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On scratch testing of pressure-sensitive polymeric coatings
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.).
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.).ORCID iD: 0000-0001-6232-8819
2010 (English)In: JCT Research, ISSN 1547-0091, E-ISSN 2168-8028, Vol. 7, no 3, 279-290 p.Article in journal (Refereed) Published
Abstract [en]

Scratching of polymeric coatings on hard substrates is studied experimentally and numerically from a mechanical point of view. In particular, the behavior of local and global mechanical properties, as well as the delamination behavior, at scratching due to pressure-sensitive effects is of interest. The numerical investigation is performed using the finite element method (FEM) where pressure sensitivity is modeled using the classical Drucker-Prager plasticity model (Drucker, Prager, Q. Appl. Math., 10 157-165 (1952)) while the adhesion of the coating to the substrate is modeled as a cohesive zone where relevant model parameters are determined experimentally using the double cantilever beam test with uneven bending moments (DCB-UBM). Good correlation between experimental and numerical results were achieved and the most important finding concerns the fact that the dependence of pressure sensitivity proved to be different for different mechanical quantities.

Place, publisher, year, edition, pages
2010. Vol. 7, no 3, 279-290 p.
Keyword [en]
Scratch testing, Film/substrate composites, Polymers, FE analysis, Pressure-sensitivity
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-27296DOI: 10.1007/s11998-009-9202-4ISI: 000278927000001Scopus ID: 2-s2.0-77954953634OAI: oai:DiVA.org:kth-27296DiVA: diva2:376917
Note
QC 20101213Available from: 2010-12-13 Created: 2010-12-09 Last updated: 2017-12-11Bibliographically approved

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Larsson, Per-Lennart

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