超音波による塑性変形の検出について

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書誌事項

タイトル別名
  • On the Detection of Plastic Deformation by Ultrasonic Waves
  • チョウオンパ ニ ヨル ソセイ ヘンケイ ノ ケンシュツ ニ ツイテ

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抄録

Change of ultrasonic attenuation by magnetization in plastic deformed steel was measured at the frequency of 5 Mc/sec. The clear difference of attenuation was observed between the steel specimens deformed plastically and elastically near the yield point. By this experiment it was made clear that the method could be applied for a nondestructive inspection of yielding of steel. Plastic deformation caused by thermal strain was confirmed by this method at the centre of 70φ×280 mm specimen quenched in water at just below Ac1 transformation temperature. Also, six kinds of structural steels were examined by this method and it was shown that this method could be applied to steel which showed no clear yield point. From the measurement of the change of magnetostriction with magnetization, it was also recognized in plastic-deformed specimens that the change of attenuation with magnetization was similar to that of magnetostriction.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 23 (6), 325-329, 1959

    公益社団法人 日本金属学会

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