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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F22%3A00565030" target="_blank" >RIV/68378271:_____/22:00565030 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388998:_____/22:00565030 RIV/61989592:15310/22:73613735 RIV/00216305:26210/22:PU144532

Výsledek na webu

<a href="https://link.springer.com/article/10.1557/s43578-022-00574-6" target="_blank" >https://link.springer.com/article/10.1557/s43578-022-00574-6</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1557/s43578-022-00574-6" target="_blank" >10.1557/s43578-022-00574-6</a>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Materials Research

ISSN

0884-2914

e-ISSN

2044-5326

Svazek periodika

37

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

1750-1761

Kód UT WoS článku

000792534400002

EID výsledku v databázi Scopus

2-s2.0-85129702688