圧縮変形に伴う組織音響異方性の変化 : ひずみ速度と温度の影響(<小特集>X線材料強度小特集)

概要

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The acoustoelasticity method which makes use of the birefringent effect of polarized shear wave is a promising technique not only for stress analysis but also for measuring texture-induced acoustic anisotropy in metallic materials. In this study the texture-induced acoustic anisotropy originated by plastic deformation under compression was measured by the acoustoelasticity method in order to investigate the effects of strain-rate and temperature during the tests. Alminum and copper polycrystalline materials were used as specimens and static compression tests under room temperature to -170℃ and dynamic compression tests using a split Hopkinson pressure bar were done. After the compression tests, the texture-induced acoustic anisotropy was measured by a sing-around method. The variation in texture-induced acoustic anisotropy appeared to be evidently influenced by both strain-rate and temperature for the case of copper, but it did not appear definitely for aluminum.
社団法人日本材料学会の論文
1982-03-15