Abstract: In order to measure the surface profile and distribution of deformation of polymer materials with variable curvature, threedimensional measurement system is constructed, based on fringe projection technology. After the high calibration of the system via the use of a new calibration method, the threedimensional profile of an EVA material sheet with an uneven surface was measured. A force was exerted to generate deformation of the sheet, and then its three dimensional profile was measured again. The distribution of deformation was obtained by the analysis of the data collected before and after the deformation. Thus, the surface profile and distribution of deformation of polymer materials with variable curvature were measured.

Key words: threedimensional measurement; measurement of deformation field distribution; fringe projection technology