An inverse approach to determine the non-linear properties of induction heat-treated steels

André Niclas (1) , Lament Bourgeois (2)

1 LEM3 - Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux
2 LMS - Laboratoire de mécanique des solides

The identification of the through-the-thickness variation of the non-linear properties of a steel structure due to a heat treatment by induction is considered. An inverse approach to that problem is proposed, which is based on a 4-point bending test of a heat-treated parallelepipedic bar. It includes a layer-removal method for measuring residual stresses. Precisely, two different inverse methods are described. For a medium carbon steel, an application based on experimental data is performed, which shows the efficiency of our approach and a good agreement between the two methods.

Mots clés: inverse problem; plasticity; X-ray diffraction; heat treatment; residual stresses

Domaines: Mécanique [physics.med-ph]

André Niclas, Lament Bourgeois. An inverse approach to determine the non-linear properties of induction heat-treated steels. European Journal of Mechanics - A/Solids, 2000, 19, pp.69-88. ⟨10.1016/S0997-7538(00)00152-2⟩. ⟨hal-00111286⟩