OS1113 薄膜材料への押込みにおける硬さのオーバーシュート・アンダーシュート現象(実験力学における最近の進歩,オーガナイズドセッション)

概要

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The composite hardness, the hardness obtained from indentation tests on film/substrate system, is evaluated from elastic-plastic analysis with a FEM program, on the combinations of the film and substrate materials that show relatively closer hardness values. From the computational results, we can conclude that the composite hardness in the film/substrate indentation cannot always be expressed by a monotonic function that changes from the film hardness to the substrate hardness. If we choose two materials with similar hardness but different plastic properties, we can expect a strange behavior, either an overshoot or undershoot of the composite hardness.
一般社団法人日本機械学会の論文
2009-07-24