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Some basic equations for the next generation of surface testers solving the problem of pileup, sink-in, and making area-function calibration obsolete

Published online by Cambridge University Press:  31 January 2011

Norbert Schwarzer
Norbert Schwarzer*
Affiliation:
Saxonian Institute of Surface Mechanics, Tankow 1, 18569 Ummanz, Germany
*
a) Address all correspondence to this author. e-mail: n.schwarzer@siomec.de
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Abstract

In the present paper the formulas for the stiffnesses of a new and more general surface tester concept are given and discussed. The concept is based on the idea that the next generation of surface testers will provide the means to use all degrees of freedom of movement a probe on a sample surface could perform. Thus, in addition to the ordinary normal stiffness, lateral and tilting stiffness are measured, as well as twisting stiffness, and then used in the subsequent parameter determination of the investigated materials. It is shown in the paper that such a concept would not only solve classical problems such as “pileup” and “sink-in” completely, but it would also supersede the need of area-function calibration for the indenter tips and allow direct measurement of local intrinsic and residual stresses, anisotropy, and many other things, too.

Keywords

AdhesionElastic propertiesNanoindentation
Type
Articles
Information
Journal of Materials Research , Volume 24 , Issue 3 , March 2009 , pp. 1032 - 1036
Copyright
Copyright © Materials Research Society 2009

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References

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