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- Title
On scratch testing of pressure-sensitive polymeric coatings.
- Authors
Wredenberg, Fredrik; Larsson, Per-Lennart
- Abstract
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.
- Subjects
POLYMERIC composite testing; SUBSTRATES (Materials science); MECHANICAL behavior of materials; FINITE element method; DELAMINATION of composite materials; BENDING moment; STATISTICAL correlation
- Publication
Journal of Coatings Technology & Research, 2010, Vol 7, Issue 3, p279
- ISSN
1945-9645
- Publication type
Article
- DOI
10.1007/s11998-009-9202-4