اکوستیک امیشن

نعیم اکبری شاه خسروی و مهدی احمدی نجف آبادی

تیر 1396

بررسی مکانیزمهای خرابی خستگی وصله و ورق در ورق آلومینیومی ترک دار ترمیم شده با کامپیوزت های الیافی بوسیله روش آکوستیک امیشن

عبداله ملکی دیزج و مهدی احمدی نجف آبادی

بهمن 1395

بررسی خرابیهای ایجاد شده در کمانش چند لایه های کامپوزیتی با روش آکوستیک امیشن

انور سوخانی داریسفلی و مهدی احمدی نجف آبادی

بهمن 1395

اندازه گیری تنش پسماند در جوشِ مقاومتی سر به سربه روش آلتراسونیک

علی رضا فرجی الموتی و مهدی احمدی نجف آبادی

مهر 1395

سیدعلی حسینی کازرونی و مهدی احمدی نجف آبادی

بهمن 1394

تعیین ضرایب آکوستوالاستیک در فلزجوش و HAZ در جوشکاری فولاد زنگ نزن آستنیتی

ایمان رحیمی و مهدی احمدی نجف آبادی

مهر 1394

مطالعه تنش پسماند در جوشکاری با فیلرهای LTT

کاوه عزیزپور و مهدی احمدی نجف آبادی

مهر 1394

تفکیک مکانیزم های خرابی ناشی از ضربه روی کامپوزیت چندلایه با استفاده از روش آکوستیک امیشن

سیدعلی مهدی یان اهی و مهدی احمدی نجف آبادی

مهر 1394

اندازه گیری تنش پسماند جوشی فولاد زنگ نزن آستنیتی توسط امواج التراسونیک LCR با حذف تقریب های استفاده شده پیشین در ضرایب آکوستوالاستیک

شایان نژادشمسی و مهدی احمدی نجف آبادی

شهریور 1394

بررسی مکانیزم های خرابی ورق آلومینیومی ترک دار ترمیم شده با کامپوزیت های الیافی بوسیله روش آکوستیک امیشن

میرمحمد موسوی نسب و مهدی احمدی نجف آبادی

شهریور 1394

تعیین مکانیزم های خرابی در چند لایه های کامپوزیتی با استفاده از روش آکوستیک امیشن و شبیه سازی المان محدود

رضا محمدی و مهدی احمدی نجف آبادی

شهریور 1394

مدلسازی تنش پسماند طولی در جوشکاری ورق از جنس فولاد زنگ نزن آستنیتی و ارزیابی آن با دو روش پراش پرتو ایکس و التراسونیک

محمد افتخاری و مهدی احمدی نجف آبادی

مهر 1393

بررسی جدایش بین لایه‌‌ ای در چند لایه های فلز-کامپوزیت و ارزیابی آن با روش آکوستیک امیشن

جابر اسماعیلی کراتی و مهدی احمدی نجف آبادی

مهر 1393

بررسی تئوری به منظور تشخیص عیوب بین لایه ای در کامپوزیت های زمینه پلیمری با استفاده از بارگذاری خمش سه نقطه ای به کمک روش آکوستیک امیشن

برهان صادقی و مهدی احمدی نجف آبادی

مهر 1393

بررسی جدایش بین لایه ای در کامپوزیت های پلیمری تقویت شده با الیاف تحت بارگذاری نوسانی، با روش آکوستیک امیشن

میلاد سعیدی فر و مهدی احمدی نجف آبادی

شهریور 1393

بررسی تنش های پسماند جوشی با کمک امواج آلتراسونیک Lcr در فولاد زنگ نزن آستنیتی

محمود حسنی اورزمان و مهدی احمدی نجف آبادی

دی 1392

بررسی مکانیزم های خرابی در کامپوزیت‌های شیشه/ اپوکسی در مودهای ترکیبی I و II با استفاده از روش غیرمخرب اکوستیک امیشن

حمیدرضا فضایلی و مهدی احمدی نجف آبادی

دی 1392

مدل‌سازی عددی برای تعیین تنش‌های پسماند در یک اتصال جوشی butt welding و مقایسه آن با اندازه گیری به کمک روش التراسونیک

سیدعلی صادقی و مهدی احمدی نجف آبادی

مهر 1392

مطالعه خرابی کامپوزیت‌های شیشه/ پلی استر تحت بار گذاری مود II با استفاده از آنالیز سیگنال های حاصل از آزمون فراصوتی اکوستیک امیشن

پریناز بلال پور دستجردی و مهدی احمدی نجف آبادی

مهر 1392

تفکیک سیگنال های آکوستیک امیشن فرایند سوراخکاری و بار شبه استاتیکی(سوراخکاری پرسی)

نوید ظریف کریمی و مهدی احمدی نجف آبادی

مهر 1392

مدلسازی المان محدود و تجربی شکست کامپوزیت شیشه/اپوکسی در هندسه های مختلف تحت بارگذاری خمشی

مهرداد نظم دارشهری و مهدی احمدی نجف آبادی

اسفند 1391

ارزیابی تنش در محدوده ی های متفاوت از عمق یک قطعه فولاد زنگ نزن استنیتی توسط امواج طولی منکسر شده ی بحرانی

امید افضلی ننیز و مهدی احمدی نجف آبادی

آبان 1391

بررسی تئوری و تجربی خرابی چند لایه های کامپوزیتی بر اثر بار خمش سه نقطه ای و ارزیابی نتایج حاصله توسط آکوستیک امیشن

جلال یوسفی و مهدی احمدی نجف آبادی

مهر 1391

توسعه وکاربرد روش آلتراسونیک جهت اندازه گیری تنشهای پسماند جوشی در یک اتصال لب به لب

محسن نیکخواه و مهدی احمدی نجف آبادی

مهر 1391

تحلیل المان محدود و اندازه گیری تنش پسماند به روش التراسونیک در منطقه HAZ یک اتصال جوشی

محسن خدمت و مهدی احمدی نجف آبادی

شهریور 1391

ارزیابی تنش های پسماند در نمونه های دارای اتصال جوشی از جنس فولاد زنگ نزن آستنیتی به کمک امواج lcr

حامد سلیمی پیرزمان و مهدی احمدی نجف آبادی

خرداد 1391

تاثیر ترتیب جوشکاری بین یک مخزن آلومینیومی استوانه ای و رینگ واسط براعوجاج سازه

حسین مهرعلی و مهدی احمدی نجف آبادی

آبان 1390

بررسی تغییرات ضریب سرعت سیال در نشتی به روش غیر مخرب آکوستیک امیشن

محمدعابد معتصمی و مهدی احمدی نجف آبادی

مهر 1390

بررسی جدا شدن استاتیکی دو لایه از هم در فرایند سوراخکاری مواد مرکب با استفاده از ازمون فراصوتی اکوستیک امیژن

محمد فتوحی و مهدی احمدی نجف آبادی

شهریور 1390

شناسایی مد های خرابی در کامپوزیتها با استفاده از تجزیه و تحلیل سیگنالهای آکوستیک امیشین

فرزاد پشم فروش و مهدی احمدی نجف آبادی

شهریور 1390

بررسی اثر جوشکاری به روش Temper bead بر خواص مکانیکی جوش

وحید شکری و مهدی احمدی نجف آبادی

شهریور 1390

مطالعه تاثیر تنش پسماند در فلزات بر روی سرعت انتشار امواج الاستیک

محمد طاوسیان و مهدی احمدی نجف آبادی

دی 1389

بررسی نشتی در سوپاپ موتور احتراقی توسط آکوستیک امیشن

صادق حسینی و مهدی احمدی نجف آبادی

شهریور 1389

اندازه گیری تنش در فلزات با استفاده از امواج التراسونیک

خالد اذری و مهدی احمدی نجف آبادی

شهریور 1389

مونیتورینگ فرایند رشد ترک با استفاده از تکنیک آکوستیک امیشن

هادی محمدیاری و مهدی احمدی نجف آبادی

تیر 1389

مانیتورینگ فرآیند جدایش بین لایه ای مود I در کامپوزیت با تکنیک آکوستیک امیشن

علیرضا سوری و مهدی احمدی نجف آبادی

تیر 1389

مطالعه تجربی پدیده ی جدایش لایه ای در کامپوزیت های شیشه پلی استر و شیشه اپوکسی و کامپوزیت های ساندویچی به کمک روش آکوستیک امیشن

میلاد حاجی خانی و مهدی احمدی نجف آبادی

خرداد 1389

تعیین تافنس شکست با استفاده از تکنیک آکوستیک امیشن

جواد تیموری شندی و مهدی احمدی نجف آبادی

دی 1388

بررسی شروع تغییر فرم پلاستیک با استفاده از روش آکوستیک امیشن

میثم اکبری و مهدی احمدی نجف آبادی

بهمن 1387

بازسازی امواج آکوستیک امیشن ناشی از نشت

امیر احمدی و مهدی احمدی نجف آبادی

شهریور 1387

اندازه گیری حاصل از رشد ترک بااستفاده از روش آکوستیک امیشن

سعید حاجی قاسمی و مهدی احمدی نجف آبادی

اردیبهشت 1387

شناسایی مکانیزم تولید آکوستیک امیشن در فرایندهای اصطکاکی

سجاد مصطفوی و مهدی احمدی نجف آبادی

اسفند 1386

بررسی خوردگی تحت تن توسط سیگنال آکوستیک امیشن

حسین حیدری کلهرودی و مهدی احمدی نجف آبادی

مهر 1386

پردازش سیگنالهای آکوستیک ایمیشن بدست آمده از یک قطعه کامپوزیتی بوسیله WAVELET

وحید انصاری اوغول بیک و مهدی احمدی نجف آبادی

اسفند 1385

اندازه گیری تنش به روش امواج التراسونیک

سیامک اخشیک و مهدی احمدی نجف آبادی

بهمن 1385

بررسی انتشار امواج آکوستیک ایمیشن در ورق

سیدمحمدناصر صابر و مهدی احمدی نجف آبادی

آبان 1385

بررسی امکان اندازه گیری تنش به وسیله امواج التراسونیک در پیچ

سید محمد عطیفه و مهدی احمدی نجف آبادی

آبان 1385

بررسی تجربی سوراخکاری پلاستیک های تقویت شده و بررسی وضعیت منطقه آسیب بااستفاده از روشهای غیرمخرب

پیمان مرادی و مهدی احمدی نجف آبادی

خرداد 1385

تخمین سایش ابزار بااستفاده از روش اکوستیک ایمیشن

حسن کبوتری و مهدی احمدی نجف آبادی

بهمن 1384

بررسی تاثیر پارامترهای نشت بر سیگنال های اکوستیک ایمیژن در خط لوله

علی علیرضانژاد و مهدی احمدی نجف آبادی

شهریور 1384

مطالعه و بررسی امکان تشخیص عیوب لوله ها در حین بهره برداری ازآنها به روش تست اتوماتیک التراسونیک

سیدابوطالب کرمانی و مهدی احمدی نجف آبادی

اسفند 1380

مطالعه امکانان جام تست غیر مخرب فولاد

مجتبی احمدی نظام آبادی و مهدی احمدی نجف آبادی

آبان 1379

کتب

عنوان

نگارندگان/مترجمان

کشور ناشر

تاریخ انتشار

نسخه

داده های ثبت شده در پورتال

پایش وضعیت

مهدی احمدی نجف آبادی

ایران

1391

Using Acoustic Emission to Evaluate Fracture Toughness Energy Release Rate (GI) at Mode I Delamination of Composite Materials

امیر رفاهی اسکویی, اندریا سوچللی, مهدی احمدی نجف آبادی, جیاجیاکمو میناک

نامشخص

1390

مقالات ژورنال

داده های ثبت شده در پورتال

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", , Vol. 54, Num. 12, Page 11-11, March 2023,

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, Vol. 24, Num. 0, Page 693-707, February 2023,

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, Vol. 0, Num. 0, Page 1-12, January 2023,

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, Vol. 22, Num. 11, Page 647-655, November 2022,

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, Vol. 5, Num. 1, Page 37-42, November 2022,

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, Vol. 57, Num. 1, Page 23-34, October 2022,

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, Vol. 298, Num. 116008, Page 1-9, August 2022,

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, Vol. 29, Num. 0, Page 1911-1936, July 2022,

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", , Vol. 54, Num. 6, Page 7-24, April 2022,

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, Vol. 0, Num. 0, Page 1-24, April 2022,

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, Vol. 0, Num. 0, Page 1-9, April 2021,

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, Vol. 258, Num. 0, Page 1-12, December 2020,

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, Vol. 241, Num. 0, Page 1-14, November 2020,

Hamed Safikhanlu, Mehdi Ahmadi Najafabadi, Sajad Alimirzaeifaradonbeh, "Investigation of autofrettage process in Al 1050 specimens by finite element and experimental method", , Vol. 51, Num. 3, Page 109-117, August 2020,

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, Vol. 137, Num. 0, Page 1-11, July 2020,

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, Vol. 154, Num. 0, Page 1-12, May 2020,

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, Vol. 20, Num. 5, Page 1223-1234, April 2020,

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, Vol. 194, Num. 0, Page 1-13, April 2020,

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, Vol. 19, Num. 12, Page 2917-2925, December 2019,

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, Vol. 10, Num. 6, Page 776-791, November 2019,

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, Vol. 210, Num. 0, Page 470-485, April 2019,

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, Vol. 163, Num. 0, Page 536-574, April 2019,

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, Vol. 152, Num. 0, Page 180-192, November 2018,

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, Vol. 67, Num. 4, Page 1-9, September 2018,

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", , Vol. 18, Num. 4, Page 126-134, July 2018,

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, Vol. 70, Num. 0, Page 363-377, July 2018,

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, Vol. 72, Num. 0, Page 452-463, June 2018,

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, Vol. 37, Num. 1, Page 1-13, January 2018,

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, Vol. 128, Num. 0, Page 145-156, January 2018,

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, Vol. 46, Num. 0, Page 230-237, January 2018,

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, Vol. 144, Num. 0, Page 206-219, January 2018,

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, Vol. 0, Num. 0, Page 1-12, December 2017,

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, Vol. 17, Num. 11, Page 1525-1531, November 2017,

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", , Vol. 17, Num. 8, Page 399-405, October 2017,

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", , Vol. 17, Num. 8, Page 406-412, October 2017,

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, Vol. 0, Num. 0, Page 1-20, October 2017,

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", , Vol. 17, Num. 7, Page 91-100, September 2017,

Reza Mohammadi, Milad Saeedifar, Mehdi Ahmadi Najafabadi, Hossein Hosseini Toudeshky, "Acoustic Emission Based Methodology to Evaluate the Fracture Toughness in Carbon/Epoxy Composites", , Vol. 49, Num. 2, Page 379-386, September 2017,

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, Vol. 0, Num. 0, Page 1-13, August 2017,

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, Vol. 161, Num. 0, Page 505-512, December 2016,

Milad Saeedifar, Mehdi Ahmadi Najafabadi, Hossein Hosseini Toudeshky, Reza Mohammadi, "Investigation of delaminiation initiation and propagation in glass/epoxy composites with acoustic emission technique", , Vol. 48, Num. 8, Page 411-422, December 2016,

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, Vol. 0, Num. 0, Page 1-14, October 2016,

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, Vol. 108, Num. 0, Page 427-435, September 2016,

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", , Vol. 16, Num. 6, Page 345-352, August 2016,

Sadegh Hosseini, Mehdi Ahmadi Najafabadi, Mehdi Akhlaghi, "Using acoustic emission method for lubrication monitoring in a journal bearing in the time- frequency domain", , Vol. 16, Num. 6, Page 171-180, August 2016,

Hoori Sharifinia, Saeid Kazemi Najafi, Mehdi Ahmadi Najafabadi, "Evaluation of fracture behavior of scobs under tensile load using acoustic emission technique", , Vol. 69, Num. 2, Page 339-349, August 2016,

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, Vol. 0, Num. 0, Page 1-12, May 2016,

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, Vol. 0, Num. 0, Page 1-13, April 2016,

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, Vol. 85, Num. 0, Page 113-122, February 2016,

Milad Saeedifar, Mohamad Fotouhi, Mehdi Ahmadi Najafabadi, "Investigation of push-out delamination using cohesive zone modelling and acoustic emission technique", JOURNAL OF COMPOSITE MATERIALS, Vol. 0, Num. 0, Page 1-12, December 2015,

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, Vol. 95, Num. 0, Page 426-434, December 2015,

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, Vol. 0, Num. 0, Page 1-13, November 2015,

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", , Vol. 15, Num. 8, Page 85-92, October 2015,

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, Vol. 0, Num. 0, Page 1-23, September 2015,

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, Vol. 0, Num. 0, Page 1-11, September 2015,

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, Vol. 0, Num. 0, Page 1-11, April 2015,

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, Vol. 124, Num. 0, Page 120-127, January 2015,

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, Vol. 0, Num. 0, Page 1-16, January 2015,

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, Vol. 0, Num. 0, Page 1-12, November 2014,

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", , Vol. 14, Num. 11, Page 1-8, October 2014,

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, Vol. 33, Num. 19, Page 1767-1782, September 2014,

Milad Saeedifar, Mohamad Fotouhi, Reza Mohammadi, Mehdi Ahmadi Najafabadi, Milad Hajikhani, "Classification of damage mechanisms during delamination growth in sandwich composites byacoustic emission", , Vol. 14, Num. 6, Page 144-152, August 2014,

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", , Vol. 14, Num. 4, Page 1-11, May 2014,

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", , Vol. 14, Num. 3, Page 78-84, May 2014,

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, Vol. 33, Num. 0, Page 481-492, April 2014,

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), Vol. 4, Num. 1, Page 22-30, March 2014,

Yashar Javadi, Mehdi Akhlaghi, Mehdi Ahmadi Najafabadi, "Nondestructive Evaluation of Welding Residual Stresses in Austenitic Stainless Steel Plates", RESEARCH IN NONDESTRUCTIVE EVALUATION, Vol. 0, Num. 25, Page 30-43, March 2014,

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, Vol. 1, Num. 2, Page 329-334, March 2014,

Navid Zarif Karimi, Hosein Heidary, Mehdi Ahmadi Najafabadi, Abdolreza Rahimi, Mehdi Farajpur, "Monitorng of residual tensile strength in drilled composite laminates by acoustic emission", , Vol. 13, Num. 15, Page 169-183, March 2014,

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, Vol. 39, Num. 2, Page 1325-1335, March 2014,

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, Vol. 228, Num. 3, Page 253-265, February 2014,

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, Vol. 0, Num. 0, Page 1-13, January 2014,

Mohamad Fotouhi, Mehdi Ahmadi Najafabadi, "Acoustic emission-based study to characterize the initiation of delamination in composite materials", JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS, Vol. 0, Num. 0, Page 1-19, January 2014,

Yashar Javadi, Seyedali Sadeghi, Mehdi Ahmadi Najafabadi, "Taguchi optimization and ultrasonic measurement of residual stresses in the friction stir welding", MATERIALS & DESIGN, Vol. 55, Num. 0, Page 27-34, January 2014,

Cevat Teymuri Sindi, Mehdi Ahmadi Najafabadi, Manouchehr Salehi, "Tribological Behavior of Sheet Metal Forming Process Using Acoustic Emission Characteristics", TRIBOLOGY LETTERS, Vol. 51, Num. 2, Page 1-15, August 2013,

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, Vol. 52, Num. 0, Page 870-880, July 2013,

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, Vol. 41, Num. 5, Page 788-797, April 2013,

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, Vol. 227, Num. 3, Page 286-296, March 2013,

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, Vol. 0, Num. 0, Page 0-0, March 2013,

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, Vol. 4, Num. 1, Page 170-174, February 2013,

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, Vol. 49, Num. 0, Page 591-601, February 2013,

Yashar Javadi, Omid Afzali Naniz, Mohammadreza Hadizadeh Raeisi, Mehdi Ahmadi Najafabadi, "Nondestructive Evaluation ofWelding Residual Stresses in Dissimilar Welded Pipes", JOURNAL OF NONDESTRUCTIVE EVALUATION, Vol. 0, Num. 0, Page 0-0, January 2013,

Yashar Javadi, Mehdi Ahmadi Najafabadi, "Comparison between Contact and Immersion Ultrasonic Method to Evaluate Welding Residual Stresses of Dissimilar Joints", MATERIALS & DESIGN, Vol. 47, Num. 0, Page 473-482, January 2013,

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, Vol. 45, Num. 0, Page 628-642, January 2013,

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, Vol. 110-116, Num. 0, Page 1221-1228, December 2012,

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, Vol. 0, Num. 0, Page 0-0, November 2012,

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, Vol. 48, Num. 9, Page 541-552, November 2012,

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, Vol. 0, Num. 0, Page 0-0, October 2012,

, , Mehdi Ahmadi Najafabadi, "Acoustic emission-based damage classification of glass/polyester composites using harmony search k-means algorithm", JOURNAL OF REINFORCED PLASTICS AND COMPOSITES, Vol. 31, Num. 10, Page 671-680, May 2012,

Navid Zarif Karimi, Hossein Heidary Kalahroodi, Mehdi Ahmadi Najafabadi, "Residual tensile strength monitoring of drilled composite materials by acoustic emission", MATERIALS & DESIGN, Vol. 40, Num. 0, Page 229-236, April 2012,

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, Vol. 110-116, Num. 0, Page 1221-1228, January 2012,

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, Vol. 110-116, Num. 0, Page 3617-3623, January 2012,

Behnaz Tajik, Abbas Abbassi, Majid Saffar-Avval, Mehdi Ahmadi Najafabadi, "Ultrasonic properties of suspensions of TiO2 and Al2O3 nanoparticles in water", POWDER TECHNOLOGY, Vol. 217, Num. 0, Page 171-176, January 2012,

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, Vol. 37, Num. 0, Page 416-422, January 2012,

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, Vol. 0, Num. 0, Page 1-20, January 2012,

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, Vol. 0, Num. 0, Page 0-0, January 2012,

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", , Vol. 22, Num. 2, Page 1-16, December 2011,

, , 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, Vol. 30, Num. 17, Page 1481-1493, October 2011,

100

, 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, Vol. 0, Num. 0, Page 1-14, September 2011,

101

Ali Bateni, Nader Parvin, Mehdi Ahmadi Najafabadi, "Density evaluation of powder metallurgy compacts using in situ X-ray radiography", POWDER METALLURGY, Vol. 54, Num. 3, Page 1-4, September 2011,

102

, , Mehdi Ahmadi Najafabadi, "Damage Characterization of Glass/Epoxy Composite Under Three-Point Bending Test Using Acoustic Emission Technique", JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, Vol. 0, Num. 0, Page 1-11, August 2011,

103

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, Vol. 47, Num. 7, Page 491-500, July 2011,

104

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, Vol. 0, Num. 0, Page 1-7, May 2011,

105

Ali Moarefzadeh, Mehdi Ahmadi Najafabadi, "Finite Element Simulation of Plasma Arc Welding Process for Ferrite Stainless Steel", Majlesi Journal of Mechanical Engineering, Vol. 4, Num. 3, Page 67-74, May 2011,

106

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, Vol. 32, Num. 5, Page 3059-3065, April 2011,

107

Cevat Teymuri Sindi, Mehdi Ahmadi Najafabadi, Seyed Ali Ebrahimian, "Fracture Toughness Determination of Heat Treated AISI D2 Tool Steel Using AE Technique", ISIJ INTERNATIONAL, Vol. 51, Num. 2, Page 305-312, March 2011,

108

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, Vol. 465, Num. 0, Page 535-538, January 2011,

109

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, Vol. 465, Num. 0, Page 527-530, January 2011,

110

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, Vol. 32, Num. 3, Page 1444-1455, January 2011,

111

Amir Refahi Oskouei, Mehdi Ahmadi Najafabadi, "Acoustic Emission Characteristics of Mode I Delamination in Glass/Polyester Composites", Journal of composite materials, Vol. 44, Num. 0, Page 0-0, April 2010,

112

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, Vol. 32, Num. 1, Page 3-7, April 2010,

113

Amir Refahi Oskouei, Mehdi Ahmadi Najafabadi, "Fracture Strength Distribution in E-Glass Fiber Using Acoustic Emission", Journal of Composite Materials, Vol. 44, Num. 6, Page 0-0, March 2010,

114

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, Vol. 42, Num. 2, Page 0-0, March 2009,

115

Mojtaba Ayatollahy, Shahriar Fariborz, Mehdi Ahmadi Najafabadi, "Anti-plane elastodynamic analysis of planes with multiple defects", Applied Mathematical Modelling, Vol. 33, Num. 2, Page 0-0, February 2009,

116

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, Vol. 41, Num. 5, Page 371-381, July 2008,

117

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, Vol. 19, Num. 68, Page 55-62, June 2008,

118

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, Vol. 40, Num. 4, Page 0-0, June 2007,

119

Mehdi Ahmadi Najafabadi, "Decarburization of lron Melt by an Immersed Al2O3-Fe2O3 PorousTube", ISIJ Internationa, Vol. 37, Num. 1, Page 0-0, January 1998,

120

Mehdi Ahmadi Najafabadi, "Deoxidation of lron Melt with Immersed MgO-C Porous Tube", ISIJ International, Vol. 36, Num. 11, Page 0-0, November 1996,

121

Mehdi Ahmadi Najafabadi, "Simultaneous Decarburization and Denitrogenization of Molten lron with Vacuum Suction Degassing Method", ISIJ International, Vol. 36, Num. 10, Page 0-0, October 1996,

مقالات کنفرانس

داده های ثبت شده در پورتال

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Jaber Esmaeeli Karati, Mehdi Ahmadi Najafabadi, "Study of delamination in composite materials under mode I loading using acoustic emission method ", ISAV 2014, December 2014

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

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

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

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

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

Mehdi Ahmadi Najafabadi, "Nondestructive measurement of residual stress caused in pipe girth weld ", 5th Iranian Pipe & Pipeline Conference, December 2013

, 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

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

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

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

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

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

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

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

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

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

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

Mohamad Fotouhi, , Mehdi Ahmadi Najafabadi, "Monitoring of initiation and growth of delamination using acoustic emission and energy function ", ICME 2011, December 2011

, 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

, , 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

Mohamad Fotouhi, , , Mehdi Ahmadi Najafabadi, "Detection of damage mechanisms in delamination of composite materials using wavelet analysis ", ICME 2011, December 2011

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

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

, 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

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

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

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

, , 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

, 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

, 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

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

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

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

, , 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

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

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

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

Mehdi Ahmadi Najafabadi, "Corrosion wear of internal wall in the oil and gas pipelines ", 3rd Iranian pipe & pipeline conference, May 2011

, , 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

, , , 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

Sadegh Hosseini, , , Mehdi Ahmadi Najafabadi, "Leak detection methods in transmission pipelines with NDT acoustic emission ", 3rd Iranian pipe & pipeline conference, May 2011

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

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

, , 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

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

, Hossein Heidary Kalahroodi, Mehdi Ahmadi Najafabadi,, "monitoring of delamination in drilling operation by acoustic emission ", irans second international conference on industrial automation, February 2011

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

, , 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

, 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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Abdolreza Rahimi, Mehdi Ahmadi Najafabadi, Farhad Najarian, Rouzbeh Alipur, "Analytical and experimental investigations of tool flank wear in steel turning ", icme2009, March 2009

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

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

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

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

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

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

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

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

Amir Refahi Oskouei, Vahid Ansari Oghol Beyk, Mehdi Ahmadi Najafabadi, "Analyzing of AE Signals by Wavelet to Investigation of Damage Mechanisms in Composite Materials ", International conference on ultrasonics, April 2007

Siamak Akhshik, Rasoul Moharrami, Mehdi Ahmadi Najafabadi, "The use of ultrasonic for determination of third-order elastic constants ", International conference on ultrasonics, April 2007

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

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تاریخ همکارى و توضیحات

مهندسی مکانیک مدرس

دروس ارائه شده

عنوان درس

توصیف درس

سرفصل ها

دوره درسی

Advanced Non Destructive Testing

Learning advanced non-destructive methods for use in materials research and inspection of stages in manufacturing processes

Spring 2023

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

Special Topics (Ultrasonic Flaw Detection & Lab.)

Learning fundametal concepts of physics of acoustic waves, as well as their propagation, technology, and applications

Fall 2022

Advanced Non Destructive Testing

Learning advanced non-destructive methods for use in materials research and inspection of stages in manufacturing processes

Fall 2022

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

Materials Science

Learing of princples of microstructure, mechanical and physical preperties and abilities of materials to be used in manufacturing of engineering components

Spring 2022

Advanced Non Destructive Testing

Learning advanced non-destructive methods for use in materials research and inspection of stages in manufacturing processes

Spring 2022

Materials Science

Learing of princples of microstructure, mechanical and physical preperties and abilities of materials to be used in manufacturing of engineering components

Fall 2021

Advanced Non Destructive Testing

Learning advanced non-destructive methods for use in materials research and inspection of stages in manufacturing processes

Fall 2021

اختراعات/ ثبت پتنت

عنوان اختراع

شماره ثبت

کشور ثبت کننده

همکاران

تاریخ ثبت

تاریخ انقضا

داده های ثبت شده در پورتال

مکانیزم اندازه گیری اتوماتیک تنش پسماند در خطوط لوله نفت و گاز و مخازن با روش التراسونیک

84320

میلاد سعیدی فر, مهدی احمدی نجف آبادی, رضا محمدی

1393/8/10

1412/10/12

اندازه گیری مستقیم دانسیته قطعات متخلخل پودری به روش رادیوگرافی

59020

Iran (Islamic Republic of)

علی باطنی , مهدی احمدی نجف آبادی, نادر پروین

1388/2/11

دستگاه اندازه‌گیری استحکام کششی و پیچشی قطعات به طور همزمان در صورت نیاز تحت فشار داخلی و دماهای متفاوت

55677

Iran (Islamic Republic of)

بابک سلطان نیا, میلاد حاجی خانی, مهدی احمدی نجف آبادی, بیژن ملائی داریانی

1387/9/11

1390/9/10