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