Article
Materials Science, Textiles
P. Ravikumar, A. R. Suresh, G. Rajeshkumar
Summary: The tribological performance of bidirectional jute/carbon fiber reinforced polyester composites was investigated using response surface methodology. The study found that wear loss increased with the increase in sliding velocity and load, and decreased with the increase in fiber weight fraction. The coefficient of friction, on the other hand, decreased with the increase in process variables. Scanning electron microscopy was used to examine the morphology of worn-out samples, providing insights into the wear mechanisms.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Multidisciplinary Sciences
Chee Wah Raju, Chee Wah Loy, Kiho Cho, Paul Farrar, B. Gangadhara Prusty
Summary: Over the past decade, the usage of fibre-reinforced biocomposites has become increasingly prominent. While the addition of fibres to biocomposites results in higher fracture toughness, degradation of the material can occur due to intolerance towards filler and fibre content in the biocomposite matrix. Optimisation of resin-fibre-filler ratios is crucial in improving the tribological performance of high load-bearing applications, but the understanding of this performance is limited due to insufficient in-vitro studies on the effect of fibre microstructures.
SCIENTIFIC REPORTS
(2023)
Article
Materials Science, Textiles
Priyalaxmi Swain, Rahul Pal, Dwimayitree Chouhan, Shyama Prasad Mohanty
Summary: The interface between the fiber and polymer matrix is crucial in fiber-reinforced composites. In this study, the jute fiber surface was modified with starch particles to enhance the interaction between the fiber and matrix. The results showed that coating the fiber with starch particles improved the mechanical properties of the composites.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Engineering, Mechanical
Wen Hao Kan, Huizhi Peng, Samuel Lim, Yuman Zhu, Kun Zhang, Aijun Huang
Summary: The sliding behavior of titanium alloys processed by laser powder bed fusion and conventionally-processed alloys was examined. Different microstructures were observed in these samples. When sliding against steel, oxidative, abrasive, and adhesive wear always occurred. However, wear rates were similar regardless of friction and hardness if material removal mainly occurred through abrasion or adhesion. Martensitic phases decomposed during sliding while nano-crystalline grains enhanced oxidative wear and reduced friction. By promoting oxidative wear over abrasive or adhesive wear, wear rates and friction can be substantially reduced with a stable nanocrystalline microstructure that provides ultrahigh hardness.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Polymer Science
Jasem Ghanem Alotaibi, Ayedh Eid Alajmi, Gabrel A. Mehoub, Belal F. Yousif
Summary: The research found that GFRE composites with AP-O fibers had the highest wear rates, while GFRP composites with P-O fibers had the highest wear rates. Composites with P-O and N-O fibers had the lowest wear rates at longer sliding distances.
Article
Engineering, Marine
Fengming Du, Dawei Li, Mingxing Hao, Yang Yu, Weiwei Wang
Summary: In this study, a sliding bearing friction calculation program is developed using the Fortran language, and a component-level sliding bearing tribology testing machine is designed. The program calculates the friction force of the bearing under different working conditions, while the testing machine predicts wear failure and explores the wear mechanism for different types of sliding bearings. The model calculation results are in good agreement with the experimental data, verifying the model's correctness. Through the wear test, it is found that the wear mechanism of the sliding bearing is mainly scratches and the electroplating layer reduces friction by being squeezed out and attached to the surface of the aluminum alloy. The model and testing machine provide theoretical guidance for the friction durability of sliding bearings used in marine engineering and ensure the reliability of marine engineering.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Mechanical
Longjiang Peng, Jian Li, Meng Zhang, Huaijun Lin, Zu Li, Wei Li
Summary: This study characterized the tribological behaviors of a Zr-based BMG material against GCr15 steel balls under different loads and frequencies. It was found that high coefficient of friction (COF) was observed under low load and high frequency, while low COF was observed under high loads or at low frequencies. The specific wear rate increased with both load and frequency, with frequency playing a more crucial role. Transition of wear mechanisms from oxidative wear and abrasive wear to adhesive wear was detected with increasing load and frequency, and the role of plastic deformation of BMG was illustrated. This study helps to understand the tribological properties of Zr-based BMGs under sliding conditions.
Article
Engineering, Mechanical
Wen Hao Kan, Siyu Huang, Ziyan Man, Limei Yang, Aijun Huang, Li Chang, Yves Nadot, Julie M. Cairney, Gwenaelle Proust
Summary: This study investigated the tribological properties of an AlSi10Mg alloy fabricated using laser powder bed fusion in both as-built and T6-treated conditions. It was found that T6 treatment resulted in a loss of hardness, toughness, and strength, and had either no significant effect or was detrimental in dry sliding wear tests.
Article
Engineering, Mechanical
Ming Luo, Qinghao He, Hongjian Wang, Li Chang
Summary: This study fabricated short carbon fiber-reinforced nylon (SCFRN) composites using fused deposition modeling (FDM) technology and created different surface textures successfully. The results showed that fiber reinforcements effectively enhanced the load-carry capacity of the materials, and surface textures further improved the tribological performance of the composites.
JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME
(2021)
Article
Chemistry, Physical
Fatma Makni, Anne-Lise Cristol, Yannick Desplanques, Riadh Elleuch
Summary: The study indicated that regular size and distribution of rockwool fiber balls contribute to better friction behavior and enhanced wear resistance. Improving the performance of composite friction material can be achieved by reducing microstructural heterogeneity resulting from the morphology and distribution of rockwool fibers.
Article
Materials Science, Coatings & Films
Yong Chen, Yu X. Xu, Haoqiang Zhang, Qimin Wang, Tiefeng Wei, Fengge Zhang, Kwang Ho Kim
Summary: The mechanical and tribological properties of AlCrMoN hard coatings with different Mo contents were investigated. The addition of Mo did not reduce the friction coefficient as expected, but it enhanced the wear resistance at 600 degrees C due to the modification of the tribolayer. The incorporation of molybdenum oxides increased the deformation ability of the tribolayer and formed a Mo-N-O interlayer at the interface, promoting the good adherence of the nanocrystalline tribolayer and preventing further wear.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Engineering, Mechanical
Pontus Johansson, Par Marklund, Marcus Bjorling, Yijun Shi
Summary: The tribological performance of carbon fiber reinforced PTFE composites sliding in a dry nitrogen environment is sensitive to changes in humidity and the counterface material, with the humidity effect reaching up to about 40% on the coefficient of friction and specific wear rate.
TRIBOLOGY INTERNATIONAL
(2021)
Article
Engineering, Mechanical
Rundong Zuo, Guorong Wang, Gang Hu, Shiping Zhao, Gang Wei
Summary: The study investigated the influence of different axial loads on the tribological properties of HNBR in oil-based mud containing hard particles using experimental and theoretical methods. It was found that the tribological properties of HNBR vary with axial load and wear time, and the total friction coefficient can be separated into adhesion, hysteresis, and abrasive terms. The hysteresis term, caused by micro-strain on the HNBR surface and overall deformation, was identified as the main factor affecting the tribological properties.
TRIBOLOGY INTERNATIONAL
(2021)
Article
Materials Science, Textiles
N. Rajini, K. Mayandi, Manoj M. Prabhakar, Suchart Siengchin, Nadir Ayrilmis, C. Bennet, S. O. Ismail
Summary: This study investigated the tribological behavior of natural fiber-reinforced polyester composites using CP fiber and polyester as materials. The composites were fabricated and tested for wear performance, showing an increase in specific wear rate with higher loads and a non-linear decrease in friction coefficient with increasing contact pressure and decreasing sliding velocity. Morphological analysis was conducted using a scanning electron microscope on the worn specimens.
JOURNAL OF NATURAL FIBERS
(2021)
Article
Engineering, Mechanical
Wen Hao Kan, Li Chang
Summary: The study investigated the sliding wear behavior of hybrid polymer nanocomposites under different loading conditions and counterface roughness. The synergistic effect between nanoparticles and micro-sized fillers on friction and wear performance depended on the tribological system involved. TiO2 nanoparticles are only beneficial when blended with other wear debris to reduce friction and wear.
