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Interlaminar Mode I and Mode II Fracture Toughnesses in Ceramic Matrix Composites (CMCs)

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-15-C-0080
Agency Tracking Number: N13A-008-0073
Amount: $498,746.00
Phase: Phase II
Program: STTR
Solicitation Topic Code: N13A-T008
Solicitation Number: 2013.0
Solicitation Year: 2013
Award Year: 2015
Award Start Date (Proposal Award Date): 2015-06-24
Award End Date (Contract End Date): 2017-05-11
Small Business Information
United States
DUNS: 603371238
HUBZone Owned: No
Woman Owned: Yes
Socially and Economically Disadvantaged: No
Principal Investigator
 Frank Abdi
 (562) 961-7827
Business Contact
 Kay Matin
Title: Materials Engineer
Phone: (562) 961-7827
Research Institution
 University of Akron
 Dr. Gregory Morscher
302 E. Butchel Ave.
Akron, OH 44325-3903
United States

 (330) 972-7741
 Nonprofit College or University

The Alpha STAR Corporation and the University of Akron STTR Phase II proposal will establish ASTM standards test methods to determine relevant ceramics matrix composites (CMC) delamination crack growth resistance (CGR) material properties (Mode I & Mode II)under service load temperature conditions. Phase Ii will expand on Phase I results, conclusions & recommendations. Emphasis will be on testing techniques and quality specimen preparation that will result in lower test scatter/higher accuracy and high temperature testing with improved non-visual measurements using AE/ER (acoustic emission and electrical resistivity). Phase II will test several class of CMC's coupons (e.g., SiC/SiC, Sic/SiNc, Oxide/Oxide), and ASTM approved test standards with round-robin verification including simple data analysis methods (e.g. modified bean equation). A significant reduction in design time and cost will be achieved by using validated & calibrated virtual testing software that can rapidly assess durability & damage tolerance (D&DT) and reliability of CMC structures based on FAA recommended building block strategy. Robust design optimization technique integrated with multi-scale modeling (damage and fracture evolution) will be used to maximize the ASTM design performance and address the CMC test issues (e.g., zig-zag crack pattern, blunt/sharp notch width effect.

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

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