NDI OF COMPOSITE STRUCTURAL MATERIALS BY GAMMA SCATTER SENSING

Award Information
Agency: Department of Transportation
Branch: N/A
Contract: N/A
Agency Tracking Number: 9301
Amount: $50,000.00
Phase: Phase I
Program: SBIR
Awards Year: 1988
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Patriots Park, Bedford, MA, 01730
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 CHARLES C BLATCHLEY PHD
 () -
Business Contact
Phone: () -
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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