Analysis of phase transformation fronts in SMA composites Conference Paper uri icon

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.

name of conference

  • 1996 Symposium on Smart Structures and Materials

published proceedings

  • SPIE Proceedings

author list (cited authors)

  • Sottos, N. R., Kline, G. E., Qidwai, M. A., & Lagoudas, D. C.

editor list (cited editors)

  • Varadan, V. V., & Chandra, J.

publication date

  • January 1, 1996 11:11 AM

publisher