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Author Leplay, P. ♦ Réthoré, J. ♦ Meille, S. ♦ Baietto, M.-C.
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File Format PDF ♦ HTM / HTML
Copyright Year ©2010
Abstract The quasi brittle ceramics show a non linear mechanical behaviour resulting most of the time in a dissymetry between their tensile and compressive stress-strain laws. The characterization of their fracture strengths might be biased if elastic linear formulae are used to analyze classical tests like bending tests. Based on Digital Image Correlation (DIC), a methodology is proposed to characterize materials with dissymmetric behaviours. Applying specific DIC decomposition functions for bending, compressive and tensile tests, a stress-strain model and its damage law are identified for aluminium titanate, a damageable micro cracked ceramic. This identification method using DIC can obviously be applied to other quasi brittle materials.
Learning Resource Type Article
Publisher Date 2010-01-01
Journal EPJ Web of Conferences
Issue Number 6