EXPERIMENTAL STUDY OF THE ULTIMATE STATE OF STEEL SPECIMENS WITH STRESS CONCENTRATORS USING THERMAL IMAGING
E.M. Maksimova1, L.V. Prokop’ev1, Ya.M. Andreev1, S.O. Semenov1, A.S. Andreev1, E.S. Lukin1,2, Yu.A. Yakovlev1
1Yakutsk Scientific Center, Siberian Branch of the Russian Academy of Sciences, Yakutsk, Russia
2Larionov Institute of the Physical-Technical Problems of the North, Siberian Branch of the Russian Academy of Sciences, Yakutsk, Russia
Keywords: thermoplastic effect, thermal imaging measurement, stress concentrator, thermal radiation, experimental mechanics
Abstract
An experimental study of plastic strain localization during static uniaxial tensile testing of steel specimens with asymmetric edge stress concentrators is performed. The study employs modern thermal imaging equipment capable of recording the temporal evolution of temperature fields during deformation. The proposed experimental methodology, based on infrared thermography, is shown to be applicable for investigating the kinetics of elastoplastic deformation and for determining the ultimate state of the material in the stress concentration zone.
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