2001 顕微ラマン分光法を用いたアルミナの局所ひずみ測定(G03-1 測定・検出・評価技術(1),G03 材料力学)

概要

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It is very important to grasp the strain states in sub-micro scale area. In this study, components of strain in the single crystal sapphire and polycrystalline alumina were determined by the Raman microspectroscopy. First, the relationships of A_<1g> and E_g modes between the change of Raman shift and strain components were theoretically derived, based on Energy change under mechanical loading. It was clarified to have to determine 20 parameters in theses relationships in order to measure the components of strain. Next, four point bending tests of single crystal sapphire were conducted to determine these parameters experimentally. In A_<1g> and E_g modes, the relationships between Raman shift and applied strain indicated the linearity. Last, the stress measurement around the notch root in the single crystal sapphire was performed. The measured strains were good agreement with the FEM results. Therefore, the applicability of Raman microspectroscopy to measurements of strain in micro scale area was confirmed.
社団法人日本機械学会の論文
2007-09-07