電気ポテンシャル分布データベースを用いた表面き裂の測定

概要

論文の詳細を見る
The present authors proposed the electric potential computed tomography (CT) method for estimating location, shape and size of two- and three-dimensional cracks in conductive bodies from electric potential distribution, based on boundary-element inversion analysis schemes. In the present study, a simplified inverse analysis scheme is proposed to identify surface cracks on back faces by processing the electric potential distribution using a workstation. In this scheme, a hierarchical method is introduced, in which two-dimensional scanning analysis is combined with three-dimensional inverse analysis. To achieve a high-speed computation on the workstation, an analytical expression of electric potential distribution reported by Johnson is used in the two-dimensional scanning analysis, and a data base of electric potential distribution on a three-dimensional cracked body is utilized in the three-dimensional inverse analysis. Numerical simulations and experiments have shown that the proposed scheme is useful for identifying the surface cracks.
一般社団法人日本機械学会の論文
1991-09-25