線形不均質層系に対する等価均質層モデル

概要

論文の詳細を見る
The backscatter of elastic waves from an inhomogeneous layer inserted between two homogeneous half spaces, was investigated by introducing the equivalent homogeneous layer model. It was observed that discontinuation of the acoustic impedance at the layer interfaces mainly affects the backscatter intensity. The continuous variation of impedance inside the inserted layer has little affect especially in the high-frequency domain. Consequently, the layer system can be approximated by a suitable homogeneous layer system. Development of a new equivalent homogeneous layer model is the main subject of this paper. The model introduced will simplify the evaluation of backscatter intensity of a gradient inhomogeneous material. The simple modeling method is discussed and the model is evaluated and compared with the results for impulsive reflecting energy calculated by the model and by the exact analysis.
一般社団法人日本機械学会の論文
1997-10-25