Article
Engineering, Mechanical
Feng Nan, Dong Wang
Summary: The tribological properties of attapulgite as a lubricant additive on electric-brush plated Ni coating were investigated. Results showed that an appropriate amount of attapulgite significantly improved the friction-reducing and antiwear properties of 150 SN lubricating oil on the Ni coating. A tribofilm composed of Ni, NiO, SiO2, Al2O3, graphite, and organic compounds was formed on the worn surface under the action of attapulgite, which contributed to the reduction of friction and wear.
Article
Engineering, Mechanical
Bo Yu, Kai Wang, Xianjuan Pang, Gensheng Wu, Jibin Pu, Haichao Zhao
Summary: By grafting octadecylamine onto graphene oxide through a simple amidation reaction, ODA-RGO was obtained as a lubricant additive, showing beneficial effects on lubrication and friction-reduction. The excellent tribological behavior was attributed to the formation of a protective film and the restacked shape of ODA-RGO.
TRIBOLOGY INTERNATIONAL
(2022)
Article
Engineering, Mechanical
Kunpeng Wang, Huaichao Wu, Hongdong Wang, Yuhong Liu, Lv Yang, Limei Zhao
Summary: The study prepared molybdenum-dotted nanoplatelets using an aqueous miscible organic solvent treatment method, enhancing the specific surface area and dispersion of attapulgite. The nanoplatelets showed excellent tribological properties and self-repairing ability in an oil-based lubricant system.
Article
Materials Science, Multidisciplinary
Robar Arafat, Christian Koehn, Annelise Jean-Fulcrand, Tim Abraham, Georg Garnweitner, Christoph Herrmann
Summary: This study investigated the usability of Al2O3, ZrO2, and TiO2 nanoparticles in water-glycerine based nanofluids as MQL-cutting fluids in tribological tests. The physical-chemical properties and behavior of the nanofluids were assessed, and the influence of these properties on wear and particle deposition on steel workpieces was evaluated.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Mechanical
Qiulong Gao, Shuwen Liu, Kaiming Hou, Xiaonan Miao, Zhangpeng Li, Jinqing Wang
Summary: Environment-friendly and sustainable deep eutectic solvents (DESs) are regarded as a new type of lubricant. MoSx/rGO nanohybrids were synthesized and used as lubricant additive to improve the tribological performance of DES. The nanohybrids demonstrated excellent dispersibility in DES. Tribological tests showed that adding 1.5 wt% MoSx/rGO to DES resulted in the best lubrication performance for steel tribopair, reducing friction by 31.2% and wear by 88.2%, attributed to the synergistic effect between MoSx/rGO nanohybrid and DES. The attachment of nanohybrids to the friction interface, which triggered the formation of a robust tribofilm, was responsible for the superior lubricating properties of DES containing nanohybrids. These findings offer new insights for enhancing the tribological performance of DES by incorporating effective additives.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Engineering, Mechanical
Zhixiang Li, Kunhong Hu, Yong Xu, Enzhu Hu, Xianguo Hu
Summary: A novel method to improve the dispersion and lubrication of nano-MoS2 in ester oil was proposed. The synthesized S-MoS2/sericite catalyst remained in DBA with a high content and the dispersion system showed good long-term stability. The dispersion system reduced friction and wear by forming a lubricating film or embedding in the soft surface under different conditions.
TRIBOLOGY INTERNATIONAL
(2022)
Article
Engineering, Mechanical
Hailong Liu, Yajing Huang, Yaozhu Wang, Xiaomin Zhao, Danqing Chen, Guohua Chen
Summary: The span80-coated anthracite sheets showed excellent tribological properties, good dispersion stability in oil, and reduced friction coefficient, wear scar diameter, and wear volume. The combination of crystalline and amorphous carbon in anthracite sheets formed a protective film, leading to decreased wear on the friction pair, and achieving effective friction reduction and anti-wear effects in a wide range of conditions.
Article
Materials Science, Multidisciplinary
Xianbin Hou, Xiang Liu, Leyang Dai, Yuhao Yang, Jinhong Du, Yongjian Wang, Hong Wan, Xiang Rao
Summary: Abnormal wear of the cylinder liner and piston ring in a marine diesel engine can lead to engine failure and significant energy loss. This study prepared a potassium borate/graphene (PB/GN) nano-composite lubricant additive suitable for marine diesel engines and investigated its tribological properties in 500N base oil. The results showed that the PB/GN nano-composite additive significantly improved the tribological performances of the base oil due to the thermal conductivity of graphene and the tribofilms formed on the worn surface.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Chemistry, Multidisciplinary
Raimondas Kreivaitis, Milda Gumbyte, Arturas Kupcinskas, Jolanta Treinyte, Kiril Kazancev, Egle Sendzikiene
Summary: Lubrication is vital for reducing friction and wear, but traditional lubricants can cause pollution. This study proposes using coffee oil from spent coffee grounds to improve the lubricity of water-based lubricants. Bis(2-hydroxyethyl)ammonium oleate protic ionic liquid helps in dispersing coffee oil in water, enhancing its tribological properties.
APPLIED SCIENCES-BASEL
(2023)
Article
Materials Science, Multidisciplinary
Hongmei Xie, Yongyi Wei, Bin Jiang, Changping Tang, Chaoyin Nie
Summary: The study evaluated the tribological properties of carbon nanotube/spherical SiO2 nanoparticle combinations as lubricant additives in deionized water, demonstrating their superior performance, particularly the combination with a mass ratio of 0.2:0.3.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Review
Chemistry, Physical
Jia Leang Teh, Rashmi Walvekar, Thachnatharen Nagarajan, Zafar Said, Mohammad Khalid, Nabisab Mujawar Mubarak
Summary: This review presents the recent research on the tribological performance of non -water miscible lubricants. It discusses the tribological properties of various lubricants, such as vegetable oil, blend oil, synthetic oil, ionic liquid, as well as the use of nanoparticles. The findings suggest the need for further research on oil-miscible ionic liquids for mineral, vegetable oils, and nanolubricants. The review also explains the characteristics of nanolubricants, including dispersion stability, viscosity, thermal conductivity, thermal-oxidative stability, and tribological performance. Future recommendations for lubricant research are also discussed.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Engineering, Mechanical
Dawit Zenebe Segu, Younghun Chae, Sung-Jun Lee, Chang-Lae Kim
Summary: This study investigates the combined use of nanofluids and laser surface texturing (LST) to improve tribological performance. ZrO2-MoDTC hybrid nanoparticles at different concentrations were added as lubricant additives in base oil. Steel pin surfaces were textured using laser ablation to create microtextured patterns of different shapes and sizes, and their tribological performance was evaluated. Circular dimple textured (DT) surfaces with 0.5 wt% ZrO2-MoDTC hybrid nanofluid demonstrated superior friction reduction and anti-wear performance compared to cross-groove textured (GT) and untextured (UT) surfaces. The average friction coefficient of DT was reduced by approximately 24-28% and 57-60% compared to GT and UT surfaces, respectively. The worn surface analysis indicated excellent tribological performance due to the synergistic effects of the nanofluid and LST.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Chemistry, Physical
Qing Feng, Fukang Deng, Kangchun Li, Mingyuan Dou, Shuai Zou, Fuchuan Huang
Summary: MXene material Ti3C2 was chemically modified with TDPA to obtain TDPA-Ti3C2, which was dispersed in castor oil. The addition of 0.1 wt% TDPA-Ti3C2 significantly reduced the coefficient of friction and wear rate of the castor oil.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Engineering, Mechanical
Halley Welther Jacques Dias, Alessandra Batista Medeiros, Cristiano Binder, Joao Batista Rodrigue Neto, Jose Daniel Biasoli de Mello
Summary: In this study, Fe-SiC composites were obtained using powder technology, with SiC particles acting as precursors to generate a large amount of turbostratic graphite dispersed in the composite matrix. The alloy composition was selected using Thermo-Calc(R) software to stabilize the graphite phase in iron, leading to high yield. Extracted turbostratic 2D graphite particles dispersed in mineral oil showed reduced friction coefficient and wear rate compared to pure mineral oil or mineral oil with commercial graphite particles added, attributed to the low degree of interaction between the atomic planes due to misorientation and increased interplanar distances of turbostratic graphite.
Article
Engineering, Mechanical
Min Ji, Shuhai Liu, Huaping Xiao, Haoyang Li
Summary: This paper investigated the tribological behavior of two synthesized microcapsules filled with ionic liquids as smart tribological additives for water-based drilling mud. The experimental results showed that both microcapsules effectively reduced friction, with a significant decrease in coefficient of friction. The study also demonstrated the correlation between microcapsule responses and load stimuli, suggesting the potential for large-scale applications of smart lubrication.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Hongyu Xiao, Jiwei Geng, Yugang Li, Hongping Li, Dong Chen, Mingliang Wang, Zhuguo Li, Haowei Wang
Summary: In this study, the quench sensitivity of TiB2/7050Al composite was investigated using Jominy end quench test. It was found that the hardness decreased significantly with increasing distance from the quenching end, as more eta phases precipitated and coarsened on grain boundaries. The composite was observed to be more quench sensitive than its alloy counterpart, attributed to four microstructure characteristics inherited from the aluminum matrix and originating from the TiB2 addition.
JOURNAL OF MATERIALS RESEARCH
(2021)
Article
Nanoscience & Nanotechnology
Zhihui Xiong, Xiaotong Pang, Shilong Liu, Zhuguo Li, R. D. K. Misra
Summary: The addition of nickel (Ni) in selective laser melted titanium alloy can effectively refine grain size, avoid the formation of brittle phases, and significantly increase the strength and ductility of the alloy. Microalloying with Ni enhances the properties of titanium alloys processed by additive manufacturing.
SCRIPTA MATERIALIA
(2021)
Article
Nanoscience & Nanotechnology
Bolun Han, Chengcheng Zhang, Kai Feng, Zhuguo Li, Xiancheng Zhang, Yao Shen, Xiaodong Wang, Hiroyuki Kokawa, Ruifeng Li, Zhiyuan Wang, Paul K. Chu
Summary: The study fabricated a near full-dense hierarchical CrCoNi medium entropy alloy (MEA) using selective laser melting (SLM), achieving superior yield strength at 77K. The high strength of the material stems from a hierarchical microstructure composed of high-density dislocations and low-angle grain boundaries (LAGB). The results suggest that SLM is a viable technique for fabricating dense hierarchical CrCoNi MEA and offer a design strategy to further improve mechanical properties.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Xiaotong Pang, Zhihao Xiong, Shilong Liu, Devesh Misra, Zhihui Xiong, Zhuguo Li
Summary: This study elucidates the microstructural evolution and strengthening mechanism of commercial purity Ti (CP-Ti)/Ti-0.4Ni graded material (GM) fabricated by laser melting deposition (LMD). Microalloying with Ni in the GM improved the mechanical properties and avoided composition reapportionment issues at the interface, highlighting the potential of microalloyed Ti-0.4Ni for providing high-performance graded materials by LMD.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2021)
Article
Metallurgy & Metallurgical Engineering
Hong-yu Xiao, Yu-gang Li, Ji-wei Geng, Hong-ping Li, Ming-liang Wang, Dong Chen, Zhu-guo Li, Hao-wei Wang
Summary: This study investigates the effects of TiB2 and Zr on the microstructure, aging response, and mechanical properties of hot-extruded Al-Zn-Mg-Cu based materials. It was found that TiB2 can refine grain size and enhance hardness, while Zr primarily inhibits grain growth. Both additives have some positive impacts on aging kinetics and hardness.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2021)
Review
Optics
Dongshi Zhang, Zhuguo Li, Koji Sugioka
Summary: The demand for new nanoscience-based technologies is increasing, with LAL gaining attention for nanomaterial synthesis. It is easy to set up and perform, allowing for a diverse range of nanomaterials to be synthesized using different targets and liquids, with the choice of liquids impacting the final products significantly.
JOURNAL OF PHYSICS-PHOTONICS
(2021)
Article
Materials Science, Multidisciplinary
Ruijie Liu, Dongshi Zhang, Zhuguo Li
Summary: This study demonstrates the development of tunable iridescent antireflective surfaces through femtosecond laser ablation of tungsten and molybdenum, synthesizing functional metal-oxide nanomaterials, in situ deposition and hierarchical nanostructuring of LIPSSs. Adjusting the scanning interval allows modulation of particle deposition rates on the surface, leading to the formation of better ultrabroadband antireflective surfaces with less pronounced iridescence. Loose deposition of MoOx and WOx particles outperforms tight deposition for ultrabroadband antireflective applications, enhancing antireflectance performances significantly.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Hongyu Xiao, Jiwei Geng, Yugang Li, Zhiping Wang, Qing Yang, Hongping Li, Mingliang Wang, Dong Chen, Zhuguo Li, Haowei Wang
Summary: The precipitation behaviors and mechanical properties of the slowly-quenched 7085Al alloy after various aging treatments were investigated. The double-step aging treatment resulted in finer precipitates and higher number density compared to the single-step treatment, while the precipitate free zones narrowed. A novel heterogeneous nucleation of eta' phase on lath-shaped S phase was identified in this study.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
Xiaotong Pang, Zhihui Xiong, Chengwu Yao, Junhao Sun, R. D. K. Misra, Zhuguo Li
Summary: The metastable beta titanium alloy TB2 fabricated by laser melting deposition showed good ductility and high ultimate tensile strength. The beta solution plus two-step aging treatment was proved to achieve a good combination of strength and ductility for the TB2 alloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Coatings & Films
Yulei Feng, Xiaotong Pang, Kai Feng, Yueqiao Feng, Zhuguo Li
Summary: A novel test method, self-restraint test, was proposed to evaluate the crack resistance of high hardness coatings prepared by laser cladding. The method was effective in evaluating different coatings and establishing empirical formulas. It has significant implications for the preparation of high hardness crack-free coatings.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Yulei Feng, Xiaotong Pang, Kai Feng, Yueqiao Feng, Zhuguo Li
Summary: A novel high hardness Fe-based composite coating reinforced by M-3(C, B) carboboride was prepared by laser cladding. The coating exhibited compressive residual stress distribution and low residual tensile stress at the interface with the substrate, contributing to reduced risk of cracking. The coating showed significantly higher hardness and wear resistance compared to the 42CrMo substrate.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Chemistry, Physical
Yulei Feng, Xiaotong Pang, Kai Feng, Yueqiao Feng, Zhuguo Li
Summary: Fe-based coatings were prepared on 42CrMo by laser cladding with a trace amount of boron added. The effect of additive boron level on the reinforcements and compressive properties of the coating was analyzed. It was found that the addition of boron can significantly improve the strength and plasticity of the coating, and a eutectic structure composed of Fe3C type carbides and gamma-Fe was formed by reducing the formation energy of Fe3C.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Hongyu Xiao, Zhiping Wang, Jiwei Geng, Chengcheng Zhang, Yugang Li, Qing Yang, Mingliang Wang, Dong Chen, Zhuguo Li, Haowei Wang
Summary: This study investigated the precipitation and crystallographic relationships between the quench-induced S phase and Al matrix in an Al-Zn-Mg-Cu alloy using scanning transmission electron microscopy and scanning precession electron diffraction. It was found that higher lattice strain energy led to Zn segregation at the S-Al interfaces and the heterogeneous nucleation of nanosized eta' precipitates. The crystallographic orientation relationships between the S phases and precipitates were reported and discussed for the first time in an Al-Zn-Mg-Cu alloy.
SCRIPTA MATERIALIA
(2022)
Article
Engineering, Electrical & Electronic
Ruijie Liu, Dongshi Zhang, Sihan Ji, Yunyu Cai, Changhao Liang, Zhuguo Li
Summary: This study demonstrates the development of multifunctional metasurfaces through femtosecond laser ablation of titanium, resulting in macropore/LIPSS micro/nanostructures. These structures exhibit superior performance in ultrabroadband UV-vis-NIR-MIR absorbance, photothermal conversion, and thermal-emission induced reflectance oscillation. The density and size of macropores can be controlled by adjusting laser power and scanning velocity, allowing for optimization of different functions.
ACS APPLIED ELECTRONIC MATERIALS
(2022)
Article
Optics
Dongshi Zhang, Xinzhuo Li, Yao Fu, Qinghe Yao, Zhuguo Li, Koji Sugioka
Summary: This work reveals that fluid dynamics induced by femtosecond laser ablation in liquid can break the laser polarization state restriction and produce irregular circular-LIPSS and crisscross-LIPSS. Liquid vortex plays a crucial role in the formation of macropores and complex fluid dynamics on mountain-like microstructures can cause the formation of CCLIPSS. This opens up new possibilities to diversify the morphologies of LIPSS formed by femtosecond laser ablation in liquid.
OPTO-ELECTRONIC ADVANCES
(2022)
Article
Engineering, Mechanical
Busra Duran, Jerome Cavoret, David Philippon, Fabrice Ville, Arnaud Ruellan, Frank Berens
Summary: This study analyzes the changes in the physicochemical properties and tribological performances of gear transmission oils during field operation, finding differences from traditional engine oils.
TRIBOLOGY INTERNATIONAL
(2024)
Article
Engineering, Mechanical
Baocheng Liu, Hongsheng Chen, Jun Zhou, Jing Wang, Wenxian Wang, Xiaochun Chen, Sanxiao Xi
Summary: This study used fast hot pressing sintering to fabricate WC/AlCoCrFeNi2.1 metal matrix composites (MMCs). It was found that the addition of reinforced particles increased the microhardness, nanoindentation and wear resistance of the MMCs. During frictional processes, an oxide film formed, providing material protection, enhancing stability and reducing friction-induced losses.
TRIBOLOGY INTERNATIONAL
(2024)
Article
Engineering, Mechanical
Pradip Kumar Verma, Alok Singh
Summary: This study investigates the mechanical properties and wear resistance of CoMoMnNiV high entropy alloy reinforced aluminium matrix composite processed through stir-squeeze casting assisted with an ultrasonic transducer. The results show significant improvements in mechanical properties and wear resistance, with the composite containing 8 wt% HEA demonstrating the highest resistance to wear. Optical microscopy, SEM, and an optical profilometer were used for a thorough examination of the microstructure and worn surface.
TRIBOLOGY INTERNATIONAL
(2024)
Article
Engineering, Mechanical
Zhenghai Yang, Yingjian Song, Jinlong Jiao, Wenbo Li, Bao Shangguan, Yongzhen Zhang
Summary: This study investigated the friction, wear properties, and current-carrying properties of copper-graphite composites paired with brass C28000. The results showed that the current-carrying properties of the composite materials were excellent, but their wear rate was the main limiting factor. Furthermore, an increase in the thickness of the graphite layer led to an improvement in the uniformity of damage.
TRIBOLOGY INTERNATIONAL
(2024)
Article
Engineering, Mechanical
Moustafa Mahmoud Yousry Zaghloul, Karen Steel, Martin Veidt, Michael T. Heitzmann
Summary: This research evaluates and compares the impact of different material types on the tribological characteristics of Polyamide 6 composites, and finds that glass fiber-reinforced Polyamide 6 exhibits better friction and wear performance under high-pressure velocity factors.
TRIBOLOGY INTERNATIONAL
(2024)
Article
Engineering, Mechanical
Shaoqing Qin, Lida Zhu
Summary: In this paper, the surface and subsurface damage of laser assisted grinding CrCoNi medium entropy alloys were investigated using molecular dynamics simulations. The results showed that the application of laser energy can reduce cutting forces and minimize subsurface damage.
TRIBOLOGY INTERNATIONAL
(2024)
Article
Engineering, Mechanical
Kaikui Zheng, Youxi Lin, Tingzheng Lai, Chenghui Gao, Ming Liu, Zhiying Ren
Summary: The study investigated the use of waste foundry resin-bonded sand as a substitute for copper in resin-based brake material. It found that the waste sand was more favorable for improving the overall friction and wear properties of the material compared to copper. Waste sand benefited the material by forming a friction layer, leading to increased friction coefficient and stability. Brake material with 10-15% waste sand showed excellent heat-fade resistance.
TRIBOLOGY INTERNATIONAL
(2024)
Article
Engineering, Mechanical
Dayang Li, Fanhao Zhou, Yutong Gao, Kun Yang, Huimin Gao
Summary: This article introduces a continuous prediction model based on deep learning for predicting the power output of steam turbines. The model uses long short term memory (LSTM) method to develop a trend prediction model and optimizes the prediction model through feature selection method. Experimental results show that the model outperforms other models in terms of prediction performance.
TRIBOLOGY INTERNATIONAL
(2024)
Article
Engineering, Mechanical
Tomohiro Toyoda, Ryo Yasuike, Toshihiro Noda
Summary: In this study, a elasto-plastic constitutive model of friction incorporating the concept of superloading surface was developed based on the subloading friction model. The proposed model achieves a smooth transition of friction by describing the evolution rule of structure, treating the state with static friction coefficient larger than kinetic friction coefficient as the bulkiness of structure. The positive definiteness of the plastic multiplier, loading condition, and material parameters were derived, and the validity of the proposed model in accordance with the subloading-friction model was confirmed through a stick-slip simulation of a mass-spring system.
TRIBOLOGY INTERNATIONAL
(2024)
Article
Engineering, Mechanical
P. Balaji, B. Surya Rajan, K. Sathickbasha, P. Baskara Sethupathi, Deviga Magadevan
Summary: This study emphasizes the importance of using a variety of solid lubricants with different oxidation temperature regimes to enhance the tribological performance of brake pads.
TRIBOLOGY INTERNATIONAL
(2024)
Article
Engineering, Mechanical
Jian Ma, Yancong Liu, Javad Mostaghimi, Na Zhang
Summary: This paper investigates the influence of preparation strategies on the lubrication properties of surface textures. Three laser scanning strategies are proposed to achieve a sinusoidal textured surface, and the evolution of surface structure and chemical composition is discussed. The findings show that ridge structures enhance anti-wear properties but also increase the friction coefficient. However, the oil cover preparation method prevents the formation of ridges and improves wettability.
TRIBOLOGY INTERNATIONAL
(2024)
Article
Engineering, Mechanical
Mohammad Roostaei, Arvin Taghizadeh Tabrizi, Hossein Aghajani
Summary: In this research, the Al2O3/MoS2 nanocomposite coating layer was successfully applied on the surface of Ti-6Al-4 V alloy. The relation between the surface characteristics and wear resistance of the coating was studied using atomic force microscopy analysis and pin-on-disk wear test method. The results showed that the nanocomposite coating significantly reduced the wear rate and provided an equation to calculate the Lancaster coefficient.
TRIBOLOGY INTERNATIONAL
(2024)
Article
Engineering, Mechanical
Musa Bilgin, Sener Karabulut, Halil Karakoc, Yunus Kayir, Murat Sarikaya
Summary: This study investigates various methods to improve the machinability efficiency of Inconel 718 alloy while considering their effect on microstructural properties. The results show that hot+PMQL, hot+SiCNMQL, and hot+Al2O3-NMQL contribute significantly to the improvement of machinability characteristics. The EBSD analysis also reveals that a limited area is affected by heat in the hot machining environment and that the removal of the heated layer during milling process helps preserve the microstructure.
TRIBOLOGY INTERNATIONAL
(2024)
Article
Engineering, Mechanical
Q. Gao, Y. Fan, Y. G. Wu, J. L. Liu, J. Wang, L. Li
Summary: Fretting wear significantly affects the hysteresis behavior of the contact surface and leads to joint degradation. This study investigates the influence of harmonic normal force on the evolution of interface morphology and contact parameters with fretting wear. The results show that the harmonic normal force can significantly influence the hysteresis loop and the energy dissipation distribution on the contact surface.
TRIBOLOGY INTERNATIONAL
(2024)
Article
Engineering, Mechanical
Benjamin Weiland, Floriane Leclinche, Anis Kaci, Brigitte Camillieri, Betty Lemaire-Semail, Marie -Ange Bueno
Summary: This study presents a systematic approach to generating control signals for a tactile simulator that simulate the touch of textile fabrics. By using a friction modulation tactile surface and acquiring forces from real surfaces with artificial finger mimicking fingerprints, control signals are generated and processed in the frequency domain before sending them to the tactile stimulator. The study focuses on the potential benefits of incorporating fingerprint information in fabric simulations to achieve a more realistic tactile perception. A sensory analysis with 36 participants using the generated control signals showed better discrimination without fingerprint information.
TRIBOLOGY INTERNATIONAL
(2024)
