Whitham Curtis Christofferson & Cook, PC
Sensor for detecting surface defects of metal tube using eddy current method
A sensor for detecting surface defects of a metal tube solves a problem of a conventional eddy current probe in that it is difficult to detect a crack in the circumferential direction of a metal tube. The sensor includes a plurality of coils wound at a predetermined inclined angle. The plurality of coils is inserted into the inside of a metal tube. Alternating current is applied to the coils to measure a change in impedance of the coils due to a change in an eddy current generated in the metal tube, thus detecting a surface defect of the metal tube.
Korea Research Institute of Standards and Science
G G
G01N G01N
inventional additional
Dong Jin Young Gil Bong Young Seung Seok Young Joo
Yoon Kim Ahn Lee Kim