A photoelastic investigation of thermal stresses.
Beck, Lester H.
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This report describes a photoelastic technique for the evaluation of thermal stresses in models fabricated of paraplex p-43. The optical and physical properties of this polyester resin were determined over the temperature range from room temperature to -40°F. Details of the techniques of casting and fabricating the models are given. Tuokerman optical strain gages were utiliized in the determination of the modulus of elasticity and the thermal expansion coefficient. Experimental investigations were conducted into the problems of an annulus contracting upon a steel plug, and the thermal stresses established by steady state heat transfer in a oircular cylinder. The data obtained were correlated with theory utilizing the properties of the photoelastio material obtained in the calibration*
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