Enhanced permeation mechanism and tribological assessment of ultrasonic vibration nanolubricants grinding CFRP

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL Tribology International Pub Date : 2025-04-01 Epub Date: 2025-01-09 DOI:10.1016/j.triboint.2024.110494

Teng Gao , Jixin Liu , Xiaofeng Sun , Yanbin Zhang , Min Yang , Mingzheng Liu , Wenhao Xu , Qinglong An , Dazhong Wang , Peiming Xu , Changhe Li

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Abstract

CFRP precision grinding is a critical process in aeronautical industry. To enhance surface integrity, ultrasonic-assisted MQL grinding with nanolubricants was developed. The effects of ultrasonic on permeation mechanism and fluid dynamic pressure lubrication were investigated. The mechanical behavior of droplet anisotropic spreading, contact line dynamics, and capillary action was analyzed. Additionally, tribological properties of CFRP grinding surfaces with various fiber orientation angles were evaluated. The findings reveal contact angles in vertical grinding direction are higher than those in parallel direction. The application of 2D ultrasonic vibration decreased stable aspect ratio and increased spreading speed of droplets. Nanolubricants demonstrated significant improvements in reducing friction coefficient, grinding force ratio, wear area and volume, with a maximum reduction in friction coefficient of 34.87 %.

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超声振动纳米润滑剂磨削CFRP增强渗透机理及摩擦学评价

碳纤维布精密磨削是航空工业中的一项关键工艺。为了提高表面的完整性，研究了超声辅助纳米润滑剂MQL磨削技术。研究了超声波对渗透机理和流体动压润滑的影响。分析了液滴各向异性扩散、接触线动力学和毛细作用的力学行为。此外，还对不同纤维取向角CFRP磨削表面的摩擦学性能进行了评价。结果表明：垂直磨削方向的接触角大于平行磨削方向的接触角；二维超声振动的应用降低了液滴的稳定展弦比，提高了液滴的扩散速度。纳米润滑剂在降低摩擦系数、磨削力比、磨损面积和体积方面均有显著改善，最大摩擦系数降低34.87 %。

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来源期刊

Tribology International 工程技术-工程：机械

CiteScore

10.10

自引率

16.10%

发文量

627

审稿时长

35 days

期刊介绍： Tribology is the science of rubbing surfaces and contributes to every facet of our everyday life, from live cell friction to engine lubrication and seismology. As such tribology is truly multidisciplinary and this extraordinary breadth of scientific interest is reflected in the scope of Tribology International. Tribology International seeks to publish original research papers of the highest scientific quality to provide an archival resource for scientists from all backgrounds. Written contributions are invited reporting experimental and modelling studies both in established areas of tribology and emerging fields. Scientific topics include the physics or chemistry of tribo-surfaces, bio-tribology, surface engineering and materials, contact mechanics, nano-tribology, lubricants and hydrodynamic lubrication.