FLAW DETECTION, SIZING AND LOCATION BY DIFFERENTIAL GAMMA SCATTERING SPECTRUM TECHNIQUE

Award Information
Agency:
National Science Foundation
Amount:
$238,000.00
Program:
SBIR
Contract:
N/A
Solitcitation Year:
N/A
Solicitation Number:
N/A
Branch:
N/A
Award Year:
1987
Phase:
Phase II
Agency Tracking Number:
1608
Solicitation Topic Code:
N/A
Small Business Information
Florida Nuclear Associates Inc
2284 N.w. 19th Lane, Gainesville, FL, 32605
Hubzone Owned:
N
Woman Owned:
N
Socially and Economically Disadvantaged:
N
Duns:
N/A
Principal Investigator
 Samim Anghie
 Senior Research Engineer
 () -
Business Contact
 NILS J. DIAZ
Title: PRESIDENT & PRINCIPAL ENGINEER
Phone: () -
Research Institution
N/A
Abstract
THE PROGRAM PROPOSED HEREIN INVOLVES ANALYTICAL AND EXPERIMENTAL RESEARCH TO CAREFULLY EVALUATE AND FURTHER DEVELOP THE DIFFERENTIAL GAMMA SCATTERING TECHNIQUE FOR ACCURATE NON-INVASIVE DETERMINATION OF VOIDS, CRACKS, FLAWS IN MATERIALS AND THE DEFECTS SIZING AND LOCATION CAPABILITIES OF THIS METHOD. THIS NEW DEVICE, WHICH WE HAVE TERMED "DIFFERENTIAL GAMMA SCATTERING SPECTRUM PROBE (DGSSP)," IS BASED ON THE DETECTION AND HIGH-RESOLUTION ENERGY DISCRIMINATION OF THE SCATTERED PHOTON FIELD EMERGING FROM AN OBJECT WHICH IS ILLUMINATED BY A BEAM FROM A SUITABLY COLLIMATED MONOENERGETIC GAMMA-RAY SOURCE. SUBTRACTION OF THE SCATTERED SPECTRUM FROM A DEFECTIVE SAMPLE AND THE SCATTERED SPECTRUM FROM A SIMILAR BUT INTACT SAMPLE RESULTS IN A DESCRETE PEAK-SHAPE SPECTRUM WHICH IS TERMED "DIFFERENTIAL GAMMA SCATTERING SPECTRUM (DGSS)". THE LOCATION OF FLAW (OR FLAWS) IS INDICATED BY THE POSITION OF THE PEAK (OR PEAKS) IN THE DGSS AND THE SIZE OF THE FLAW IS PROPORTIONAL TO THE AREA UNDER THE PEAK. IT IS THIS UNIQUE CHARACTERISTIC FOR A DGSS PROBE WHICH ACCOUNTS FOR THE NOVELTY OF THIS CONCEPT AND LEADS TO NOTED SIGNIFICANT ADVANTAGES OVER PREVIOUS ULTRASONIC, GAMMA OR X-RAY TRANSMISSION OR SCATTERING METHODS.

* information listed above is at the time of submission.

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