A magneto-optic imager for NDT applications

被引：29

作者：

Novotny, P ^{[1
]}

Sajdl, P ^{[1
]}

Machác, P ^{[1
]}

机构：

[1] Inst Chem Technol, CR-16628 Prague 6, Czech Republic

来源：

NDT & E INTERNATIONAL | 2004年 / 37卷 / 08期

关键词：

magneto-optics; examination; image processing; defects;

D O I：

10.1016/j.ndteint.2004.05.002

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The paper deals with magneto-optical methods utilized for the nondestructive testing (NDT) of materials and technical components. The described imaging device (based on a garnet film) is able to operate in two different modes. In the static mode it makes visible changes in the magnetic permeability of the tested materials (e.g. the presence of Fe-a phase in austenitic steels). In the alternating mode the sensor images changes of electrical resistivity (e.g. small holes in copper foils). Examples of the application of the methods are presented and the results are discussed. (C) 2004 Published by Elsevier Ltd.

引用

页码：645 / 649

页数：5