Ivan Kozhedub Kharkiv National Air Force University (KNAFU)

Annotation: In light of the new Rockwell C hardness scale definition adopted by National Metrology Institutes (NMIs) [1], a comparison of the Hardness Rockwell and Superficial- Rockwell scales realized by National primary hardness Rockwell machines is necessary to verify the implementation of the new definition. A Technical Protocol of a Regional Metrological organization Key Comparison (RMO KC) was presented and approved at the t TC 1.6 meeting in September 2014 in Braunschweig, Germany. A Regional Key Comparison (RKC) has been chosen and the technical protocol has been prepared following the rules given by the document “Measurement comparisons in the CIPM MRA” [2].

Keywords: key comparison, hardness, Rockwell scales, National primary standards, reference blocks, measurement area, budget of uncertainty, uncertainty evaluation

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Information about the authors of publication:

• Skliarov V. V.

Reference:
Skliarov, V.V. (2015), Regional metrological organization key comparison in the field of rockwell hardness scales (progress and perspectives), Information Processing Systems, Vol. 2(127), pp. 57-60.