Error estimation of nanoindentation mechanical properties near a dissimilar interface via finite element analysis and analytical solution methods
Identifieur interne : 000B50 ( Istex/Curation ); précédent : 000B49; suivant : 000B51Error estimation of nanoindentation mechanical properties near a dissimilar interface via finite element analysis and analytical solution methods
Auteurs : Y. Zhao [États-Unis] ; T. C. Ovaert [États-Unis]Source :
- Journal of Materials Research [ 0884-2914 ] ; 2010-12.
Abstract
Nanoindentation methods are well suited for probing the mechanical properties of a heterogeneous surface, since the probe size and contact volumes are small and localized. However, the nanoindentation method may introduce errors in the computed mechanical properties when indenting near the interface between two materials having significantly different mechanical properties. Here we examine the case where a soft material is loaded in close proximity to an interface of higher modulus, such as the case when indenting bone near a metallic implant. The results are derived from both an approximate analytical quarter space solution and a finite element model, and used to estimate the error in indentation-determined elastic modulus as a function of the distance from the apex of contact to the dissimilar interface, for both Berkovich and spherical indenter geometries. Sample data reveal the potential errors in mechanical property determination that can occur when indenting near an interface having higher stiffness, or when characterizing strongly heterogeneous materials. The results suggest that caution should be used when interpreting results in the near-interfacial region.
Url:
DOI: 10.1557/jmr.2010.0295
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Ovaert</name><affiliation wicri:level="2"><mods:affiliation>Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, Indiana 46556</mods:affiliation><country xml:lang="fr">États-Unis</country><placeName><region type="state">Indiana</region></placeName><wicri:cityArea>Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame</wicri:cityArea></affiliation><affiliation wicri:level="1"><mods:affiliation>E-mail: tovaert@nd.edu</mods:affiliation><country wicri:rule="url">États-Unis</country></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:173C70C7590FBD0CE478F173558216358557C9B1</idno><date when="2010" year="2010">2010</date><idno type="doi">10.1557/jmr.2010.0295</idno><idno type="url">https://api.istex.fr/document/173C70C7590FBD0CE478F173558216358557C9B1/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">000B50</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">000B50</idno><idno type="wicri:Area/Istex/Curation">000B50</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a">Error estimation of nanoindentation mechanical properties near a dissimilar interface via finite element analysis and analytical solution methods</title><author><name sortKey="Zhao, Y" sort="Zhao, Y" uniqKey="Zhao Y" first="Y." last="Zhao">Y. Zhao</name><affiliation wicri:level="2"><mods:affiliation>Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, Indiana 46556</mods:affiliation><country xml:lang="fr">États-Unis</country><placeName><region type="state">Indiana</region></placeName><wicri:cityArea>Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame</wicri:cityArea></affiliation></author><author><name sortKey="Ovaert, T C" sort="Ovaert, T C" uniqKey="Ovaert T" first="T. C." last="Ovaert">T. C. Ovaert</name><affiliation wicri:level="2"><mods:affiliation>Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, Indiana 46556</mods:affiliation><country xml:lang="fr">États-Unis</country><placeName><region type="state">Indiana</region></placeName><wicri:cityArea>Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame</wicri:cityArea></affiliation><affiliation wicri:level="1"><mods:affiliation>E-mail: tovaert@nd.edu</mods:affiliation><country wicri:rule="url">États-Unis</country></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of Materials Research</title><title level="j" type="abbrev">J. Mater. Res.</title><idno type="ISSN">0884-2914</idno><idno type="eISSN">2044-5326</idno><imprint><publisher>Cambridge University Press</publisher><pubPlace>New York, USA</pubPlace><date type="published" when="2010-12">2010-12</date><biblScope unit="volume">25</biblScope><biblScope unit="issue">12</biblScope><biblScope unit="page" from="2308">2308</biblScope><biblScope unit="page" to="2316">2316</biblScope></imprint><idno type="ISSN">0884-2914</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0884-2914</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract">Nanoindentation methods are well suited for probing the mechanical properties of a heterogeneous surface, since the probe size and contact volumes are small and localized. However, the nanoindentation method may introduce errors in the computed mechanical properties when indenting near the interface between two materials having significantly different mechanical properties. Here we examine the case where a soft material is loaded in close proximity to an interface of higher modulus, such as the case when indenting bone near a metallic implant. The results are derived from both an approximate analytical quarter space solution and a finite element model, and used to estimate the error in indentation-determined elastic modulus as a function of the distance from the apex of contact to the dissimilar interface, for both Berkovich and spherical indenter geometries. Sample data reveal the potential errors in mechanical property determination that can occur when indenting near an interface having higher stiffness, or when characterizing strongly heterogeneous materials. The results suggest that caution should be used when interpreting results in the near-interfacial region.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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