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Publication Citation: An Empirical Approach to Determining Rockwell Hardness Measurement Uncertainty

NIST Authors in Bold

Author(s): Samuel R. Low III; Walter S. Liggett Jr;
Title: An Empirical Approach to Determining Rockwell Hardness Measurement Uncertainty
Published: July 01, 2002
Abstract: Characteristics of the empirically developed Rockwell hardness test make it difficult to determine measurement uncertainty using methods traditionally applied to other metrological measurements. An empirical approach to determining Rockwell hardness uncertainty has been developed, which provided a method based on the familiar procedures and practices of Rockwell hardness testing laboratories. The approach views the hardness machine and indenter as a single measuring device, and considers uncertainties associated with the overall measurement performance of the Rockwell hardness machine with respect to reference standards. The approach also considers the uncertainty contributions associated with the machine repeatability and the usage of the machine over time with varying environmental conditions and with different operators.
Conference: IMEKO TC
Proceedings: Proceedings of the IMEKO TC3/TC5/TC20 International Conference
Dates: September 23-27, 2002
Keywords: hardness,Rockwell hardness,uncertainty
Research Areas: