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Review of Composite Analysis Methods for High Temperature Applications

by J. G. Crose, PDA Engineering Inc, United States,



Document Type: Proceeding Paper

Part of: Structural Materials

Abstract:

This paper addresses a number of unique problems encountered in the stress analysis of high temperature composite materials. The materials used as structures subjected to temperatures as high as 6000?F are very unique in their behavior. Both thermodynamically stable and unstable materials are used. The stable materials are usually a form of graphite. Since the graphite crystal is highly anisotropic in stiffness, strength and expansion, a wide range of composite properties can result and most of these materials are severely micro-cracked in the room temperature condition. The unstable materials undergo decomposition when subjected to elevated temperatures which dramatically affects their thermomechanical behavior.

Subject Headings: Composite materials | Material properties | Stress analysis | Finite element method | Thermal analysis | Temperature effects | Thermal loads

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