Analysis of interaction of multiple cracks in a direct current field and nondestructive evaluation

被引:10
|
作者
Liu, H
Saka, M
Abé, H
Komura, I
Sakamoto, H
机构
[1] Tohoku Univ, Dept Mech Engn, Aoba Ku, Sendai, Miyagi 9808579, Japan
[2] Tohoku Univ, Aoba Ku, Sendai, Miyagi 9808577, Japan
[3] Toshiba Corp, Heavy Apparatus Engn Lab, Tsurumi Ku, Yokohama, Kanagawa 2300045, Japan
[4] Toshiba Corp, Isogo Nucl Engn Ctr, Isogo Ku, Yokohama, Kanagawa 2350032, Japan
关键词
D O I
10.1115/1.2791071
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
A method of analysis is proposed for nondestructive evaluation of multiple cracks by means of the d.c. (direct current) potential drop technique. Two and three-dimensional multiple cracks are treated. A methodology for considering interaction of cracks based on the equation for an isolated crack is given to calculate the potential drop between both sides of a crack in multiple cracking in a plate. The inverse problem to evaluate the crack depth is analyzed by comparing the potential drop calculated in this way with the measurement. It is shown that the evaluated crack depth is in good agreement with the actual one.
引用
收藏
页码:468 / 475
页数:8
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