Abstract
The linked evolution of heat source distributions and strain rate fields was determined on the surface of steel samples during monotone tensile tests using infrared thermography and speckle techniques. We first showed that one or more narrow and dissipative bands, characterized by high strain rates, propagate along the gauge part of the sample during the plastic plateau that precedes strain hardening. We then describe the early and progressive concentration of strong dissipation zones during the strain hardening phase, which prefigures the localized necking of the sample.
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Chrysochoos, A., Louche, H., Muracciole, J.M., Némoz-Gaillard, M., Saurel, J.L., Wattrisse, B. (2000). Experimental Analysis of Localization Mechanisms in Mild Steels by Infrared and Speckle Image Processing. In: Lagarde, A. (eds) IUTAM Symposium on Advanced Optical Methods and Applications in Solid Mechanics. Solid Mechanics and its Applications, vol 82. Springer, Dordrecht. https://doi.org/10.1007/0-306-46948-0_32
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DOI: https://doi.org/10.1007/0-306-46948-0_32
Publisher Name: Springer, Dordrecht
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