Detection of Crack Growth Rate in 45 Steel by Metal Magnetic Memory

Abstract:

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It is important that monitoring the fatigue crack propagation in engineering. This paper studied crack growth rate with the metal magnetic memory technique. Three-point bending fatigue tests of center-cracked specimens were carried out and the normal component of magnetic field signals Hp(y) on the surface of specimens were measure by TSC-1M-4. The correlation of crack growth rate da/dN and metal magnetic memory normal signal Hp(y) was studied. The specimens, with different heat treatment, quenching and thermal refining, were tested in fatigue-testing Machine to study the influence of heat treatment on the metal magnetic memory signal Hp(y). The curve of da/dN ~ Hp(y) was built.

Info:

Periodical:

Edited by:

Shengyi Li, Yingchun Liu, Rongbo Zhu, Hongguang Li, Wensi Ding

Pages:

855-858

DOI:

10.4028/www.scientific.net/AMM.34-35.855

Citation:

D. B. Wu et al., "Detection of Crack Growth Rate in 45 Steel by Metal Magnetic Memory", Applied Mechanics and Materials, Vols. 34-35, pp. 855-858, 2010

Online since:

October 2010

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$35.00

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