The fracture toughness of composite laminates with a negative Poisson's ratio

被引：124

作者：

Donoghue, J. P. ^{[2
]}

Alderson, K. L. ^{[1
]}

Evans, K. E. ^{[2
]}

机构：

[1] Univ Bolton, Ctr Mat Res & Innovat, Bolton BL3 5AB, England

[2] Univ Exeter, Sch Engn Comp & Math, Exeter EX4 4QF, Devon, England

来源：

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2009年 / 246卷 / 09期

关键词：

DESIGN; MANUFACTURE; BEHAVIOR;

D O I：

10.1002/pssb.200982031

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Two sets of carbon fibre laminate configurations have been designed manufactured and examined. The first consisted of one in plane auxetic (i.e. having a negative Poisson's ratio) and one with matched elastic moduli, but a positive in-plane Poisson's ratio. The second consisted of three laminate again with matched elastic moduli but with negative, near zero and positive thru-thickness Poisson's ratio. Fracture toughness is predicted to be enhanced if a negative thru-thickness Poisson's ratio is present. This study also shows that more energy is required to propagate a crack in the auxetic laminate and that is less notch sensitive than its conventional counterpart for the negative in-plane Poisson's ratio. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：2011 / 2017

页数：7

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