Eddy Current Testing Probe Composed of Double Uneven Step Distributing Planar Coils for Crack Detection
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概要
- 論文の詳細を見る
A novel eddy current testing probe composed of double uneven step distributing planar coils is researched to be used in crack detection. Because of the novel coil structure, the probe can not only detect the crack existence but also the crack position directly and quickly in measurable range of test metallic surface in non-scanning detection mode. This static crack detection can reduce measurement work and advance test efficiency greatly compared with traditional dynamic crack detection by scanning. The eddy current sensor using this probe can realize the line detection for defects which is improved from the traditional point detection. Experimental results show that in crack detection the difference inductance of double probe coils is approximately linear with crack position in measurable range. Through curve fitting of the dependence of difference inductance on crack position based on the least squares principle, finally a formula of crack position estimation is deduced, and its estimation error is studied.
- 社団法人 電気学会の論文
- 2008-01-01
著者
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SHIDA Katsunori
Department of Advanced System Control Engineering, Graduate School of Saga University
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Xu Peng
Department Of Chemistry University Of Science And Technology Of China
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Xu Peng
Department Of Electrical And Electronic Engineering Faculty Of Science And Engineering Saga Universi
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Shida Katsunori
Department Of Electrical And Electronic Engineering Faculty Of Science And Engineering Saga Universi
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Shida Katsunori
Department Of Advanced System Control Engineering Graduate School Of Saga University
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