Experimental investigation on the thermo-mechanical deformation of thermo-induced shape memory polyurethane

The influences of loading conditions on the shape memory effect (SME) of thermo-induced shape memory polyurethane (TSMPU) are investigated by series of thermo-mechanical deformation experiments. The variables related to mechanical responses and the strain contours are extracted to analyze the SME. It is shown that the recovery ratio gradually decreases and the residual strain gradually accumulates with the increase of number of cycles. Then, the...