電磁鋼板のヒステリシス損失と磁気ひずみに及ぼす圧縮力の効果

概要

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The changes of magnetic hysteresis loss and effective magnetostriction in non-oriented electrical steel sheets due to compressive stress were investigated. Both the hysteresis loss and the magnetostriction increased due to application of compressive stress. The hysteresis loss increased in proportion to mechanical work that was done by the magnetostriction under a constant compressive stress. When the applied stress σ was less than 5 MPa, the proportional ratio was almost 2. 0 for all samples. When σ ≥5 MPa, on the other hand, the ratio was reduced and depended on the samples and its maximum flux density. It is considered that the mechanical work of magnetostriction changed partly into the hysteresis loss through 90° wall creation or disappearance in the magnetization process.
社団法人日本磁気学会の論文
2000-04-15