Detail publikace

The discrepancy between the indentation curves obtained by the finite element method calculation with a Berkovich and a conical indenter

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"
}