Waveform evaluation of AE signal caused by fatigue crack growth using the Acoustic Emission

摘要：

Acoustic emission (AE) technique is a well-known non-destructive evaluation technique. Fatigue crack growth test was performed using SM53C to check up the AE signal occurred by crack growth, so AE system was used to detect the crack signal. Features calculated by the AE signals were analyzed to evaluate the steps divided the crack growth into three. The steps, initiation, growth and breaking, were separated by velocity of the crack growth. Time waveforms and power spectrum were created by the AE signal of each one of the steps and compared. In the feature tendency, it was found out that the values were suddenly changed as the velocity of the crack growth increasing.

作者: Jae-Gu Kim Dong-Sik Gu Hyo-Jung Kim Byeong-Keun Choi

作者单位: Department of Precision Mechanical Engineering, Gyeongsang National University, Tongyeong 650-160 So Department of Energy and Mechanical Engineering, Institute of Marine Industry, Gyeongsang National U

会议类型: 国际会议

会议名称: The 6th International Conference on Physical and Numerical Simulation of Materials Processing(第六届材料与热加工物理模拟及数值模拟国际学术会议 ICPNS 2010)

会议地点: 桂林

会议语种:英文

页码: 1-15

在线出版日期: 2010-11-16（万方平台首次上网日期，不代表论文的发表时间）