Abstract
AbstractIn the micro-hardness range of the load, the measurement is complicated by the occurrence of the Indentation Size Effect (ISE) – the measured value of the micro-hardness is affected by the value of the applied load. The paper aims to study the influence of the automatic testers on the character type and size of the ISE. Ten testers and five standard reference blocks were involved in the “round-robin test”. Parameters of the ISE were evaluated using Meyer’s, Hays–Kendall, and PSR methods and also by statistical methods (ANOVA,t-test, regression, and cluster analysis). Despite the assumptions, a statistically significant impact of the hardness tester was found not only on the measured value but also on the character and size of ISE.
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