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On the stability of delamination growth at scratching of thin film structures
RISE, Swerea, Swerea KIMAB.
Royal Institute of Technology.
2011 (English)In: JCT Research, ISSN 1547-0091, E-ISSN 2168-8028, Vol. 8, no 6, 707-717 p.Article in journal (Refereed)
Abstract [en]

Scratching of thin film/substrate structures is studied theoretically and numerically. The results are discussed in connection to delamination initiation and in particular subsequent growth at scratching. The material behavior of the film is described by classical elastoplasticity accounting for large deformations. The deformation of the substrate is neglected indicating that the results are pertinent to soft thin films. The numerical investigation is performed using the finite element method (FEM) and the numerical strategy is discussed in some detail. The results from this study show that delamination growth at thin film scratching is a stable feature with crack arrest occurring at a decreasing load. © 2011 ACA and OCCA.

Place, publisher, year, edition, pages
2011. Vol. 8, no 6, 707-717 p.
Keyword [en]
Delamination growth, FEM analysis, Film/substrate structures, Scratching, Stability
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:ri:diva-12852DOI: 10.1007/s11998-011-9352-zScopus ID: 2-s2.0-80054907897OAI: oai:DiVA.org:ri-12852DiVA: diva2:973045
Available from: 2016-09-22 Created: 2016-09-22Bibliographically approved

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