Effect of Crack Opening on Distribution of Magnetic Flux Density around Fatigue Cracks

摘要：

　　In order to identify the mechanisms of changes in the magnetic flux density distribution around fatigue cracks that occur during crack propagation, JIS SCM440 specimens were fatigue tested, and the relation between crack morphology and magnetic flux density distribution was investigated.Two features were observed: a high intensity area around the crack tip, and a low intensity area around the crack root.The low intensity area grew larger for wide open cracks and disappeared when the crack was closed by external force.It was hence found that the magnetic flux density distribution is strongly affected by the crack opening.

关键词： NDT Fatigue Crack Crack propagation Magnetic flux density MI sensor

作者: Hirotaka Tanabe Yui Izumi Tohru Takamatsu Jun Shimada Katsuyuki Kida Edson Costa Santos

作者单位: Dept.of Mechanical Systems Engineering,School of Engineering,The University of Shiga Prefecture,Hass Dept.of Mechanical and Intellectual Systems Engineering,Faculty of Engineering,University of Toyama, Dept.of Mechanical Engineering,Kyushu University,744 Motooka,Nishi-ku,Fukuoka 819-0395,JAPAN

会议类型: 国际会议

会议名称: the 2013 2nd International Conference on Metallurgy Technology and Materials(ICMTM2013)(第二届冶金技术与材料国际会议)

会议地点: 香港

会议语种:英文

页码: 20-23

在线出版日期: 2013-06-25（万方平台首次上网日期，不代表论文的发表时间）