The Development of Double-sided Eddy-current Flaw Detector

摘要

This paper deals with a new type of eddy-current flaw detector that utilizes two sets of detecting coils to detect the tangential magnetic-field of flaw. This kind of detector cooperating with handling circuit can efficiently detect flaw. Specially, the distance and angle between detector and flaw have no effect on detecting result. this device can be applied to the quantitative and automatic measurement of defects on the surface of metallurgical and mechanical products, without destroying the products.