Bio-inspired laminate design exhibiting pseudo-ductile (graceful) failure during flexural loading

被引：42

作者：

Malkin, Robert ^{[1
]}

Yasaee, Mehdi ^{[1
]}

Trask, Richard S. ^{[1
]}

Bond, Ian P. ^{[1
]}

机构：

[1] Univ Bristol, Adv Composites Ctr Innovat & Sci, Dept Aerosp Engn, Bristol BS8 ITR, Avon, England

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2013年 / 54卷

关键词：

Carbon fibre; Laminates; Damage tolerance; Stress concentrations; MECHANICAL-PROPERTIES; DISCONTINUOUS PLIES; NACRE; DELAMINATION; STRENGTH; MOTHER; PEARL; BONE; KEY;

D O I：

10.1016/j.compositesa.2013.07.008

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Discontinuous reinforcement phases are often observed in high toughness natural materials, for example, nacre. The aim of this study is to introduce a degree of 'pseudo-ductility' to fibre reinforced polymer materials by exploiting such discontinuities. The work presented aims to take a simple concept of discrete material sections and apply it in the form of ply cuts in a carbon fibre reinforced polymer. A variety of specimen types which encompass the principles inspired by the architecture of nacre were tested in four point bend flexure and the failure processes investigated. Finite element analysis was also carried out to understand stress conditions around ply cuts and their role in the observed failure. It was observed that ply cut spacing and ply cut density were important parameters in achieving 'pseudo-ductile' failure. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：107 / 116

页数：10

共 22 条

[1]

ASTM, 2009, ANN BOOK ASTM STAND, V02

[2] On the mechanics of mother-of-pearl: A key feature in the material hierarchical structure [J].