Local stiffness reduction in impacted composite plates from full-field measurements

被引：21
|
作者：
Kim, J. -H. [1 ]
Pierron, F. [1 ]
Wisnom, M. R. [2 ]
Avril, S. [3 ]
机构：
[1] Ecole Natl Super Arts & Metiers, Lab Mecan & Proc Fabricat, F-51006 Chalons Sur Marne, France
[2] Univ Bristol, Adv Composites Ctr Innovat & Sci, Bristol BS8 1TR, Avon, England
[3] Ecole Natl Super Mines, Ctr Hlth Engn, F-42023 St Etienne, France
来源：
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2009年 / 40卷 / 12期
关键词：
Optical properties/techniques; Delamination; Damage mechanics; Non-destructive testing; SPECIAL VIRTUAL FIELDS; MATERIAL PARAMETERS; FIBER COMPOSITES; INVERSE METHOD; DAMAGE; IDENTIFICATION; DELAMINATIONS; MECHANISMS;
D O I：
10.1016/j.compositesa.2009.09.024
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The virtual fields method (VFM) is used as an inverse procedure to process curvatures obtained from full-field measurements for the identification of the local loss of stiffness in composite plates. The VFM has been adapted to the case of a plate with stiffnesses varying spatially. Two parameterization methods for the stiffness reduction were developed: continuous (polynomial) and discrete (piecewise). In this study, the procedure is described, validated on simulated data and several experimental results are given. The method not only picks up the location of the damage but also provides a fairly good estimate of the stiffness reduction in the damaged area when the through-thickness displacement distribution in the damaged region is reasonably linear. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1961 / 1974
页数：14
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