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Simplified Analytical Procedure for Prediction of Fracture Damage in Composite…

Award Information

Department of Defense
Award ID:
Program Year/Program:
2003 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Materials Sciences Corporation
135 Rock Road Horsham, PA 19044-
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2003
Title: Simplified Analytical Procedure for Prediction of Fracture Damage in Composite Structures (MSC P1B16-203)
Agency / Branch: DOD / NAVY
Contract: N00014-03-C-0208
Award Amount: $0.00


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.

Principal Investigator:

Gerald Flanagan
Technical Director

Business Contact:

Adam T. Rosen
Chief Financial Officer
Small Business Information at Submission:

500 Office Center Drive, Suite 250 Fort Washington, PA 19034

EIN/Tax ID: 232462974
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No