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HUTAŘ, P. SEITL, S. NÁHLÍK, L. KNÉSL, Z.
Original Title
Fatigue crack propagation in thin structures
Type
journal article - other
Language
English
Original Abstract
The influence of specimen thickness on fatigue crack behaviour has been investigated. To this aim the fatigue crack propagation rate has been measured on two different types of test specimens with varying thickness. The change of stress singularity exponent for the crack front due to vicinity of the free surface is considered. To explain the effect of stress singularity changes on obtained experimental results a methodology based on generalized stress intensity factor and strain energy density concept has been used. It is shown that for materials with Poissons ratio of about 0.3 the free surface effect does not play a decisive role for specimens with a low level of in-plane constraint but can influence fatigue crack propagation rate in the case of geometries with a high level of the constraint.
Keywords
Fatigue crack, vertex singularity, thin structures
Authors
HUTAŘ, P.; SEITL, S.; NÁHLÍK, L.; KNÉSL, Z.
RIV year
2010
Released
1. 10. 2010
Publisher
TTP
Location
Švýcarsko
ISBN
1013-9826
Periodical
Key Engineering Materials (print)
Year of study
417-418
Number
xxx
State
Swiss Confederation
Pages from
257
Pages to
260
Pages count
4
BibTex
@article{BUT50811, author="Pavel {Hutař} and Stanislav {Seitl} and Luboš {Náhlík} and Zdeněk {Knésl}", title="Fatigue crack propagation in thin structures", journal="Key Engineering Materials (print)", year="2010", volume="417-418", number="xxx", pages="257--260", issn="1013-9826" }