220 Development of Reflecting Type Laser Photoelasticity
Keywords:
laser photoelasticity,
reflecting type,
photoelastic,
stress measurement,
electronic device,
photoelastic modulator
Details
The reflection type laser photoelasticity that possesses high detection sensitivity of the birefringence measurement was developed to detect the stress of the film formed on the surfaces. A He-Ne Laser was used as a light source. The magnitudes of principal stress difference and the direction of the principal stress were obtained simultaneously and quantitatively using our equipment. This type of photoelasticity has a problem that the reflected light from film surface give rise to the error of measurement. We had investigated the influence of the reflected light from film surface for measurement value.
