Effect of laser surface texturing on tribological properties of polyimide composites in the application of traveling wave rotary ultrasonic motor

Liu, Xiaoliang; Zhao, Gai; Qiu, Jinhao

doi:10.1108/ilt-06-2016-0130

Cited by 14 publications

(7 citation statements)

References 21 publications

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“…Previous studies have shown that the PI composites with a diameter of 0.3 mm and 7.06 per cent area density surface texture have the highest friction coefficient (Liu et al , 2018). Therefore, the surface texture in this experiment also uses the same diameter and area density, radial distribution on the surface of rotor frictional material, as shown in Figure 3.…”

Section: Experiments Detailsmentioning

confidence: 99%

Improved energy conversion efficiency of the ultrasonic motor with surface texture

Liu

Qiu

Zhao

2018

ILT

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Purpose This paper aims to investigate the effect of frictional materials and surface texture on the energy conversion efficiency and the mechanical output performance of the ultrasonic motor (USM). Design/methodology/approach A newly designed testing system was set up to measure the mechanical output performance of the USM. The influence of different frictional materials on the output performance of the USM was studied under the same assembly process and parameters. The surface texture was fabricated by laser ablation processing. The effects of surface texture and input parameters on the energy conversion efficiency and mechanical output performance of the USM were studied. Findings The results show that polyimide (PI) composites as frictional material can significantly improve the output performance of the USM compared to polytetrafluoroethylene (PTFE) composites. When the pre-load is 240 N, the energy conversion efficiency of the USM using textured PI composites as frictional material can reach 41.93 per cent, increased by 29.21 per cent compared to PTFE composites, and the effective output range of the USM is increased to 0.7-1.1 N m. Besides, the pre-load and surface texture have a great influence on the output performance of the USM. Originality/value PI composites can improve the mechanical output performance of the USM. Surface texture can also improve the interface tribological properties and the energy conversion efficiency based on the advanced frictional materials, which will contribute to the increment of the output performance of the USM under the same input conditions.

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Section: Experiments Detailsmentioning

confidence: 99%

Improved energy conversion efficiency of the ultrasonic motor with surface texture

Liu

Qiu

Zhao

2018

ILT

Self Cite

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“…There are different texturing techniques such as sandblasting, ion beam texturing, etching technique, machining, and laser texturing, being the last one the most innovative in recent years [8,9]. Surface texturing has been used successfully in tribological applications where it is sought to reduce wear between sliding surfaces, since there is evidence that the cavities that are created with this technique can be used to store lubricant (Figure 1(a)) and keep the sliding surfaces constantly lubricated; furthermore, the cavities can also be used to trap wear particles (debris) that would otherwise produce third-body abrasive wear [9][10][11][12], as can be seen in Figure 1 In some cases, the benefits of texturing have been used for biotribological applications with the aim of reducing wear between components of joint prostheses, where positive results have been obtained; an example of this is the work of Ito et al, where concave dimples (diameter of 0.5 mm, pitch of 1.2 mm, and depth of 0.1mm) were textured on the surface of a Co-Cr alloy femoral head using the electrical discharge etching technique. Wear tests were carried out using a hip joint simulator with a metal-on-polyethylene configuration, the results showed that dimples reduced COF and wear by 35% and 68%, respectively [13].…”

Section: Introductionmentioning

confidence: 99%

State of the Art of Surface Texturing for Biotribology Applications

Quintanilla-Correa¹,

Peña-Parás²,

Maldonado-Cortés³

et al. 2021

IJMMT

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Surface texturing can be defined as a technique that consists of creating micro cavities in the surface of a material. There are different texturing techniques such as chemical etching, electromechanical micromachining, diamond embossing, electric discharge, pellet-pressing and laser surface, the last being the most common. For years, these surface texturing techniques have been used in tribological applications because microcavities can store oils or fluids and constantly lubricate the surfaces that are subjected to wear; they can also be used to trap wear particles (debris) that would otherwise act as abrasive particles (three body abrasive wear). This literature review seeks to analyse and compare the advantages that the use of surface texturing techniques can offer in reducing the wear of prosthetic components and therefore lengthening their useful life, to provide a better quality of life to patients. The results of this review showed a growing interest in the scientific community in the use of surface texturing for biotribogical applications, using to a greater extent the Laser Surface Texturing (LST) technique and the surface pattern composed by dimples.

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“…Previous works by researchers has proved that LST can lead to reduction of friction and wear in many tribosystems (Fowell et al , 2012; Gropper et al , 2016; Li et al , 2018; Liu et al , 2018; Wang et al , 2018). Rosenkranz et al (2016) investigated the load-dependent run-in and wear behavior of line-like patterns in tests with stainless steel substrates.…”

Section: Introductionmentioning

confidence: 99%

Effects of laser surface texturing on tribological properties of Ti-6Al-4V in hydroxyethyl-cellulose water-based lubrication

Sheng

Zhang

et al. 2019

ILT

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Purpose This paper aims to investigate the effect of laser surface texturing on the tribological performance of Ti-6Al-4V disks sliding against Si3N4 balls under hydroxyethyl-cellulose water-based lubrication. The friction coefficients and wear losses of textured and untextured disks were measured and compared. The results indicate that the texture patterns can lead to reduction of friction and wear in the condition of water-based lubrication. Design/methodology/approach Solutions of hydroxyethyl cellulose were used as water-based lubricants. To find the optimal laser texturing parameters for the best performance enhancement, three line-like patterns were fabricated onto the disks and three machining parameters were used for each type of pattern. Tribological tests were conducted in rotation sliding with ball-on-disk contact configuration on UMT-2. Findings A higher density of texture lines leads to a larger friction and wear reduction. Compared with untextured disks, the friction coefficient is reduced from 0.043 to 0.028 for textured disks. Some unworn parts were detected in the contact region of the balls against textured disks, which were not found on the balls against untextured disks. The worn surfaces indicated that periodic geometry of the contact track was rebuilt during run-in period, which was beneficial for the formation of lubricant films. Originality/value In this work, laser surface texturing was used to reduce the friction and wear of Ti-6Al-4V specimens in water-based lubrication, which can be used to improve the tribological performance of Ti-6Al-4V components in mechanical equipment.

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Effect of laser surface texturing on tribological properties of polyimide composites in the application of traveling wave rotary ultrasonic motor

Cited by 14 publications

References 21 publications

Improved energy conversion efficiency of the ultrasonic motor with surface texture

Improved energy conversion efficiency of the ultrasonic motor with surface texture

State of the Art of Surface Texturing for Biotribology Applications

Effects of laser surface texturing on tribological properties of Ti-6Al-4V in hydroxyethyl-cellulose water-based lubrication

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