DIGITALLY-ANALYZED SHADOW MOIRE FRINGE PATTERNS

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$57,857.00
Award Year:
1986
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
4105
Agency Tracking Number:
4105
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Rr 4 - Box 424x, Lexington Park, MD, 20653
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
A W ERNEST
(301) 863-5499
Business Contact:
() -
Research Institution:
n/a
Abstract
AN IMPERFECT SPOT-WELDED JOINT WILL LOCALLY CHANGE THE MECHANICAL PROPERTIES AND PRODUCE AN ANOMALOUS STRUCTURAL RESPONSE. THIS LOCAL CHANGE IN THE DISPLACEMENT FIELD WILL BE OBSERVED, RECORDED AND ANALYZED USING THE NEW APPROACH, PROPOSED HERE. A COMBINATION OF A SHADOW-MOIRE USED FOR FIELD ACQUISITION OF SURFACE DISPLACEMENTS TOPOGRAPHY AND DIGITAL IMAGE ANALYSIS. A SOPHISTICATED SOFTWRE WILL BE DEVELOPED TO ANALYZE THE RECORDED SURFACE-DISPLACEMENT PATTERN, AND COMPARE TO THE "NORMAL" DISPLACEMENT BEHAVIOR. TO ASCERTAIN THE FEASBILITY AND MERITS OF THE PROPOSED APPROACH, SPECIMEN CONTAINING BAD WELDS WILL BE EXAMINED AND DEFECT DETECTION ABILITY EVALUATED.

* information listed above is at the time of submission.

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