SBIR-STTR Award

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Chemical Vapor Infiltration Design Optimization
Award last edited on: 4/8/2014

Sponsored Program
STTR
Awarding Agency
DOD : AF
Total Award Amount
$421,997
Award Phase
2
Solicitation Topic Code
AF94T002
Principal Investigator
Dennis F Torok

Company Information

Fluid Dynamics International Inc

1600 Orrington Avenue Suite 400
Evanston, IL 60201
   (312) 491-0200
   N/A
   N/A

Research Institution

Northwestern University

Phase I

Contract Number: FQ8671-9401487
Start Date: 8/30/1994    Completed: 8/29/1995
Phase I year
1994
Phase I Amount
$97,779
A new software tool is proposed for the optimal design of materials processing equipment for production of coated preforms using a chemical vapor infiltration process (CVI). The numerical predictions of the software in the analysis of specific CVI processes involving trichlorosilane and hydrogen will be compared with experimental results obtained in a CVI reactor. Deposition rates and other critical features will be compared. Validation of the simulation tool will be the prerequisite to development of an automated numerical procedure for optimizing the design of CVI reactors.

Keywords:
DESIGN OPTIMIZATION, CHEMICAL VAPOR INFILTRATION, NUMERICAL SIMULATION, MATERIALS PROCESSING

Phase II

Contract Number: N/A
Start Date: 12/12/1995    Completed: 12/11/1997
Phase II year
1995
Phase II Amount
$324,218
A new software tool is proposed for the optimal design of materials processing equipment for production of ceramic-matrix composites with application to chemical vapor infiltration processes (CFI). The software will have the capability to provide predictions of the time varying deposition rate or increase in the fiber radius within preforms. Numerical predictions of the change in fiber radius with time will be compared with experimental results. Simulations illustrating the effect of process scale-up, preform architecture, and part geometry will be illustrated. The infiltration model will be implemented within the commercial software package, FIDAP, and made available to the user community at the time of the next scheduled release of FIDAP.

Keywords:
DESIGN OPTIMIZATION, CHEMICAL VAPOR INFILTRATION, NUMERICAL SIMULATION, MATERIALS PROCESS