三連コイルによるSUS304の材質劣化の検出(オーガナイズドセッション,材料と組織)

概要

論文の詳細を見る
Although the austenitic stainless steel used for the structure material of a nuclear reactor etc. is originally a non-magnetic body, it metamorphoses into the martensitic phase which is a ferromagnetic substance by plastic deformation. So, for evaluating this material in nondestructive inspection, ECT which uses electro- magnetic characteristics is promising. In this study, three coils were placed on the same axle in triple manner, and the central coil was arranged so that an excitation coil and two outside coils may be used as a detection coil and an output may offset each other. Unless electric conductive material was brought close, the number of turns was adjusted so that an output might not arise in a detection coil. Thereby we thought that high sensitivity measurement could be performed. In this study, the practicality of a high sensitive non-destructive evaluation method by using tandem coils was examined.
一般社団法人日本機械学会の論文
2004-09-23