Nonlinear constitutive equation for temperature degraded unidirectional carbon fiber reinforced epoxy

被引：1

作者：

Dey, B. ^{[1
]}

Zhou, Yuanxin ^{[1
]}

Jeelani, Shaik ^{[1
]}

Kumar, Ashok ^{[2
]}

Stephenson, L. D. ^{[2
]}

机构：

[1] Tuskegee Univ, Ctr Adv Mat, Tuskegee, AL 36088 USA

[2] USA, Corps Engineers, Engn Res & Develop Ctr, Washington, DC USA

来源：

MATERIALS LETTERS | 2008年 / 62卷 / 21-22期

关键词：

carbon/epoxy composite; degradation; damage model;

D O I：

10.1016/j.matlet.2008.04.024

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this study, unidirectional carbon fiber reinforced epoxy was made by vacuum-assisted resin transfer molding (VARTM). Accelerated tests have been conducted on resulting composites at different temperature and different time. Flexural tests results show that modulus and strength decreased with increasing of time and temperature. Based on the experimental result, a linear damage model has been combined with the Weibull distribution function to establish a constitutive equation for carbon/epoxy composite. The parameters in this model are the modulus E, the Weibull shape parameter and Weibull scale parameter. The simulated stress-strain curves from the model are in good agreement with the test data. All three parameters were found to be temperature and time dependent. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：3659 / 3662

页数：4

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