2D PHASE SHIFTING AND LOGICAL MOIRE USED IN FRINGES ANALYSIS
Zhang Haibo(Department of Modern Mechanics University of Science & Technology of China)A.Asundi(Department of Mechanical Engineering University of Hong Kong)
Phase Shifting And Logical Moire (PSALM) is a kind of computer image processing method which can be used in phase measurement and to obtain the shape, deformation and strain distribution of an object.This paper presents the structure and working procedure of a 2D phase measurement PSALM2D program and its application. When analyzing moire interferometric fringes,we can obtain 2D distribution of displacement and strain.When it is used in reflection moire we can measure the slope of a specimen.Satisfactory visualization and quantitative results are given by PSALM2D.
【CateGory Index】： TH744.3