Characteristics of Spontaneous Magnetic Field of Artificial Crack Induced by Complex Stress in Large Components. (2015)

• Record Type: Journal Article
• Authors: Guo, P.J.; Guan, W.H.; Yan, C.Z.; Qin, Z.C.; Chen, X.D.
• Is Part Of: Procedia engineering. Volume 130(2015)
• Page Start: 1642
• Page End: 1648
• Publication Date: 2015
• Subjects: Spontaneous magnetic field -- Magnetic flux leakage -- Crack propagation -- Fatigue damage -- Metal magnetic memory technique; Engineering -- Congresses; Engineering -- Periodicals; Engineering; Conference proceedings; Periodicals; 620.005
• DOI: 10.1016/j.proeng.2015.12.354
• Languages: English
• ISSNs: 1877-7058

Abstract

Abstract: In this study, the regularity of spontaneous magnetic field of artificial cracks in a seamless gas cylinder was investigated by metal magnetic memory technique during fatigue testing. The results showed that the regularity of magnetic signals had a strong relation with the degree of stress concentration around crack under complex stress. Moreover, the characteristic of normal component of spontaneous magnetic field H p (y) and maximum magnetic field gradient, K max, were investigated when measured perpendicular as well as parallel to the crack. It is more difficult to quantitative the crack by H p (y) signals using magnetic memory technique.