Přístupnostní navigace
E-application
Search Search Close
Publication detail
KNÉSL, Z. NÁHLÍK, L. BAREŠ, P.
Original Title
Failure behavior of coated materials
Type
conference paper
Language
English
Original Abstract
Results concerning the influence of a through coating crack on the substrate failure are reported. The problem is studied under the assumptions corresponding to small scale yielding conditions and calculations are performed by the finite element method. An approximate approach based on calculations of crack mouth opening displacement for thin protective layers is suggested. It is concluded that in the case of a stiffer coating on a more compliant substrate, the through coating cracks represent dangerous stress concentrators, and as a consequence of elastic mismatch of both materials, the critical applied stress for substrate failure decreases. Traditional approaches may have underestimated this effect and estimations of the service life of coated structures neglecting this phenomenon could lead to non-conservative values, with unexpected failures.
Keywords
crack mouth opening displacement, crack propagation, bimaterial interface
Authors
KNÉSL, Z.; NÁHLÍK, L.; BAREŠ, P.
RIV year
2005
Released
23. 8. 2005
Publisher
University of Zilina
Location
Žilina
ISBN
80-969165-4-8
Book
10 th International Conference on Numerical Methods in Continuum Mechanics
Pages from
47
Pages to
48
Pages count
2
BibTex
@inproceedings{BUT21717, author="Zdeněk {Knésl} and Luboš {Náhlík} and Pavel {Bareš}", title="Failure behavior of coated materials", booktitle="10 th International Conference on Numerical Methods in Continuum Mechanics", year="2005", pages="47--48", publisher="University of Zilina", address="Žilina", isbn="80-969165-4-8" }