On the Thermomechanical Behavior of Ni60Ti40 Coupons via High Performance Full Field Experiments Conference Paper uri icon

abstract

  • Emerging applications for shape memory alloys, such as actuation and energy absorption devices, require better understanding of the mechanics and failure behaviors associated with these materials. In this paper we study the inelastic response of a NiTi alloy under combined thermomechanical actuation. In particular, failure due to strains generated by cooling under isobaric and isothermal conditions is investigated. Strain measurements are performed using a new technique known as Direct Strain Imaging, which provides full field strains of both higher accuracy and higher spatial resolution than previously achievable. The experimental data support the conclusion that the type of fracture observed may be attributed to stress redistribution, caused by a phase transformation.

name of conference

  • ASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference

published proceedings

  • Volume 1A: 36th Computers and Information in Engineering Conference

author list (cited authors)

  • Iliopoulos, A. P., Steuben, J. C., Michopoulos, J. G., Baxevanis, T., Kirk, T., & Lagoudas, D. C

citation count

  • 1

complete list of authors

  • Iliopoulos, Athanasios P||Steuben, John C||Michopoulos, John G||Baxevanis, Theocharis||Kirk, Tanner||Lagoudas, Dimitris C

publication date

  • August 2016