This article is provided for educational and reference purposes. For regulatory compliance and commercial use, always refer directly to the current official ASTM E83 PDF purchased from an authorized distributor.
The standard defines six distinct classes based on the in strain measurement:
This is where comes in. As the globally recognized standard for verifying and classifying extensometer systems, it ensures that these critical measurement tools perform accurately under tension and compression testing conditions. What is ASTM E83?
When an extensometer is verified, it must meet two conditions: astm e83 pdf
The structural sensing device (the clips, arms, or optical sensors) The electronics (signal conditioners and amplifiers) The data acquisition software or readout display
When using ASTM E83, it's important to keep several key points in mind. First, the standard explicitly excludes bonded resistance strain gauges that are directly glued to a specimen, which must be handled by a different procedure (ASTM E251). Secondly, an extensometer may achieve a certain classification, such as Class B-1, for small strains but may only be rated for a lower class, like Class C, at larger strains, so it is critical to verify the valid range of your specific system.
What (metals, plastics, composites) are you testing? This article is provided for educational and reference
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Measure the reflection of a laser beam off reflective tape targets affixed to the material.
| | Details | | :--- | :--- | | Full Title | Standard Practice for Verification and Classification of Extensometer Systems | | Current Edition | ASTM E83-25 (published June 2025) | | Superseded Editions | E83-23, E83-16, E83-10, E83-00e1, E83-98, E83-90, and earlier | | Pages (Current) | 18 pages | | File Size (PDF) | Approx. 610 KB (standard); 1.2 MB (Redline) | | DOI | 10.1520/E0083-25 | | ICS Code | 19.060 (Mechanical testing) | | ASTM Committee | E28 (Mechanical Testing) | | Subcommittee | E28.01 (Calibration of Mechanical Testing Machines and Apparatus) | | Price (Typical) | Approximately USD $60–85 depending on source and format | | Primary Language | English; some translated versions exist | | Official Publisher | ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA, 19428-2959 USA | As the globally recognized standard for verifying and
You may inadvertently download an obsolete version of the standard, causing your laboratory to fail compliance checks.
The exact methodology for executing calibration runs.
Extensometer systems should be verified at least once every 12 months, or immediately following any shock, repair, or modification.