IJE TRANSACTIONS A: Basics Vol. 31, No. 1 (January 2018) 104-109   

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K. Priya Jhanji, R. Amit Kumar and PVN Likhith
( Received: May 30, 2017 – Accepted in Revised Form: November 30, 2017 )

Abstract    Use of composites for a range of structural application in aircrafts, space-crafts, automobiles, etc., has widely spread in the last few years. Other than weight reduction, cut-outs provide pathways to link different aircraft parts. In this paper, an experimental investigation was conducted to study the effect of a cut-out on the tensile strength of the fiber glass/ epoxy composite plate. Geometry of the cut-out is one of the important factors which can critically alter the mechanical properties. So, cut-outs with various geometrical shapes such as square and circle were introduced in the fiber glass/ epoxy composite plate and tensile tests were performed under ambient conditions. It was determined from the tests that specimens with circular cut-out have higher tensile strength as compared to specimens with square cut-out.


Keywords    Composites, Cut-outs, stress concentration, mechanical properties, tensile strength


چکیده    استفاده از کامپوزیت­ها برای طیف وسیعی از کاربردهای سازه­ای در هواپیما، سفینه­های فضایی، خودرو و غیره در چند سال اخیر به طور گسترده­ای گسترش یافته است. به غیر از کاهش وزن، قطعات بریده شده روش­هایی را برای اتصال قطعات مختلف هواپیما فراهم می­کنند. در این مقاله، یک مطالعه­ی تجربی برای بررسی تأثیر شکل برش بر روی مقاومت کششی ورق کامپوزیت شیشه الیاف/اپوکسی انجام شده است. هندسه­ی برش از عوامل مهمی است که می­تواند خواص مکانیکی را به طور چشم­گیری تغییر دهد. بنابراین، قطعات بریده شده از صفحه­ی کامپوزیتی فیبر شیشه/اپوکسی با اشکال هندسی مختلف مانند مربع و دایره انتخاب و آزمایش­های کششی تحت شرایط محیطی انجام گرفت. از این آزمون­ها مشخص شد که آزمونه­های با برش دایره­ای دارای استحکام کششی بالاتر نسبت به نمونه­هایی با برش مربع هستند.


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