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KOVÁŘ, J. FUIS, V. ČTVRTLÍK, R. TOMÁŠTÍK, J.
Originální název
The discrepancy between the indentation curves obtained by the finite element method calculation with a Berkovich and a conical indenter
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
angličtina
Originální abstrakt
Nanoindentation is an experimental technique used for the determination of Young modulus. The commonly used Oliver-Pharr analysis based on the assumption of the equivalence of indentation curves obtained with a Berkovich and a conical indenter is employed. Nevertheless, a break-down of this equivalence in projected area between the pyramidal and conical geometry was found. This discrepancy leads to an overestimation of Young modulus and needs to be corrected with coefficient β. It corrects the difference between Young modulus from the conical and the Berkovich indentation but cannot correct the indentation curves. This paper aims at the FEM study of modelling of the nanoindentation test, the influence of the Oliver-Pharr analysis assumptions, the comparison and unification of the different values of β for the Berkovich and the conical indentation with a rigid and a diamond indenter, the correction of the indentation curves, and the explanation of the differences between the FEM calculated and experimentally measured indentation curves.
Klíčová slova
nanoindentation, computing, elastic properties, fused silica, Ni
Autoři
KOVÁŘ, J.; FUIS, V.; ČTVRTLÍK, R.; TOMÁŠTÍK, J.
Vydáno
9. 5. 2022
Nakladatel
Springer
Místo
Heidelberg, Germany
ISSN
0884-2914
Periodikum
JOURNAL OF MATERIALS RESEARCH
Ročník
37
Číslo
10
Stát
Spojené státy americké
Strany od
1750
Strany do
1761
Strany počet
12
URL
https://link.springer.com/article/10.1557/s43578-022-00574-6
BibTex
@article{BUT177915, author="Jaroslav {Kovář} and Vladimír {Fuis} and Radim {Čtvrtlík} and Jan {Tomáštík}", title="The discrepancy between the indentation curves obtained by the finite element method calculation with a Berkovich and a conical indenter", journal="JOURNAL OF MATERIALS RESEARCH", year="2022", volume="37", number="10", pages="1750--1761", doi="10.1557/s43578-022-00574-6", issn="0884-2914", url="https://link.springer.com/article/10.1557/s43578-022-00574-6" }