文献类型：期刊文献

英文题名：Simulation research on defect detection of plate weld based on sensitivity analysis

作者：Lin, Lizong[1]; Chang, Haoyuan[1]; Zhang, Xin[1]

机构：[1] School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2019

卷号：267

期号：4

外文期刊名：IOP Conference Series: Earth and Environmental Science

收录：EI(收录号：20192607103216)

语种：英文

外文关键词：ABAQUS - Elastic moduli - Bridge decks - Nondestructive examination - Sensitivity analysis - Vibration analysis - Welds

摘要：In order to improve the efficiency of traditional local non-destructive testing method in detecting the defects of large plate welds and obtain the equivalent mechanical parameters of weld defects, a method for detecting plate weld defects based on local vibration area sensitivity analysis is proposed. This method does not need to pay attention to the specific form of the weld defect, and it regards the defect as a reduction in the local Young's modulus. A plate welding model was established in ABAQUS finite element software to simulate the detection process of different defect positions and different defect levels. The results show that the sensitivity matrix constructed with the elastic modulus of 5% change can be applied to the detection of defects with a degree of 3% to 20%. It shows that the proposed method can be used to locate and quantify weld defects with sufficient accuracy. ? Published under licence by IOP Publishing Ltd.