Finite element martensite ratio derivation of NiTi via measurable criteria of strain rate

Amini, A ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1115/SMASIS2009-1452
  3. Abstract:
  4. The shape memory alloys (SMAs) and smart composites have a large use in high and low level industry, while a lot of research is being done in this field. The existence of smart composite structures is because of the advance mechanical benefits of the above materials. This work refers to dynamic and quasi static nonlinear explanation of these materials. After mathematical model consideration on the rate of strain, a model which is about martensite ratio of NiTi has been presented. This work has been done because of the high sensitivity of these materials to strain rate and use of visual and measurable engineering criteria to access other variables. As the martensite ratio is not engineering measurable amount, it needs to have macro scale property to measure this important nano scale criteria. Relative experiments are done to show the rate dependency of NiTi. Copyright © 2009 by ASME
  5. Keywords:
  6. Engineering criterion ; Finite Element ; High sensitivity ; Low level ; Macro scale ; Mechanical benefits ; Nano scale ; Quasi-static ; Rate dependency ; Shape memory alloy ; Smart composites ; Smart-composite structures ; Composite structures ; Intelligent materials ; Intelligent systems ; Martensite ; Mathematical models ; Structure (composition) ; Strain rate
  7. Source: Proceedings of the ASME Conference on Smart Materials, Adaptive Structures and Intelligent Systems 2009, SMASIS2009, 21 September 2009 through 23 September 2009, Oxnard, CA ; Volume 1 , 2009 , Pages 641-647 ; 9780791848968 (ISBN)
  8. URL: http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=1648774