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Modelling of interfacial damage and delamination of sprayed coatings with cohesive elements
Author(s) -
Roth Stephan,
Kuna Meinhard
Publication year - 2011
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201110079
Subject(s) - materials science , delamination (geology) , corrosion , composite material , traction (geology) , structural engineering , engineering , mechanical engineering , geology , paleontology , subduction , tectonics
Delamination of thermally sprayed corrosion protection coatings as a consequence of thermo‐mechanical fatigue is investigated. This study focusses on the modelling of interfacial damage initiation and evolution under cyclic loading with the help of a cohesive zone model. The presented model features a slight non‐linearity at unloading from the exponential “damage locus” as well as cyclic damage accumulation restricted to (re)loading conditions. Additionally, an endurance limit is introduced indicating the maximum sustainable traction for an infinite number of load cycles. The capability of the model is demonstrated. (© 2011 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)