The current state of metrological support for static tension

Abstract

The article presents a review and comparison of the requirements of the International Standard ISO 6892-1:2019 and the Interstate Standard GOST 1497-84 establishing a method for measuring the mechanical properties of metals under static tension.A comparative analysis of the requirements for metrological support of static tension tests for parameters that affect the measuring results of mechanical properties, including test conditions, was carried out.The main problems of applying GOST 1497-84 are highlighted, which require its harmonization with the International Standard ISO 6892-1:2019 and improvement of the metrological support system for static tension tests in the Russian Federation.The scheme for ensuring the metrological traceability during static tension testing of the measuring results of mechanical properties to the primary reference measurement procedure, which requires the development of certified reference materials (CRMs) for various test units, was considered.The authors believe that the proposed systematic approach to ensuring the uniformity of measurements of the characteristics of mechanical properties, using the primary reference methodology as a basis for comparison, will allow laboratories to ensure the reliability of the measuring results of mechanical properties, using not only intermediate precision measures, but also the correctness.