JOINT DEFECTS IDENTIFICATION FOR A PREFABRICATED STRUCTURE USING PIEZOELECTRIC IMPEDANCE ANALYSIS
The three-dimensional finite element ANSYS software is used to establish the piezoelectric impedance model for a prefabricated structure with joint defects.The widely used grouting sleeve is taken into account in the analysis.Meanwhile,six working conditions including the different paste position of the piezoelectric patches and the grouting direction etc.,are considered.From the finite element simulation, the piezoelectric impedance signals are obtained.Then, the joint defects can be identified qualitatively using a statistical method.It can be seen that piezoelectric impedance analysis can effectively identify defects in the structure nodes.Furthermore, using compressed sensing (CS), principal component analysis (PCA) and artificial neural networks (ANN) system, the joint defects are identified quantitatively.
Finite element method Grouting sleeve CS-PCA-ANN Joint defects identification
Chun-yang LI Wei YAN Tian-bi LV Jun-hua LI Hao-jie WANG
Faculty of Architectural, Civil Engineering and Environment, Ningbo University, Ningbo, P.R.China, 315211
国际会议
哈尔滨
英文
221-224
2019-01-11（万方平台首次上网日期，不代表论文的发表时间）