超音波顕微鏡X-Zモード画像のフラクタル次元解析による表面近傍の塑性異方性評価

概要

論文の詳細を見る
With regard to micro evaluation of mechanical properties of solid materials near a surface by means of a scanning acoustic microscope (SAM), scanning an acoustic lens along one direction of a specimen and successively defocussing the lens to the depth direction of the specimen, we obtain X-Z mode image which contains plentiful information about the mechanical properties near the surface, for example : the surface shape of the specimen, distributions of surface wave velocity and so on. Then, it is shown in this paper that we are able to measure surface roughness of the specimen from X-Z mode image data and evaluate deformation induced anisotropy of materials by introducing the fractal dimensional analysis of the X-Z mode image. Therefore, we can expect that practical applications of a scanning acoustic microscope will be more widely expanded in the near future.
社団法人日本機械学会の論文
1999-01-25