Artículo
Effect of Crack Patterns on the Stress Distribution of Hard Chromium Coatings under Sliding Contact: Stochastic Modeling Approach
Fochesatto, Nicolás Sebastián
; Buezas, Fernando Salvador
; Rosales, Marta Beatriz
; Tuckart, Walter Roberto
Fecha de publicación:
06/2017
Editorial:
American Society of Mechanical Engineers
Revista:
Journal of Tribology
ISSN:
0742-4787
e-ISSN:
1528-8897
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
In this work, the influence of different crack arrangements in the stress distribution of hard chromium (HC) coatings was determined. Three parameters for position and length of the cracks for two different types of coatings were probabilistically modeled based on measured scanning electron microscopy (SEM) images. Probability density functions (PDF) for those parameters were obtained to characterize each kind of coating. A two-dimensional finite element (FE) model of the coating in contact with a rigid disk was developed, modeling cracks with elliptical shapes. A Monte Carlo method was used to simulate different crack distributions for each kind of coating, and values of stress and strains in the domain were obtained. Both the J-integral and the stress intensity factors (SIFs) were taken as comparative parameters of the results. Coatings which statistically present larger quantities of shorter cracks have lower values of J-integral and SIFs, and, therefore, distribute stresses better than those with low density of longer cracks.
Palabras clave:
Contact
,
Coatings
,
Stochastic
,
Stochastic
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(CCT - BAHIA BLANCA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - BAHIA BLANCA
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - BAHIA BLANCA
Articulos(IFISUR)
Articulos de INSTITUTO DE FISICA DEL SUR
Articulos de INSTITUTO DE FISICA DEL SUR
Citación
Fochesatto, Nicolás Sebastián; Buezas, Fernando Salvador; Rosales, Marta Beatriz; Tuckart, Walter Roberto; Effect of Crack Patterns on the Stress Distribution of Hard Chromium Coatings under Sliding Contact: Stochastic Modeling Approach; American Society of Mechanical Engineers; Journal of Tribology; 139; 6; 6-2017; 1-10
Compartir
Altmétricas