Residual Property Prediction for Damage Composite Structures

Award Information
Agency: Department of Defense
Branch: Army
Contract: W31P4Q-13-C-0012
Agency Tracking Number: A122-083-0535
Amount: $150,000.00
Phase: Phase I
Program: SBIR
Awards Year: 2012
Solicitation Year: 2012
Solicitation Topic Code: A12-083
Solicitation Number: 2012.2
Small Business Information
Global Engineering Research and Technologies
2845 E. 2nd Street, Tucson, AZ, -
DUNS: 627888675
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Ali Boufelfel
 Senior Scientist
 (520) 561-5724
Business Contact
 Ibrahim Guven
Title: Vice President
Phone: (520) 261-1426
Research Institution
During a components service life, damage due to high or low energy impact may be introduced, which may lead to premature failure of these 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. Currently, there is no analysis capability that can predict all possible failure modes concerning advanced composites because damage initiation and its progressive growth is very complex, and that commonly accepted methods, such as finite element method or smoothed-particle hydrodynamics, break down. However, damage prediction in peridynamic theory (PD) is more realistic than the methods utilizing the classical continuum theory since the PD considers material failure as a part of the material response without resorting to any external damage criterion. Therefore, the PD appears to be the best candidate for damage assessment in advanced composite structures. The goal of this proposed project is to develop a methodology for accurate prediction of damage due to blast and penetration events as well as low-energy impacts, and determination of the residual strength resulting from these events on advanced composite structures and components.

* information listed above is at the time of submission.

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