Experimental investigation of compression failure of sandwich specimens with face/core debond

被引：63
|
作者：
Vadakke, V [1 ]
Carlsson, LA [1 ]
机构：
[1] Florida Atlantic Univ, Dept Mech Engn, Boca Raton, FL 33431 USA
来源：
COMPOSITES PART B-ENGINEERING | 2004年 / 35卷 / 6-8期
关键词：
buckling; debonding; fracture toughness; sandwich construction;
D O I：
10.1016/j.compositesb.2003.10.004
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An experimental study of the in-plane compressive failure mechanism of foam cored sandwich specimens with an implanted through-width face/core debond is presented. Tests were conducted on sandwich specimens with glass/vinylester and carbon/epoxy face sheets over various PVC foam cores. Observation of the response of the specimens during testing showed that failure occurred by buckling of the debonded face sheet, followed by rapid debond growth towards the ends of the specimen. The compression strength of the sandwich specimens containing a debond decreased quite substantially with increasing debond size. A high-density core resulted in less strength decrease at any given debond size. Examination of the failure surfaces after separation of the face sheet and core revealed traces of core material deposited on the face sheet evidencing cohesive core failure. The amount of core material adhered to the face sheet decreased with increasing foam density indicating increasing tendency for core/resin interfacial failure. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码：583 / 590
页数：8
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