Factors influencing hardness-testing measurements: In total 44 factors separated to groups, explanation how avoid their influence

Josífek Martin - Struers GmbH (Czech Republic)

There are 44 factors, which govern precision of hardness measurement. It is possible to recognise main influences of hardness testing factors and split them up into groups reflecting their source:
o influence of equipment
o influence of methodology
o influence of Material
o influence of Operator
o influence of Environment
These main groups have various causes and can be further categorised. In case we know the cause, which influence our measurement, we can eliminate it. The aim of this presentation is to show all the factors, which influence hardness measurement and to show how to overcome those factors.

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