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Numerical study of tensile tests conducted on systems with elastic-plastic films deposited onto elastic-plastic substrates
Indexado
WoS WOS:000285487700042
Scopus SCOPUS_ID:78649923751
DOI 10.1016/J.SURFCOAT.2010.07.104
Año 2010
Tipo artículo de investigación

Citas Totales

Autores Afiliación Chile

Instituciones Chile

% Participación
Internacional

Autores
Afiliación Extranjera

Instituciones
Extranjeras


Abstract



In this work, a series of two-dimensional plane-strain finite element analyses was conducted to further understand the stress distribution during tensile tests on coated systems. Besides the film and the substrate, the finite element model also considered a number of cracks perpendicular to the film/substrate interface. Different from analyses commonly found in the literature, the mechanical behavior of both film and substrate was considered elastic-perfectly plastic in part of the analyses. Together with the film yield stress and the number of film cracks, other variables that were considered were crack tip geometry, the distance between two consecutive cracks and the presence of an interlayer. The analysis was based on the normal stresses parallel to the loading axis (sigma(xx)), which are responsible for cohesive failures that are observed in the film during this type of test. Results indicated that some configurations studied in this work have significantly reduced the value of sigma(xx) at the film/substrate interface and close to the pre-defined crack tips. Furthermore, in all the cases studied the values of sigma(xx) were systematically larger at the film/substrate interface than at the film surface. (C) 2010 Elsevier B.V. All rights reserved.

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Disciplinas de Investigación



WOS
Physics, Applied
Materials Science, Coatings & Films
Scopus
Chemistry (All)
Materials Chemistry
Surfaces, Coatings And Films
Condensed Matter Physics
Surfaces And Interfaces
SciELO
Sin Disciplinas

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Publicaciones WoS (Ediciones: ISSHP, ISTP, AHCI, SSCI, SCI), Scopus, SciELO Chile.

Colaboración Institucional



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Autores - Afiliación



Ord. Autor Género Institución - País
1 Fukumasu, N. K. - UNIV SAO PAULO - Brasil
Universidade de Sao Paulo - USP - Brasil
Universidade de São Paulo - Brasil
2 Angelo, C. M. - UNIV SAO PAULO - Brasil
Universidade de Sao Paulo - USP - Brasil
Universidade de São Paulo - Brasil
3 Ignat, Miguel Hombre Universidad de Chile - Chile
4 Souza, R. M. - UNIV SAO PAULO - Brasil
Universidade de Sao Paulo - USP - Brasil
Universidade de São Paulo - Brasil

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Financiamiento



Fuente
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Conselho Nacional de Desenvolvimento Científico e Tecnológico

Muestra la fuente de financiamiento declarada en la publicación.

Agradecimientos



Agradecimiento
The authors recognize the National Council for Scientific and Technological Development-CNPq for financial support through processes 380172/2010-0 and 303780/2008-8.

Muestra la fuente de financiamiento declarada en la publicación.