Effect of Pile-Up on the Mechanical Characteristics of Steel by Depth Sensing Indentation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24210%2F14%3A%230006396" target="_blank" >RIV/46747885:24210/14:#0006396 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.scientific.net/KEM.606.81" target="_blank" >http://www.scientific.net/KEM.606.81</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.606.81" target="_blank" >10.4028/www.scientific.net/KEM.606.81</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of Pile-Up on the Mechanical Characteristics of Steel by Depth Sensing Indentation

Popis výsledku v původním jazyce

Mechanical properties by depth sensing indentation are derived from the indentation load-displacement data used a micromechanical model developed by Oliver & Pharr (O&P). However, O&P analysis on the indentation unloading curve is developed from a purelyelastic contact mechanics (sink-in). The applicability of O&P analysis is limited by the materials pile-up. However, when it does, the contact area is larger than that predicted by elastic contact theory (material sinks-in during purely elastic contact), and both hardness H and Young's modulus E are overestimated, because their evaluation depends on the contact area deduced from the loaddisplacement data. H can be overestimated by up to 60 % and E by up to 30 % depending on the extent of pile-up [1,2].It is therefore important to determine the effect of pile-up on obtained mechanical characteristics of the material by depth sensing indentation. The work experimentally analyses the effect of pile-up height on mechanical characteristics

Název v anglickém jazyce

Effect of Pile-Up on the Mechanical Characteristics of Steel by Depth Sensing Indentation

Popis výsledku anglicky

Mechanical properties by depth sensing indentation are derived from the indentation load-displacement data used a micromechanical model developed by Oliver & Pharr (O&P). However, O&P analysis on the indentation unloading curve is developed from a purelyelastic contact mechanics (sink-in). The applicability of O&P analysis is limited by the materials pile-up. However, when it does, the contact area is larger than that predicted by elastic contact theory (material sinks-in during purely elastic contact), and both hardness H and Young's modulus E are overestimated, because their evaluation depends on the contact area deduced from the loaddisplacement data. H can be overestimated by up to 60 % and E by up to 30 % depending on the extent of pile-up [1,2].It is therefore important to determine the effect of pile-up on obtained mechanical characteristics of the material by depth sensing indentation. The work experimentally analyses the effect of pile-up height on mechanical characteristics

Druh

D - Stať ve sborníku

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

<a href="/cs/project/EE2.3.30.0024" target="_blank" >EE2.3.30.0024: Rozvoj řešitelských týmů projektů VaV na Technické univerzitě v Liberci</a><br>

Návaznosti

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

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název statě ve sborníku

Key Engineering Materials Vol. 606 (2014) : Local Mechanical Properties X

ISBN

978-3-03835-062-0

ISSN

1013-9826

e-ISSN

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Počet stran výsledku

4

Strana od-do

81-84

Název nakladatele

Trans Tech Publications Ltd

Místo vydání

Zurich

Místo konání akce

Kutna Hora; Czech Republic

Datum konání akce

6. 11. 2013

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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