Strain Curves In Tension Research Articles

Effect of radiation on tension, compression, bending, and shear properties of polyethylene

In this study, the influence of various nuclear radiation doses on the short-time tension, compression, bending and pure shear (torsion) stress–strain properties of polyethylene was investigated. In interpreting the test results, an attempt was made to determine the optimum radiation dose for each of the properties evaluated. In addition to the nominal tension and compression properties, the true stress–strain properties were determined. Nominal properties in bending and torsion were also found. For all four types of stress, the influence of radiation was found using fur different doses of radiation. A second part of this paper deals with the theoretical prediction of bending-curvature and torque–twist relations from true stress–strain curves in tension and compression. A comparison of the predicted and actual relations for the various radiation doses considered shows good agreement between actual and predicted values.