Article
Engineering, Mechanical
Fitsum B. Tewelde, Tianfeng Zhou, Jia Zhou, Weijia Guo, Bin Zhao, Xiangyu Ge, Wenzhong Wang, Xiaoli Wang, Xibin Wang
Summary: This study examined the impact of asymmetric surface texturing on directional friction in a dry environment. Asymmetric micro-grooves were created on an electroless nickel phosphorous (Ni-P) plated disk using a diamond cutting process. Sliding tests were conducted in both clockwise (CW) and counter-clockwise (CCW) directions against polyether-ether-ketones (PEEK) material at various texture densities. The results indicate that asymmetric surface texturing has a significant effect on directional friction. At a texture density of 70%, the friction coefficient in the CW direction increased by 28.1% compared to the CCW direction. The lowest texture density caused a 61.3% increase in friction coefficient during CW rotation compared to the reference untextured surface.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Nanoscience & Nanotechnology
Boya Li, Gao Cai, Xunzhang Li, Wenjing Sha, Xiaodong Shen, Tingwei Wang, Huaixia Zhao, Yangxin Wang, Jiaxi Cui
Summary: Researchers developed a switchable surface inspired by human fingertips, which exhibits high water sensitivity and surface variation in wet and dry states. The surface is constructed by utilizing the hygroscopicity of inorganic salt filler and 3D printing technology. Addition of fluorescent dye in the surface texture enables water-responsive fluorescent emitting, serving as a surface-tracing strategy. This switchable surface offers effective regulation of surface friction and demonstrates good anti-slip effects. The synthetic strategy reported provides a facile way for constructing a wide range of switchable surfaces.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Civil
Andrzej Dzierwa, Pawel Pawlus
Summary: The main objective of the study was to model wear of a disc subjected to dry contact with a ball in unidirectional sliding. Tribological tests were conducted, showing that wear volumes of the discs were influenced by the roughness heights of the surfaces, with a strong correlation between modeled and measured wear levels.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2021)
Review
Engineering, Mechanical
Zhiqiang Wang, Rihong Ye, Jinbo Xiang
Summary: This paper examines the importance of surface texture technology in reducing friction coefficient and enhancing friction performance. It provides an overview of the effects of textured shape, sliding speed, textured density, depth, and other factors on friction performance based on the research into the role of texture in reducing friction. The potential research directions for enhanced friction performance are also presented.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Engineering, Mechanical
Rita Ferreira, Oscar Carvalho, Luis Sobral, Sandra Carvalho, Filipe Silva
Summary: The radial surface coating layer of compression piston rings is used to improve wear resistance in internal combustion engines. However, the friction coefficient of the piston ring-cylinder liner pair at top dead centers negatively affects the engine's tribological performance. This study tested dimples with different texture dimensions and densities in a home-developed tribometer and found that the texture with an aspect ratio of 0.25 and a density area of 15% yielded the best tribological results.
Article
Engineering, Mechanical
N. Menga, F. Bottiglione, G. Carbone
Summary: We studied the dynamic behavior of a lattice of bristle-like elastic elements at the interface between a rigid still substrate and a rigid sliding slab. Complex bristles dynamics occur due to interactions with the moving slab, potentially altering the overall frictional response. Three main mechanisms of friction control were identified: modulation of local friction force based on relative velocity; misalignment between local relative velocity and slab velocity due to transverse vibration; and local friction coefficient variation due to normal load on the bristle. Results show that a significant reduction in friction force opposing slab motion can be achieved, depending on interface properties and involving self-excited bristle vibration. This research suggests possible mechanisms of friction control in different practical applications.
NONLINEAR DYNAMICS
(2023)
Article
Multidisciplinary Sciences
Yuanyuan Jiang, Zhijun Yan, Shengwei Zhang, Ziyu Shen, Haocheng Sun
Summary: This paper studies the impact of surface texture parameters and distribution patterns through numerical simulation and experiment. The results show that micro-texture can improve the bearing capacity of the oil film, and the distribution pattern of the texture array has an influence on its effect.
SCIENTIFIC REPORTS
(2022)
Article
Engineering, Mechanical
Maximillian Zimmer, Sorin-Cristian Vladescu, Lars Mattsson, Mark Fowell, Tom Reddyhoff
Summary: Based on experiments with reciprocating rig, it was found that macro-scale surface texture can reduce friction by up to 35% in the hydrodynamic regime. The Shear-Area Variation mechanism suggests that macro-texture can reduce contact area and increase shear-rate, leading to reduced friction and potential efficiency improvements in machines.
TRIBOLOGY INTERNATIONAL
(2021)
Article
Chemistry, Physical
Jae-Il Kim, Woo-Young Lee, Takayuki Tokoroyama, Noritsugu Umehara
Summary: Diamond-like carbon (DLC) is a promising solid lubricant, but its friction behavior with iron-and brass-based metals is inferior compared to titanium alloys. This study aims to improve the friction performance of DLC by modifying the contact interface from Fe/C to C/C through Ti addition. It is found that Ti promotes the development of carbon transfer on Fe-based counterpart and enhances the friction performance of DLC sliding against Fe by forming a thick carbonous transfer layer.
Article
Optics
Yayun Liu, Qi Zhu, Chuanyang Wang, Jiaqiang Li
Summary: This paper investigates the fabrication of biomimetic textures on CoCrMo artificial knee joints and their impact on friction performance. The results show that the textured joints exhibit better friction properties compared to non-textured joints, and samples with a scaly textured structure show the best friction performances. The mechanisms responsible for this enhancement are explained as micro-textures storing wear debris and lubricating fluid, as well as derivative-cutting behavior removing wear debris.
OPTICS AND LASER TECHNOLOGY
(2023)
Review
Engineering, Mechanical
Meng Li, Wenbin Shi, Jun Shi, Tao Wang, Liping Shi, Xiaolei Wang
Summary: This article provides an overview of the recent research progress in modifying the wet friction characteristics of soft elastomers through surface texturing. It discusses the physical mechanisms, methods of regulating wet sliding behaviors, and the prospects and challenges of texture design for soft materials.
Article
Engineering, Mechanical
Dmitrii Sergachev, David Matthews, Emile Van der Heide
Summary: This study investigates the creation of bidirectional friction using microscale ellipsoidal asperity textures, relying on the adhesive component of friction. Measurements showed higher friction coefficients perpendicular to the asperity major radii, with larger asperity dimensions leading to increased friction. Numerical analysis indicated that this effect is mostly related to elastic asperity deflection, and bidirectional friction differences can be controlled by asperity dimensions, spacing, and material properties.
Article
Chemistry, Physical
Linqing Bai, Jianxin Sun, Pengcheng Zhang, Zulfiqar Ahmad Khan
Summary: This study investigates the frictional behavior of a textured surface against various materials, showing that the performance is influenced by texture parameters and the friction pair materials. Different surface textures, such as circular dimples and grooves, play a positive role in improving friction and wear performance under specific operating conditions for certain friction pairs, while no improvement is seen for others. The results provide insight for enhancing bearing element performance in complex interacting systems.
Article
Engineering, Mechanical
Can Chen, Haoyuan Luo, Siyu Chen, Yangzezhi Zheng, Xiyin Liu, Tao Ma, Leyi Zhu
Summary: The Hilbert-Huang Transformation was used to extract relevant parameters from the pavement profile as a potential method for predicting friction coefficients with pavement texture parameters. A correlation analysis was conducted between these parameters and friction, considering the influence of velocity. A multiple linear regression model was developed to explore friction prediction, which demonstrated a reliable method for predicting friction coefficients.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Chemistry, Physical
Naizhou Du, Cunao Feng, Kai Chen, Jianghao Qiao, Dekun Zhang, Xiaowei Li
Summary: The friction behavior of amorphous carbon (a-C) films with different textured surfaces under lubrication condition was investigated using reactive molecular dynamics simulation. The introduction of a textured surface reduced the friction coefficient of a-C films under oil lubrication, but the efficiency depended on the depth and width of the textured surface, exhibiting different effects on hydrodynamic lubrication. These results provide insights into the friction mechanism of a-C films induced by surface texturing and can guide the development of efficient lubrication systems.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Wenye Ye, Mano Misra, Pradeep Menezes, Leslie T. Mushongera
Summary: This study focuses on the influence of grain boundary character on dopant segregation in nanocrystalline aluminum. The simulations reveal that dopants prefer to segregate to specific sites in the grain boundaries, and tilt boundaries exhibit periodic V-like clusters of atoms. High angle grain boundaries are more preferential for dopant segregation compared to low angle grain boundaries and tilt boundaries. Dopants can lower the energetic states of certain grain boundaries and increase the resistance of the material to deformation.
METALS AND MATERIALS INTERNATIONAL
(2023)
Review
Chemistry, Multidisciplinary
Akhil Kishore, Merbin John, Alessandro M. Ralls, Subin Antony Jose, Udaya Bhat Kuruveri, Pradeep L. Menezes
Summary: Ultrasonic nanocrystal surface modification (UNSM) is a unique mechanical impact-based method that can generate gradient nanostructured surface layers with remarkable mechanical properties. This review paper provides an overview of the current state-of-the-art UNSM technique, its effects on different mechanical properties and microstructure development, and explores its applications.
Article
Chemistry, Physical
Ting Liu, Md Hafizur Rahman, Pradeep L. Menezes, Ashlie Martini
Summary: The wettability of ionic liquids is influenced by the cation-anion pair. Specifically, for phosphonium ILs, the choice of anion affects the contact angle, and the contact angle decreases with increasing cation alkyl chain length. These trends were explained based on adhesive and cohesive energies in simulations, as well as atomic scale differences between the anions and cations.
JOURNAL OF PHYSICAL CHEMISTRY B
(2022)
Article
Chemistry, Physical
Md Hafizur Rahman, Ting Liu, Tatianna Macias, Manoranjan Misra, Manish Patel, Ashlie Martini, Pradeep L. Menezes
Summary: The friction and wear behavior of bio-based [P6,6,6,14][Sacc] and halogen-based [P6,6,6,14][NTF2] ionic liquids at steel sliding interfaces were studied. [P6,6,6,14][Sacc] had higher viscosity, better friction and wear protection, lower density, comparable thermal stability, more favorable wettability, and better corrosion performance compared to [P6,6,6,14][NTF2]. Simulations showed that the cohesion interaction energy was stronger for [P6,6,6,14][Sacc], contributing to its ability to form an effective adsorption film and reduce friction and wear across different temperatures.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Engineering, Mechanical
Alessandro M. Ralls, Mohammedreza Daroonparvar, Ashish K. Kasar, Manoranjan Misra, Pradeep L. Menezes
Summary: Friction stir processing improves the tribological and corrosion behavior of cold-sprayed 316L stainless steel deposits through localized grain refinement and closure of pores.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Engineering, Mechanical
Ashish K. Kasar, Md Hafizur Rahman, Brian D'Souza, Pradeep L. Menezes
Summary: A novel ceramic - phosphonium based ionic liquids (P-ILs) system is developed via vacuum impregnation to achieve superior tribological performance without continuous lubricant supply. The tribological performance of the P-IL+ceramic system depends on the thermal response of the ILs, which is further correlated with the density and viscosity of P-ILs controlling the supply of lubricants at the sliding interface.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Engineering, Chemical
Soumya Sikdar, Md Hafizur Rahman, Alessandro M. Ralls, Pradeep L. Menezes
Summary: In this study, the potential of plastic oil (PO) as a lubricant was investigated. Nano lubricants were formulated by incorporating graphene nanoplatelets (GNP) and hexagonal boron nitride (hBN) nano additives into the base PO. The nano lubricants showed improved tribological properties, with reduced coefficient of friction (COF) and wear volume compared to the base PO. These improvements were attributed to the polishing, mending mechanisms, and tribofilm formed on the interacting surfaces.
LUBRICATION SCIENCE
(2023)
Review
Chemistry, Physical
Alessandro M. M. Ralls, Mohammadreza Daroonparvar, Merbin John, Soumya Sikdar, Pradeep L. L. Menezes
Summary: Ni-based superalloys are widely used in the aerospace field due to their excellent thermal and mechanical stabilities at high temperatures. The cold spray (CS) process, a cost-effective and fast deposition technique, has shown potential in mitigating the defects associated with Ni-based superalloy fabrication. This review aims to bridge the knowledge gap by discussing the advantages of CS technology compared to thermal-reliant additive manufacturing techniques and elucidating the processing-structure-property relationships of CS-fabricated Ni superalloys.
Review
Materials Science, Multidisciplinary
Merbin John, Alessandro M. Ralls, Udaya Bhat Kuruveri, Pradeep L. Menezes
Summary: This paper summarizes the research progress on the laser shock peening (LSP) technique for reducing economic losses caused by high friction, wear, and corrosion in industrial applications. LSP has been widely applied to control the coefficient of friction, wear rate, and corrosion, particularly in aerospace, automotive, biomedical, nuclear, and chemical fields.
Article
Crystallography
Amanendra K. Kushwaha, Manoranjan Misra, Pradeep L. Menezes
Summary: In this investigation, cryomilling of pure aluminum and magnesium-doped aluminum powders was carried out to understand the effects of cryomilling time on crystallite size and the influence of magnesium dopant on grain boundary stability. The cryomilling process used liquid nitrogen and the powders were characterized using SEM, TEM, and XRD. The results showed that the size of crystallites decreased with increasing cryomilling duration for both pure aluminum and magnesium-doped powders. Furthermore, the preferential segregation of magnesium dopant at the grain boundaries provided stability to the cryomilled powders at elevated temperatures. This article discusses the mechanism behind the changes in crystallite size and the impact of magnesium dopant on grain boundary stability in aluminum powders.
Review
Chemistry, Physical
Alessandro M. Ralls, Kaitlin Leong, Jennifer Clayton, Phillip Fuelling, Cody Mercer, Vincent Navarro, Pradeep L. Menezes
Summary: Within the automotive field, there has been an increasing focus on the usability of combustion-independent electric vehicles (EVs). This is due to the popularity and practicality of EVs powered by Li-ion batteries (LIBs). However, there hasn't been a comprehensive review covering the current advancements of LIBs from economic, industrial, and technical perspectives. This literature review suggests that there is still room for overall advancement in EV-based LIBs, making it a hot topic for the coming years.
Review
Engineering, Mechanical
Md Hafizur Rahman, Sadat Shahriar, Pradeep L. Menezes
Summary: Machine learning algorithms have revolutionized various industries by addressing issues related to operation time, cost, and safety. In lubrication research, they have been extensively applied as well. This review provides a comprehensive overview of recent advancements in machine learning applied to lubrication research, focusing on four distinct categories. It discusses the significant contributions of artificial neural networks in predicting experimental parameters related to friction and wear, as well as the prediction of lubrication film thickness and identification of lubrication regime using logistic regression and artificial neural networks. Various algorithms, including support vector machine, polynomial regression, and artificial neural networks, are also employed to predict friction and wear under different experimental conditions. Additionally, they are utilized in condition monitoring for critical situations such as bearings and gearboxes. The review emphasizes state-of-the-art examples and discusses the current status and future possibilities of lubricant design facilitated by machine learning techniques.
Article
Engineering, Biomedical
Naima Valentin, Weijian Hua, Ashish K. K. Kasar, Lily Raymond, Pradeep L. L. Menezes, Yifei Jin
Summary: In this study, a direct ink writing method was developed to print cup structures at room temperature and form microscale porous structures within the acetabular cup through multistep heat treatment. The method employed a self-supporting titanium-6 aluminum-4 vanadium (Ti64) ink composed of Ti64 particles, bentonite yield-stress additive, ultraviolet curable polymer, and photo-initiator. The rheological properties and printability of the inks were systematically investigated by studying the effects of Ti64 and bentonite concentrations. Printing conditions, geometrical limitations, and maximum curing depth were also explored. Complex 3D structures, including lattices with different gap distances, honeycomb with a well-defined shape, and an acetabular cup with uniformly distributed micropores, were successfully printed/fabricated to validate the effectiveness of the proposed method.
BIO-DESIGN AND MANUFACTURING
(2023)
Review
Materials Science, Ceramics
Subin Antony Jose, Merbin John, Pradeep L. Menezes
Summary: Cermet is an advanced material that combines a hard ceramic phase with a metallic binding phase, offering superior properties for high-temperature, tribological, and machining applications. This review provides a comprehensive overview of various cermet systems, focusing on their development, properties, and applications, particularly those based on tungsten carbide, titanium carbide, titanium carbonitride, and aluminum oxide. The influence of different metallic binders and their composition on the tribological and mechanical properties of these cermet systems is discussed. The review also examines common processing techniques and their parameters, and highlights the applications and challenges of cermet systems.
CERAMICS-SWITZERLAND
(2022)
Review
Chemistry, Physical
Merbin John, Orlando Diaz, Andres Esparza, Aaron Fliegler, Derek Ocenosak, Carson Van Dorn, Udaya K. Bhat, Pradeep L. Menezes
Summary: High entropy alloys (HEAs) are a remarkable innovation in materials science and engineering in the early 21st century, exhibiting superior mechanical properties. This article provides a comprehensive overview of welding techniques for HEAs, including fusion-based welding and solid-state welding, and discusses the microstructural features and mechanical properties of welded HEAs using different techniques. Furthermore, potential challenges in the welding of HEAs are also discussed.