Innovative Composite/Metallic Joint Concepts and Analysis Techniques

Award Information
Agency:
Department of Defense
Branch
Air Force
Amount:
$99,997.00
Award Year:
2006
Program:
SBIR
Phase:
Phase I
Contract:
FA8650-06-M-3633
Award Id:
78840
Agency Tracking Number:
F061-234-4165
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
45 Diamond Hill Rd, Hampton, VA, 23666
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
883752347
Principal Investigator:
Craig Collier
President
(757) 825-0000
craig.collier@hypersizer.com
Business Contact:
Ivonne Collier
Vice President
(757) 825-0000
ivonne.collier@hypersizer.com
Research Institute:
n/a
Abstract
Proposed are two innovations for improved structural analysis and weight savings of composite/metallic joint concepts. First is the development of new structural analysis capabilities and second is the design and analysis of two novel hybrid joint concepts that minimize composite to metallic thermal mismatch. New structural analysis capabilities include two complimentary approaches to damage tolerance. First, a non-FEA fracture mechanics Virtual Crack Closure Technique (VCCT) used to predict crack growth. Second, a continuum based progressive damage model, similar to recent ABAQUS "cohesive" elements, implemented with micromechanics rather than FEA. These analysis methods will be included in the commercial rapid design/analysis/sizing tool called HyperSizerr, resulting in an innovative capability available no where else. The two innovative hybrid joint concepts are a bi-layered strip and slotted fiber metal laminate (FML), both reducing joint residual thermal stresses. The focus of this research is to quantify potential weight savings while ensuring structural integrity through rapid analysis and sizing. To compare relative merit in joint trade studies, a Joint Performance Metric (JPM) will be established for comparing joint strength. In Phase II test articles will be fabricated and tested and results used for analysis code validation and reliability analysis.

* information listed above is at the time of submission.

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