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

Da Bo Wu; Min Qiang Xu; Hai Yan Xing

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

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 34-35Detection of Crack Growth Rate in 45 Steel by...

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

Abstract:

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.

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Periodical:

Applied Mechanics and Materials (Volumes 34-35)

Pages:

855-858

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.34-35.855

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Online since:

October 2010

Authors:

Da Bo Wu, Min Qiang Xu, Hai Yan Xing

Keywords:

Crack Growth Rate, Fatigue Test, Metal Magnetic Memory (MMM), Three-Point Bending

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