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DEVELOPMENT OF AN EDDY-CURRENT SENSOR AND ALGORITHM FOR THREE-DIMENSIONAL QUANTITATIVE NONDESTRUCTIVE EVALUATION

Awardee

Sabbagh Associates, Inc.
4635 Morningside Dr.
Bloomington, IN, 00000
US

Award Year: 1984

UEI: N/A

HUBZone Owned: No

Woman Owned: No

Socially and Economically Disadvantaged: No

Congressional District: N/A

Tagged as:

SBIR

Phase II

Seal of the Agency: DOE

Awarding Agency

DOE

Total Award Amount: $498,917

Contract Number: N/A

Agency Tracking Number: 392

Solicitation Topic Code: N/A

Solicitation Number: N/A

Abstract

THE PROPOSED RESEARCH PROBLEM IS TO DEVELOP A SENSOR, TOGETHER WITH A MATHEMATICAL ALGORITHM, THAT WILL ALLOW THE THREE-DIMENSIONAL QUANTITATIVE EDDY-CURRENT NONDESTRUCTIVE EVALUATION OF MATERIALS AND STRUCTURES. THE APPROACH THAT WE PROPOSE IS BASED ON, AND EXTENDS, WORK ON TWO-DIMENSIONAL EDDY-CURRENT NDE THAT HAS ALREADY BEEN PERFORMED BY ANALYTICS, INC. THAT WORK IS BRIEFLY REVIEWED.THE TECHNICAL OBJECTIVES OF THE PROPOSED RESEARCH ARE: (1) DETERMINE SUITABILITY OF HALL-EFFECT PROBES FOR SENSING EDDY-CURRENTS, (2) DETEMINE OPTIMUM ARRAY OF HALL-EFFECT PROBES FOR THE SENSOR, (3) DETERMINE SUITABILITY OF DISTRIBUTED WINDINGS AND/OR "PHASED-ARRAYS" FOR SENSING, OR INDUCING, EDDY-CURRENTS, AND (4) EXTEND THE ALGORITHM FOR RECONSTRUCTING FLAWS IN TWO-DIMENSIONS TO THREE DIMENSIONS. THESE OBJECTIVES ARE MET BY ANALYZING A MODEL SENSOR, WHICH IS DESCRIBED. THE ANALYSIS IS BASED ON CERTAIN INTEGRAL RELATIONS FOR EDDY-CURRENTS. THESE INTEGRALS ARE DERIVED FROM FUNDAMENTAL ELECTROMAGNETIC THEORY, AND ARE THE FOUNDATION FOR OUR INVERSION TECHNIQUE.

Award Schedule


  1. Solicitation Year

  2. 1984
    Award Year


  3. Award Start Date


  4. Award End Date

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Research Institution

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