Measurement uncertainties in mechanical tests on metallic materials. The evaluation of uncertainties in tensile testing

Measurement uncertainties in mechanical tests on metallic materials. The evaluation of uncertainties in tensile testing

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1   Scope

This document describes how the evaluation of uncertainties in tensile tests can be obtained from tests at room temperature (ISO 6892‑1) or elevated temperature (ISO 6892‑2).
This document reports how it can be applied to tests performed at ambient and elevated temperatures under axial loading conditions with a digital acquisition of force and displacement.

NOTE 1 As CWA 15261‑21 and UNCERT CoP 07[1] reports, the tests are assumed to run continuously without interruptions on test pieces that have uniform gauge lengths.

NOTE 2 Annex C gives for information an indication of the typical scatter in tensile test results for a variety of materials that have been reported during laboratory inter-comparison exercises.