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MALÍKOVÁ, L. RAVAZI, S. BERTO, F.
Original Title
Crack propagation in a brittle DCB specimen assessed by means of the Williams’ power expansion
Type
journal article in Scopus
Language
English
Original Abstract
A double cantilever beam geometry has been chosen in order to investigate the importance of the higher-order terms of the Williams’ power expansion for the crack path estimation. The crack propagation has been tested experimentally on a brittle polymethylmethacrylate (PMMA) specimen and although the mode I loading conditions were applied, the crack kinked from its original plane immediately and propagated towards the bottom side of the specimen. It has been shown that this phenomenon is connected to the magnitude and sign of the T-stress and to the level of the constraint generally. In this work, the influence of the third and higher terms of the Williams’ series on the crack propagation is investigated. The generalized form of the well-known maximum tangential stress fracture criterion for determination of the crack propagation angle has been tested and discussed. The observed differences in the crack trajectory of different specimens have been found to be related to the magnitude of the higher-order terms of the stress tensor components at the crack tip.
Keywords
Crack deflection; DCB specimen; Generalized MTS criterion; Geometry effect; Williams’ power expansion
Authors
MALÍKOVÁ, L.; RAVAZI, S.; BERTO, F.
Released
1. 4. 2019
Publisher
Gruppo Italiano Frattura
Location
Verona, Itálie
ISBN
1971-8993
Periodical
Frattura ed Integrita Strutturale
Year of study
13
Number
48
State
Republic of Italy
Pages from
34
Pages to
41
Pages count
8
URL
https://www.fracturae.com/index.php/fis/article/view/2292/2350
Full text in the Digital Library
http://hdl.handle.net/11012/180631
BibTex
@article{BUT156404, author="Lucie {Malíková} and Seyed Mohammad Javad {Ravazi} and Filippo {Berto}", title="Crack propagation in a brittle DCB specimen assessed by means of the Williams’ power expansion", journal="Frattura ed Integrita Strutturale", year="2019", volume="13", number="48", pages="34--41", doi="10.3221/IGF-ESIS.48.05", issn="1971-8993", url="https://www.fracturae.com/index.php/fis/article/view/2292/2350" }