Film thickness in a ball-on-disc contact lubricated with greases, bleed oils and base oils

• Tipo: Artigo em Revista Científica Internacional
• Data: 2012

Autores

cousseau, t (Autor) Outra; bjorling, m (Autor) Outra; graca, b (Autor) Outra; campos, a (Autor) FEUP; seabra, j (Autor) FEUP; larsson, r (Autor) Outra

Revista

Título: Tribology International

Vol. 53

Páginas: 53-60

ISSN: 0301-679X

Editora: Elsevier

Indexação

ISI Web of Knowledge - 33 Citações

Scopus - 47 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia mecânica

Outras Informações

ID Authenticus: P-002-6RM

DOI: 10.1016/j.triboint.2012.04.018

Abstract (EN): Three different lubricating greases and their bleed and base oils were compared in terms of film thickness in a ball-on-disc test rig through optical interferometry. The theoretical values calculated according to Hamrock's equation are in close agreement with the base oil film thickness measurements, which validates the selected experimental methodology. The grease and bleed oil film thickness under fully flooded lubrication conditions presented quite similar behaviour and levels. Therefore, the grease film thickness under full film conditions might be predicted using their bleed oil properties, namely the viscosity and pressure-viscosity coefficient. The base and bleed oil lubricant parameter LP are proportional to the measured film thickness. A relationship between grease and the corresponding bleed oil film thickness was evidenced.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8