Abstract
This paper aims to analyze stress by a simple photoelastic experiment with liquid crystal display (LCD). First, we investigated angle of the Principal surface of polarization plate in LCD. Second, fringe of acrylic rod which was subjected to static four-point bending loading was observed by the simple photoelastic experiment with LCD and linear polarization plate only. The photoelastic constant was then measured. As the results, isochromatic lines were only seen at area acting maximum stress. The photoleastic constant value measured from the isochromatic lines was good agreement with that of acrylic.
