مهندسی مکانیک مدرس

مهندسی مکانیک مدرس

بازرسی غیرمخرب ترک‌های زیرسطحی در مواد مرکب زمینه پلیمری تقویت شده با الیاف کربن و الیاف شیشه به کمک روش برشنگاری دیجیتالی

نوع مقاله : پژوهشی اصیل

نویسندگان
محمد تیزمغزنژاد 1
داود اکبری 2
1 دانشکده مهندسی مکانیک، دانشگاه تربیت مدرس، تهران، ایران
2 استادیار، دانشکده مهندسی مکانیک، دانشگاه تربیت مدرس، تهران، ایران
10.52547/mme.22.5.311
چکیده
برش­نگاری دیجیتالی یکی از روش­های نوین آزمون­های غیرمخرب مبتنی بر نور لیزر است که برای اندازه­گیری مشتق جابه­جایی سطوح مورد استفاده قرار گرفته و به­سرعت درحال توسعه و توانمدندسازی می­باشد. در این روش با تکیه بر تداخل امواج لیزر بازتاب شده از سطح جسم، گرادیان جابه­جایی نمونه تغییرشکل یافته تحت نوعی از بارگذاری، به­طور مستقیم اندازه­گیری می­شود، لذا امکان ارزیابی غیرتماسی و تمام میدانی قطعه با سرعت و دقت بالا فراهم می­گردد. یکی از مزایای عمده این روش، توانایی آن در شناسایی عیوب زیرسطحی در مواد مختلف از جمله کامپوزیت­ها می­باشد. در این مقاله نمونه­های دارای ترک زیرسطحی از جنس مواد مرکب تقویت شده با الیاف شیشیه و الیاف کربن به کمک آزمون برش­نگاری دیجیتالی مورد بازرسی قرار گرفته­اند. همچنین مقادیر بهینه هر یک از پارامترهای اصلی برش­نگاری شامل اندازه بارگذاری و فاصله برش، برای هر جنس با استفاده از طراحی آزمایش به روش تاگوچی بدست آمده است. نتایج نشان می­دهد که برای هر نوع ماده­ای یک مقدار بهینه از بارگذاری و اندازه برش وجود دارد که در صورت اعمال آن­ها بهترین نتایج آزمون حاصل می­گردد.
کلیدواژه‌ها
تداخل‌سنجی لیزری برشی
مواد مرکب
الیاف کربن
الیاف شیشه
عیب ترک

موضوعات

عنوان مقاله English

Non-destructive Inspection of Subsurface Cracks in Carbon-fiber and Glass-fiber Reinforced Polymeric Materials Using Digital Shearography Method

نویسندگان English

mohammad tizmaghznejad 1
davood akbari 2
1 msc. Faculty of mechanical Engineering, Tarbiat Modares university tehran, iran
2 assistant Professor, Faculty of mechanical engineering, Tehran, Iran
چکیده English

Digital Shearography is one of the new methods of non-destructive testing based on the laser beam which is used to measure the surface displacement derivatives. In this method, relying on the interference of two laser waves reflected from the object surface, the displacement gradient of the deformed sample can be measured directly. So that it is possible to evaluate the industrial parts in a non-contact and full-field way with a high speed and accuracy. One of the significant advantages of this method is the ability to detect subsurface defects in various materials, including composites. In this paper, samples with subsurface cracks made of composite materials reinforced with glass fibers and carbon fibers have been inspected by Digital Shearography testing. Also, the optimal values ​​of each main parameter such as shear distance and loading size for each material have been obtained using the Taguchi experiment design. The results show that for each type of material there is an optimal amount of loading amount and shear distance, which if applied, the best test results are obtained.

کلیدواژه‌ها English

Laser interferometry
Composites
Carbon Fiber
glass fiber
Crack defect
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مهندسی مکانیک مدرس
دوره 22، شماره 5
اردیبهشت 1401
صفحه 311-322