渦電流磁気指紋による様々なパーライト率を有する低炭素鋼の残留ひずみ評価
Evaluation of residual strain of low carbon steels with various pearlite contents by eddy current magnetic signature method
著者:
喜多 青葉 内一 哲哉 高木 敏行 武田 翔 松本 貴則 （東北大） 熊野 秀樹 大薗 伸司 （中部電力)
発刊日:
公開日:
carbon steeleddy current magnetic signaturepearlite ratioresidual straintensile test
概要
In the previous study, we proposed an eddy current magnetic signature method as a way to evaluate the residual strain of low carbon steels. However, the dependence of the pearlite content which affects magnetic properties of steel on the eddy current magnetic signature has not been discussed yet. In this study, to evaluate the effect of the pearlite content on the eddy current magnetic signature, two kinds of low carbon steels with different pearlite contents are investigated. The specimens with different residual strain values are prepared by the tensile test, and eddy current magnetic signature is measured on each specimen. As a result, it is found that the behaviors of eddy current magnetic signatures of two kinds of steel are similar independently from the view point of the pearlite content. In contrast, the magnitudes of the eddy current magnetic signature change with the pearlite content.
