Resumo

PEREZ-RUIZ, Eduardo-A.; NEGRIN-HERNANDEZ, Luis-Iván  e  MARTINS-DE-SOUZA, Roberto. Mechanical Behavior study of a coated system by computer simulation of the scratch test. Ingeniería Mecánica [online]. 2015, vol.18, n.2, pp. 80-86. ISSN 1815-5944.

One way to evaluate a coated system is through the scratch test. The results obtained depend of the variables including mechanical properties and geometry of indenter, loading, displacement, material properties in the system as hardness, elastic modulus, microstructure, roughness surface, thickness, among others, which are indicated in ASTM C1624 / 05. This paper analyzes through scratchtest simulation, the effect of the indenter geometry (conical and spherical), the loading (20 N and 50 N), the thickness coating (2,1 µm and 4,6 µm) and the friction coefficient values (0,3 and 0,5) in the stresses and plastic deformation behavior at the surface of a coated system. The results suggest that the coefficient of friction has a high importance in the mechanical performance of the coated system.

Palavras-chave : scratch test; computacional simulation; coated system.

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