Resonance eddy detection method for surface crack

A detection method and technology for surface cracks, applied in the direction of material magnetic variables, etc., can solve problems such as difficult surface crack detection, and achieve the effect of simple processing and easy design of portable detection instruments.
CN1924568AInactive Publication Date: 2007-03-07TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2007-03-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

This invention relates to crack resonance whorl testing method, which belongs to iron magnetic material lossless electro-magnetic testing field. This invention uses resonance circuit to generate pulse resonance signals to excite sensor ring to get whorl field to judge the crack existence through test ring. The advantage lies in improving extracting highness and overcomes the rough surface impact to realize spot test to fulfill traditional testing rough crack.
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Claims

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