I would like know some differences between the contact mechanics of the thin films vs bulk materials. What is the better contact mechanics to evaluate UHMWPE with a thickness of 1 mm in a ball-on-disk tribometer?
Can you specify your problem a bit more? As I understand it, you have some bulk material with an UHMWPE "coating" of 1mm thickness?
In general, the relevant quantity is the thickness of the surface layer compared to the contact radius: If the layer thickness is large (compared to the contact radius), the bulk material is more or less irrelevant; if the thickness is much smaller than the contact radius, most of the contact load is carried by the bulk material, the layer mainly influences the tribological characteristics (friction coefficient, wear resistance and so on); if the thickness is of the same order as the contact radius you need to refer to the contact mechanics of layered materials.
Dear Emanual Willert
Thanks a lot for you answer, was good for clarify some doubt and know how evaluate the experiment that I will need develop.
In my experiment the sample is UHMWPE thin film with nanoparticles.
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