Effect of through-thickness compression on in-plane tensile strength of glass/epoxy composites: Experimental study

详细信息    查看全文

• 作者：Deng'an Cai^a ; ^b ; Guangming Zhou^a ; ^{zhougm@nuaa.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Vadim V. Silberschmidt^b
• 关键词：Glass/epoxy composites ; Through-thickness compression ; In-plane tension ; Failure mode
• 刊名：Polymer Testing
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：49
• 期：Complete
• 页码：1-7
• 全文大小：2404 K

文摘

The effect of through-thickness compression on in-plane tensile strength of glass/epoxy composites with random microstructure was investigated experimentally. The studied composite laminates were manufactured with a self-regulating Resin Transfer Moulding device. Their mechanical behaviour was assessed in pure in-plane tensile and through-thickness compressive tests, followed by biaxial tests combining both loading modes; indenters with a radius ranging from 5 to 25 mm were used to impose a compressive mode. The obtained results demonstrate a nonlinear decreasing trend for the in-plane tensile strength under the growing through-thickness compressive stress. All the failed specimens showed catastrophic brittle failure with a specific fracture orientation that mainly exhibited a tensile mode of fibre fracture for smaller radii of indenters and a combination of matrix crack, fibre fracture and typical shear failure for larger radii.