APPLICATION OF GEOMETRIC MOIRE TO THE ANALYSIS OF LARGE DEFORMATION IN THREE-DIMENSIONAL MODELS

摘要

The application of geometric moire in large deformation of 3-D models is discussed. Different aspects of the method, such as mismatch technique and mechanical differentiation, are taken into consideration for the measurement. An application of the method is given to the cushion disk of an artificial knee joint in whose axis-symmetric cross section a cross specimen grating of 0.5mm pitch was replicated. The analysis shows the applicability of the geometric moire, together with its various approaches, in the large deformation measurement giving the whole field quantitative definition.