Fatigue Damage Characterization of Magnesium Thick Plate using Nonlinear Rayleigh Wave
In order to extend engineering application of nonlinear ultrasonic nondestructive testing technique in wave structure, an experimental technique for excitation and reception directly of Rayleigh wave by fixing piezoelectric sensor on the edge of the specimen is presented. Using the experimental system and procedure, the surface fatigue damage of AZ31 magnesium thick plate is detected by nonlinear Rayleigh waves. Although the experimental results have some dispersion, the ultrasonic nonlinearity parameters overall increase apparently with the fatigue cycles increasing, which demonstrates the Rayleigh wave nonlinearity parameters are sensitive for the changes of microscopic defects in the materials internal, and the experimental system and procedure are reliable. The Rayleigh wave nonlinearity parameters for the thick plate structure fatigue life prediction have potential engineering applications.
Nonlinear Rayleigh wave Magnesium alloy Fatigue damage
SU Shan YAN Bingsheng
School of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo 454000, China School of Mechanical and Electrical Engineering, Henan University of Technology, Zhengzhou 450007 Ch
国际会议
合肥
英文
2006-2009
2011-09-23（万方平台首次上网日期，不代表论文的发表时间）