EVALUATION OF EFFECTIVE PROPERTIES OF BASALT TEXTILE REINFORCED CERAMIC MATRIX COMPOSITES

• Main Authors: Soňa Valentová, Vladimír Hrbek, Michal Šejnoha
• Format: Article
• Language: English
• Published: CTU Central Library 2017-11-01
• Series: Acta Polytechnica CTU Proceedings
• Subjects: Basalt fibers, textile composites, homogenization, periodic unit cell, damage
• Online Access: https://ojs.cvut.cz/ojs/index.php/APP/article/view/4653

The present paper is concerned with the analysis of a ceramic matrix composite, more specifically the plain weave textile fabric composite made of basalt fibers embedded into the pyrolyzed polysiloxane matrix. Attention is paid to the determination of effective elastic properties of the yarn via homogenization based on the Mori-Tanaka averaging scheme and the 1st order numerical homogenization method adopting a suitable representative computational model. The latter approach is then employed to simulate the response of the yarn when loaded beyond the elastic limits. The required mechanical properties of individual material phases are directly measured using nanoindentation with in-build scanning probe microscopy. Applicability of the proposed computational methodology is supported by the analysis of a unidirectional fibrous composite, representing the yarn, subjected to a macroscopically uniform strain.