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What parameters are important when choosing the right UCI Probe?

There are several important parameters that shall be taken into account when selecting the UCI probe:

Minimum thickness of the object
If a coating is tested, then also the minimum thickness of the “coating“ which should correspond at least 10x the indentation depth by an indenter,
Elastic modulus of the material is important to be known, as conventional UCI devices are calibrated to low alloy steel with E around 210 GPa
Appropriate surface roughness, specific for the selected probe

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