Evaluation of Strain Distribution of Steel Sheet Using High-Frequency Ultrasonic Wave

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  • 高周波超音波を用いた薄鋼板のひずみ分布評価
  • コウシュウハ チョウオンパ オ モチイタ ウスコウハン ノ ヒズミ ブンプ ヒョウカ

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Abstract

<p>We studied a method of evaluating the strain distribution of a steel sheet after forming, using high-frequency ultrasonic wave. We used JIS No.5 test pieces which applied arbitrary strain with 590 MPa class steel and 980 MPa class steel. The longitudinal wave sound velocity in the material was measured using high-frequency ultrasonic wave, visualization of the strain received by the material was found to be possible. It was found that there is a correlation between the amount of strain added to the material and the increase in sound velocity.</p>

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