An experimental study of damage accumulation in balanced CFRP laminates due to repeated impact

被引：105
|
作者：
David-West, O. S. [1 ]
Nash, D. H. [1 ]
Banks, W. M. [1 ]
机构：
[1] Univ Strathclyde, Dept Mech Engn, Glasgow G1 1XJ, Lanark, Scotland
来源：
COMPOSITE STRUCTURES | 2008年 / 83卷 / 03期
关键词：
stiffness; damage progression; laminates; transient response; contact time; impact resistance;
D O I：
10.1016/j.compstruct.2007.04.015
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
The behaviour of balanced laminates (symmetric, antisymmetric and asymmetric) under repeated low energy hits of a 12.1 mm hemispheric impactor was evaluated. The resistance to the impulsive force was found to be influenced by the stacking sequence and the crack path through the laminate. The symmetric plate with different ply directions proved to have best resistance to impact. The rate of damage progression in the event was characterised by an equation from the energy profile that correlates the propagation energy and time. This was differentiated to give the rate of damage evolution. A comparison of the bending stiffness obtained from the force-displacement plot of the first impact, revealed that the symmetric composite had the highest stiffness. Noted at perforation were fibre breakage and matrix cracking. (C) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：247 / 258
页数：12
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