Mechanical properties of crimped mineral wools: Identication from digital image correlation

Abstract : Crimped mineral wools are characterized by a strongly anisotropic microstructure, whose local preferential orientation is highly heterogeneous. It is proposed to identify the local anisotropic elastic behavior through a combination of different tools based on image analysis. First, the local orientation map is determined from a reference image. Second, a series of images captured at different loading stages is analyzed with a digital image correlation code to estimate the displace- ment field. Last, an inverse analysis is applied to evaluate the four elastic moduli of the local elastic properties. This procedure is tested against a set of experimental data on mineral wool with different crimping structures.
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Submitted on : Tuesday, September 16, 2008 - 11:27:00 PM
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Jean-François Witz, Stéphane Roux, François Hild, Jean-Baptiste Rieunier. Mechanical properties of crimped mineral wools: Identication from digital image correlation. Journal of Engineering Materials and Technology, American Society of Mechanical Engineers, 2008, 130, pp.021016-1-7. ⟨10.1115/1.2884575⟩. ⟨hal-00322194⟩

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