Photoelastic Analysis Of Dovetail Joints For Turbine Blades

Both room temperature and frozen stress techniques of photoelasticity were used to study the stress distributions in two-dimensional models of an axially loaded dovetail type of joint. The geometry of the joint and the location of the loading were varied. Stress separations were carried out in the interior of the models as close to the loaded boundaries as was found to be feasible, using the Shear Difference method.