Influence of subcritical crack growth on the determination of fracture toughness in brittle materials

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F16%3A00458498" target="_blank" >RIV/68081723:_____/16:00458498 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.jeurceramsoc.2015.11.047" target="_blank" >http://dx.doi.org/10.1016/j.jeurceramsoc.2015.11.047</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jeurceramsoc.2015.11.047" target="_blank" >10.1016/j.jeurceramsoc.2015.11.047</a>

Result language

angličtina

Original language name

Influence of subcritical crack growth on the determination of fracture toughness in brittle materials

Original language description

The strength of materials suffering from subcritical crack growth (SCCG) can be affected by the loading conditions and environment. This crack growth can also occur during the measurement of the material's fracture toughness, K-lc, yielding lower measured (apparent) values. In this work the K-lc, measurements of two different brittle materials was compared in different environments (i.e., water, ambient air and argon) using three testing methods: (i) Single Edge V-Notch Beam, (ii) Chevron Notch Beam, and (iii) Ball-on three-Balls-Mc. A strong effect of the environment was found on the measured K-lc values using all three methods. Low "K-lc values" were measured in water, i.e., similar to 1.3-1.7 MPa m(1/2) depending on the material, whereas higher "toughness values" were obtained in argon, i.e., similar to 2.0-2.3 MPa m(1/2). This is explained with a model accounting for the SCCG during the fracture toughness experiment. Recommendations on the assessment of fracture toughness in brittle materials are given. (C) 2015 Elsevier Ltd. All rights reserved.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

JL - Fatigue and fracture mechanics

OECD FORD branch

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Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

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

Name of the periodical

Journal of the European Ceramic Society

ISSN

0955-2219

e-ISSN

—

Volume of the periodical

36

Issue of the periodical within the volume

5

Country of publishing house

GB - UNITED KINGDOM

Number of pages

6

Pages from-to

1307-1312

UT code for WoS article

000369457300022

EID of the result in the Scopus database

2-s2.0-84958741235