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Unique Fabrication Process and Strategy for Complex Flight Structures

Award Information
Agency: Department of Defense
Branch: Defense Advanced Research Projects Agency
Contract: D17PC00191
Agency Tracking Number: D16C-002-0028
Amount: $149,962.32
Phase: Phase I
Program: STTR
Solicitation Topic Code: ST16C-002
Solicitation Number: 2016.0
Solicitation Year: 2016
Award Year: 2017
Award Start Date (Proposal Award Date): 2017-03-20
Award End Date (Contract End Date): 2018-04-19
Small Business Information
133 Defense Highway, Suite 212, Annapolis, MD, 21401
DUNS: 153908801
HUBZone Owned: N
Woman Owned: Y
Socially and Economically Disadvantaged: N
Principal Investigator
 Larry Fehrenbacher
 (410) 224-3710
Business Contact
 Mrs. Sharon Fehrenbacher
Phone: (410) 224-3710
Research Institution
 Southern Research
 Deborah Dille
 (205) 581-2625
 Domestic nonprofit research organization
Hypersonic vehicles impose demanding thermal structural requirements on refractory C/C and CMC materials. The thermal and mechanical properties from small, standard test samples on which the design of specific hypersonic hot structure components are typically based are usually not duplicated in real flight structures. Manufacturing limitations in fabricating real structures versus thin, simple shape test specimens account for the compromised properties. This Phase 1 proposes to demonstrate the ability of a unique and rapid CVI process to produce equivalent, quality microstructures and properties in standard test samples and a thick complex shape that represents properties essential for flight structures. The effort includes testing of thermal conductivity and interlaminar tensile strength from samples taken from the simple and complex shapes at both room and elevated temperature that will be supplemented by microstructural analyses of as-fabricated and post test samples. A virtual model of this configuration will be used to embed a truss structure representative of the fiber tow architecture into a finite element mesh that simulates the matrix. The matrix elements will include cohesive elements to simulate potential delamination between separate regions (e.g., plies).

* Information listed above is at the time of submission. *

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