31 RUS 法による異方性材料の弾性定数同定

概要

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Resonant ultrasound spectroscopy (RUS) is widely used to evaluate the characteristics of small solid specimens like superconductor of a single crystal or anisotropic materials of fiber reinforced composites, for example. The elastic moduli of the solid body can be determined by measurement of the natural frequencies exited by a pair of Piezoelectronic transducer. In this paper, a numerical technique for the determination of the elastic constants in RUS testing is discussed. An alternative evaluation function for the search algorithm of the elastic moduli is suggested, and boundary element analysis is applied to calculate the eigen value of the 3 dimensional vibration on the solid body. The identified elastic moduli derived by present formulation are comparable to those obtained from other more conventional technique, and some numerical simulations for the steel block are conducted to demonstrate the effectiveness of the present method.
一般社団法人日本機械学会の論文
2002-08-06