23 April 2008 Thermomechanical characterization of the nonlinear rate-dependent response of shape memory polymers
Author Affiliations +
This study presents the testing techniques used to thermomechanically characterize the material behavior of a shape memory polymer as well as the resulting data. An innovative visual-photographic apparatus, known as a Vision Image Correlation system was used to measure the strain. A series of tensile tests were performed on specimens in which strain levels of 10%, 25%, 50%, and 100% were applied to the material while above its glass transition temperature. After deforming the material to a specified applied strain, the material was constrained and cooled to below the glass transition temperature. Finally, the specimen was heated again to above the transition temperature, and the resulting shape recovery profile was measured. The dependence of the recoverable strain on the heating and cooling rate was investigated in this work. Results showed that strain recovery occurred in a nonlinear fashion with respect to temperature. Results also indicated that the ratio of recoverable strain to the applied strain was a constant value, and was independent of the level of applied strain.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Brent L. Volk, Dimitris C. Lagoudas, Yi-Chao Chen, "Thermomechanical characterization of the nonlinear rate-dependent response of shape memory polymers", Proc. SPIE 6929, Behavior and Mechanics of Multifunctional and Composite Materials 2008, 69291B (23 April 2008); doi: 10.1117/12.776372; https://doi.org/10.1117/12.776372


High-temperature reusable shape memory polymer mandrels
Proceedings of SPIE (March 30 2006)
Model development for shape memory polymers
Proceedings of SPIE (April 02 2008)
Beams with controllable flexural stiffness
Proceedings of SPIE (April 27 2007)
Bistable shape memory thin film actuators
Proceedings of SPIE (August 13 2003)
Evolutionary flight and enabling smart actuator devices
Proceedings of SPIE (April 27 2007)

Back to Top