A Study on the Relationship between Mechanical Property and Impedance Characteristics with respect to Tempering Temperature in Alloy Steels by Electromagnetic Method

자기유도법에 의한 합금강의 템퍼링 온도에 따른 기계적성질과 임피던스 특성과의 관계에 관한 연구

Microstructure and mechanical properties of most steels change by heat treat treatment. Such variation of stucture and properties of steel cause an impedance change on electromagnetic induction coil. The objective of this study is, by searching the relationship between the mechanical property or microstructural changes and impedance value of induction coil, to examine the applicablity of a monitoring the heat treated condition of products nondestructively.