Thickness correction for video extensometer systems and methods

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United States of America Patent

PATENT NO 11867668
SERIAL NO

16915586

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The present disclosure describes systems and methods to correct for perspective calibration variations of a variable thickness specimen with a single camera extensometer in a video extensometer system. In some examples, the systems and methods compensate for a change between a reference characteristic, such as a calibration plane, and an actual physical characteristic, such as a testing plane associated with a surface of a test specimen, during a testing operation. In some examples, a correction value is applied to an output (e.g., measured dimensions of the imaged test specimen) to compensate for the difference between the reference characteristic and the physical characteristic.

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Patent Owner(s)

Patent OwnerAddress
ILLINOIS TOOL WORKS INC155 HARLEM AVENUE GLENVIEW IL 60025

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ashman, Michael Natick, US 4 1
Hoehl, Christian J Dinslaken, DE 4 2
Riddick, Adrian Charles Medfield, US 3 1
Salerno, Nicholas Francisco Brighton, US 2 1

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