WE PROPOSE TO INVESTIGATE THE EFFECT OF REVERSING THE CURE SHRINKAGE, AND THEREBY REDUCING THE RESIDUAL STRESSES, ON THE DAMAGE ACCUMULATION IN GRAPHITE/EPOXY COMPOSITES.

Award Information
Agency: Department of Defense
Branch: Army
Contract: N/A
Agency Tracking Number: 4443
Amount: $49,830.00
Phase: Phase I
Program: SBIR
Awards Year: 1986
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Strategic University Resources
31 Division Ave, South Nyack, NY, 10960
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 LYNN PENN
 (914) 458-2753
Business Contact
Phone: () -
Research Institution
N/A
Abstract
WE PROPOSE TO INVESTIGATE THE EFFECT OF REVERSING THE CURE SHRINKAGE, AND THEREBY REDUCING THE RESIDUAL STRESSES, ON THE DAMAGE ACCUMULATION IN GRAPHITE/EPOXY COMPOSITES. THE PROPOSED PROGRAM IS BASED ON COMPARISON OF RESIDUAL STRESSES AND DAMAGE ACCUMULATION BEHAVIOR IN EXPERIMENTAL COMPOSITES WITH THAT IS CONTROL COMPOSITES. THE CONTROL COMPOSITE, WHOSE PROPERTIES SERVE AS THE REFERENCE, IS GRAPHITE FIBER COMPOSITE WITH A HEAT-CURABLE EPOXY RESIN MATRIX. THE EXPERIMENTAL COMPOSITE, WHOSE DAMAGE RESISTANCE IS EXPECTED TO BE IMPROVED, IS THE SAME AS THE CONTROL EXCEPT FOR THE ADDITION TO THE MATRIX OF A SMALL AMOUNT OF THERMALLY STABLE POLYMER THAT EXPANDS RATHER THAN SHRINKS ON CURE. THE TECHNICAL OBJECTIVE FOR PHASE I ARE TO FIRST DEMONSTRATE A DIFFERENCE IN COMPOSITE LAMINATE RESIDUAL STRESSES BETWEEN THE EXPERIMENTAL AND CONTROL LAMINATES, AND TO NEXT DEMONSTRATE A RESISTANCE TO DAMAGE ACCUMULATION ON THE PART OF EXPERIMENAL LAMINATES VERSUS THE CONTROL LAMINATES.

* information listed above is at the time of submission.

Agency Micro-sites

SBA logo
Department of Agriculture logo
Department of Commerce logo
Department of Defense logo
Department of Education logo
Department of Energy logo
Department of Health and Human Services logo
Department of Homeland Security logo
Department of Transportation logo
Environmental Protection Agency logo
National Aeronautics and Space Administration logo
National Science Foundation logo
US Flag An Official Website of the United States Government