The fabrication procedure and evaluation of the mechanical and photomechnical proper ties of a polyester matrix based fiber reinforced material are described here. Two examples of how reflection photoelasticity can be used for analysis of the stress state were discussed. It was shown that the isochromatic fringes in the outside layers were distorted by the adja cent layers due to different fiber directions and that the fringe order can be predicted by finite-element analysis with good accuracy.
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