NON-DESTRUCTIVE EVALUATION OF WELDED JOINTS OF BAR WOUND STATOR UTILIZING INFRARED AND THERMAL METHODS

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United States of America Patent

SERIAL NO

13240449

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Abstract

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A method and system for non-destructive evaluation of one or more welds of a stator includes activating the stator welds using an electrical current; recording radiometric thermal images of the welds over time; and analyzing a temperature-time profile of a weld to qualify the weld by one or more of estimating the size of the weld, determining if the temperature of the activated weld has exceeded a predetermined temperature at a predetermined time, or comparing the temperature-time profile of the weld to a reference. The stator may be configured as a bar wound stator. A mask may be applied to the stator to reduce reflections or emissions from non-weld thermal sources.

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Patent Owner(s)

Patent OwnerAddress
GM GLOBAL TECHNOLOGY OPERATIONS LLCP O BOX 300 DETROIT MI 48265-3000

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Agapiou, John S Rochester Hills, US 67 297
De, Souza Urban J Rochester Hills, US 16 146
Jin, Xiaoling Farmington Hills, US 7 27
Panozzo, Edward Mokena, US 5 42
Simon, Daniel L Rochester, US 10 79

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