Friction and wear of highly stressed thermoplastic bearings under dry sliding conditions

Marx, Steffen; Junghans, R.

doi:10.1016/0043-1648(95)06812-0

Cited by 22 publications

(9 citation statements)

References 7 publications

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“…Therefore, another method to get highly tribological performance on PEEK is to enhance its stiffness, and carbon fibers and glass fibers are the best candidates. Indeed, researchers have paid great efforts on carbon and glass fibers reinforced PEEK [80][81][82][83][84][85][86][87]. Despite fibers reinforced PEEK get well wear-resistance and friction-reduction performances, the tribological behaviors of material are affected by many factors such as lubricants, patterns and kinds of fibers, temperature, load, counterface, sliding distance and sliding velocity.…”

Section: Poly Ether Ether Ketone (Peek) Biomaterialsmentioning

confidence: 99%

The recent progress of tribological biomaterials

Shi

Guo

Liu

2015

Biosurface and Biotribology

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Tribological phenomena abundantly exist in living beings, especially in human beings, such as teeth, eyes, bones, skins, heart valves and so on, and it is of meanings to reveal the mechanism of tribology in human body and fabricate artificial biomaterials to replace the damaged tissues to release the pain of patients. Alloys, ceramics and polymers are three uppermost materials used in engineering and some of them play a crucial role in biomedicine. In the paper, we provide an overview of the tribological behaviors of artificial biomaterials including alloys, ceramics and polymers. We aim to provide fundamental mechanistic and applications of tribological biomaterials, while emphasizing the advantages and disadvantages of various kinds of tribological biomaterials. Finally, some challenges and the potential promising breakthroughs are also succinctly highlighted in this field.

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Section: Poly Ether Ether Ketone (Peek) Biomaterialsmentioning

confidence: 99%

The recent progress of tribological biomaterials

Shi

Guo

Liu

2015

Biosurface and Biotribology

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“…Also, the performance is influenced by the surface finish and the contact conditions [6]. Hence, experimental tests are essential for a complete understanding of a specific tribosystem [7]. This information shall be provided to ensure theoretical basis for selection of materials, especially for high-performance tribological applications which are demanded, commonly, in new technologies [8].…”

Section: Introductionmentioning

confidence: 99%

Kinetic Friction Modeling and Standard Uncertainty Measurement Determination for Sliding Bearing on Shaft Apparatus

Vale¹,

Silva²

2014

ABM Proceedings

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In standard wear tests, such as pin on disk (ASTM-G99) or block on ring (ASTM-G77), the apparatus simulates conditions that are often different from a machine element real application. Therefore, for an accurate investigation of a tribological application, it is essential to test the real condition in which there are similarities as: geometry, contact details, force application mode, materials, among others. It emphasizes that for studies involving polymeric materials it becomes extremely relevant. Thus, the Laboratory of Surfaces and Contact (LASC) at UTFPR developed an apparatus for sliding bearing on shaft test. In that equipment, loads are applied by a dead-weight system and the frictional force is measured on a load cell. The apparatus operating ranges for load added to the dead weight system and rotation shaft are from 0.2 to 5.0 kgf and from 260 to 3500 rpm, respectively. This paper presents a detailed evaluation of such apparatus, which includes free-body diagrams analysis and a deduction to obtain an equation for the kinetic friction coefficient. Also, the standard measurement uncertainties of a caliper, an electronic scale, and a cell load were determined. It was verified that the kinetic friction coefficient equation is dependent on the apparatus geometry, the applied load, and the frictional force value. Additionally, through the statistical significance analysis it was concluded that some terms in the equation were not significant. Finally, through the application of the error propagation theory in the kinetic friction coefficient equation, the standard measurement uncertainty of the apparatus which showed a value nearby 0.002 along the operating range of the apparatus was obtained.

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“…Previously, a number of studies on the tribological properties of sliding bearing were carried out through considering multiple impact factors such as lubrication conditions, matching materials, and geometric parameters. Marx and Junghans 4 studied the friction and wear behavior of sliding bearings made from different high temperature thermoplastics. Several comparison experiments with the bearings designed through the PEEK with different components were performed.…”

Section: Introductionmentioning

confidence: 99%

Research on the sliding bearing pair of water hydraulic axial piston pump

Yin

Nie

Zhang

et al. 2013

Proceedings of the Institution of Mechanical Engineers, Part C:

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Sliding bearing pair is one of the important friction pairs within water hydraulic axial piston pump, which can result in significant influences on the pump's performance. Generally, owing to the characteristics of low viscosity and poor lubrication of water, the sliding bearing will operate under condition of dry or mixed lubrication, leading to a severe adhesives wear and material softening. In order to investigate the flow field of the sliding bearing in hydrodynamic condition, the effects of the water film pressure distribution, load carrying capacity changing with radial clearance and width-radius ratio of the sliding bearing pair have been simulated through MATLAB. And a suitable material combination of the sliding bearing pair was selected though a custom-manufactured friction and wear test rig. Based on the theoretical and experimental studies, an appropriate structure of the sliding bearing within water hydraulic axial piston pump was designed. The loading experiments for the developed water hydraulic axial piston pump assembled with two different flanges have been conducted at a water hydraulic component test rig. The experimental results revealed that the volumetric efficiency and noise characteristics of the pump are remarkably improved when the sliding bearing work under hydrodynamic lubrication condition in comparison with dry lubrication condition. The research results have laid the foundation for the development and improvement of the water hydraulic axial piston pump.

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Friction and wear of highly stressed thermoplastic bearings under dry sliding conditions

Cited by 22 publications

References 7 publications

The recent progress of tribological biomaterials

The recent progress of tribological biomaterials

Kinetic Friction Modeling and Standard Uncertainty Measurement Determination for Sliding Bearing on Shaft Apparatus

Research on the sliding bearing pair of water hydraulic axial piston pump

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