Reliability of the Chevron-notch technique for fracture toughness determination in glass.

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F03%3A07033010" target="_blank" >RIV/68081723:_____/03:07033010 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Reliability of the Chevron-notch technique for fracture toughness determination in glass.

Original language description

The applicability of the chevron-notch (CN) three-point bending test for determining the fracture toughness (KIc) of borosilicate glass was studied. As-received specimens with straight sharp notch were also tested in three-point bending for comparison purposes. It was found that both chevron and straight notched specimen geometries were equally suitable for the determination of fracture toughness in terms of average values and data variability according to Weibull and Student's t -statistics. Further testing with CN geometry showed that annealing of specimens at a temperature (550 8C) higher than the glass transformation temperature led to a lower value of KIc. The difference in mean fracture toughness values (0.75 and 0.64 MPam1/2 before and after annealing, respectively), was ascribed to the different level of compressive residual stresses in the samples. The Student's t -test was applied to confirm the statistical significance of the different KIc values measured. These results demo

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

JH - Ceramics, fire-proof materials and glass

OECD FORD branch

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Project

<a href="/en/project/IAA2041003" target="_blank" >IAA2041003: Brittle fracture micromechanics and toughness scaling models</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2003

Confidentiality

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

Name of the periodical

Materials Science and Engineering A. Elsevier

ISSN

0921-5093

e-ISSN

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Volume of the periodical

347

Issue of the periodical within the volume

1/2

Country of publishing house

GB - UNITED KINGDOM

Number of pages

7

Pages from-to

102-108

UT code for WoS article

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EID of the result in the Scopus database

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