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Thick Composite Crack Analysis

Award Information

Department of Defense
Award ID:
Program Year/Program:
2013 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Global Engineering Research and Technolo
2845 E. 2nd Street Tucson, AZ 85716-
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2013
Title: Thick Composite Crack Analysis
Agency: DOD
Contract: N68335-13-C-0407
Award Amount: $80,000.00


Advanced thick composites are increasingly used in components for defense applications as well as commercial structures. Component level structural testing and analysis of advanced composites is prohibitively expensive and time consuming. Instead, using robust and accurate computational tools complemented by experiments at key stages is a viable and cost-effective option. The proposed project will advance structural methods and material technologies that enable reliable assessment of capability and useful life of composite aircraft flight-critical components and structures. The physics-based peridynamics (PD) methodology overcomes the weaknesses of the existing methods, and it is capable of identifying all of the failure modes without simplifying assumptions. The PD methodology effectively predicts complex failure in composite structures under general dynamic and static loading conditions. Damage is inherently calculated in a PD analysis without special procedures, making progressive failure analysis more practical. This results in a more efficient and cost effective design that meets reliability goals. The proposed approach will also replace some of the coupon-level tests used in the material qualification with computational models (virtual tests) validated with empirical data (measurement.). Such techniques will advance our ability to predict material behavior and enable affordable qualification of composite materials for structural applications.

Principal Investigator:

Ali Boufelfel
Senior Scientist
(520) 561-5724

Business Contact:

Ibrahim Guven
Senior Scientist
(520) 275-5718
Small Business Information at Submission:

Global Engineering Research and Technologies
2845 E. 2nd Street Tucson, AZ -

EIN/Tax ID: 205427639
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No