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

PDF URL: http://www.ije.ir/Vol31/No1/A/15.pdf  
downloaded Downloaded: 23   viewed Viewed: 234

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.


1.      Watsar, S.D. and Bharule, A., "Stress analysis of finite plate with special shaped cutout",  International Journal of Scientific Engineering and Research, Vol. 3, No. 4, (2015), 145-150.

2.      Woo, J.-H. and Na, W.-B., "Effect of cutout orientation on stress concentration of perforated plates with various cutouts and bluntness", International Journal of Ocean System Engineering,  Vol. 1, No. 2, (2011), 95-101.

3.      Rezaeepazhand, J. and Jafari, M., "Stress analysis of perforated composite plates", Composite Structures,  Vol. 71, No. 3, (2005), 463-468.

4.      Martin, E., Leguillon, D. and Carrère, N., "A coupled strength and toughness criterion for the prediction of the open hole tensile strength of a composite plate", International journal of Solids and Structures,  Vol. 49, No. 26, (2012), 3915-3922.

5.      Yang, Z., Kim, C.-B., Cho, C. and Beom, H.G., "The concentration of stress and strain in finite thickness elastic plate containing a circular hole", International journal of Solids and Structures,  Vol. 45, No. 3, (2008), 713-731.

6.      Talib, A.A., Ramadhan, A., Rafie, A.M. and Zahari, R., "Influence of cut-out hole on multi-layer kevlar-29/epoxy composite laminated plates", Materials & Design,  Vol. 43, (2013), 89-98.

7.      Aljibori, H.S.S., Chong, W., Mahlia, T., Chong, W., Edi, P., Al-Qrimli, H., Anjum, I. and Zahari, R., "Load–displacement behavior of glass fiber/epoxy composite plates with circular cut-outs subjected to compressive load", Materials & Design,  Vol. 31, No. 1, (2010), 466-474.

8.      Riyah, N. and Ahmed, N., "Stress analysis of composite plates with different types of cutouts", Anbar Journal of Engineering Sciences,  Vol. 2, No. 1, (2009), 11-29.

9.      Mohan, K.M., Rajesh, S., Yogesh, H. and Yeshaswini, B., "Study on the effect of stress concentration on cutout orientation of plates with various cutouts and bluntness", International Journal of Modern Engineering Research,  Vol. 3, No. 3, (2013), 1295-1303.

10.    Kuraishi, A., Tsai, S.W. and Wang, J., "Material characterization of glass, carbon, and hybrid-fiber scrimp panels", Report SAND2002-3538, Stanford University, Department of Aeronautics and Astronautics,  (2002), 28-35.

11.             Azmir, M. and Ahsan, A., "Investigation on glass/epoxy composite surfaces machined by abrasive water jet machining", Journal of Materials Processing Technology,  Vol. 198, No. 1, (2008), 122-128.

Download PDF 

International Journal of Engineering
E-mail: office@ije.ir
Web Site: http://www.ije.ir