NDI OF COMPOSITE STRUCTURAL MATERIALS BY GAMMA SCATTER SENSING

Award Information
Agency:
Department of Transportation
Branch
n/a
Amount:
$50,000.00
Award Year:
1988
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Agency Tracking Number:
9301
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Spire Corp
Patriots Park, Bedford, MA, 01730
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
CHARLES C BLATCHLEY PHD
() -
Business Contact:
() -
Research Institution:
n/a
Abstract
WITHOUT EFFECTIVE NONDESTRUCTIVE INSPECTION (NDI) MENTHODS, STRUCTURES EMPLOYING COMPOSITE MATERIALS MUST RELY ON LARGE DESIGN MARGINS OF SFETY AND EXPENSIVE INDIVIDUAL COMPONENT PROOF TESTING. OBJECTIVE OF THE PROPOSED PHASE I RESEARCH IS TO REMEDY THIS WITH GAMMA RAY SCATTERING COUNTING, A FORMOF RADIOMETRY WIDELY USED TO MEASURE THICKNESS AND COMPOSI- TION OF EMPHASIS ON DEVELOPING A PORTABLE SYSTEM CAPABLE OF CHARACTERIZING DEFECTS IN LAMINATES OF VARYING THICKNESS. PENDING THE OUTCOME OF THESE TESTS, A PROTOTYPE INSPECTION DEVICE WILL BE DEVELOPED AND TESTED IN PHASE II. UNLIKE CONVENTIONAL RADIOGRAPHY OR RADIOMETRY, GAMMA SCATTERREQUIRES ACCESS TO JUST ONE SURFACE, AND THROUGH PROPER COL-LIMATION CAN BE MADE TO IGNORE SURFACE FEATURES AND SENSE ONLY DEFECTS INSIDE A COMPOSITE STRUCTURE. IT CAN BE EX- TREMELY RUGGED; DETECTORS AND ELECTRONICS SIMILAR TO THOSE REQUIRED FOR A HAND-HELD INSPECTION UNIT HAVE BEEN SUCCESS- FULLY BOOSTED INTO SPACE. OTHER POTENTIAL USES INCLUDE DETECTING INCIPIENT CRACKING OR CORROSION DAMAGE IN STRUC- TURES ALREADY IN USE.

* information listed above is at the time of submission.

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