Metodo automatici per l'analisi fotoelastica delle tensioni residue nel vetro

[automatically translated] In glass products are generally present residual stresses caused by machining. In these components, control of residual stresses high importance; for this purpose it is used different methods of analysis, also encoded by the international legislation. Since glass is a birefringent material, techniques developed for the analysis of the residual stresses are mainly based on the photoelastic method. This paper proposed two automatic methods of analysis of residual stress in the membrane type respectively based on RGB photoelasticity glass, in white light, and the phase-change method, monochromatic light. These methods can effectively replace manual methods of compensation (compensation protractor,