Open Crack Depth Evaluation Using Eddy Current Methods and GMR Detection

被引:0
|
作者
Pasadas, D. J. [1 ]
Lopes Ribeiro, A. [1 ]
Rocha, T. J. [1 ]
Ramos, Helena Geirinhas [1 ]
机构
[1] Univ Lisbon, Inst Super Tecn, Inst Telecomunicacoes, P-1699 Lisbon, Portugal
关键词
eddy current; non-destructive evaluation; inverse problem; fatigue cracks; INSPECTION; THERMOGRAPHY; DEFECTS; SIGNALS;
D O I
暂无
中图分类号
V [航空、航天];
学科分类号
08 ; 0825 ;
摘要
In this paper the eddy current nondestructive method is used to determine the depth of linear cracks that were machined on aluminum plates. To improve this method a constant field probe was used to produce linear eddy currents launched across the crack. The tangential to plate magnetic field components perpendicular and parallel to the applied field were measured by a giant magneto-resistor sensor at different frequencies to devise one method for crack's depth measurement.
引用
收藏
页码:117 / 121
页数:5
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