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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F19%3APU137620" target="_blank" >RIV/00216305:26620/19:PU137620 - isvavai.cz</a>

Result on the web

<a href="https://www.scientific.net/KEM.827.196" target="_blank" >https://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 tes

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 available in the literature.

Czech name

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Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

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OECD FORD branch

20506 - Coating and films

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2019

Confidentiality

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

Name of the periodical

Key Engineering Materials (print)

ISSN

1013-9826

e-ISSN

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Volume of the periodical

827

Issue of the periodical within the volume

1

Country of publishing house

CH - SWITZERLAND

Number of pages

7

Pages from-to

196-202

UT code for WoS article

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EID of the result in the Scopus database

2-s2.0-85081081273