Identification of the four orthotropic plate stiffnesses using a single open-hole tensile test

Abstract : Identification of in-plane orthotropic elastic properties of composite materials usually requires various specimens and tests, such as tensile tests performed in different directions. However, since more 15 years optical full-field measurement methods supply a huge amount of data from one single test and make it possible to identify properties from quite a limited number of specimens and tests. In particular, interesting studies have been carried out to design new specific testing approach introducing controlled heterogeneity to activate every stiffness components [1]. However, the idea to use a classical test, well-known and performed by the mechanical community, remains quite attractive. The open hole specimen, widely used under various mechanical solicitations, appears as a good candidate. Moreover the feasibility to identify orthotropic parameters of one specimen under tension has been shown [2]. The link between the experimental data and the numerical identification process is still complicated and a particular study, focusing on the utilization of the metrological content of experimental data, is necessary. The present contribution introduces a model which includes both optical and signal processing considerations. A complete study proving the 'identifiability' of the orthotropic elastic properties results in the evaluation of the required quality of experimental data. Finally, a first set of results is presented for a new type of NCF-based composite materials.
Type de document :
Communication dans un congrès
2004 SEM X International Congress & Exposition on Experimental & Applied Mechanics, Jun 2004, Costa Mesa, United States. pp.24829, 2004
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https://hal-emse.ccsd.cnrs.fr/emse-00687052
Contributeur : Florent Breuil <>
Soumis le : jeudi 12 avril 2012 - 09:53:45
Dernière modification le : jeudi 11 janvier 2018 - 06:15:40

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  • HAL Id : emse-00687052, version 1

Citation

Jérôme Molimard, Rodolphe Le Riche, Alain Vautrin, J.R Lee. Identification of the four orthotropic plate stiffnesses using a single open-hole tensile test. 2004 SEM X International Congress & Exposition on Experimental & Applied Mechanics, Jun 2004, Costa Mesa, United States. pp.24829, 2004. 〈emse-00687052〉

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