Abstract
The present study shows the development of three-dimensional displacement measurement of a simply supported beam using digital holography and refractive-index matching. The beam is made of acrylic resin and tracer particles are uniformly dispersed in the beam. The displacement of the beam is obtained by each dispersed particle's positions between unloaded and loaded beam. Three-dimensional position of the particle is measured by digital holography. The beam is installed in the water tank which is filled with a refractive-index matching liquid. Aqueous solution of Sodium iodide is used as a matching liquid. Experimental results on the three-dimensional displacement field and the measurement accuracy of three components are presented.
