Study on acoustic emission source localization of 16Mn structural steel of high temperature deformation

2017 3rd International Conference on Applied Materials and Manufacturing Technology

Zhang, Yubo^1,2 ; Deng, Muhan^1 ; Yang, Rui^1 ; Jin, Feixiang^2

China Waterborne Transport Research Institute, Beijing

100088, China^1

School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing

100191, China^2

关键词: Acoustic emission sources;    Distribution characteristics;    High temperature deformation;    High-temperature environment;    Location method;    Location techniques;    Structural steels;    Tensile specimens;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/242/1/012041/pdf
DOI  :  10.1088/1757-899X/242/1/012041

来源: IOP

【 摘 要 】

The location technique of acoustic emission (AE) source for deformation damage of 16Mn steel in high temperature environment is studied by using linear time-difference-of-arrival (TDOA) location method. The distribution characteristics of strain induced acoustic emission source signals at 20°C and 400°C of tensile specimens were investigated. It is found that the near fault has the location signal of the cluster, which can judge the stress concentration and cause the fracture.