モアレ縞法による軟鋼のリューダース帯先端近傍のひずみ分布測定　　薄肉円筒のねじりによる横断面せん断降伏の場合

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  • Moire fringe method for measuring strain profile near the Lueders band front. Case of cross-sectional shear yielding in a twisted thin wall tube.
  • モアレ シマホウ ニ ヨル ナンコウ ノ リューダースタイ センタン キンボウ

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The Moire fringe technique is presented as a method of measuring inhomogeneous distribution of small strain. The method was applied to the measurement of the plastic strain profile near the running Luders band front in twisted thin wall bars of mild steel. A fine Moire grid pattern was photo-printed on the curved surface of the bar. The material constants of the yield initiation condition in shear were obtained from the measured strain profiles.

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