Determination of the yield stress in Al thin film by applying bulge test

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F21%3APU143986" target="_blank" >RIV/00216305:26620/21:PU143986 - isvavai.cz</a>

Výsledek na webu

<a href="https://iopscience-iop-org.ezproxy.lib.vutbr.cz/article/10.1088/1742-6596/1777/1/012030" target="_blank" >https://iopscience-iop-org.ezproxy.lib.vutbr.cz/article/10.1088/1742-6596/1777/1/012030</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1742-6596/1777/1/012030" target="_blank" >10.1088/1742-6596/1777/1/012030</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Determination of the yield stress in Al thin film by applying bulge test

Popis výsledku v původním jazyce

In this work, we have applied an improved method to determine the yield stress and residual stress in a freestanding thin aluminum film by analysing experimental data obtained by the bulge test. The Al thin film was deposited by a magnetron sputtering technique. The film was cyclically loaded with increasing maximum gas pressure. The method to determine the plasticity parameters is based on the load-deflection relation that presents a linear behavior in the elastic regime when it is scaled with the displacement parameter. The plastic deformation induces nonlinear effects that allow determining the elastic limit of the film. At that point, the gas pressure value that generates the elastoplastic transition is identified on the scaled curve. For a bulged square film, the curvatures are computed from an approximated spatial deflection equation to calculate the stresses within the proposed model. The analysis enables construction of biaxial stress-strain curve for the studied film and determination of the yield st

Název v anglickém jazyce

Determination of the yield stress in Al thin film by applying bulge test

Popis výsledku anglicky

In this work, we have applied an improved method to determine the yield stress and residual stress in a freestanding thin aluminum film by analysing experimental data obtained by the bulge test. The Al thin film was deposited by a magnetron sputtering technique. The film was cyclically loaded with increasing maximum gas pressure. The method to determine the plasticity parameters is based on the load-deflection relation that presents a linear behavior in the elastic regime when it is scaled with the displacement parameter. The plastic deformation induces nonlinear effects that allow determining the elastic limit of the film. At that point, the gas pressure value that generates the elastoplastic transition is identified on the scaled curve. For a bulged square film, the curvatures are computed from an approximated spatial deflection equation to calculate the stresses within the proposed model. The analysis enables construction of biaxial stress-strain curve for the studied film and determination of the yield st

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název statě ve sborníku

Journal of Physics: Conference Series

ISBN

—

ISSN

1742-6588

e-ISSN

1742-6596

Počet stran výsledku

10

Strana od-do

1-10

Název nakladatele

Neuveden

Místo vydání

neuveden

Místo konání akce

Kyjev

Datum konání akce

20. 11. 2020

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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