Abstract
In this paper a photoelastic method is described for the study of stresses in cylindrical shafts due to pure torsion. The basic photoelastic equation governing this case is derived. It is shown that the maximum stresses, i.e., the boundary stresses, can be determined from a single stress pattern, and that the two stress components which define the complete stress system in pure torsion at an interior point can be determined from two stress patterns obtained from one section of a shaft into which the pure-torsion system has been frozen, employing to this end the Drucker-Mindlin suggestion of oblique incidence. The method is applied to a circular shaft, and the experimental results are found to be in complete agreement with the theory.
Compact omnidirectional multicore fiber-based vector bending sensor
