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Communication Dans Un Congrès Année : 2019

Effect of bending stress on the magnetic properties of electrical steel using needle probe method

Résumé

The changes in magnetic hysteresis of electrical steel due to the effect of surface stress-induced magnetic flux leakage around bends is investigated. This paper deals with the bending angle impact on magnetic properties of electrical steels subjected to bending stress. Test samples are five equal strips extracted from a single wrought iron sheet, four of which subjected to bending stresses to create 130°, 150°, 160° and 170° bending angles respectively, and a reference strip at 180°. Hysteresis patterns of the test samples were compared for response to bending angles. Also, a graphical relation between magnetic flux leakage and bending angles at the top and bottom bending tips is deduced from the earlier pattern. Measurements of magnetic properties was carried out using the needle probe method. Bending stress results in significant magnetic flux leakage observed at the bottom bending tip of each sample due to uniform distribution of magnetic flux around tips. This effect was observed to increase with bending stress and angle.
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Dates et versions

hal-02154714 , version 1 (12-06-2019)

Identifiants

  • HAL Id : hal-02154714 , version 1

Citer

Y a Tene Deffo, P Tsafack, Benjamin Ducharne, Minh-Quyen Le, Pierre-Jean Cottinet. Effect of bending stress on the magnetic properties of electrical steel using needle probe method. COMPUMAG 2019, Jul 2019, PARIS, France. ⟨hal-02154714⟩
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