Fracture toughness evaluation of a cracked au thin film by applying a finite element analysis and bulge test

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F20%3A00533697" target="_blank" >RIV/68081723:_____/20:00533697 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.827.196" target="_blank" >http://dx.doi.org/10.4028/www.scientific.net/KEM.827.196</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.827.196" target="_blank" >10.4028/www.scientific.net/KEM.827.196</a>

Result language

angličtina

Original language name

Fracture toughness evaluation of a cracked au thin film by applying a finite element analysis and bulge test

Original language description

This paper presents a finite element analysis of a pre-cracked freestanding gold thin film subjected to bulge test. These tests were conducted in order to determine the elasto-plastic properties and fracture toughness of the gold films. For the experimental tests, a pre-crack was introduced in the center of the film by focused ion beam (FIB) milling with a length of 10 µ m and a width of 100nm. For the numerical fracture analysis, the problem was divided into two stages, the first stage was the development of the numerical model on the whole film without pre-crack (elasto-plastic analysis) and the second one was performed on a film portion that included the pre-crack (sub-modeling stage). Three different notches (rounded, sharp and V-sharp) were applied to calculate the stress intensity factor around the crack tip using path independent J-integral. The obtained results show that the load-deflection curves for non-cracked and pre-cracked film reproduced the experiments using the calculated elasto-plastic properties. This indicates that the proposed models presented a good correlation and robustness. Additionally, fracture toughness values were calculated between 0.288 0.5 and 0.303 MPa. m0.5 with J-integral values 1.037 J/m2 (elastic) and 1.136 J/m2 (elasto-plastic) which correspond with other calculations

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

20506 - Coating and films

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

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

Article name in the collection

Key Engineering Materials

ISBN

978-3-0357-1586-6

ISSN

1013-9826

e-ISSN

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Number of pages

7

Pages from-to

196-202

Publisher name

Trans Tech Publication

Place of publication

Zurich

Event location

Rhodos

Event date

Sep 16, 2019

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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