Investigation on surface morphology and tribological property generated by vibration assisted strengthening on aviation spherical plain bearings

Yuan, Zewei; Qin, Yue; Cheng, Kai; Zhao, Wanhua; Zheng, Peng

doi:10.1177/0954406218787850

Cited by 8 publications

(4 citation statements)

References 21 publications

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“…Because the contact on the surface of the inner and outer rings is actually the contact between microconvex peaks, the initial contact area changes due to the change of load. 23,24 When the bearing started to run, the contact state of the initial surface was different, which was manifested as the change in the trend of the torque during the running-in phase. In the steady-state phase, as shown in Figure 4(c), the average torque gradually increased with the increase of load (∼2.45 N•m at 300 N, ∼3.22 N•m at 500 N, ∼3.78 N•m, and ∼4.12 N•m at 900 N).…”

Section: Friction and Wear Propertiesmentioning

confidence: 99%

Research on damage and failure behaviour of coated self-lubricating spherical plain bearings based on detection of friction torque and temperature rise

Liu

Guo²,

Qin

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part J:

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In this study, the wear failure behaviour of coated self-lubricating spherical plain bearings under different working conditions in the light-load and low-frequency range was studied using a swing wear life tester. The commercial GE17ES bearing was the main research object, and the wear state of the bearing was monitored in real time using torque and temperature rise signals. Furthermore, a scanning electron microscope and an energy dispersive X-ray spectroscope were adopted to analyse the wear failure mechanism of bearings. The results indicated that the friction torque and temperature rise signal changes were mainly divided into three stages, and the characteristics of similar changes could be maintained under different working conditions. Furthermore, at the end of the bearing life, the torque and temperature rise had abrupt changes almost at the same time, which indicated the occurrence of bearing failure. In general, the wear failure mechanisms of bearings included abrasive wear and adhesive wear. Moreover, fatigue wear and oxidation wear were under some conditions. The torque and temperature rise comprehensively reflected the service state of coated self-lubricating spherical plain bearings, which could be used as a physical criterion for determining bearing failure. These results had a strong prospect of engineering application, and were expected to provide a reference for determining the failure behaviour of multi-type coated self-lubricating spherical plain bearings in the future, and provided theoretical support for establishing relevant test standards.

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Section: Friction and Wear Propertiesmentioning

confidence: 99%

Research on damage and failure behaviour of coated self-lubricating spherical plain bearings based on detection of friction torque and temperature rise

Liu

Guo²,

Qin

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…Some researchers have employed the orthogonal test to assess the degree of mutual interference between different components; using finite element analysis to replace some of the tests in this process can significantly cut test costs [10][11][12]. Some researchers also strengthened the pad of the knuckle bearing while carrying out ultrasonic rolling on the inner ring, which further improved mechanical performance [13,14]. In addition to surface roughness, hardness and other intuitive properties, wear resistance is also a critical factor influencing the properties of joint bearings [15], and the evaluation of friction and wear properties is a common method used to investigate these properties [16].…”

Section: Introductionmentioning

confidence: 99%

Effect of Ultrasonic Rolling on Surface Properties of GCr15 Spherical Joint Bearing

Zhang,

Yang,

et al. 2024

Lubricants

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Ultrasonic surface rolling process (USRP) has the potential to improve the surface mechanical properties of metal components with platelike or cylindrical macrostructure, but its effect on spherical surfaces remains to be studied in depth. In order to investigate the effect of USRP on the surface roughness, hardness and wear resistance of a spherical joint bearing made of GCr15 bearing steel, ultrasonic rolling strengthening was carried out on a spherical bearing surface under various conditions. The surface roughness and hardness variations of samples before and after strengthening were investigated. It was found that the USRP strengthening process can effectively enhance the surface properties of GCr15 spherical bearing materials, reduce the surface roughness by more than 45%, and increase the surface hardness by more than 10%. Friction and wear tests were carried out before and after ultrasonic rolling. The results show that the friction coefficient of the bearing surface can be reduced by 28%, and that the wear volume can be reduced by 29%. The variation in the friction coefficient correlated to the variance of wear volume as the reinforcement changes.

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“…[42][43][44][45][46] The processing and design methods of different surface textures also have been proposed by many researchers. [47][48][49][50] Adopting this approach, Li et al 51 achieved greater load capacity by introducing grooves into the NFAL running only at ultrasonic levitation effect. However, the problem of the effect of surface texture on ultrasonic levitation bearing with simultaneous use of ultrasonic levitation effect and hydrodynamic effect has never been systematically investigated.…”

Section: Introductionmentioning

confidence: 99%

The performance evaluation of a surface-textured ultrasonic levitation bearing under multi-operation mode

Shi

Gao

Zhang

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part J:

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The load capacity of ultrasonic levitation bearing has become an important factor limiting its practical application in engineering, due to which the load capacity is very small compared to that of other gas bearing. In order to obtain greater load capacity, surface texture is introduced into ultrasonic levitation bearing in this study. A theoretical model considering the geometry parameters and mode shape is established to obtain the running performance of surface-textured ultrasonic levitation bearing, which is solved by using eight-point discrete grid finite-difference method. Influence of driving voltage, rotational speed, eccentricity ratio, texture position, and texture size parameters on load capacity is investigated systematically. Previous experimental results were used to verify the feasibility of the proposed model. The results show that positive texture can effectively improve the load capacity of ultrasonic levitation bearing, especially under ultrasonic levitation mode. Research results are instructive for understanding the lubrication mechanism of ultrasonic levitation bearing and further promote the practical application of the bearing in engineering.

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Investigation on surface morphology and tribological property generated by vibration assisted strengthening on aviation spherical plain bearings

Cited by 8 publications

References 21 publications

Research on damage and failure behaviour of coated self-lubricating spherical plain bearings based on detection of friction torque and temperature rise

Research on damage and failure behaviour of coated self-lubricating spherical plain bearings based on detection of friction torque and temperature rise

Effect of Ultrasonic Rolling on Surface Properties of GCr15 Spherical Joint Bearing

The performance evaluation of a surface-textured ultrasonic levitation bearing under multi-operation mode

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