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Spherical Indentation Testing of Polymers at Various Temperatures

Published online by Cambridge University Press:  21 March 2011

Vincent D. Jardret ,
Pierre Morel  and
Nicolas Conté
Vincent D. Jardret
Affiliation:
MTS Nano Instruments Innovation Center, 1001 Larson Drive, Oak Ridge, Tennessee
Pierre Morel
Affiliation:
University of Tennessee, Knoxville, Tennessee.
Nicolas Conté
Affiliation:
University of Tennessee, Knoxville, Tennessee.
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Abstract

Contact mechanics for indentation testing with spherical indenter is very attractive. Numerous projects have established equations to define strain and stress distribution in order to obtain stress-strain relationship from a single indentation experiment. Also a large number of studies have focused on metallic materials with the objective of estimating the yield point.

The subject of this work is to analyze the behavior of various polymeric materials during spherical indentation testing at various temperature in order to observe the relationship between the indentation behavior and compression stress-strain behavior of the same materials as a function of temperature. Thermal effects on the indentation data are used to understand the actual effects of the mechanical properties on the indentation behavior. In addition to the load, displacement, and frequency specific stiffness information, topographic analysis of the residual indentation print is used to accurately estimate the contact area, therefore, validate the indentation models for contact depth calculations using spherical indentation. Results presented in this article include spherical indentation data obtained on PMMA and Polycarbonate over a range of temperature from 5°C to l00°C.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 695: Symposium L – Thin Films: Stresses and Mechanical Properties IX , 2001 , L5.8.1
Copyright
Copyright © Materials Research Society 2002

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References

REFERENCES

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