Peculiarities associated with testing polyetheretherketone (PEEK) in a model rolling contact

Stolarski, T.A.; Gawarkiewicz, Rafał

doi:10.1016/j.triboint.2014.07.018

Cited by 3 publications

(1 citation statement)

References 11 publications

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“…Contact wear and fatigue are important for the design of the tribological applications because they are the major failure reasons. Stolarski and Gawarkiewicz tested the rolling contact between PEEK and ceramic balls under dry conditions [4]. In their test, pitting failure and wear were observed.…”

Section: Introductionmentioning

confidence: 99%

Wear Failure of PEEK-Alumina Ball Bearings in Dry Rolling Contact at 600 rpm - Part 1: Effect of Failure due to Wear Damage on Friction Torque

Matsubayashi,

Watanabe,

Kida

2023

MSF

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The rolling contact fatigue of PEEK-alumina ball bearings in non-lubrication was tested under 500 N and 600 N. During the tests, the friction torque was measured. The retainers under both conditions broke during the tests, and rubbed on the upper and bottom races. The friction features were not different between 500 N and 600 N. However, the black colored surfaces on the races and retainer were identified only in the test under 600 N. The wear loss of the bearing tested under 600 N was larger than that under 500 N. From these results, the specimen under 600 N received the heavier wear damages than that under 500 N, and the worn surface was not related to the friction torque. The wear damages of the inner elements and the outer rings in the retainer were larger than those of the races and 9-alumina balls in both specimens.

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Section: Introductionmentioning

confidence: 99%

Wear Failure of PEEK-Alumina Ball Bearings in Dry Rolling Contact at 600 rpm - Part 1: Effect of Failure due to Wear Damage on Friction Torque

Matsubayashi,

Watanabe,

Kida

2023

MSF

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Dynamic lubrication analysis for a spherical pump

Guan

Hilton

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part J:

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Dynamic lubrication analyses for a spherical pump, consisting of a piston and cylinder, are presented. Contact forces between piston and cylinder are modeled first using an equivalent ball-on-plane model. Both the effects of external loads and operating conditions are considered in a dynamic elastohydrodynamic lubrication model, which is derived from Reynolds equation. Two assumed time-dependent sine-wave and square-wave loads are applied to the model. Fluid film thicknesses are estimated using the model and assumed loads, effects of different structural, and operational parameters, such as piston diameter, radial clearance, applied load, piston speed, lubricant viscosity, and surface roughness, on fluid film thickness are investigated. Fluid film thickness reactions of more realistic smooth and continuous sine wave loads are compared to discontinuous ones in order to verify whether or not assumed ideal loads are acceptable and reliable. Results indicate that piston diameter, speed, lubricant viscosity have positive relations on the dynamic lubrication performance, and increasing these values can improve the dynamic lubrication regime. While the parameters such as radial clearance, applied load, and surface roughness have the verse effects. Furthermore, the impacts of all the above parameters on fluid film are different either. These obtained results can be used to effectively optimize spherical pump lubrication performance.

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Effect of notch sensitivity on the mechanical properties of HA/PEEK functional gradient biocomposites

Pan

Chen

Shen

et al. 2016

Journal of Polymer Engineering

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Abstract Biomaterials used as loading-bearing orthopedic implants usually require various excellent properties such as mechanical, bioactive and bio-tribological performances. Moreover, all of the orthopedic applications feature stress concentrations (notch sensitivity) in their design. In the present work, hydroxyapatite-reinforced polyetheretherketone functional gradient biocomposites (HA/PEEK FGBm) were successfully prepared by the layer stacking method combined with hot pressing molding technology. The effects of notch geometry on the stress-strain behavior of HA/PEEK FGBm were evaluated. The fracture morphology was investigated by scanning electron microscopy (SEM). The study of the stress-strain behavior indicated that the tensile and flexural stresses of HA/PEEK FGBm linearly increased with increasing strain under all the notch sensitivities. The fracture strain of the biocomposites decreased with increasing stress concentration factor and total HA content in the functional biocomposites. Moreover, the tensile and flexural strengths of HA/PEEK FGBm were lower than those of homogeneous HA/PEEK biocomposites. The SEM observation of the fracture micro-morphology showed that the fracture mechanism of HA/PEEK FGBm was gradually controlled by the brittle fracture process. Furthermore, both the tensile and the flexural strengths of HA/PEEK FGBm decreased with the increase in stress concentration factor and total HA content in the biocomposites.

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Peculiarities associated with testing polyetheretherketone (PEEK) in a model rolling contact

Cited by 3 publications

References 11 publications

Wear Failure of PEEK-Alumina Ball Bearings in Dry Rolling Contact at 600 rpm - Part 1: Effect of Failure due to Wear Damage on Friction Torque

Wear Failure of PEEK-Alumina Ball Bearings in Dry Rolling Contact at 600 rpm - Part 1: Effect of Failure due to Wear Damage on Friction Torque

Dynamic lubrication analysis for a spherical pump

Effect of notch sensitivity on the mechanical properties of HA/PEEK functional gradient biocomposites

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