Effect of fiber orientation on the shear behavior of glass fiber/epoxy composites

被引：78

作者：

Almeida, Jose Humberto S., Jr. ^{[1
]}

Angrizani, Clarissa C. ^{[1
]}

Botelho, Edson C. ^{[2
]}

Amico, Sandro C. ^{[1
]}

机构：

[1] Univ Fed Rio Grande do Sul, PPGE3M, BR-91501970 Porto Alegre, RS, Brazil

[2] UNESP, Dept Mat & Technol, BR-12516410 Guaratingueta, SP, Brazil

来源：

MATERIALS & DESIGN | 2015年 / 65卷

基金：

巴西圣保罗研究基金会;

关键词：

In-plane shear; Interlaminar shear; Non-destructive testing; Laminate; Fabric; Failure mode; HYBRID;

D O I：

10.1016/j.matdes.2014.10.003

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper deals with the study of the influence of the lay-up configuration on interlaminar and in-plane shear properties of glass fiber reinforced epoxy composites. The following laminates were produced by resin transfer molding with vacuum assistance for this study: [0](5), [90](5), [0/90/0/90/0] and randomly oriented (mat). The composites, with similar overall fiber volume fraction, were evaluated based on four tests: double-notched shear, short beam shear, V-notched rail and Iosipescu shear tests. Besides, the dynamic shear modulus was measured with non-destructive testing based on free vibration method. The [0](5) laminate presented interlaminar shear strength almost twice that of [90](5), whereas the mat samples presented higher in-plane shear strength in both tests used due to its random fiber orientation. The dynamic shear modulus was higher for the composites [0](5), as expected due to the longitudinally oriented fibers. Among the shear test methods applied, double-notched and V-notched methods exhibited more auspicious features, possibly due to a more uniform shear stress state during testing. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：789 / 795

页数：7

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