Optical measurement on dynamic buckling behavior of stiffened composite panels under in-plane shear

被引：14
|
作者：
Lei, Zhenkun [1 ,2 ]
Bai, Ruixiang [1 ]
Tao, Wang [2 ]
Wei, Xiao [1 ]
Leng, Ruijiao [1 ]
机构：
[1] Dalian Univ Technol, State Key Lab Struct Anal Ind Equipment, Dalian 116024, Peoples R China
[2] Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Peoples R China
来源：
OPTICS AND LASERS IN ENGINEERING | 2016年 / 87卷
基金：
中国国家自然科学基金;
关键词：
Fringe projection profilometry; Buckling; Stiffened composite panel; In-plane shear; SPECKLE PATTERN INTERFEROMETRY; FRINGE PROJECTION PROFILOMETRY; POSTBUCKLING BEHAVIOR; NUMERICAL-ANALYSIS; DAMAGE;
D O I：
10.1016/j.optlaseng.2016.04.017
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The budding behavior and failure mode of a composite panel stiffened by I-shaped stringers under in plane shear is studied using digital fringe projection profilometry. The basic principles of the dynamic phase-shifting technique, multi-frequency phase-unwrapping technique and inverse-phase technique for nonlinear error compensation are introduced. Multi-frequency fringe projection profilometry was used to monitor and measure the change in the morphology of a discontinuous surface of the stiffened composite panel during in-plane shearing. Meanwhile, the strain history of multiple points on the skin was obtained using strain rosettes. The buckling mode and deflection of the panel at different moments were analyzed and compared with those obtained using the finite element method. The experimental results validated the FEM analysis. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：111 / 119
页数：9
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