Simplified Analytical Procedure for Prediction of Fracture Damage in Composite Structures (MSC P1B16-203)

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N00014-03-C-0208
Agency Tracking Number: N021-0651
Amount: $449,996.00
Phase: Phase II
Program: SBIR
Awards Year: 2003
Solitcitation Year: N/A
Solitcitation Topic Code: N/A
Solitcitation Number: N/A
Small Business Information
MATERIALS SCIENCES CORP.
500 Office Center Drive, Suite 250, Fort Washington, PA, 19034
Duns: 075537910
Hubzone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Gerald Flanagan
 Technical Director
 (215) 542-8400
 flanagan@materials-sciences.com
Business Contact
 Adam Rosen
Title: Chief Financial Officer
Phone: (215) 542-8400
Email: mj@materials-sciences.com
Research Institution
N/A
Abstract
A software package is needed that can efficiently model typical composite bonded and co-cured joints used in Naval ship construction. This package must be able to accurately compute the strain-energy-release-rate for user defined cracks. During the PhaseI, Materials Sciences Corporation demonstrated that an existing code called SUBLAM could perform these operations efficiently and accurately. SUBLAM uses closed-form solutions of high-order plate assemblages. Additional analysis features were addedduring the Phase I, and a graphical user interface (GUI) for the code was begun. The Phase II program is designed to bring the code to commercial readiness, including completion of the GUI. Critically needed analysis features will be added, including theability to handle non-plate regions such as fillers and irregular core shapes. Documentation, testing, and verification are also featured in the Phase II program. The completion of the Phase II program will result in an analysis tool that is clearlyneeded by the composite shipbuilding community. Currently, engineers that are not specialist in composites and fracture mechanics do not have a viable method for predicting the strength of many joints used in composite construction. The planned productwill provide this critically needed tool. The immediate impact will be on ships such as DDX and Composite High-Speed Vessel (CHSV) that make extensive use of composites. However, the market can easily be extended to other composite applications includingaircraft, ground vehicles, and infrastructure applications.

* information listed above is at the time of submission.

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