Determining the characteristics of acoustic emission in the fatigue crack growth of aluminum alloy ۲۰۲۵ for online structural monitoring

سال انتشار: 1400
محل انتشار: نوزدهمین کنفرانس بین المللی انجمن هوافضای ایران
کد COI اختصاصی: AEROSPACE19_184
زبان مقاله: انگلیسی
تعداد مشاهده: 480

نویسندگان

M. Sc. Graduated of Aerospace engineering, Shahid Sattari Aeronautical University,

Professor, Department of Mechanical Engineering, Amirkabir University of Technology

چکیده

In the use of metals, due to industrial advances and the application of more dynamic loads, it is necessary to pay more attention to the fatigue issue. Non-destructive inspection methods are used to condition and health monitoring of structures at the time of production and even during the service life of parts. Among non-destructive methods, the acoustic emission method has become a standard and reliable method in recent years. In this project, the characteristics of acoustic emission in the fatigue crack growth of aluminum alloy ۲۰۲۵ for online structural monitoring have been investigated and determined. Acoustic emission tests have been performed in two parts: bending fatigue test with the aim of initiation of fatigue cracks in aluminum alloy ۲۰۲۵ specimens and following tensile tests with the aim of growth of fatigue cracks. The acoustic emission signals and parameters sent by the acoustic emission sensor during both tests were received and recorded by the acoustic emission software. According to the received acoustic emission information, various diagrams are plotted. Analyzing the results from online acoustic emission monitoring showed, the acoustic emission method can be considered as a suitable and reliable technique for detecting crack initiation and crack growth in aluminum alloy ۲۰۲۵

کلیدواژه ها

Bending Fatigue Test- Tensile Test- Acoustic Emission Test- Aluminum Alloy ۲۰۲۵- Acoustic Emission Counts

مقالات مرتبط جدید

اطلاعات بیشتر در مورد COI

COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.

کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.