This paper evaluates the uncertainty in the hardness measurements using metal Brinell hardness testers. The main sources of measurement uncertainty are investigated and the calculations of combined and expanded uncertainties is conducted for metal Brinell hardness measurements.%本文对金属布氏硬度测量不确定度进行了评定,分析了各测量不确定度主要来源,并对各个分量进行了量化,求出了合成不确定度和扩展不确定度.
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