Stress fatigue crack propagation analysis of crane structure based on acoustic emission

被引：14

作者：

Xu, Bin ^{[1
]}

Wu, Qi ^{[2
]}

机构：

[1] Shanghai Inst Technol, Sch Mech Engn, Shanghai, Peoples R China

[2] Shanghai Jiao Tong Univ, Shanghai, Peoples R China

来源：

ENGINEERING FAILURE ANALYSIS | 2020年 / 109卷

基金：

中国国家自然科学基金;

关键词：

Gantry crane; Crack propagation; Fatigue life; Acoustic emission; Response surface; STEEL; INITIATION; CORROSION; GROWTH; WHEEL;

D O I：

10.1016/j.engfailanal.2019.104206

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Gantry crane is a widely used equipment in logistics fields. Stress fatigue crack propagation is an important fatigue mode of gantry crane in services. Based on theoretical analysis and acoustic emission (AE) test, A new crack propagation analysis method was proposed in this investigation. A two-parameter basis function was adopted to analyze crack propagation of steel Q235B, and the response surface was modeled to predict the fatigue life of steel specimen, moreover AE technique was advanced to detect the crack propagation, where layout of AE sensors was optimized to achieve a precise result. Consequently the proposed method was applied in practical box-girder crack propagation analysis. By comparison with theoretical analysis, it indicated that this method was precise and could be applied in practical engineering.

引用

页数：8