Brice, L; Davis, F; Crawshaw, A H (2003) Uncertainty in hardness measurement. NPL Report. CMAM 87

Text CMAM87.pdf Download (2MB)

Abstract

This report details work into the factors contributing to uncertainty in measured hardness, including a literature review of the factors contributing to uncertainty in hardness metrology, and their complex interactions. In many areas, contradictions existed and highlighted the need for further research. The effects of the indenter characteristics were identified as major factors contributing to the uncertainty in measured hardness, so work was done to determine these influences.
This work concentrated on the main characteristics of Vickers and Rockwell indenters, investigating how they affected the measured hardness across a range of hardnesses.
With the results obtained, the effects caused by the different characteristics were evaluated and the more significant were identified.
The work described was carried out under Deliverable 2.3.5 of the National Measurement System’s Mass Programme 1999-2002, funded by the Department of Trade and Industry.

Item Type:	Report/Guide (NPL Report)
NPL Report No.:	CMAM 87
Subjects:	Engineering Measurements Engineering Measurements > Mass, Force, Pressure
Last Modified:	02 Feb 2018 13:16
URI:	https://eprintspublications.npl.co.uk/id/eprint/2615