Ensures that testing data is traceable to national standards.
A: Always refer to the specific test method standard (e.g., ASTM E8, D638, etc.). Many test methods will explicitly state the required extensometer class. If not specified, consult with your quality manager or the party requesting the testing.
ASTM E83 is a standard practice established by ASTM International that outlines the procedures for the .
Verification must be performed by an accredited calibration technician, typically using a specialized micrometer fixture known as an . The calibration apparatus itself must be traceable to a national standards institute, such as NIST (National Institute of Standards and Technology). Step-by-Step Verification Workflow astm e83 pdf
A: Yes, provided you have verified the extensometer to the highest class required. If an extensometer is verified as Class B-1, it can be used for applications requiring Class B-2, C, D, or E, but not for Class A applications which require higher accuracy.
: It applies to both contacting and non-contacting (optical/video) extensometers and is compatible with both SI and US customary units because strain is a dimensionless quantity. Recent Updates (ASTM E83-23/25)
Furthermore, for laboratories seeking to accreditation, a valid calibration certificate stating compliance with ASTM E83 is often a mandatory piece of evidence for technical competence. Finally, always use the latest version of the standard (currently E83-25) and download it directly from a legitimate source to ensure you have the correct and legally authoritative document. Ensures that testing data is traceable to national standards
This comprehensive guide explores the structural importance of ASTM E83, how extensometers are classified, the verification process, and how to utilize documentation like the to maintain compliance in your testing laboratory. What is ASTM E83?
"I need time on the laser extensometer in the grad wing," she said. "And I need to redo my verification runs per E83, section 7.2.1."
globally recognized standard practice for the verification and classification of extensometer systems If not specified, consult with your quality manager
It emphasizes the importance of environmental controls (lighting, stability) to maintain the required class. Conclusion
The technician cycles the extensometer through its full working range several times to eliminate mechanical hysteresis and ensure stable electronic seating.
