Transformation of embedded shape memory alloy ribbons

Krishna D. Jonnalagadda, Nancy R. Sottos, Muhammad A. Qidwai, Dimitris C. Lagoudas

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


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 SMAs. Photoelastic experiments with SMA wires in polymer matrices had previously provided a qualitative understanding of stress transfer in SMA composites. In the current work, 2D photoelasticity is utilized to quantify the internal stresses induced by the actuation of a thin SMA ribbon 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 shear stress are made using finite element analysis and compared with experimental observations.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSociety of Photo-Optical Instrumentation Engineers
Number of pages12
ISBN (Print)0819424528
StatePublished - 1997
EventSmart Structures and Materials 1997: Mathematics and Control in Smart Structures - San Diego, CA, USA
Duration: Mar 3 1997Mar 6 1997

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


OtherSmart Structures and Materials 1997: Mathematics and Control in Smart Structures
CitySan Diego, CA, USA

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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