Generating a statistically equivalent representative volume element with discrete defects. (1st October 2016)

• Record Type: Journal Article
• Authors: Tal, David; Fish, Jacob
• Is Part Of: Composite structures. Volume 153(2016)
• Page Start: 791
• Page End: 803
• Publication Date: 2016-10-01
• Subjects: Textile composite -- Random defects -- Representative volume element -- Micromechanical model; Composite construction -- Periodicals; Composites -- Périodiques; 624.18
• DOI: 10.1016/j.compstruct.2016.06.077
• Languages: English
• ISSNs: 0263-8223

Abstract

Abstract: The random nature of the microstructural attributes in fabricated composite material gives rise to developing a representative volume element which incorporates the aforementioned randomness. In this paper we present a methodology for generating a realistic volume element with discrete defects that are statistically equivalent random defects in a Sic/SiNC samples. Data extracted from two dimensional cross-sectional micrographs leads to the geometric statistical characterization of stochastic micro-scale discontinuities. Three dimensional discrete ellipsoidal voids are then introduced to a defect-free eight-harness weave model based on the obtained statistical characteristics, using a Monte-Carlo simulation. The geometric parameters of the generated defects result in target statistics equivalent to that of the defects in the micrographs.