esearch on damage identification of fiber composite plate based on #br#
PZT-SLDV test system
Qi Baoxin1,2 Li Jianuo1 Qian Hui3 Jia Jiake1 Hu Jing1
1. Shenyang Jianzhu University, Shenyang 110168, China； 2. State Key Laboratory of Coastal and Offshore Engineering, Dalian
University of Technology, Dalian 116024, China; 3. Zhengzhou University, Zhengzhou 450001, China
Abstract： The PZT-SLDV modal test system was used to study the damage identification of fiber composite plate. The case study of fiber composite plate with dent damage by four fixed. The fiber composite plate was excited by sticking PZT on the surface, using SLDV measured the displacement modes of the fiber composite plate. The central difference method is used calculate the curvature mode to identify the damage of the fiber composite plate. Finally, using ABAQUS finite element analysis software, the finite element model of the fiber composite plate with damage was established, and the modal analysis of the finite element model carried out. The results show that the PZT-SLDV test system can effectively identify the dent damage of fiber composite plate. Since the number of wave crests of higher-order mode is higher than that of low-order mode, the effect of damage identification using higher-order mode is more obvious. The experimental results agree well with the numerical simulation on the fixed boundary conditions, which verifies the correctness of the finite element model.
