J. Cirne, R. Dormeval, et al.
J. Phys. IV France 134 (2006) 603-608
High-temperature tests on aluminium in a split-Hopkinson bar – experimental set-up and numerical predictionsA.H. Clausen, T. Auestad, T. Berstad, T. Børvik and M. Langseth
Structural Impact Laboratory (SIMLab), Department of Structural Engineering, Norwegian University of Science and Technology, 7491 Trondheim, Norway
Published online: 26 July 2006
This paper presents the experimental set-up for high strain-rate tests at elevated temperatures in a split-Hopkinson tension bar. A high current was sent through the specimen, whereby direct resistance heating increased the temperature in the material to 300C within a few seconds. Such a fast increase reduces the heat transfer to the bars and is thus a considerable benefit of the applied method. Another advantage is that the specimen is optical visible. Using test specimens made of the aluminium alloy AA6005-T6, the possible influence of the heating equipment on the response was investigated both experimentally and numerically by means of the non-linear FEM program LS-DYNA. Based on these studies, the heating device seems to have only a minor influence on the measurements in the test.
© EDP Sciences 2006