...Kai Feng; Ziqi Song; Jing Ni; Xiaozhen Wang; Mingyang Du The broaching process is a heavy-duty and highly efficient metal-cutting technique. The heavy load encounters significant thermal and mechanical stresses on the tool during broaching, resulting in considerable friction within the tool–chip...

.... Raising the annealing temperature further results in a rise in average grain diameter, which significantly reduces microhardness. The inverse pole figure study reveals the existence of <001> and <111> texture in annealed high-entropy alloys. The coefficient of friction shows that high-entropy...

... behavior at the surfaces of the rib and roller end. In this study, a model of cylindrical roller bearings was developed under combined load. In the model, the quasi-dynamic calculation was coupled with the elastohydrodynamic lubrication program to evaluate axial load-carrying capacity and frictional loss...

...Rajesh Kannan Kasi; Vaira Vignesh Ramalingam; Dhinakaran Veeman; M. Govindaraju Sintered friction materials contribute to efficiency and effectiveness in various domains, encompassing high-performance racing cars, motorcycle clutches, industrial brakes designed for machinery and equipment, railroad...

... Contributed by the Tribology Division of ASME for publication in the J ournal of T ribology . 30 10 2024 27 02 2025 27 02 2025 06 03 2025 abrasion coatings friction wear wear mechanisms Accepted Manuscript Not Copyedited Journal of Tribology. Received October 30, 2024...

...Jiang Wei; Kun Liu; Xiaojun Liu; Yi Feng; Jiaxin Ye Previous studies have established the critical role of tribochemistry in the formation of protective transfer films in dry friction applications of polytetrafluoroethylene (PTFE) composites. However, the specific mechanisms driving these reactions...

...Henry Ing; Vimanyu Chadha; Anna Randolph; Ky Reifler; Tevis Jacobs; Kurt Beschorner Shoe-floor friction, quantified by the coefficient of friction (COF), is an important predictor of the risk of slip-and-fall accidents. There is a commonly used model of friction by B. Persson that describes...

.... A ring-block friction experiment was conducted under simulated drilling conditions, examining groove textures with various geometric parameters. The effects of groove texture parameters—depth, area ratio, skew angle, and width—on the tribological performance were analyzed using friction coefficient, wear...

... for publication in the J ournal of T ribology . 30 08 2024 11 02 2025 11 02 2025 03 03 2025 fluid friction friction gears lubricant additives lubricants tribological systems viscosity It is now widely recognized that climate change is caused by CO2 emissions...

...Sikta Panda; Gaurab Kumar Ghosh; Ritesh Kumar Patel; Subrata Kumar Ghosh; Sandeep Bhoi Effective lubrication is one of the most vital aspects for desirable productivity in mechanical systems. This can be achieved through reduced friction and wear between mating components by proper lubrication...

... (LGWOA-AFWStacking) to predict the tribological properties of small sample composite lithium-based grease. The tribological test selected ILs-WS 2 and ILs-MoS 2 as additives and used MFT-R4000 reciprocating friction and wear machine to investigate the tribological properties of lubricating grease...

...Michele Ciavarella; Emanuel Willert We study the effect of elastic material grading close to the surface in line contacts with friction on internal stresses, particularly to quantify the reduction of tensile principal stresses due to grading. We observe that for the classical indentation...

... the friction pair while discharging the working medium synchronously. However, the step structure inevitably influences the film's characteristics and has unclear effects on friction and leakage performance. Therefore, the lubrication and deformation model of the step piston, verified by comparison...

.... The improvement in motor oil performance with the addition of CB was evident in the mixed lubrication regime, with a more than 20% reduction in frictional and wear losses compared to the reference motor oil. This improvement in the oil's lubrication performance is attributed to the presence of CB particles...

... of friction occurring at the bearing edge. Therefore, it is imperative to investigate the hydrostatic thrust bearings' dynamic characteristics when subjected to offset load conditions. Fang et al. studied the effect of spindle deviation of hydrostatic bearings on the static and dynamic characteristics...

..., an analysis of the tribological performance of potential coating material candidates was conducted. This study focuses on evaluating the friction and wear characteristics of various coatings widely used by industry for surface protection, including carbides, nitrides, diamond-like carbon (DLC), and solid...

...Honghao Zhao; Mingxuan Wang; Yuquan Liu; Ping Deng; Xin Hu; Fei Guo Under varying working conditions, friction between polymers and metals leads to surface wear of materials, accompanied by significant energy dissipation, part of which transforms into friction noise. Despite their high nonlinearity...

.... These dual effects result in PPIs with larger pores displaying a low friction coefficient at low speeds but a high friction coefficient at high speeds. The effect of pore sizes on EHD film and Stribeck curves were discussed from seepage effect and viscoelasticity of PPI, respectively. The permeability...

... Figure Surface power density ψ for an exemplary operation point with mLL gear and MIN10 oil Surface power density ψ for an exemplary operation point with mLL gear and MIN10 oil gears power loss coefficient of friction efficiency temperature mesh-local contact area elastohydrodynamic...

... was investigated, as well as its friction and wear resistance performance. The Vickers microhardness of the carbon-coated NiTi alloy decreased with the flame coating time, which was identified to be caused by the inherent thermal treatment during the flame coating process. The tribological test results indicated...