RELIABILITY OF AUTOMATIC EDDY-CURRENT EQUIPMENT WITH A ROTATING MAGNETIC-FIELD

被引：10
|
作者：
GRIMBERG, R
SAVIN, A
MIHALACHE, O
REZLESCU, N
BRADU, E
CHIFAN, S
IFTIMI, V
ANDREESCU, A
机构：
[1] Institute of Technical Physics, Iassy, 6600
来源：
NDT & E INTERNATIONAL | 1995年 / 28卷 / 05期
关键词：
EDDY CURRENT TESTING; RELIABILITY; ROTATING MAGNETIC FIELD;
D O I：
10.1016/0963-8695(95)00013-N
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
This paper presents a method for estimating the reliability of eddy-current nondestructive inspection by using the rotating magnetic field method. The results of the inspection are considered as memory-less stochastic processes, with the possibility of representation in a bi-dimensional space: 'good product' and 'bad product'. The general formulae are calculated by using the master equation for the time behaviour of the probabilities, the numerical data used for results estimation being obtained by means of an automatic eddy current installation with rotating magnetic field. The samples used had 20 mu m, 40 mu m and 98 mu m deep artificial faults, and the control speed ranged between 0.05 and 1 ms(-1).
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页码：297 / 301
页数：5
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