Macro and micro deformations in a sandwich foam core

被引：4

作者：

Chang, S ^{[1
]}

Hong, D ^{[1
]}

Chiang, FP ^{[1
]}

机构：

[1] SUNY Stony Brook, Dept Mech Engn, Stony Brook, NY 11794 USA

来源：

COMPOSITES PART B-ENGINEERING | 2004年 / 35卷 / 6-8期

关键词：

foam; electron microscopy; micro-mechanics; speckle methods;

D O I：

10.1016/j.compositesb.2003.11.011

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Most of the current theoretical and experimental investigations deal with macro/global response of sandwich materials. However, damages are often initiated microscopically. Thus it is necessary that one investigates the micro-mechanics as well as macro-mechanics damage mechanisms of such a material. Two digital random speckle techniques (one macro and one micro) are introduced to map the full field deformation surrounding a crack in the foam core of a sandwich beam. We find that at the macro-scale the deformation pattern is quite similar to that in a homogeneous and isotropic material. However at the micro-scale, the deformation pattern is quite complicated. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：503 / 509

页数：7