期刊
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
卷 43, 期 8, 页码 1293-1300出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2012.02.015
关键词
Carbon fibre; Polymer matrix composites (PMCs); Interface/interphase; Computational modelling
资金
- Boeing Company
- US National Science Foundation (NSF) [CMMI-0826356]
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [0826356] Funding Source: National Science Foundation
We use molecular dynamics simulations to characterize multilayer graphene reinforced epoxy composites. We focus on two configurations, one where the graphene layers are parallel to polymer/graphene interface and a perpendicular case, and characterize the in situ curing process of the resin and the thermo-mechanical response of the composites. The yield stress of the composites under uniaxial loading normal to the interface is in all cases larger than that of the bulk polymer even after the constraint of the reinforcement to transverse relaxation is taken into account. While both the parallel and normal configurations have very similar strengths, the parallel case exhibits cohesive yield with strain localization and nano-void formation within the bulk polymer while the case with graphene sheets oriented normal to the interface exhibit interfacial debonding. These two mechanisms lead to different post yield behavior and provide key insight for the development of predictive models of carbon fiber polymer composites. (C) 2012 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