NONDESTRUCTIVE EVALUATION OF ADHESIVE BONDS IN COMPOSITE MATERIALS

Award Information
Agency:
Department of Defense
Branch
Army
Amount:
$50,000.00
Award Year:
1990
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
12683
Agency Tracking Number:
12683
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
808 Pershing Dr - Ste 104, Silver Spring, MD, 20910
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Lawrence E Larsen
(301) 585-0464
Business Contact:
() -
Research Institute:
n/a
Abstract
ADHESIVELY JOINED STRUCTURES ARE A COMMON FEATURE OF MANY MILITARY, COMMERCIAL, AND MEDICAL APPLICATIONS. THESE MAY EMPLOY COMPOSITE TO COMPOSITE (E.G. LAMINATED PANELS OR FIBER/RESIN SKINS ON NONMETALLIC HONEYCOMB) AND/OR COMPOSITE TO METALLIC (E.G. FIBER/RESIN SKINS ON ALUMINUM HONEYCOMB) ADHERENDS. STRUCTURES ARE ALSO MADE OF SEGMENTS WITH LOCALLY TAILORED PROPERTIE WHEREIN THE FINAL REULT DEPENDS UPON BONDS BETWEEN THE SEGMENTS. YET NO FULLY SATISFACTORY METHOD OF INSPECTION FOR BONDS EXISTS (STONE, 1986). THIS SHORTFALL HAS A GROWING INFLUENCE, ESPECIALLY IN THE TESTING OF ADHESIVE REPAIRS TO COMPOSITE STRUCTURES AS THE USE OF COMPOSITE MATERIALS PROLIFERATE. PROPERLY PERFORMED, ADHESIVE REPAIRS ARE BETTER THAN MECHANICAL REPAIRS IN SUCH STRUCTURES (KELLY, 1984). THE PRESENT PROPOSAL ADDRESSES THE PROBLEM OF BOND TESTING WITH A NEW METHOD THAT IS ESPECIALLY SUITABLE FOR HIGH SPEED SCREENING OF BONDED STRUCTURES. PHASE I IS A PROOF OF PRINCIPLE FOR DETECTION OF BOND DEFECTS IN THE MATERIALS CITED ABOVE WHEREAS PHASE II INCLUDES DEFECT LOCALIZATION PLUS LARGE SCALE TESTING.

* 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

Enviromental Protection Agency logo

National Aeronautics and Space Administration logo

National Science Foundation logo
US Flag An Official Website of the United States Government