Abstract
This article deals with some experimental stress analysis issues by means of the PhotoStress method. The method was used in order to find out directions and magnitudes of the main stresses at specific cells of the pressure transducers. Since the experimental analysis has been carried out on the curved surfaces of the transducers, the photoelastic coatings had to be cast, shaped, glued on and calibrated before the measurement itself. First of all the article shortly describes calibration process of the cast photoelastic coating made of PL 8 material. Then the measurement procedure and results of courses for the main stresses magnitudes and their directions, computed by means of a shear stresses difference method, are introduced. The measurement results serve as the basis of the strain gauges placement and directions, in order to assure maximal sensitivity of the transducers.
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