Journal of Materials Science

, Volume 41, Issue 20, pp 6647–6654 | Cite as

Multi-scale modeling of refractory woven fabric composites

Article

Abstract

Thermomechanical analysis of a refractory, woven fabric composite was conducted using a multi-scale analysis technique. The composite was made of carbons and ceramic materials. The fibers were made of carbons and the outer coating was made of a ceramic material. In order to reduce the thermal stress in the carbon fibers and the ceramic material caused by mismatch of coefficients of thermal expansion between the two materials, a graphitized carbon layer was introduced between the fiber and the ceramic coating. For the multi-scale analysis, a new analysis model was developed and used to bridge the micro-scale characteristics, i.e. the constituent material level such as carbon and ceramic materials, to the macro-scale behavior, i.e. the woven fabric composite level. Furthermore, finite element analyses were undertaken with discrete modeling of the representative fibers, coating, and the graphitized middle layers. Then, both multi-scale analytical and numerical results were compared. In this study, thermal stresses at the micro-level, i.e. in the fibers and coating materials, as well as effective thermomechanical properties of the refractory composites were computed using the multi-scale technique.

Keywords

Thermal Stress High Thermal Stress Weak Interlayer Weave Fabric Composite Refractory Composite 

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Copyright information

© Springer Science+Business Media, LLC 2006

Authors and Affiliations

  1. 1.Department of Mechanical and Aeronautical EngineeringNaval Postgraduate SchoolMontereyUSA
  2. 2.Department of Mechanical Engineering and Energy ProcessesSouthern Illinois UniversityCarbondaleUSA

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