Mode I crack growth rate of a ferromagnetic elastic strip in a uniform magnetic field

被引：5

作者：

Shindo, Yasuhide ^{[1
]}

Narita, Fumio ^{[1
]}

Horiguchi, Katsumi ^{[1
]}

Komatsu, Tetsu ^{[1
]}

机构：

[1] Tohoku Univ, Grad Sch Engn, Dept Mat Proc, Sendai, Miyagi 9808579, Japan

来源：

ACTA MATERIALIA | 2006年 / 54卷 / 19期

关键词：

theory and modeling; fatigue test; soft ferromagnetic materials; fracture; magneto-elastic interactions;

D O I：

10.1016/j.actamat.2006.06.048

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The theory of ferromagnetii, elastic materials of multidomain structure is applied to develop a crack growth rate equation of a finite crack in a soft ferromagnetic material under mode I tensile loading and uniform magnetic field. The plane strain and plane stress problems are considered Dugdale's assumption regarding the plastic zone in metals is applied to estimate the effect of yield around the crack tip. The accimulated plastic displacement criterion is used for developing a solution for the crack growth rate. Numerical values of crack growth rate are obtained for a soft ferromagnetic strip with a single-edge crack and the results are displayed graphically. Crack growth rate tests are also conducted on nickel-iron soft magnetic materials with a single-edge cracked plate specimen geometry in the bore of a superconducting magnet, and a comparison is made between numerical results and experimental data. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：5115 / 5122

页数：8

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