Gating methods for use in weld inspection systems

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United States of America Patent

PATENT NO 9759691
SERIAL NO

15133642

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Abstract

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A method for characterizing a spot weld, including acquiring a sequence of A-scans from an ultrasonic phased array, wherein the A-scans describe individual portions of a field of view of the phased array; manually applying an interface gate and a flaw gate to each individual A-scan within the sequence of A-scans; calculating a gate ratio between a maximum amplitude under the interface gate and a maximum amplitude under the flaw gate for each individual A-scan; plotting the gate ratio for each individual A-scan as a function of location within the phased array field of view to generate a weld fusion map; using a predetermined threshold to differentiate fused locations from unfused locations on the weld fusion map; and calculating predetermined weld metrics, wherein the predetermined weld metrics include area, diameter, width, length, percent fused, or combinations thereof.

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Patent Owner(s)

Patent OwnerAddress
EDISON WELDING INSTITUTE INC1250 ARTHUR E ADAMS DRIVE COLUMBUS OH 43221

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Boulware, Paul C Columbus, US 11 1051
Na, Jeong K Centerville, US 9 173
Spencer, Roger Asheville, US 5 133

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