Article
Materials Science, Multidisciplinary
Yue Ding, Wei-Ke Yuan, Xuan-Ming Liang, Gang-Feng Wang, Xinrui Niu
Summary: This work investigates spherical indentations on elastic-perfectly plastic materials and strain-hardening materials using finite-element method (FEM) simulations. A new method is proposed to extract the yield strength and strain-hardening exponent directly from spherical indentation. The deviation of nominal contact pressure from Hertzian prediction is used to determine the plastic parameters, and the difference between Hertzian contact pressure and real contact pressure is investigated for contact radius estimation. The validation of this method shows good agreement between analytical stress-strain relationships and FEM simulations.
ADVANCED ENGINEERING MATERIALS
(2022)
Article
Engineering, Mechanical
Soumya Ranjan Guru, Mihir Sarangi
Summary: The scratch method has attracted attention in the research community due to its various applications. However, studying tribological characteristics of polymers such as friction and wear has been challenging. This study used a constant loading scratch method with a Rockwell indenter to develop a model for calculating wear and friction. Experimental results showed that the number of scratch passes had an impact on groove width, penetration depth, residual depth, recovery percentage, friction coefficient, and volumetric wear. The study derived two models with a low margin of error, providing a valuable tool for evaluating polymer characteristics.
TRIBOLOGY TRANSACTIONS
(2023)
Article
Multidisciplinary Sciences
Tatsunori Tomota, Mamoru Tohyama, Kazuyuki Yagi
Summary: This study developed and applied colorimetric optical interferometry to observe contact states directly and clarify contact phenomena. The experimental results validated the effectiveness of contact theory and simulation with very small roughness and demonstrated the advantages of this measurement technique.
SCIENTIFIC REPORTS
(2022)
Article
Engineering, Mechanical
Gaurav Chauda, Daniel J. Segalman
Summary: Problems of elastic frictional contact are of great engineering relevance and historically difficult to analyze, a novel contact algorithm, the Method of First Violation, has been introduced to address the deficiency identified in traditional methods and demonstrated its generality and robustness on contact problems with a nontraditional friction model.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2021)
Article
Biophysics
Saya Shagymgereyeva, Bauyrzhan Sarsenbekuly, Wanli Kang, Hongbin Yang, Sarsenbek Turtabayev
Summary: This review provides an overview of the application of polymer microspheres in enhancing oil recovery levels in heterogeneous reservoirs. The specific structural and behavioral traits of different types of polymer microspheres, as well as their preparation methods and performance evaluation, are discussed. The current challenges and possible improvements in the functional application of polymer microspheres are also considered. This review will assist researchers in advancing the development of polymer microspheres for increased oil recovery in an economically and ecologically sustainable manner.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2024)
Article
Mathematics, Interdisciplinary Applications
Yanxiao Zheng, Qunhong Li, Wei Zhang, Jinfeng Lei
Summary: This paper studies the three-dimensional mapping of the capsule system with bilateral elastic constraints, which is rarely seen in the literature. The bilaterally constrained elastic system is suitable for small-scale capsule models. Compared with the unilaterally constrained elastic capsule system, the bilaterally constrained elastic system has a more complex switching mechanism on the boundary, a larger number of local mappings, and a richer whole motion process and bifurcation.
CHAOS SOLITONS & FRACTALS
(2023)
Article
Materials Science, Multidisciplinary
B. Wu, J. S. Mendez Harper, J. C. Burton
Summary: Hydrogels pressed against smooth surfaces exhibit time-dependent frictional behavior characterized by sliding-induced relaxation and quiescent recovery processes. The friction coefficient decays exponentially to a steady-state value, with the time constant varying exponentially with sliding velocity. Frictional shearing of the interface can imprint an observable memory on the material, visible after 24 hours of repeated friction.
EXPERIMENTAL MECHANICS
(2021)
Article
Engineering, Mechanical
Yichun Xia, Akihiko Yano, Noriyuki Hayashi, Norihisa Horaguchi, Guoxin Xie, Dan Guo
Summary: Contact temperature significantly affects the friction and wear performance of polymers. This study conducted a simulation using the total heat flux method to obtain the contact temperature of friction between polymer and steel, and found that this method is more consistent with experimental results. Factors affecting friction temperature and heat partitioning coefficient were analyzed through experiments and simulations. This study provides a reference for more accurate evaluation of friction temperature between polymer and steel.
TRIBOLOGY INTERNATIONAL
(2022)
Article
Multidisciplinary Sciences
Joachim Gwinner
Summary: This note presents a novel frictional unilateral contact problem in finite-strain elasticity and analyzes it using the polyconvexity approach to nonlinear elasticity. The author also proposes a smoothing procedure for tackling the non-smooth term in friction and provides a convergence result for this new method.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2022)
Article
Nanoscience & Nanotechnology
Chelsea S. Davis, Mitchell L. Rencheck, Jeremiah W. Woodcock, Ryan Beams, Muzhou Wang, Stephan Stranick, Aaron M. Forster, Jeffrey W. Gilman
Summary: Investigating scratch damage in polymer coatings using fluorescence lifetime imaging microscopy (FLIM) and mechanically activated mechanophores (MP) in epoxy coatings allows for the detection of microscale scratches and molecular scale changes. The fluorescence behavior of activated MPs can be utilized to identify ductile and fracture-dominated processes during scratch application, providing additional insights into local environments and molecular structures. The approach of using mechanophores and scratch deformation enhances the optical characterization of damage zones and leads to novel defect detection strategies.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Multidisciplinary
Yigit Karpat
Summary: This study investigates the relationship between elastic recovery and friction during ductile mode machining of monocrystalline silicon. Experiment and model were used to analyze the influence of groove depth on the elastic recovery ratio. The findings can be applied to the process planning of advanced optics manufacturing.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
N. Menga, G. Carbone, D. Dini
Summary: The study found that even purely elastic thin coatings can experience additional friction due to normal-tangential coupling, and that viscoelastic coatings may exhibit enhanced friction and larger bulk energy dissipation as a result of coupling. Geometric coupling also leads to increased contact area compared to uncoupled contacts, especially involving significantly stiffer substrate.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2021)
Article
Engineering, Mechanical
Simei Peng, Linyuan Luo, Renzhao Wu, Zhuwu Yi, Yishun Wuliu, Pu Shi, Jin Zhu, Jianxiang Feng, Yuejun Liu
Summary: We have developed a novel method to synthesize a multifunctional anti-scratch agent (BCP) using biomass cardanol and investigated its impact on polypropylene (PP) properties. The analysis of scratch behavior showed that the incorporation of BCP greatly improved scratch visibility and reduced scratch depth, color difference and kinetic friction coefficient for PP, which was attributed to the formation of a lubricating layer induced by BCP migration onto the polymer surface. Furthermore, the addition of BCP significantly increased the initial thermal decomposition temperature of PP and improved its impact strength, mainly due to BCP intramolecular synergism. Additionally, the concept of the novel green BEP enriches the design of polymer additives and has the potential to be applied in other biomass functionalization with multifunctional variations.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Mechanics
Benat Gurrutxaga-Lerma
Summary: An analytic formulation is presented for the study of planar elastodynamic contact in bimaterial interfaces subject to dry friction and slip. The elastic waves scattered by a planar contact interface are analytically expressed using the Wiener-Hopf technique. The magnitude of the stick and slip regions at the interface can be determined using the derived formulation, providing a complete analytic understanding of the interfacial tractions and allowing for modeling of elastic wave scattering in various fields.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2023)
Article
Nanoscience & Nanotechnology
Chaochen Xu, Shuai Zhang, Hongzhi Du, Tao Xue, Yilan Kang, Yang Zhang, Pei Zhao, Qunyang Li
Summary: Research has shown that the frictional characteristics of graphene can be adjusted by applying strain. In an experiment where graphene is deposited onto a stretchable substrate, it was found that the friction of supported graphene decreases with increasing strain, but the system shows two distinct friction regimes with significantly different strain dependences depending on the adherence state of the graphene/substrate interface.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Polymer Science
A. Chemtob, H. De Paz-Simon, M. Sibeaud, B. El Fouhali, C. Croutxe-Barghorn, L. Jacomine, Ch. Gauthier, V. Le Houerou
EXPRESS POLYMER LETTERS
(2016)
Article
Materials Science, Multidisciplinary
A. Al-Kawaz, A. Rubin, N. Badi, C. Blanck, L. Jacomine, I. Janowska, C. Pham-Huu, C. Gauthier
MATERIALS CHEMISTRY AND PHYSICS
(2016)
Article
Chemistry, Applied
A. Rubin, D. Favier, P. Danieau, M. Giraudel, J-P. Chambard, C. Gauthier
PROGRESS IN ORGANIC COATINGS
(2016)
Article
Instruments & Instrumentation
L. Fu, D. Favier, T. Charitat, C. Gauthier, A. Rubin
REVIEW OF SCIENTIFIC INSTRUMENTS
(2016)
Article
Chemistry, Multidisciplinary
Florian Ponzio, Vincent Le Houerou, Spyridon Zafeiratos, Christian Gauthier, Tony Gamier, Loic Jierry, Vincent Ball
Article
Chemistry, Applied
V. Divry, L. Jacomine, V. Le Houerou, D. Collin, C. Gauthier, Y. Holl
PROGRESS IN ORGANIC COATINGS
(2017)
Article
Instruments & Instrumentation
P. Chapuis, P. C. Montgomery, F. Anstotz, A. Leong-Hoi, C. Gauthier, J. Baschnagel, G. Reiter, G. B. McKenna, A. Rubin
REVIEW OF SCIENTIFIC INSTRUMENTS
(2017)
Article
Mechanics
Joseph Lejeune, Vincent Le Houerou, Thibaud Chatel, Herve Pelletier, Christian Gauthier, Rolf Muellhaupt
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2018)
Article
Mechanics
M. Dabo, T. Roland, G. Dalongeville, C. Gauthier, P. Kekicheff
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2019)
Article
Mechanics
Alexander Rassloff, Sascha Heitkam, Gaetan Dalongeville, Christian Gauthier, Thierry Roland
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2020)
Article
Chemistry, Multidisciplinary
Remi Merindol, Seydina Diabang, Randy Mujica, Vincent Le Houerou, Thierry Roland, Christian Gauthier, Gero Decher, Olivier Felix
Article
Engineering, Mechanical
Benoit Wittmann, Christian Gauthier, Alain Burr, Jean-Francois Agassant, Damien Favier, Pierre Montmitonnet, Alain Casoli
Article
Chemistry, Applied
B. Wittmann, P. Montmitonnet, A. Burr, C. Gauthier, J-F. Agassant, A. Casoli
Summary: In this study, a microfacet-based model was developed to predict the optical properties of eight polyurethane coatings with different roughnesses and glosses. The model showed good prediction capabilities, particularly in estimating the measured 60 degrees gloss values.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Chemistry, Physical
Andreas Hausberger, Marina Pecora, Damien Favier, Elisabeth Rossegger, Martin Tockner, Thomas Ules, Matthias Haselmann, Sandra Schloegl, Christian Gauthier
Summary: Structured surfaces have potential to serve as functionalized surfaces by specifically influencing friction and deformation behaviors. This study investigated the influence of different structures on surface friction behavior and its relation to real area of contact.
Proceedings Paper
Crystallography
P. C. Montgomery, P. Chapuis, A. Leong-Ho, F. Anstotz, A. Rubin, J. Baschnagel, C. Gauthier, G. Reiter, G. B. McKenna
INERA WORKSHOP 2016: MEMBRANE AND LIQUID CRYSTAL NANOSTRUCTURES (MELINA 2016)
(2017)
Article
Engineering, Mechanical
Yankui Song, Ke Xiao, Guo Xiang
Summary: The novelty of this study lies in constructing an Entropy-based wear and fluid-solid-thermal (FST) coupled model for journal bearings, and revealing the transient interaction behavior between wear evolution and FST evolution during repeated starting and stopping. The wear rate is measured experimentally, and the contact temperature, friction coefficient and normal contact force are obtained from the validated FST model. Wear tests and numerical calculations are conducted to validate the predicted wear rate and investigate the time-varying wear and FST evolution of journal bearings.
Article
Engineering, Mechanical
Xin-long Liu, Xin Guan, Yuan Zhong, Qian Xiao, Yong Cao, Wu-lue Zhang, Song Zhang, Yi-ting Zheng, Ming-sheng Gao, Dao-yun Chen, Wen-bin Yang
Summary: Gaps in the conductor rail joints of intercity trains have an impact on current transmission and the wear of carbon skateboards. These gaps decrease the coefficient of friction, increase electrical contact resistance, and affect the wear rate of carbon skateboards.
Article
Engineering, Mechanical
Yuhang Wu, Conglin Dong, Xiuqin Bai, Chengqing Yuan
Summary: The study developed a new composite material by incorporating hexagonal boron nitride (h-BN) particles into a thermoplastic polyurethane (TPU) matrix, which exhibited excellent self-lubricating properties and reduced frictional excitation forces. The addition of h-BN particles effectively reduced the coefficient of friction, decreased fluctuation amplitude, enhanced wear resistance, and attenuated vibration behaviors.
Article
Engineering, Mechanical
Tiancheng Ouyang, Xiuyang Sun, Wentao Tang, Yinxuan Li, Zhi Qun Tian, Yanzhou Li
Summary: By adding nitrogen-doped graphene and C60 nanoparticles to the lubricant, a highly efficient nano-lubricant with vibration and noise reduction properties is synthesized.
Article
Engineering, Mechanical
Xin Zhuo, Jun Cao, Haibo Huang, Li Liu, Xinkun Suo, Peiqing Ye, Zeshan Abbas
Summary: A polymer coating prepared by liquid spraying technology on the surface of 20CrMo steel demonstrates good tribological and anti-cavitation erosive properties. It can effectively replace CuPb24Sn copper alloy in valve plates for pumps under different lubrication conditions. The coating exhibits adhesive wear and reduces frictional loss, and mainly shows abrasive wear under complex working conditions. Its lipophilicity, high hardness to elastic modulus ratio, and corrosion resistance are the main influencing factors for its performance.
Article
Engineering, Mechanical
Md. Aminul Islam, Jiaren (Jimmy) Jiang, Yongsong Xie
Summary: Erosion-corrosion is a major factor in material loss and reduced useful life of hydro-transport equipment. This study evaluates the erosion-corrosion characteristics of different materials and finds that matrix wear affects the degradation of carbides. Sufficient wear and corrosion resistance in the surrounding matrix are important for good erosion-corrosion resistance.
Article
Engineering, Mechanical
Andre Dubois, Oussama Filali, Laurent Dubar
Summary: This study investigates the effect of surface roughness, contact pressure, and lubrication on the onset of galling in aluminum 6082-T6 using a pin-on-plate tribometer. The experimental results show that the roughness and lubricants play a significant role in preventing galling.
Article
Engineering, Mechanical
Jizhan Wu, Peitang Wei, Guoqiang Liu, Difa Chen, Xiuhua Zhang, Taimin Chen, Huaiju Liu
Summary: This study conducted a comprehensive evaluation of the DLC coating treatment on the loading capacity of gears and characterized the surface features and fatigue performance. The results demonstrate that DLC coating significantly improves the hardness and surface residual compressive stress of the gears, as well as enhances their contact fatigue performance.
Article
Engineering, Mechanical
Yangping Liu, Hwaran Lee, Annsley Mace, Jeremy L. Gilbert
Summary: An AFM-based single asperity tribology method was used to investigate the wear performance of carbides and base metal matrix in high carbon CoCrMo alloy. The wear behavior of the two types of carbides was stress-dependent and influenced by chemical composition. Cr-rich carbides exhibited higher wear resistance compared to Mo-rich carbides.
Article
Engineering, Mechanical
Zdenek Riha, Michal Zelenak, Akash Nag, Jakub Poloprudsky, Tomas Kruml, Sergej Hloch
Summary: This study investigates the erosion performances of a high-speed modulated jet (MWJ) and continuous water jet (CWJ). By comparing different nozzles and water jet powers, the effects of modulated and continuous jets on aluminum alloy were studied. The results show that under certain conditions, modulated jet can create deeper and sharper grooves while reducing the impact of lateral flow.
Article
Engineering, Mechanical
Chunyu Yu, Weipu Li, Yang Guo, Xianbin Sun, Fanli Hong, Ning Sun, Qinghai Zhang
Summary: This study explores the relationship between the wear rate of train brake pads and its features, and proposes a method for predicting the wear rate suitable for small sample data. Grey relational analysis and Pearson correlation analysis are used to determine the preferred features that affect the wear rate, and a BOA-BP model is established for prediction. The results show that BOA-BP exhibits better advantages in prediction with small samples.
Article
Engineering, Mechanical
Shan Yin, Xin Zhao, Shuangchao Huang, Zefeng Wen, Xuesong Jin
Summary: This study simulated the rolling contact of a driving wheelset over tangent and curved tracks at a speed up to 500 km/h using an explicit finite element approach to derive creep curves. The comparison between quasi-steady curves and transient curves in the presence of rail corrugation helped to identify cases where traditional theories are inapplicable and where transient effects must be considered. Additionally, the study further analyzed the influence of middle/high-frequency vibrations in the presence of rail corrugation.
Article
Engineering, Mechanical
Jiyao Zhang, Yuanlie Yu, Junlei Tang, Yingying Wang, Honggang Sun, Kaikai Song, Jianhong Gong, Pingping Liu, Xiaoming Liu, Lina Hu, Parthiban Ramasamy, Juergen Eckert
Summary: The influence of high-carbon addition on the microstructure, hardness, and wear behavior of CoCrNi alloy was investigated. It was found that the addition of carbon resulted in the formation of carbide particles, enhancing the hardness and improving the wear resistance. Fracture and detachment of hard carbides during friction introduced additional abrasive particles, transitioning the wear mechanism from adhesive-dominated to abrasive-dominated.
Article
Engineering, Mechanical
Yanfei Liu, Shengtao Yu, Ruize Zhang, Xiangyu Ge, Wenzhong Wang
Summary: This study reports the tribological behavior of nanodiamond plate (NDPL) as a nanoadditive for the first time and compares it with nanodiamond particles (NDPA). The results show that NDPL provides better lubrication performance at higher concentrations, and the sliding between NDPLs and the structural transformation from sp3 to sp2 carbon play a crucial role in lubrication and wear resistance.
