“…The measurement and analysis of temperature fields during mechanical tests are often used (i) to analyze a physical phenomenon (e.g., Portevin-Le Châtelier (PLC) bands in aluminum alloys Ranc and Wagner, 2005;Louche et al, 2005, phase transformations in shape memory alloys Balandraud et al, 2001), (ii) to validate hypotheses (e.g., self-heating localized in a structure to correlate with the region of fatigue initiation Charkaluk et al, 2002), (iii) to identify macroscopic parameters (e.g., velocity of PLC bands Ranc and Wagner, 2005;Louche et al, 2005, fatigue properties Luong and Dang Van, 1994;Krapez et al, 1999;La Rosa and Risitano, 2000;Liaw et al, 2000;Morabito et al, 2002;Doudard et al, 2005;Meneghetti, 2007;Ummenhofer and Medgenberg, 2009, the scatter of fatigue limits Doudard et al, 2004, multiaxial fatigue criteria Doudard et al, 2007;Poncelet et al, 2007), (iv) or to validate the thermodynamic framework of a macroscopic model (Vincent, 2008). As temperature variation is not totally intrinsic to the material behavior (it depends on the diffusion properties of the materials but also on thermal boundary conditions), the development of constitutive equations in a thermodynamic framework (Germain et al, 1983;Lemaitre and Chaboche, 1990) requires the determination of the heat source field accompanying these phenomena (e.g., PLC bands, fatigue properties).…”