Professor Christensen has published an interesting article in JAM

Professor Richard Christensen, Stanford University, has published an interesting article "Evaluation of Ductile/Brittle Failure Theory and Derivation of the Ductile/Brittle Transition Temperature" in the February, 2016, issue of Journal of Applied Mechanics.  This paper provides a very unique  approach to ductile/brittle transition.  The pdf file of the paper is attached.