Patent ID: 8215173

Claim:
A UT method of identifying a stuck portion of a joint between a first workpiece and a second workpiece, comprising: transmitting a primary US beam and a secondary US beam from an ultrasonic testing probe into an assembly including the first workpiece and the second workpiece wherein the primary US beam is high gain and wherein the secondary US beam is low gain; and wherein the primary and secondary US beams are fired in within milliseconds of one another; capturing a plurality of US reflections of the primary US beam and the secondary US beam; creating a high gain A-scan presentation associated with the primary US beam and creating a low gain A-scan presentation associated with the secondary US beam; identifying a low gain initial pulse representation on the low gain A-scan presentation and identifying a low gain initial pulse representation peak; allocating an interface detection gate on the high gain A-scan presentation located a gate offset distance from the low gain initial pulse representation peak to a gate opening point, wherein the interface detection gate has a gate period defined by the gate opening point and a gate closing point, and wherein the interface detection gate has a gate amplitude; and analyzing the high gain A-scan presentation within the interface detection gate and creating a stuck joint portion alert if a portion of the high gain A-scan presentation exceeds the gate amplitude within the interface detection gate.