Impact and post impact behavior of composite sandwich panels

被引：121

作者：

Schubel, Patrick M. ^{[1
]}

Luo, Jyi-Jiin ^{[1
]}

Daniel, Isaac M. ^{[1
]}

机构：

[1] Northwestern Univ, Robert R McCormick Sch Engn & Appl Sci, Evanston, IL 60208 USA

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2007年 / 38卷 / 03期

关键词：

carbon fiber composite; damage tolerance; impact behaviour; post impact behavior; mechanical testing; COMPRESSION; STRENGTH; FAILURE; DAMAGE;

D O I：

10.1016/j.compositesa.2006.06.022

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Assessing the residual mechanical properties of a sandwich structure is an important part of any impact study and determines how the structure can withstand post impact loading. The damage tolerance of a composite sandwich structure composed of woven carbon/epoxy facesheets and a PVC foam core was investigated. Sandwich panels were impacted with a falling mass from increasing heights until damage was induced. Impact damage consisted of delamination and permanent indentation in the impacted facesheets. The Compression After Impact (CAI) strength of sandwich columns sectioned from these panels was then compared with the strength of an undamaged column. Although not visually apparent, the facesheet delamination damage was found to be quite detrimental to the load bearing capacity of the sandwich panel, underscoring the need for reliable damage detection techniques for composite sandwich structures. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：1051 / 1057

页数：7

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