ULTRASONIC NONDESTRUCTIVE TECHNIQUES AND INSTRUMENTATION FORTRANSPARENT ENCLOSURES OF HIGH PERFORM A/C

Award Information
Agency:
Department of Defense
Branch:
Air Force
Amount:
$353,118.00
Award Year:
1991
Program:
SBIR
Phase:
Phase II
Contract:
N/A
Agency Tracking Number:
9432
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Analytic Engineering Co
2810 Winthrop Rd, Lincoln, NE, 68502
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
N/A
Principal Investigator
 Dr Nisar Shaikh
 (402) 472-6692
Business Contact
Phone: () -
Research Institution
N/A
Abstract
AIRCRAFT TRANSPARENCIES REPRESENT ONE OF THE MOST SIGNIFICANT LIFE CYCLE COST TO THE U.S. AIR FORCE. THE MAJOR CAUSE FOR THE OPTICAL IMPAIRMENT IS THE DEGRADATION IN PLASTICS KNOWN AS CRAZING WHICH OCCURS DUE TO SURFACE STRESSES AND IS ACCELERATED BY THE ENVIRONMENTALFACTORS. THE OBJECTIVE OF THE PROJECT IS TO DEVELOP THE NECESSARY TECHNIQUE TO MEASURE AND QUANTIFY THE CRAZING AND SHOW FEASIBILITY OF A PORTABLE INSTRUMENT TO CARRY OUT THE EVALUATION IN FIELD. SUCH A CAPABILITY AFFORDS USAF TO VALIDATE ACCELERATED CRAZING TESTS, ENABLE PURCHASE OF THE CANOPIES BASED ON LIFE CYCLE COST, OVERALL REDUCE COST AND INCREASE COMBAT READINESS. THE PRUDENT APPROACH IS WELL RESEARCHED SURFACE ACOUSTIC WAVE TECHNIQUES WHICH HAVE BEEN SUCCESSFUL IN LOCATING MINUTE CRACKS IN METALS AND CERAMICS. THE MOST IMPORTANT FACTOR IN CHOICE OF ACOUSTIC TECHNIQUE IS THEIR ABILITY TO MEASURE THE RESIDUAL STRESSES WHICH DETERMINE THE REMAINING LIFE OF OPTICAL PERFORMANCE. WE ANTICIPATE AN ELEGANT MEASUREMENT SCHEME THAT CAN CHARACTERIZE THE EXISTING CRAZES AND INDICATE THE PROBABLE TIME OF FUTURE OCCURENCE.

* information listed above is at the time of submission.

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