Analysis of phase transformation fronts in SMA composites

Nancy R. Sottos, G. E. Kline, M. A. Qidwai, Dimitris C. Lagoudas

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Shape memory alloy (SMA) wires can be embedded in a host material to alter the stiffness or modal response and provide vibration control. The interaction between the embedded SMA and the host material is critical to applications requiring transfer of loads or strain from the wire to the host. Although there has been a significant amount of research dedicated to characterizing and modeling the response of SMA alone, little research has focused on the transformation behavior of embedded SMA wires. In the current work, photoelasticity is utilized to quantify the development of internal stresses induced by the actuation of a SMA wire embedded in a pure polymer matrix. Through the use of a CCD camera and a frame grabber, photoelastic images are digitally recorded at discrete time increments. Shear stresses induced during the actuation are calculated as a function of time. Computational predictions of the transformation fronts are made using finite elements analysis and compared with experimental observations.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsVasundara V. Varadan, Jagdish Chandra
Pages427-438
Number of pages12
StatePublished - 1996
EventSmart Structures and Materials 1996: Mathematics and Control in Smart Structures - San Diego, CA, USA
Duration: Feb 26 1996Feb 29 1996

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume2715

Other

OtherSmart Structures and Materials 1996: Mathematics and Control in Smart Structures
CitySan Diego, CA, USA
Period2/26/962/29/96

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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