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STEPPED FREQUENCY ULTRASONIC HOLOGRAPHY FOR FLAW CHARACT.

Award Information

Agency:
Department of Energy
Branch:
N/A
Award ID:
401
Program Year/Program:
1984 / SBIR
Agency Tracking Number:
401
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Sigma Research Corp
234 Littleton Rd - Ste 2e Westford, MA 01886
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 2
Fiscal Year: 1984
Title: STEPPED FREQUENCY ULTRASONIC HOLOGRAPHY FOR FLAW CHARACT.
Agency: DOE
Contract: N/A
Award Amount: $455,638.00
 

Abstract:

ULTRASONIC IMAGING SYSTEMS OF VARIOUS TYPES ARE PRESENTLY UNDER DEVELOPMENT FOR NONDESTRUCTIVE TESTING. ALL OF THEM REQUIRE A TWO-DIMENSIONAL APERTURE TO BE SCANNED BY A TRANSDUCER, OR FILLED WITH MULTIPLE TRANSDUCERS. A PARTICULARLY INTERESTING SYSTEM IS ONE BASED ON HOLOGRAPHIC PRINCIPLES. IN MANY REACTOR LOCATIONS IT IS VERY DIFFICULT TO IMPLEMENT EITHER A SCANNER OR A LARGE ARRAY OF TRANSDUCERS. RECENT WORK HAS SHOWN THAT UNDER SOME CIRCUMSTANCES IT IS POSSIBLE TO USE FREQUENCY SWEEPING TO GENERATE A SYNTHETIC APERTURE IN ONE DIMENSION. THIS ALLOWSA SINGLE DIMENSIONAL CROSS-SECTIONAL IMAGE TO BE MADE FROM ONE FIXED TRANSDUCER, OR A TWO-DIMENSIONAL IMAGE FROM A LINE ARRAY OF TRANSDUCERS. IN THIS RESEARCH, WE WILL ADAPT THE SWEPT FREQUENCY METHOD TO OUR STANDARD HOLOGRAPHIC SYSTEM TO ACHIEVE THIS TYPE OF IMAGING.

Principal Investigator:

B.p. Hidelbrand

Business Contact:

Small Business Information at Submission:

Sigma Research, Inc.
565 Industry Drive Seattle, WA 98188

EIN/Tax ID:
DUNS: N/A
Number of Employees: N/A
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No