Microwave-enhanced chemical vapor infiltration: A sharp interface model

Document Type

Article

Publication Date

9-1-2001

Abstract

A simple one-dimensional model for describing CVI into a fibrous preform is presented and analyzed. The derivation requires that the thermal and electrical properties of the preform and substrate are disparate. Mathematically the model takes the form of a moving-boundary problem, where the boundary is the interface between the preform and the substrate. Effects of heat loss and radiation at the boundaries and the nonlinear dependence of dielectric parameters on temperature are all taken into account, in addition to the spatial dependence on gas concentration. Processing times for different power levels and inlet concentrations for different initial substrate thicknesses are obtained, and the implications to processing strategies are discussed.

Identifier

0035449369 (Scopus)

Publication Title

Journal of Engineering Mathematics

External Full Text Location

https://doi.org/10.1023/A:1011816630517

ISSN

00220833

First Page

33

Last Page

54

Issue

1

Volume

41

Grant

DE-FG02-94ER25196

Fund Ref

National Science Foundation

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