On the driving force for crack growth during thermal actuation of shape memory alloys Academic Article

abstract

• 2015 Elsevier Ltd. All rights reserved. The effect of thermomechanically induced phase transformation on the driving force for crack growth in polycrystalline shape memory alloys is analyzed in an infinite center-cracked plate subjected to a thermal actuation cycle under mechanical load in plain strain. Finite element calculations are carried out to determine the mechanical fields near the static crack and the crack-tip energy release rate using the virtual crack closure technique. A substantial increase of the energy release rate - an order of magnitude for some material systems - is observed during the thermal cycle due to the stress redistribution induced by large scale phase transformation. Thus, phase transformation occurring due to thermal variations under mechanical load may result in crack growth if the crack-tip energy release rate reaches a material specific critical value.

authors

• Lagoudas, Dimitris

published proceedings

• JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS

author list (cited authors)

• Baxevanis, T., Parrinello, A. F., & Lagoudas, D. C.

citation count

• 38

complete list of authors

• Baxevanis, T||Parrinello, AF||Lagoudas, DC

publication date

• January 2016

publisher

• Elsevier  Publisher

published in

• Journal of the Mechanics and Physics of Solids  Journal

keywords

• Actuation
• Finite Elements
• Fracture Toughness
• PHASE TRANSFORMATION
• Shape Memory Alloys

Digital Object Identifier (DOI)

• 10.1016/j.jmps.2015.12.011

start page

• 255

end page

• 271

volume

• 89

URL

• http%3A%2F%2Fdx.doi.org%2F10.1016%2Fj.jmps.2015.12.011

user-defined tag

• 7 Affordable and Clean Energy