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An experimental device for depth-sensing indentation tests in millimeter-scale

Published online by Cambridge University Press:  31 January 2011

N. Huber  and
Ch. Tsakmakis
N. Huber
Affiliation:
Universität Karlsruhe (TH), Institute for Reliability and Failure Analysis, Kaiserstr. 12, Postfach 6980, D-76128 Karlsruhe,Germany
Ch. Tsakmakis
Affiliation:
Forschungszentrum Karlsruhe, Institute for Materials Research II (IMF II), Postfach 3640, D-76021 Karlsruhe, Germany, and Technische Hochschule Darmstadt, Institute of Mechanics 1, Hochschulstrasse 1, D-64289 Darmstadt, Germany
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Abstract

A device for spherical indentation using a tip radius of 2 mm and loads up to 10 kN is presented. This facility can be applied, for example, to verify methods for characterizing the behavior of materials exhibiting homogeneous and isotropic constitutive properties. The indentation device can be driven both load- and depth-controlled. The accuracy of measurements is about 1 N for load and 0.2 μm for depth at a total depth of 200 μm. Two materials, an austenitic steel and an aluminum alloy, have been tested and their Young's moduli have been determined. For determining Young's modulus from spherical indentation data, use is made of a so-called Lt method, which had been developed in Ref. 1. Results obtained in this way are compared with corresponding values measured by one-dimensional homogeneous tensile experiments.

Type
Articles
Information
Journal of Materials Research , Volume 13 , Issue 6 , June 1998 , pp. 1650 - 1655
Copyright
Copyright © Materials Research Society 1998

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References

REFERENCES

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