Real-time video extensometer
AssigneeIllinois Tool Works Inc.
InventorsMartin A. Peterson, Daniel Dina
Life of this patent
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Abstract
This disclosure relates to a real-time video extensometer. Typically, the apparatus of the disclosure combines the image source, data processing and electrical output on to a single processing board in order to achieve high frequency images and low latency times on data flow. Further, the video processing engine processes the image on a pixel basis and updating the output the intermediate extension/strain result so that after receipt of the final image pixel, a final extension/strain value is achieved and immediately output for evaluation.
Claims10
An extensometer for measuring extension/strain on a testing specimen, comprising:
- an imaging device for generating an image of a testing specimen which is subjected to a stress-inducing load;
- a calculating device, including a microprocessor and a field programmable gate array, for receiving the image of a testing specimen, determining movement of targets on a testing specimen and determining extension/strain from the determined movement of targets, the video device and the calculating device, including the microprocessor and the field programmable gate array, being on a same circuit board;
- and
- an output device for outputting the determined extension/strain in real-time.
Dependencies are inferred from the claim text.