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

Award Information
Agency:
Department of Energy
Branch
n/a
Amount:
$498,917.00
Award Year:
1984
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Agency Tracking Number:
392
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Sabbagh Associates, Inc.
2634 Round Hill Lane, Bloomington, IN, 47401
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Harold A Sabbagh
() -
Business Contact:
() -
Research Institution:
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.

* information listed above is at the time of submission.

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