Standard Active Last Updated: Jun 25, 2018 Track Document
ASTM E2208-02(2018)e1

Standard Guide for Evaluating Non-Contacting Optical Strain Measurement Systems

Standard Guide for Evaluating Non-Contacting Optical Strain Measurement Systems E2208-02R18E01 ASTM|E2208-02R18E01|en-US Standard Guide for Evaluating Non-Contacting Optical Strain Measurement Systems Standard new BOS Vol. 03.01 Committee E08
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Abstract

This guide assists potential users in understanding the issues related to the accuracy of non-contacting strain measurement systems and to provide a common framework for quantitative comparison of optical systems. The output from a non-contacting optical strain and deformation measurement system is generally divided into optical data and image analysis data. Each non-contacting optical strain measurement system must be evaluated to determine reliable estimates for the accuracy of the resulting Derived Data.

Scope

1.1 The purpose of this document is to assist potential users in understanding the issues related to the accuracy of non-contacting strain measurement systems and to provide a common framework for quantitative comparison of optical systems. The output from a non-contacting optical strain and deformation measurement system is generally divided into optical data and image analysis data. Optical data contains information related to specimen strains and the image analysis process converts the encoded optical information into strain data. The enclosed document describes potential sources of error in the strain data and describes general methods for quantifying the error and estimating the accuracy of the measurements when applying non-contacting methods to the study of events for which the optical integration time is much smaller than the inverse of the maximum temporal frequency in the encoded data (that is, events that can be regarded as static during the integration time). A brief application of the approach, along with specific examples defining the various terms, is given in the Appendix.

1.2 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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Details
Book of Standards Volume: 03.01
Developed by Subcommittee: E08.03
Pages: 7
DOI: 10.1520/E2208-02R18E01
ICS Code: 17.180.30