期刊
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
卷 42, 期 5, 页码 462-470出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2011.01.002
关键词
Polymer-matrix composites (PMCs); Impact behaviour; Mechanical properties
资金
- Portuguese Foundation for Science and Technology (FCT) [PTDC/EME-PME/64984/2006]
- Fundação para a Ciência e a Tecnologia [PTDC/EME-PME/64984/2006] Funding Source: FCT
This paper presents an experimental investigation of the strain rate effect on unidirectional carbonepoxy IM7-8552 loaded in longitudinal compression. A dynamic compression fixture was developed for a split-Hopkinson pressure bar to test flat rectangular specimens. The dynamic experiment was designed by finite element analysis, using an axis-symmetric elastic model of the test setup. Due to the linear specimen stress-strain behaviour, ramp-shaped incident pulses were used, to ensure a constant strain rate and dynamic equilibrium throughout the test. The results from the split-Hopkinson pressure bar experiments at an average strain rate of about 100 s(-1) were compared with quasi-static test results using the same test setup. It was found that the longitudinal compressive modulus is not strain rate sensitive while a significant increase was observed for the longitudinal compressive strength. (C) 2011 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据