Quantitative Evaluation of Fatigue Crack Size Using Eddy Current Pulsed Thermography

Quantitative Evaluation of Fatigue Crack Size Using Eddy Current Pulsed Thermography

A set of metallic specimens containing fatigue cracks with different sizes were tested using eddy current pulsed thermography（ECPT）,therefore the relations between heating response of the crack area and the crack length was studied.The numerical and experimental results both showed that the increase...

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Veröffentlicht in:南京航空航天大学学报（英文版） 2017-06, Vol.34 (3), p.247-254
1. Verfasser: Feng Fuzhou Xu Chao Zhu Junzhen Min Qingxu Sun Jiwei
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description A set of metallic specimens containing fatigue cracks with different sizes were tested using eddy current pulsed thermography（ECPT）,therefore the relations between heating response of the crack area and the crack length was studied.The numerical and experimental results both showed that the increase of the crack length enhanced the crack heating response under specific test conditions.A particular form of calculated response signal,which is linearly related to the crack length,was introduced to provide a quantitative evaluation of crack length.
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