Abstract
A simply supported beam which has analytical solutions (deflection and stress distribution) is analyzed as Rapid Prototyping (RP) model. The beam is made of acrylic transparent resin and tracer particles are uniformly dispersed. The deflection of the beam is obtained by each dispersed particle's positions between unloaded and loaded beam. Three-dimensional position of the tracer particle is measured by digital holography. In order to suppress the different refractive index between the beam and surrounding air, the beam is installed in the water tank which is filled with a refractive-index matching liquid. The same RP model is repeatedly observed at the same condition. Experimental results on the three-dimensional deflection and stress field and the measurement accuracy are presented.
