Calibration verification
First Claim
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1. A method for verifying calibration of a materials testing system, the method comprising:
- obtaining first information that indicates, at least, an energy characteristic of a calibration specimen, the energy characteristic defining a relationship between force and distance for the calibration specimen, wherein the calibration specimen is comprised of a material with at least a threshold level of elasticity;
receiving, at a computational unit, results from a test run on the calibration specimen by the materials testing system, wherein the results are based on force and distance measurements taken by the materials testing system during the test, the test applying one or more loads to the calibration specimen that are within an elastic region of the material comprising the calibration specimen;
determining, by the computational unit, whether one or more measurement devices of the materials testing system are calibrated within a threshold tolerance based on a comparison of (i) the energy characteristic of the calibration specimen and (ii) the results of the test run on the calibration specimen by the materials testing system; and
outputting, by the computational unit, second information that indicates whether the one or more measurement devices of the materials testing system are calibrated within the threshold tolerance.
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Abstract
This document generally describes technology to verify the calibration of a materials testing system, such as a compact tension testing system. The calibration of a materials testing system can be verified based on the results generated from the materials testing system running one or more tests on a calibration specimen with one or more known characteristics.
30 Citations
20 Claims
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1. A method for verifying calibration of a materials testing system, the method comprising:
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obtaining first information that indicates, at least, an energy characteristic of a calibration specimen, the energy characteristic defining a relationship between force and distance for the calibration specimen, wherein the calibration specimen is comprised of a material with at least a threshold level of elasticity; receiving, at a computational unit, results from a test run on the calibration specimen by the materials testing system, wherein the results are based on force and distance measurements taken by the materials testing system during the test, the test applying one or more loads to the calibration specimen that are within an elastic region of the material comprising the calibration specimen; determining, by the computational unit, whether one or more measurement devices of the materials testing system are calibrated within a threshold tolerance based on a comparison of (i) the energy characteristic of the calibration specimen and (ii) the results of the test run on the calibration specimen by the materials testing system; and outputting, by the computational unit, second information that indicates whether the one or more measurement devices of the materials testing system are calibrated within the threshold tolerance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An apparatus for verifying calibration of a materials testing system, the apparatus comprising:
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a calibration specimen that sized and shaped to be fitted into the materials testing system for application of one or more loads; a first pair of physical elements that define a first span across a portion of the calibration specimen that, as the one or more loads are applied to the calibration specimen by the materials testing system, will have a variable distance; and a plurality of second pairs of physical elements that define a plurality of second spans across portions of the calibration specimen that have fixed-distances. - View Dependent Claims (14, 15, 16)
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17. A system for determining whether a materials testing system is calibrated, the system comprising:
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a calibration specimen that is sized and shaped for testing by the materials testing system, the calibration specimen being comprised of a material with at least a threshold level of elasticity; and a computational unit that is programmed to;
i) receive results from a test run on the calibration specimen by the materials testing system, ii) determine, based on a comparison of the results and an energy characteristic for the calibration specimen, whether the materials testing system is calibrated within a threshold tolerance, and iii) output information that indicates whether the materials testing system is calibrated within the threshold tolerance,wherein the energy characteristic defines a relationship between force and distance for the calibration specimen. - View Dependent Claims (18, 19, 20)
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Specification