Test Methods to Visualize the Break-Down Behaviour of Sliding Bearing Materials

Gruen, Florian; Gódor, István; Eichlseder, Wilfried; Gaertner, Walter

doi:10.1115/ijtc2007-44150

Cited by 2 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These models differ in their soft phase content and are depicted in Fig. 11 [19]. With increasing soft phase content, the emergency running properties of the material are improved with a corresponding reduction of mechanical strength.…”

Section: Tribological Functional Materials Modelsmentioning

confidence: 99%

See 1 more Smart Citation

Fundamentals of optimizing aluminium-based journal bearing materials

Grün

Gódor

Eichlseder

2009

Proceedings of the Institution of Mechanical Engineers, Part J:

View full text Add to dashboard Cite

In this article, a test methodology of model scale is used to visualize the processes taking place during operation and subsequent breakdown in the boundary layer of journal bearing materials. The investigated materials are alloys of aluminium (Al99.6, AlSn20Cu, AlSn40) and tin (SnSb7.5Cu3.5). The utilized test configuration is based on a ring-on-disc system. The employed seizure test procedure was designed in previous studies. The tribometric results clearly show differences in the tribological behaviour between the materials. A series of tests are carried out to explain the observed differences. The frictional surfaces and microsections are observed using microscopy and microindentation. Pure aluminium is characterized both by a potentially low coefficient of friction and an unforgiving overload behaviour. This is due to the fact that components based on pure aluminium tend to lose system stability spontaneously. As more of the soft-phase Sn is added to the matrix, the emergency running properties improve. The system behaves less erratically and the overload behaviour improves. However, the mechanical strength and the wear resistance drop. Tribological functional models summarize the results of tribometrics and damage analysis. These models are the key to further optimization of the materials.

show abstract

Section: Tribological Functional Materials Modelsmentioning

confidence: 99%

“…As a Fig. 11 Functional models of tested bearing materials [15,16,19] The factory condition of AlSn40 contains a soft phase content of 40 per cent and is shown in State no. I.…”

Section: Tribological Functional Materials Modelsmentioning

confidence: 99%

Fundamentals of optimizing aluminium-based journal bearing materials

Grün

Gódor

Eichlseder

2009

Proceedings of the Institution of Mechanical Engineers, Part J:

View full text Add to dashboard Cite

show abstract

Test methods to characterise differently designed tribomaterials

2008

View full text Add to dashboard Cite

In this study, we present the development of model scale tribological test methods using the model ring‐on‐disc. The methods enable the demonstration of processes that occur in sliding materials during operation and subsequent breakdown. Currently, existing test methods are not able to visualise these complex processes to the same extent. We designed adapted test programmes for the visualisation of different material properties. This paper discusses the suitability and the significance of these test programmes. We benchmarked the test methods on selected metal‐based and plastic tribomaterials (CuPb22Sn2 and Polytetraflaoroethylene (PTFE) and bronze (Bz)) under lubricated and non‐lubricated conditions. We conducted an extensive damage analysis of the surfaces and surface layers. Furthermore, the classification of the damage patterns and the tribometric results are the basis for the development of models that are capable of representing the most important states during operation. The models are of sufficient quality to assist in the further optimisation of the materials. Copyright © 2008 John Wiley & Sons, Ltd.

show abstract

Test Methods to Visualize the Break-Down Behaviour of Sliding Bearing Materials

Cited by 2 publications

References 0 publications

Fundamentals of optimizing aluminium-based journal bearing materials

Fundamentals of optimizing aluminium-based journal bearing materials

Test methods to characterise differently designed tribomaterials

Contact Info

Product

Resources

About