Hostname: page-component-cd9895bd7-8ctnn Total loading time: 0 Render date: 2024-12-28T00:30:42.324Z Has data issue: false hasContentIssue false
  • English
  • Français

Analytical and experimental resolutions in the duality of mechanical property extractions from instrumented indentation experiments: Comments on “On determination of material parameters from loading and unloading responses in nanoindentation with a single sharp indenter” by L. Wang and S.I. Rokhlin [J. Mater. Res. 21, 995, (2006)]

Published online by Cambridge University Press:  03 March 2011

O. Casals  and
J. Alcalá
O. Casals
Affiliation:
Department of Materials Science and Metallurgical Engineering, Escola Tècnica Superior d’Enginyeria Industrial de Barcelona (E.T.S.E.I.B.), Universitat Politècnica de Catalunya, Barcelona 08028, Spain
J. Alcalá*
Affiliation:
Department of Materials Science and Metallurgical Engineering, Escola Tècnica Superior d’ Enginyeria Industrial de Barcelona (E.T.S.E.I.B.), Universitat Politècnica de Catalunya, Barcelona 08028, Spain; and Faculty of Aerospace Engineering, Technion (Israel Institute of Technology), Haifa 32000, Israel
*
a) Address all correspondence to this author. e-mail: jorge.alcala@upc.es
Get access

Abstract

A controversial issue in mechanical property extractions from instrumented indentation applied load (P)–penetration depth (hs) curves concerns the possibility of finding more than one solid that essentially exhibits the same contact response. By recourse to finite element simulations of elastic-power law strain hardening solids, it was shown that for both the elasto-plastic and the fully plastic contact regimes it becomes possible to find an arbitrary number of solids whose P-hs curves are visually similar [L. Wang and S.I. Rokhlin, J. Mater. Res. 21, 995 (2006)]. Although this assertion supports prior findings [e.g., C.M. Cheng and Y.T. Cheng, J. Mater. Res. 14, 3493 (1999); K.K. Tho et al., Mater. Sci. Eng.A 390, 202 (2005); and J. Alkorta et al., J. Mater. Res.20, 432 (2005)], it apparently contradicts the work by Casals and Alcalá in which, through similar computational procedures and constitutive theory, it was shown that there can be “only” two solids with strictly the same P-hs curve [O. Casals and J. Alcalá, Acta Mater.53, 3545 (2005)]. The purpose of this comment is to reconcile the different views on the multiplicity of inferred properties that can be extracted from a single P-hs curve, as well as to address the issue of whether visually similar P-hs curves can be taken to be statistically identical both from analytical and experimental standpoints. Some considerations are also given regarding experiments performed with dual indenters.

Keywords

Elastic propertiesHardnessNanoscale
Type
Commentary
Information
Journal of Materials Research , Volume 22 , Issue 5 , May 2007 , pp. 1138 - 1144
Copyright
Copyright © Materials Research Society 2007

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1Casals, O. and Alcalá, J.: The duality in mechanical property extractions from Vickers and Berkovich instrumented indentation experiments. Acta Mater. 53, 3545 (2005).CrossRefGoogle Scholar
2Wang, L. and Rokhlin, S.I.: On the determination of material parameters from loading and unloading responses in nanoindentation with a single sharp indenter. J. Mater. Res. 21, 995 (2006).Google Scholar
3Cheng, C.M. and Cheng, Y.T.: Can stress–strain relations be obtained from indentation curves using conical and pyramidal indenters? J. Mater. Res. 14, 3493 (1999).CrossRefGoogle Scholar
4Tho, K.K., Swaddiwudhipond, S., Liu, Z.S., and Zeng, K.: Simulation of instrumented indentation and material characterization. Mater. Sci. Eng., A 390, 202 (2005).CrossRefGoogle Scholar
5Alkorta, J., Martinez-Esnaola, J.M., and Sevillano, J.G.: Absence of one-to-one correspondence between elastoplastic properties and sharp-indentation load-penetration data. J. Mater. Res. 20, 432 (2005).Google Scholar
6Taylor, J.R.: An Introduction to Error Analysis (Mill Valley, University Science Books, Oxford University Press, Oxford, UK, 1982).Google Scholar
7Bucaille, J.L., Stauss, S., Felder, E., and Michler, J.: Determination of plastic properties of metals by instrumented indentation using different sharp indenters. Acta Mater. 51, 1663 (2003).CrossRefGoogle Scholar
8Swaddiwudhipong, S., Tho, K.K., Liu, Z.S., and Zeng, K.: Material characterization based on dual indenters. Int. J. Solids Struct. 42, 69 (2005).CrossRefGoogle Scholar
9Mata, M., Anglada, M., and Alcalá, J.: A hardness equation for sharp indentation of elastic-power-law strain hardening materials. Philos. Mag. A 82, 1831 (2002).CrossRefGoogle Scholar