Determination of Metallic Fatigue in Nitrided Steel using a MDK Magnetic Nondestructive Tester
In many cases of the structural fracture, it is supposed that metallic fatigue is one of the important reasons. Many researchers have revealed the fatigue process on the surface of metals. But, in surface hardened steel, internal cracks develop slowly larger before the fracture. So it is needed to detect small inner defects in the machine parts or the working structures, non-destructively. In this paper, a new magnetic sensor (MDK sensor) was used to determine the fatigue process of the nitrided steel (in a surface hardened cylindrical specimen). As experimental results, the small fatigue damage is found out in the midst stage of the fatigue life. This new sensor was supposed to be available to determine the inner defect of metals, as one of NDT methods.
Metallic fatigue Nondestructive test Magnetic detector MDK sensor Gas nitriding Rotating bending fatigue.
Akiyoshi ONUKI Hiroaki KOHAMA
Yamagata University (Formerly) 1-3-73 Josei, Yonezawa-shi, YAMAGATA 992-0054, JAPAN Kaisei Engineer Co. LTD, Sone Bldg, 1-3-2 Nishi-tsuruma,Yamato-shi, KANAGAWA 242-0005, JAPAN
国际会议
第十七届世界无损检测会议(17th World Conference on Nondestructive Testing)
上海
英文
2015-2022
2008-10-25（万方平台首次上网日期，不代表论文的发表时间）