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Article citations


P. Vacher, S. Dumoulin, F. Morestin and S. MguilTouchal, “Bidimensional Strain Measurement Using Digital Images,” Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, Vol. 213, No. 8, 2010, pp. 811-817.

has been cited by the following article:

  • TITLE: Strain Capacities Limits of Wrought Magnesium Alloys: Tension vs. Expansion

    AUTHORS: R. Boissiere, P. Vacher, J. J. Blandin, A. Khelil

    KEYWORDS: Tension; Expansion; Image Correlation; Magnesium Alloys; Strain Measurements; 3D Digitization; Hemispheric Punch; Deep-Drawing

    JOURNAL NAME: Materials Sciences and Applications, Vol.4 No.12, December 6, 2013

    ABSTRACT: Lightening structure is one of the goals of many fields of research. As a result, magnesium alloys are studied due to their low density. However, one drawback of these alloys is their low formability at room temperature due to their hexagonal closed-packed structure. In the present work, the forming capacity of an AZ31 Mg alloys has been studied using a mini deep-drawing device, image correlation techniques and tests (tension and expansion) at temperatures contained between 20°C and 200°C. To investigate formability limits of Mg alloys in expansion, major and minor strains data were generated using hemispherical punch tests and analyzed with 3D digital images correlation techniques. Thanks to images correlation, strains on the surface of the samples were observed by means of a double digitization of the sample in three dimensions before and after deformation by using stereoscopic vision and triangulation. Image correlations have also been used in 2D to measure strains on the surface of the tensile test samples. These tests gave interesting information on the evolution of various parameters such as hardening coefficient, strain rate sensitivity parameter, and Lankford coefficient, which may affect the behavior of the alloys. Finally, the forming limits in both configurations (tension and expansion) were compared and discussed.