Leave this field blank . On the other hand, it is also found that friction coefficient increases with the increase in sliding velocity for both of the tested materials. The results also show that the mechanical and tribological properties of the tested material are comparable with those of traditional alloys, such as some kinds of bronze. Tribology in Industry 0354-8996 (Print) / 2217-7965 (Online) Website About; Articles; About. The results obtained by the numerical model are compared and found well-in-accordance with the experimental data available and with the analytical predictions made by scholars in the past, which verifies the applicability of the model chosen for solution. From experiments, it was observed that the wear rate decreased with reduced sliding velocity initially due to mechanically mixed layer formation and then increasess. Tribology in Industry | Citations: 17 | Read 573 articles with impact on ResearchGate, the professional network for scientists. At lower regimes the difference is marginal. The influence of silver nanoparticles improved the load-wear index of the cutting fluid by 8 % and reduced the wear scar diameter by 13% .With reference to the empirical data, all the concentration of nanoparticles exhibit the improvement in the extreme pressure and anti-wear properties of the nano-cutting fluid. Previous determination of friction coefficient is avoided as well as not-so-easy measurements of numerous additional parameters. Taking into account the growing industrial and manufacturing demands, a well-organized contest of characterization processes for such coatings is required. By these tribological investigations the optimum quantity and size of the Al2O3 particles were established for obtaining the best characteristics form the aspect of wear, under the tested conditions. Kaewunruen b, I. Krupka, M. Hartl a Brno University of Technology, Technicka 2896/2 Brno, Czech Republic, b University of Birmingham , … The use of red mud in Aluminium composite provides the solution for disposal of red mud and can possibly become an economic replacement of Aluminium and its alloys. In the present study, friction coefficient and wear rate of gear fiber reinforced plastic (gear fiber) and glass fiber reinforced plastic (glass fiber) sliding against mild steel are investigated experimentally. The MMC pins are prepared with different weight percentage of SiC and Al2O3(10, 15 and 20 %). Published: 15 September 2020. by Faculty of Engineering, University of Kragujevac. Hardness values measurement and microstructural analysis were used in determining the ageing behaviour, after solution and age-hardened heat-treatment. In the present work, a comparative wear behavior study of three categories of materials viz, as cast, cast aged (casting followed by T6) and forge aged (forging followed by T6) has been investigated. The first part in a three-episode miniseries on tribology. The machine allows us to carry out tribological experiments using different contact schemes with or without lubricants. The tested samples were examined and analyzed using Scanning Electron Microscope (SEM) and X-ray energy-dispersive spectrometry (EDX). From the other side, the innovations related to the industrial revolutions introduced new tribological problems to be solved. The proposed procedure enables contact force measurements with a ±2.5% error. In order to do so, a pin on disc apparatus is designed and fabricated. Vibration based methods are effective when the defect in the bearings has already become severe. Surface morphology using SEM revealed PWS/resin composite to have less distortional effects on the grains from compressive force of 15.7 N/mm2 applied compared to the palm kernel shell grains, and also shows PWS grains held together in close packing by the resin bond. Some of the prepared mixtures were characterized by FT-IR and then evaluated as anti-rust and anti-oxidant additives for lubricating oils according to standard test methods such as rust preventing characteristics and RPVOT (Rotary Pressure Vessel Oxidation test) for oxidation stability evaluation. "); Furthermore, the results of analysis of variance showed that tensile strength was predominant factor on the abrasive wear rate, followed by load and spindle speed. In bearing fault diagnosis vibration based methods are very popular, but the signals acquired by its transducers from the bearings are distorted by other faults and mechanical noise from the equipment. This test is generally considered to be a three body wear test. About. Process parameters that included speed (1000, 2000, 3000) rpm, feed (0.05, 0.075, 0.1) m/min and Depth of Cut (DOC) of (0.5, 1.0, 1.5) mm were varied for three levels to determine the test cases with the help of Taguchi’s Orthogonal Array (L9), following which, surface roughness, MRR and tool wear was calculated. The journal was founded in 1979 by the Yugoslav Tribology Society (now Serbian Tribology … The measurements were simultaneously carried out in the SUSU laboratories, and at Sofia University in several stands under various friction conditions. Tribology is the study of lubrication, friction, and wear between surfaces in relative motion. It was found that the adding of TM-3-18k into the oil Tribological additives in the amount of 5.75 % under laboratory conditions can reduce the wear rate by 35.1 – 35.5 %, the maximum load also increases by 17.1 – 17.2 %, and the welding load increases by 5.3 – 8.4 %. The results of this research allow us to choose optimal settings for 3D printing depending on the required tribological properties of the parts, such as friction coefficient and wear. document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E")); The purpose of this paper is to determine the impact multilayer coatings and cutting parameters on tool wear and temperature at the tool-chip interface for two types of coated carbides (KC810 and KC910 Commercialized inserts) during dry turning operation of carbon steel SAE 1030, in order to determine the ideal parameters and guarantee the best performances of the cutting tools. Experiments are carried out when smooth or rough mild steel pin slides on gear fiber and glass fiber disc. Fiber reinforced polyester composites were developed by reinforcing polyester resin with Cow hair fibers obtained from the tail of Zebu breed cattle in Nigeria.    • Tribology of friction pairs Wani a aCentre for Tribology, Mechanical Engineering Department, National Institute of Technology, Srinagar-190006, J&K India. Work has two targets. Further, the Glass – Basalt composites (GB) exhibits good wear resistance because of their excellent Ratner - Lancaster factor (σε). The results obtained from the tests have shown that on the basis of oil analysis for the presence of wear products, the cause of engine failure related to the acceptable wear of engine friction pairs can be clearly identified and located. It is observed that larger sphere radius gives lower pressure distribution and lower compliance. Tribology in Industry www.tribology.fink.rs Case Study: the Influence of Oil-based Friction Modifier Quantity on Tram Braking Distance and Noise R. Galas a, M. Omastaa, M. Klapka, aS. 47: 2013: Wear behaviour of Al-Si-Fe alloy/coconut shell ash particulate composites. Comparisons between AE and VA over a range of speed and load conditions at gradual increase of defect size are presented and from them it is concluded that AE method is superior to identify the severity of defect. Publisher Website. Publishing with this journal. Different Fiber reinforced composites showed the greatest enhancement in mechanical (tensile, flexural), abrasion resistance and water absorption properties compared to the unreinforced polyester material. The objective is to minimize the surface roughness, tool wear and maximize the MRR. A comparative analysis of abrasive sandpaper made from two locally sourced and easily available materials, periwinkle and palm kernel shells was carried out to evaluate their viability as replacements for foreign imported abrasives sandpaper.    • Nanotribology Frictional wear is one of the most common causes of material failure. The cutting fluids are widely used to reduce the temperature and friction between the tool and work piece in the metal cutting processes. One of significant quality indicators is the abrasion rate. Also in order to study the effect of temperature the viscosity of lubricant is taken for different temperatures. Shah b a Department of Mechanical Engineering, National Institute of Technology Srinagar 190006, India, b … Wear rates of metallic samples were determined and the worn surfaces were examined by optical microscopy, SEM and Talysurf profilometry. The wear tests were performed for alloy and composites by varying load, speed and sliding distance for both aged and as-cast conditions by using a pin on disc wear testing machine. For comparison, the ageing characteristics of the unreinforced matrix alloy with an identical processing and ageing history were also examined. The tribological testing testified, that the wear of the samples which were deposited with the nickel based composite coating, is 1.4 times less than the wear of the samples with the base nickel coating. These results had shown that, additions of ZrSiO 4 particles to Al-4.5Cu matrix alloy improved properties. The removal of cutting fluids and lubrication in dry machining operations requires a good knowledge and full control of all the mechanisms that lead to tool damage. The experimentation has been carried out for different load (20 and 30 N) with varying distance through constant velocity (2.5 m/s) as per ASTM G65 method. Concerns for the environment, energy conservation, and consumer product and production … The scopes of the journal include, but are not limited to, the following fields: • Friction • Wear • Lubricants • Surface characterization The castings were machined to ASTM standard and T6 heat treatment was carried out at 540 °C ± 5 for 12 hrs and quenched at 60 °C in water. Studies have been conducted on the example of the monoester of maleic acid, esters of tartaric and aconitic acids with hexadecyl alcohol. Scanning electron microscopy (SEM) and atomic force microscopy (AFM) was used to conduct the surface morphological examination of corroded and inhibited alloy specimens. OI Abdullah, J Schlattmann, AM Al-Shabibi. The reinforcement content was varied from 0 to 9 % by weight in steps of 3 % of SiCp and fixed quantity of 3 % by weight of graphite particles. Nano copper additive with crystalline atomic structure shows more severe three body wear compared to boric acid with layered lattice structure. It is proved, that by obtaining the composite chemical coatings the most efficient are nanodispersed particles of aluminum oxide and potassium polytitanate. It was revealed that this Tribological additive makes it possible to form functional surface layers that provide normal operating conditions for tribological conjugation of parts. In recent years the research interest is increasing for development of the composite materials with that alloy as a substrate with addition of the Al2O3, graphite and SiC particles as the reinforcement. The objective of this study was to develop a theoretical model and associated wear mode map to identify the regimes in which two body abrasion (grooving abrasion) and three body abrasion (rolling abrasion) dominate in the micro-abrasive wear test (also known as the ball cratering wear test). The results reveal that the wear rate of composites was less than that of non-reinforced alloy. Tribology in Industry www.tribology.fink.rs Tribological Behavior of Journal Bearing Material under Different Lubricants S. Baskar a, G. Sriram a a Sri Chandrasekharendra Saraswathi Viswa Mahavidyalaya, Enathur – 631561, Kanchipuram, India. This paper presents the optimization of cutting parameters for MRR, tool wear and surface roughness characteristics in machining of ADC12 alloy. S. Prabhu, P.H. This study presents the investigation of abrasive wear performances for polyamides using a Response Surface Methodology (RSM). The aim of the present research is to determine the abrasive wear behavior of functionally graded Al LM21/10wt.% Ni coated SiC composite fabricated by centrifugal casting route. In all the test cases investigated composite materials possess significantly higher wear resistance than the pure metal substrate - the ZA-27 alloy. The idea is to choose optimal cutting conditions which lead to the best contact conditions limiting the triggering or aggravation of wear phenomena. Keywords: IF-MoS 2 … The results indicate that the composite exhibits an accelerated hardening response compared to the unreinforced matrix alloy at the three selected aging temperatures of 100, 200 and 300 °C. The coefficient of friction decreases with increase in the number of strokes. Nowadays, advanced and complicated techniques are incorporated in film production systems, leading in this way to the development of an extended variety of different coating types. Tests were carried out in a pin-on-disc using various conditions against SiC abrasive cloth. They have not attracted much interest from researchers in spite of their crucial role and impact in industry and society. Tribological properties were analyzed, using zirconia pin-on- additive manufactured 316L SS disc, the result showed that the treatment has considerable effect on decreasing coefficient of friction. Tribology is defined as the study and application of the principles of friction, lubrication and wear. Results showed that the radial distance had major impact on the wear rate (40.59 %), followed by the applied load (29.7 %) and rotational speed (14.85 %).    • Lubrication It is concluded that the sol presents favorable conditions for their potential application as coatings on metallic substrates. Tribology in Industry - Journal Impact 2020-21 Prédiction. Cutting temperature, Crater and Flank wear have been systematically recorded in order to determine their influence on tool life time. On the other hand, plastic deformation, fiber pull out and agglomeration of sand particles along with wear debris were some of the observations made during morphology of hybrid composites through SEM pictures. The measurement of activation and thermodynamic parameters regulating the inhibition behavior of Gth shows the mixed adsorption of Gth on the alloy surface, which follows the Langmuir isotherm model. Polymeric composites are used for different aims as substitute of traditional materials such as metals; due to their improved strength at small specific weight. These effects were attributed among others to the release of highly compressive residual stresses in the NCD coating structure. 37, No. Although carefully collected, accuracy cannot be guaranteed. Present research is an extension of author's previous work in the same. Keywords: Journal bearing Bio‐lubricant Pin on disc Nano CuO Formulated rapeseed oil A B S … It has been found that tensile strength and impact energy increases while elongation decreases, with increasing weight fraction and decrease in particle size of red mud. The PA66/PTFE blend(80/20 wt.%), Blend/Short glass fiber(SGF), Blend/Short Basalt fiber(SBF),Blend/10 wt.% SGF/10 wt.% SBF (GB) were the composites selected for the investigation. The present study deals with the growing demand for more durable aluminum alloys for the engine components with improved mechanical property/ tribological properties majorly focusing on the area of wear and tear in engine piston systems. It is also noted that the difference in wear behavior is revealed only at conditions of higher load, higher speed and longer sliding distance of testing. As a result of these tests, a high AW/EP effectiveness of aconitic ester was found. The contributions of tensile strength, load and speed were about 33.55 %, 24.45 % and 21.87 %, respectively, while the contribution of square and 2-way of interaction was about 3.04 % and 11.23 %, respectively. The scopes of the journal include, but are not limited to, the following fields: • Friction Milling experiments were performed on CNC Milling machine using uncoated carbide inserts. The Journal was founded in 1979 and is issued quarterly. Wear track surface morphologies shows the evidence for the indentation of the abrasives in pores in the untreated AM sample. Variations of friction coefficient with the duration of rubbing at different normal loads and sliding velocities are investigated. Google Scholar. The friction force and coefficient of friction were measured during the test. Friction coefficient and the temperature in the contact area during the runtime were measured using a universal friction machine MTU-1. 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