Theoretical and experimental study on the influence of fiber orientation on the tensile properties of unidirectional carbon fiber/epoxy composite

被引:14
|
作者
Mohamed, Yasser S. [1 ]
Abdelbary, Ahmed [2 ]
机构
[1] Alexandria Univ, Fac Engn, Dept Mech Engn, Alexandria, Egypt
[2] Egyptian Armed Forces, Cairo, Egypt
关键词
Carbon fiber; Epoxy resin; Fiber orientation; Tensile strength; Young?s modulus; Failure theories; MECHANICAL-PROPERTIES; FATIGUE;
D O I
10.1016/j.aej.2022.12.058
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Probably-one of the most popular advantages of fiber-reinforced polymer composites is the capability to tailor their mechanical properties and, therefore, their behavior to an externally applied load. Regarding the layup manufacturing process, fiber orientation plays a fundamental role in the tensile resistance of carbon fiber-reinforced epoxy CFRE composites. Therefore, this work is aimed to realize a better understanding of the influence of fiber orientation on the tensile properties of CFRE composites. The study is conducted mathematically and experimentally on test samples with 0 degrees, 30 degrees, 45 degrees, 60 degrees, and 90 degrees fiber orientations. The maximum tensile stress values obtained from tensile tests are compared to the calculated ones through four basic failure models; maximum stress, maximum strain, Tsai-Hill, and Tsai-Wu. The results of the investigation indicate that the error between theoretical and measured values are highly affected by the fiber orientation of the composite. The experiments demonstrate that the resistance of CFRE composite to the tensile loading is mainly dependent on the fiber orientation. In particular, test specimens with 0 degrees fiber ori-entation show maximum failure resistance (r = 2857 MPa) compared to other orientations. Addi-tionally, the orientation of fiber is found to have a substantial influence on the composites' Young's modulus. Maximum tensile strain at Yield (7.1 %) is obtained at 45 degrees fiber orientation. The findings are anticipated to be guidelines for the design optimization of CFRE composite subjected to pure tension force.(c) 2022 THE AUTHORS. Published by Elsevier BV on behalf of Faculty of Engineering, Alexandria University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/ licenses/by-nc-nd/4.0/).
引用
收藏
页码:693 / 705
页数:13
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