Sizing of 3-d surface cracks with varying width by using leakage magnetic field and Hall element probe

被引：0

作者：

Minkov, D ^{[1
]}

Shoji, T ^{[1
]}

机构：

[1] Tohoku Univ, Fracture Res Inst, Aoba Ku, Sendai, Miyagi 9808579, Japan

来源：

NONDESTRUCTIVE CHARACTERIZATION OF MATERIALS IX | 1999年 / 497卷

关键词：

D O I：

暂无

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A method is developed for computing the sizes of surface cracks in magnetic materials. The method is applicable to a crack with varying width along the crack depth, and is based on measuring leakage magnetic field by Hall element probe. New analytical expressions are derived for the z-component of the intensity of the leakage magnetic field of a surface crack with linearly varying width. Computations are performed for sizing of several such cracks with complex cross-sections, and unknown shapes. The computed results show that reasonably precise sizing can be achieved for all of the investigated cracks.

引用

页码：220 / 227

页数：8