Identification of heat source fields from infra-red thermography: Determination of ‘self-heating' in a dual-phase steel by using a dog bone sample

Cédric Doudard (1) , Sylvain Calloch (1) , François Hild (2) , Stéphane Roux (2)

1 LBMS - Laboratoire brestois de mécanique et des systèmes
2 LMT - Laboratoire de Mécanique et Technologie

From infra-red thermography, a quantitative analysis of heat dissipation sources is proposed via the thermomechanical modeling of a fatigue test on a specimen with a varying cross-section. A new procedure is introduced to achieve this goal, and its application to an experimental case of self-heating at a single load level is shown to provide complete identification of a probabilistic model of micro-plasticity.

Mots clés: thermography; source identification; fatigue; self-heating

Domaines: Mécanique des matériaux [physics.class-ph]; Mécanique des matériaux [physics.class-ph]

Cédric Doudard, Sylvain Calloch, François Hild, Stéphane Roux. Identification of heat source fields from infra-red thermography: Determination of ‘self-heating' in a dual-phase steel by using a dog bone sample. Mechanics of Materials, 2010, 42, pp.55-62. ⟨10.1016/j.mechmat.2009.09.005⟩. ⟨hal-00430489⟩