Astm E83 Pdf -

ASTM E83 is a standard practice that provides procedures for the calibration and classification of extensometer systems. An extensometer system includes the measuring device itself (the sensor or clips), the data acquisition system, and any electronic displays or software used to record strain data.

The standard ensures that these systems measure changes in length with a specified degree of accuracy over a designated range. Why is ASTM E83 Verification Important? astm e83 pdf

The extensometer, calibrator, and environment must sit in a temperature-controlled room (typically ) long enough to eliminate thermal expansion errors. ASTM E83 is a standard practice that provides

For instance, when testing metals for elasticity (modulus), Class B-1 or B-2 is commonly required. Key Components of the ASTM E83 Verification Procedure Why is ASTM E83 Verification Important

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.

It does not cover bonded resistance strain gages, which are instead addressed under Key Performance Classes