Residual Stresses in Injection Molded Shape Memory Polymer Parts

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Katmer S., ESEN H., KARATAŞ Ç.

31st International Conference of the Polymer-Processing-Society (PPS), South Korea, 7 - 11 June 2015, vol.1713 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 1713
  • Doi Number: 10.1063/1.4942338
  • Country: South Korea
  • Keywords: Shape memory polymer, injection molding, residual stress, layer removal method, DESIGN
  • Gazi University Affiliated: Yes


Shape memory polymers (SMPs) are materials which have shape memory ellect (SME). SME is a property which has the ability to change shape when induced by a stimulator such as temperature, moisture, pH, electric current, magnetic field, light, etc. A process, known as programming, is applied to SNIP parts in order to alter them from their permanent shape to their temporary shape. In this study we investigated effects of injection molding and programming processes on residual stresses in molded themioplastic polyurethane shape memory polymer, experimentally. The residual stresses were measured by layer removal method. The study shows that injection molding and programming process conditions have significantly influence on residual stresses in molded shape memory polyurethane parts.