Fatigue Damage Evaluation on Ferromagnetic Materials Using Magnetic Memory Method
Measuring magnetic parameters nondestructively is important for understanding fatigue phenomena of ferromagnetic materials. In this study, metal magnetic memory method is used as a new diagnostic tool to evaluate fatigue process. Both normal and tangential components of residual magnetic field have been studied on medium carbon steel specimens subjected to rotary bending fatigue. The results indicate that the normal component is related to different stress states while the variation trend of the tangential component with number of cycles shows a good agreement with the fatigue stages. This approach seems to be able to predicate fatigue lifetime.
fatigue damage ferromagnetic materials metal magnetic memory residual magnetic field normal component tangential component
Jiancheng Leng Minqiang Xu Shuai Zhao Jiazhong Zhang
School of Astronautics,Harbin Institute of Technology,Harbin 150001,P.R.China;College of Mechanical School of Astronautics,Harbin Institute of Technology,Harbin 150001,P.R.China
国际会议
长沙
英文
1728-1730
2009-04-11（万方平台首次上网日期，不代表论文的发表时间）