Experimental Approach for Metals Mechanical Behavior Characterization at High Temperature: Development of a Complex Tensile Test Machine

Arnaud Pignolet , Christelle Combeaud (1) , Francis Fournier (1) , Gilbert Fiorucci (1) , Christophe Pradille (1) , Yancheng Zhang (1) , Aliz Pinto-Mora , Feng Gao (2) , Michel Bellet (1)

1 CEMEF - Centre de Mise en Forme des Matériaux
2 DERI-NUIG - Digital Enterprise Research Institute

To characterize the mechanical behaviour at high temperature close to the melting point, a tensile test machine has been developed through resistive heating by Joule effect. A closed chamber is designed to control the working environment. By the two windows in the chamber, the temperature and displacement fields can be measured directly. For the machine, both temperature and tensile force can be controlled by the proportional-integral-derivative controller. In this paper, the main features of the machine's design and development will be discussed, with a specific section dedicated to the optimization of the specimens' shape, which is of utmost importance in the context of Joule heating.

Mots clés: Joule effect; controlled environment; proportional-integral-derivative controller; temperature control; force control; temperature measurement

Domaines: Sciences de l'ingénieur [physics]; Matériaux; Sciences de l'ingénieur [physics]

Arnaud Pignolet, Christelle Combeaud, Francis Fournier, Gilbert Fiorucci, Christophe Pradille, et al.. Experimental Approach for Metals Mechanical Behavior Characterization at High Temperature: Development of a Complex Tensile Test Machine. ICEM18, 18th Int. Conf. on Experimental Mechanics, Jul 2018, Bruxelles, Belgium. pp.355, ⟨10.3390/icem18-05207⟩. ⟨hal-01963291⟩