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A unified correlation model describing global properties at elastoplastic sharp indentation contact
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.).ORCID iD: 0000-0001-7674-8582
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.).ORCID iD: 0000-0001-6232-8819
2016 (English)In: Tribology International, ISSN 0301-679X, E-ISSN 1879-2464, Vol. 103, p. 252-260Article in journal (Refereed) Published
Abstract [en]

The correlation of sharp indentation testing is analyzed and discussed based on present and previous numerical findings. In particular, correlation of two global indentation properties, hardness and relative contact area, at sharp indentation of classical elastic-plastic materials is discussed in detail. It is shown that the results cannot in general, and in particular at high strain hardening, be correlated accurately using a single parameter, comprising both geometrical and mechanical properties, with the uniaxial stress-strain curve represented by the flow stress at a representative value on the effective plastic strain. Instead, also the level of the plastic hardening must be considered. Based on this finding, a unified model for correlation of global properties is presented for cone indentation of elastoplastic materials.

Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 103, p. 252-260
Keywords [en]
Sharp indentation, Elastic-plastic materials, Correlation, Indentation hardness
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-196071DOI: 10.1016/j.triboint.2016.07.005ISI: 000384777100026Scopus ID: 2-s2.0-84979516575OAI: oai:DiVA.org:kth-196071DiVA, id: diva2:1047125
Note

QC 20161116

Available from: 2016-11-16 Created: 2016-11-11 Last updated: 2017-11-29Bibliographically approved

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