Two dimensional photoelasticity meter and visualisation system - uses polarised light and automatic polarimeter to produce image of model

摘要

Two dimensional photoelasticity meter and visualisation system, us polarised light and an automatic polarimeter to produce an image of a model, has a monochromatic light source (1) followed by a means of polarisation (3) and a focussing system which transmits a light beam (2) onto a model (4) to be studied. The phase shift introduced into the beam by the model is analysed by an automatic polarimeter (5) which comprises a second light source (10) and a system for deflecting and focussing the received beam in order to form an image of the model illuminated by the second light beam on a screen (17).