Publication detail
Crack propagation in the vicinity of the interface in layered materials
ŠESTÁKOVÁ, L. NÁHLÍK, L. HUTAŘ, P. KNÉSL, Z.
Czech title
Šíření trhliny v blízkosti rozhraní ve vrstevnatých materiálech
English title
Crack propagation in the vicinity of the interface in layered materials
Type
journal article - other
Language
en
Original abstract
Paper deals with the problem of crack propagation in the vicinity of the interface in layered materials. Layered materials are often used in practice, primarily because of their better mechanical properties in comparison with properties of individual materials components. The configuration of a crack with its tip at the bi-material inter-face can be created during the crack propagation in the structure. It is important to decide if the crack propagates into the second material in this case. The step change of material properties at bi-material interface causes that the classical linear elastic fracture mechanics cannot be used. A generalized approach has to be applied. In this paper, two criteria are applied for the determination of the critical value of applied load. Knowledge of these values is important for the estimation of service life time of such structures. Results obtained can be used espe-cially for multi-layer polymer composites design. On the basis of presented procedures, suitable material combi-nation can be suggested for composite structures.
Czech abstract
Článek se zabývá šířením trhlin v blízkosti rozhraní ve vrstevnatých materiálech. V případě, kdy se vrchol trhliny dostane na rozhraní, je nutné rozhodnout, zda se bude trhlina šířit dál do druhého materiálu nebo ne. Skoková změna materiálových vlastností na rozhraní zabraňuje možnosti použít klasický přístup lineárně elastické lomové mechaniky. Je nutné použít zobecněný přístup. Pro určení kritické hodnoty aplikovaného zatížení byla použita dvě kritéria.
English abstract
Paper deals with the problem of crack propagation in the vicinity of the interface in layered materials. Layered materials are often used in practice, primarily because of their better mechanical properties in comparison with properties of individual materials components. The configuration of a crack with its tip at the bi-material inter-face can be created during the crack propagation in the structure. It is important to decide if the crack propagates into the second material in this case. The step change of material properties at bi-material interface causes that the classical linear elastic fracture mechanics cannot be used. A generalized approach has to be applied. In this paper, two criteria are applied for the determination of the critical value of applied load. Knowledge of these values is important for the estimation of service life time of such structures. Results obtained can be used espe-cially for multi-layer polymer composites design. On the basis of presented procedures, suitable material combi-nation can be suggested for composite structures.
Keywords in Czech
trhlina, bi-materiálové rozhraní, kritéria stability, vrstevnaté materiály
Keywords in English
crack, bi-material interface, stability criteria, layered materials
RIV year
2009
Released
04.01.2009
Publisher
University of West Bohemia
Location
Plzeň, Česká republika
ISSN
1802-680X
Journal
Applied andComputational Mechanics
Volume
III.
Number
1.
Pages from–to
195–204
Pages count
10
BIBTEX
@article{BUT49608,
author="Lucie {Malíková} and Luboš {Náhlík} and Pavel {Hutař} and Zdeněk {Knésl},
title="Crack propagation in the vicinity of the interface in layered materials",
journal="Applied andComputational Mechanics",
year="2009",
volume="III.",
number="1.",
month="January",
pages="195--204",
publisher="University of West Bohemia",
address="Plzeň, Česká republika",
issn="1802-680X"
}