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Автор: Grafiati
Опубліковано: 11 вересня 2023

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Статті в журналах з теми "WEAR AND FRICTION ASSESSMENT"

1

Jayaraman, R., T. Balusamy, and A. K. Lakshminarayanan. "Assessment of Microstructure and Wear Resistance of Friction Stir Processed Cast Mg-Al-Zn Magnesium Alloy." Applied Mechanics and Materials 787 (August 2015): 442–47. http://dx.doi.org/10.4028/www.scientific.net/amm.787.442.

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Microstructure, micro hardness and wear resistance of friction stir processed cast magnesium alloy are investigated in this work. Image analysis is used to differentiate the amount of phases present in the base metal and friction stir processed regions. Hardness mapping indicates that the frictions stir processed region has 64 % increase in microhardness compared to the base metal. Wear resistance was evaluated using pin-on-disc testing and it is found that the friction stir processed region has superior wear resistance compared to the base metal. Fine grains with uniformly distributed second phase particles are the reasons for improved microhardness and wear resistance of friction stir processed region.
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2

PIOTROWSKA, Katarzyna, Monika MADEJ, and Dariusz OZIMINA. "ASSESSMENT OF TRIBOLOGICAL PROPERTIES OF Ti13Nb13Zr TITANIUM ALLOY USED IN MEDICINE." Tribologia 285, no. 3 (June 30, 2019): 97–106. http://dx.doi.org/10.5604/01.3001.0013.5440.

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The aim of this study was to evaluate the wear and tear of titanium biomaterials used for hip endoprosthesis. The test materials were samples of titanium and its alloys: Ti grade 4, Ti6Al7Nb and Ti13Nb13Zr. Model tribological tests were carried out in reciprocal motion under conditions of technically dry friction, friction with lubrication provided by an artificial blood solution and Ringer's solution. A 6 mm in diameter Al2O3 ball was used as a counter-sample in the friction pairs. After tribological tests, traces of wear were inspected using scanning electron microscopy. A confocal microscope with interferometric mode was used to evaluate the wear of the surface of samples and counter-samples. The lowest friction coefficients among all the material associations were obtained for the Ti13Nb13Zr-Al2O3 alloy. SEM analysis has shown that as a result of the wear process, numerous scratches and grooves were generated. They were created as a result of loose products of wear moving around in the friction area. For all tested materials, a pile-up of the wear edges was observed, which indicates an abrasive wear mechanism. During the friction tests of the tested material associations, the titanium disc proved to be the most wearing material. For Ti6Al7Nb and Ti13Nb13Zr alloys, comparable wear was recorded regardless of the test conditions (TDF, AB, RS). The analysis of the obtained tribological results showed that the material association for which the lowest wear of friction pair (sample and countersample) recorded was Ti6Al7Nb-Al2O3.
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3

Pakowski, Czesław, Tomasz J. Kałdoński, and Tadeusz Kałdoński. "Continuous Method for Assessment of Wear under Conditions of Technically Dry Friction." Solid State Phenomena 113 (June 2006): 415–19. http://dx.doi.org/10.4028/www.scientific.net/ssp.113.415.

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In the article a continuous method for measurement of wear under conditions of technically dry friction of tribological kinematic pairs of the type pin–on–disk of T–11 tester, as an example is presented. Also taken up was a test of an evolved simple method for evaluation of correction on the participation of thermal expansion in size change of a frictional kinematic pair. The analysis of obtained results showed the existence of correlation between total experimental wear and analytical value of total wear (decrease of linear dimension of pin).
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4

Tokarev, Alexandr O., and Lyubov D. Makagon Makagon. "Assessment of tribotechnical properties and resistance to wear of plasma coatings." Russian Journal of Water Transport, no. 69 (December 23, 2021): 95–108. http://dx.doi.org/10.37890/jwt.vi69.179.

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Анотація:
In order to determine the operating conditions of parts for which restoration of worn surfaces is acceptable by the method of plasma spraying of various powder alloys, contact fatigue tests were carried out under cyclic contact impulse loading. In addition, tribotechnical tests were carried out with various wear-resistant coatings under conditions of liquid sliding friction. Bench and operational tests showed the use of coatings obtained using modern plasma technologies, the feasibility of protecting parts operating in conditions of corrosion, waterjet and cavitation wear, as well as in sliding friction. The coating sprayed with Ni-Al intermetallic alloy powder provides the most reliable protection against shock cyclic impact and abrasion during liquid friction than other materials studied. Coating with wear-resistant self-fluxing powder Ni-Cr-B-Si-C alloy, hardened by solid carboboride phases, without its additional heat treatment for restoration of surfaces working in sliding friction pairs, is not recommended.
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Nazarov, Alexander, Sergey Krivoshapov, and Nikolay Sergienko. "EVALUATION OF RELATIVE WEAR OF FRICTION SURFACES OF DISC BRAKE MECHANISMS OF PASSENGER CARS." Bulletin of the National Technical University «KhPI». Series: Automobile and Tractor Construction, no. 1 (March 19, 2023): 26–35. http://dx.doi.org/10.20998/2078-6840.2022.1.04.

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The article provides a search and analysis of the design parameters of disc brake mechanisms that provide regulated braking efficiency and wear resistance of friction pairs in order to increase their durability. To assess the relative wear of the friction surfaces of the disc brake mechanisms of passenger cars, an assessment was made of the parameters that can characterize the wear of the interface. On the example of Lanos passenger cars, the possibilities of prospects for further calculation of the coefficients of wear resistance of materials of friction bodies using generalized mathematical models, such as a model of wear of friction pairs of disc brakes, including the design parameters of friction surfaces, the magnitude of the drive pressure, the initial braking speed of the car and the braking time, are considered. wear occurs
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Spinelli, M., S. Affatato, L. Tiberi, S. Carmignato, and M. Viceconti. "Integrated friction measurements in hip wear simulations: Short-term results." Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine 224, no. 7 (November 9, 2009): 865–76. http://dx.doi.org/10.1243/09544119jeim683.

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Анотація:
Hip joint wear simulators are used extensively to simulate the dynamic behaviour of the human hip joint and, through the wear rate, gain a concrete indicator about the overall wear performance of different coupled bearings. Present knowledge of the dynamic behaviour of important concurrent indicators, such as the coefficient of friction, could prove helpful for the continuing improvement in applied biomaterials. A limited number of commercial or custom-made simulators have been designed specifically for friction studies but always separately from wear tests; thus, analysis of these two important parameters has remained unconnected. As a result, a new friction sensor has been designed, built, and integrated in a commercial biaxial rocking motion hip simulator. The aim of this study is to verify the feasibility of an experimental set-up in which the dynamic measurement of the friction factor could effectively be implemented in a standard wear test without compromising its general accuracy and repeatability. A short wear test was run with the new set-up for 1×106 cycles. In particular, three soft-bearings (metal-on-polyethylene, Φ = 28 mm) were tested; during the whole test, axial load and frictional torque about the vertical loading axis were synchronously recorded in order to calculate the friction factor. Additional analyses were performed on the specimens, before and after the test, in order to verify the accuracy of the wear test. The average friction factor was 0.110 ± 0.025. The friction sensors showed good accuracy and repeatability throughout. This innovative set-up was able to reproduce stable and reliable measurements. The results obtained encourage further investigations of this set-up for long-term assessment and using different combinations of materials.
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7

Velichko, Sergey A., Alexei V. Martynov, and Elena G. Martynova. "Assessment of Tribotechnical Properties of Consolidated Materials Obtained by Electrospark Processing." Engineering Technologies and Systems 33, no. 1 (March 31, 2023): 79–99. http://dx.doi.org/10.15507/2658-4123.033.202301.079-099.

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Abstract Introduction. The bakery industry is an agricultural industry of high-level processing of raw materials focuses on the end-consumer. In the production of bakery products one of the operations of the technological process is performed by dough dividers of vacuumpiston type, whose service life is 30‒40% lower than the normative. The most promising method for restoration of worn parts of the suction mechanism is electrospark processing. When selecting the electrode material, it is important that they have not only low erosion resistance, but also high tribotechnical properties. Aim of the Article. The article deals with problem of selecting electric coatings to reduce wear of working surfaces of suction mechanism parts during repair of vacuum piston-type dough dividers. Materials and Methods. The analysis of the properties of electropark coatings was carried out by nondestructive testing methods using modern research equipment; the results were processed using the Compass-3D program. Results. There are determined the values of physical, mechanical, frictional and tribotechnical properties of electrospark coatings made of BrOS10-10 bronze and Kh15N60 alloy. The total wear rate for BrOS10-10 bronze coating was 8,3 ∙ 10‒12, and for Kh15N60 alloy 15 ∙ 10‒12. Discussion and Conclusion. Total wear rate on the friction machine of bronze coated samples is lower than that of basic friction pair in 1.4 times, and of alloy coated samples ‒ higher in 1.26 times. Adding of MODENGY solid-lubricant coating to the coating from the alloy reduces its abrasion ability by 3 times, and the total wear rate ‒ by 1.34 times in comparison with the base friction pair. The used calculation-experimental method showed low wear rate of electrospark coatings of bronze and alloy in relation to the material of parts of the suction mechanism of vacuum-piston-type dough dividing machines.
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Tikalov, Andrey Vladimirovich, and Leonid Vladimirovich Yefremov. "Vibroacoustic Study of Abrasive Wear of Multilayered Sliding Bearings." Key Engineering Materials 822 (September 2019): 662–68. http://dx.doi.org/10.4028/www.scientific.net/kem.822.662.

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The article substantiates consistent patterns of wear at the example of microcutting materials in sliding bearings in dependence to grain sizes of abrasive cloths and hardness of bearing layers received with the use of vibroacoustic diagnostics and the method of artificial bases (MAB) in testing on the SMC-2 frictional machine. These patterns can be helpful for the assessment of quality and selection of materials for products [1,2], selection of the friction model [3], and selection of abrasive cloths for the diagnostics of the latter and assessment of the running-in period for the top coating.
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9

Cabrol, Elodie, Christine Boher, Vanessa Vidal, Farhad Rezai-Aria, and Fabienne Touratier. "A Wear Damage Assessment of High Temperature Forging Tool." Advanced Materials Research 966-967 (June 2014): 103–10. http://dx.doi.org/10.4028/www.scientific.net/amr.966-967.103.

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High temperature forging tools are highly damaged by wear shearing under cyclic loading which reduces the life of tools. In real conditions, depending upon the tool areas, the level of wear can change. The surfaces of tools can be treated by cobalt-based hardfacing using different welding processes. This study focuses on tribological damages of Stellite 21 deposited by MIG process. Wear tests are carried out at room and high temperature on a ring on disc tribometer under high normal load. Different testing conditions are examined. The surface plastic strain due to the friction shear stresses is demonstrated by different methods like SEM observations, micro-hardness measurements and XRD analyses. More particularly, it is shown that the initial (200) crystallographic preferred orientation due to the welding process is modified into (111) crystallographic preferred orientation due to shear stresses regardless the loading. Moreover, a relationship between the gradient of the plastic shear strain at the friction subsurface and the level of the micro-hardness measurement has been established. In regard of the results, when the shear strain exceeds a threshold, the micro-hardness measurement is stabilised. The ultimate value could be induced by the stacking fault energy that is considered as weak in Stellites.
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Mukhacheva, T. L., T. M. Kalinina, and S. A. Kusmanov. "Evaluation of tribotechnical properties of modified surfaces after plasma electrolytic treatment." Journal of Physics: Conference Series 2144, no. 1 (December 1, 2021): 012031. http://dx.doi.org/10.1088/1742-6596/2144/1/012031.

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Abstract The article considers the study of the effect of plasma electrolytic processing on the tribotechnical characteristics of medium-carbon steel. Friction tests were carried out in dry friction mode. Electron microscope and profilometer were used to study the friction tracks. For a comprehensive assessment of the quality of the modified surface layer, the Kragelsky-Kombalov complex parameter was calculated. It was found that plasma electrolytic treatment leads to a decrease in the coefficient of friction and weight wear in comparison with hardened and untreated steel. It has been determined that the mechanism of wear of samples after plasma electrolytic treatment is fatigue wear at boundary friction and plastic contact.
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Дисертації з теми "WEAR AND FRICTION ASSESSMENT"

1

Hasan, Abdullah Mohammed. "Quantitative Laser-based Assessment of Top of Rail Friction Modifiers for Railroad Application." Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/70916.

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The primary purpose of this study is to assess the effectiveness and utility of laser-based sensors for measuring, quantitatively, the presence and extent of top-of-rail (TOR) friction modifiers that are commonly used in the railroad industry for reducing friction between railcar wheels and rail. Modifying the friction between the wheel and rail is not only important for significantly reducing rolling resistance, but it also contributes to reducing wheel and rail wear, lowering rolling contact fatigue, and potentially curving resistance. It is common to monitor rail lubrication empirically by manually observing the sheen of the rail and tactically sensing any residues that may be present on the rail. Often performed by experienced railroad engineers, such methods are highly subjective and do not provide a quantitative assessment of how lubricated or unlubricated the track may be. A new, quantitative measurement method for accurately assessing the state of lubrication of rail is developed and studied in depth. The method takes advantage of the light reflection and dispersion properties of laser-based optical sensors to provide a repeatable, verifiable, and accurate measure of the presence of TOR friction modifiers on the rail. The measurement system is assembled in a self-contained, portable rail cart that can be pushed on the rail at walking speeds. Various TOR states are assimilated in the lab for assessing the effectiveness of the laser system. Additionally, the laboratory results are repeated in the field on various tracks, including revenue service track. The results of the tests indicate that the developed system is able to accurately measure the presence of TOR friction modifiers from none to fully-saturated, but is not affected by environmental factors such as rain, sunlight, type of rail, and top-of-rail condition. The measurements provide the means for classifying the state of rail friction in an indexed manner. The results of the study will not only have a significant effect on more efficient use of TOR friction modifiers for promoting better fuel efficiency, but they can also have a major impact on braking practices in applications such as Positive Train Control (PTC).
Ph. D.
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2

Elfick, Alistair Philip David. "A tribological assessment of the porous coated anatomic total hip replacement." Thesis, Durham University, 1999. http://etheses.dur.ac.uk/4574/.

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The tribological performance of internal joint prostheses is a fundamental influence on their longevity. The aim of this study is to characterise the tribological performance of the Porous Coated Anatomic total hip replacement by the analysis of 119 explanted prostheses. Investigations of the friction, wear, surface topography and wear debris were made and related to the joint's clinical performance. The friction of the joints at explant was similar to that of new prostheses. The median total wear volume (419mm(^3)) was found to agree with previous wear studies suggesting the existence of a threshold wear volume which promotes osteolysis. Clinical wear factor for the whole cohort matched that of alternative joint designs. The femoral head finish was shown to degrade but not in proportion to implant duration. The roughness of the UHMWPE liner was shown to fall but no relationship with any head roughness, or temporal, parameter could be distinguished. Simulator studies confirmed that the wear factor of a joint is likely to change over its lifespan. Wear models published previously describing the influence of femoral head roughness on wear could not predict the performance of explanted prostheses. An alternative relationship was observed indicating that head roughness is not as powerful a predictor of wear as previously held. A novel technique for the characterisation of the size distribution of ex vivo and in vitro wear debris was developed. A Low-Angle Laser Light Scattering Particle Analyser was used to size particles continuously over a range from 0.5 to 1000μm. This technique offers considerable unprovement over existing microscope-based methods in terms of the detail of the information and does so with less experimental effort. It was shown to be highly accurate and repeatable in preliminary investigations. Case studies of five tissue samples revealed the potential of this method.
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3

Rhen, Mats. "Studies of condition monitoring methods for system health assessment : health diagnostics and prognostics." Licentiate thesis, Luleå tekniska universitet, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-26751.

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Increasing interest in productivity, safety and environmental issues have highlighted the area of maintenance and reliability. The increasing cost of maintenance covers both preservation and sustainable exploitation of resources and awareness in maintaining equipment in a way to ensure return on investment both in the short and long run. The information obtained from condition monitoring of existing turbine, plant, rails and pumps can provide an important basis for dimensioning of future systems and components. The main objective of this research work is to develop and apply methods for efficient condition monitoring, and hence reduce maintenance costs and provide a framework for development and implementation of computer based decision tools. Furthermore, methods enabling existing process data and cost effective transducers to be used together with modern data analysis and diagnostic tools for condition monitoring of complex mechanical systems have been examined and prototypes developed. The areas of investigation covered in this work are hydropower turbines, rails and the main cooling pumps in a nuclear power-plant. The interest in diagnostics for hydropower turbines was driven by the obvious risk of contamination of water by oil leaks and expensive refurbishments caused by wear of the Kaplan turbine vane bearings. The intrest in risk analysis was motivated by Vattenfall's intrest in gaining knowledge about the state of all turbines in the company. The aim of this project was to develop a generic model of hydropower turbine behavior using physics-based models based on material properties, load tolerances, etc.. An important question was whether it was possible to predict the wear rate and plan predictive replacement or maintenance. A systematic approach to find failure modes, their effects, their causes and consequences in combination with Fault Tree Analysis was needed. The objective of this project was to examine a systematic approach to map failure modes and their causes in an hydropower turbine. We have restricted the study to turbine units of the Kaplan, Francis and tube types. The objective of the study concerning rail track was to develop methods and equipment for detection of surface damage in rail track rail in addition to the present system of practice of visual examination. The equipment developed has to be used to obtain objective statistical data for evaluating maintenance methods and efforts. We have restricted the study to spalling and headchecks on the rail head surface and running edge. The method developed enables measurements of different types of surface damage such as spalling and shelling to be made with inductive transducers sensitive to the distance to the measured object. The assumption here is that the damage being detected is characterized by the absence of material from rail surface. The main object of condition monitoring of the cooling pumps was to be able to detect bearing wear in order to be able to plan and carry out restoration well ahead of breakdown or bearing seizure. The study was restricted to the main cooling pump motor and its main bearings. Condition monitoring of the pumps was done using a method based on current measurements. Analysis of the currents on the main cooling pump of the power plant proved that it is possible to monitor the condition of the pump in spite of the presence of electronic frequency converters which distorts the signal.

Godkänd; 2002; 20070222 (ysko)

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Söderberg, Anders. "Interface modeling - friction and wear." Doctoral thesis, KTH, Maskinkonstruktion (Avd.), 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-9861.

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The general trend toward increased use of computer models and simulations during product development calls for accurate and reliable product models. The function of many products relies on contact interfaces between interacting components. Simulating the behavior of such products requires accurate models of both components and interfaces. Depending on the purpose of the simulation, interface models of different degrees of detail are needed. In simulating very large systems with many interfaces, it might be computationally expensive to integrate detailed models of each individual interface. Condensed models, or abstractions, that describe the interface properties with the fewest degrees of freedom are therefore required. This thesis deals with the modeling and simulation of mechanical interfaces in a systems context. The five appended papers discuss the issue from both the simulation and tribological points of view. The aim is to study how friction and wear can be modeled in the behavioral simulation of technical systems and to discuss the convenience and applicability of using different types of models as building blocks of a system model in simulations. Paper A reviews existing friction models of sliding contacts under different running conditions. Paper B uses a simplified contact model, the elastic foundation model, to model friction in a boundary-lubricated rolling and sliding contact. The model is integrated into a dynamic rigid body model of a mechanical system, and the system behavior is simulated. Paper C discusses the application of the elastic foundation model to rough surface contact problems and investigates how the error in its results depends on surface roughness. Papers D and E address how the wear of the contact surfaces at the pad-to-rotor interface in a passenger car disc brake can be simulated using finite element analysis (FEA).
QC 20100811
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Söderberg, Anders. "Interface modeling : friction and wear /." Stockholm : Maskinkonstruktion, Kungliga Tekniska högskolan, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-9861.

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6

Ogano, Satoshi. "Electrochemical control of friction and wear." Thesis, Imperial College London, 1998. http://hdl.handle.net/10044/1/7416.

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Russell, Serena Louisa. "Friction, wear, wear debris and functional biocompatibility of cartilage substitution biomaterials." Thesis, University of Leeds, 2010. http://etheses.whiterose.ac.uk/12742/.

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The friction, wear and biological response to hydrogels, thermoset and thermoplastic polyurethanes were investigated in order to determine their suitability as potential cartilage substitution biomaterials. A single station pin-on-plate friction rig was utilised to determine the friction properties of these materials when articulated against articular cartilage plates and stainless steel plates. These materials were also reciprocated against stainless steel plates with smooth and rough surfaces using a six station multidirectional wear rig to generate clinically relevant sized wear particles which were characterised in terms of particle number and area as a function of size. Aseptically generated wear particles from the thermoset and thermoplastic polyurethanes were generated utilising a single station pin-on-plate wear rig and cultured with peripheral blood mononuclear cells to establish their biological activity by assessing the release of four cytokines (tumour necrosis factor-alpha, interleukin-lβ, interleukin-6 and interleukin-8) using an enzyme-linked immunosorbent assay. Friction tests demonstrated that articular cartilage (articulated against itself) exhibited a low coefficient of friction which was concurrent with the literature. The thermoplastic polyurethanes and hydrogels (against articular cartilage) exhibited statistically similar friction characteristics compared to articular cartilage against itself, however, the hydrogels generated considerable wear. In contrast, the friction characteristics of the thermoset polyurethanes were significandy higher than the friction of articular cartilage against itself. When wear particles were generated against stainless steel plates with smooth and rough surfaces, it was clear that the largest percentage number of particles were either < 0.1 or 0.1-1.0 11m in size, however, the percentage area of these particles was more variable and was either in the 0.1-1.0 μm, 1-10 μm or > 10 μm size range. Diprane SOD was the least biologically active material, as cells from two donors out of three were stimulated to release elevated levels of cytokines. Diprane SOD and Corethane 5SD were the only two materials to stimulate cells from donors to significandy release three cytokines out of four. All other materials stimulated an elevated level of all four cytokines from cells from all three donors.
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Kong, Hosung. "Friction and wear at sliding ceramic surfaces." Thesis, University of Cambridge, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386230.

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9

Dong, Sheng. "Friction and Wear Reduction via Ultrasonic Lubrication." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1437560338.

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Schroeder, Matthew O. "Biotribology : articular cartilage friction, wear, and lubrication /." Thesis, This resource online, 1995. http://scholar.lib.vt.edu/theses/available/etd-12302008-063639/.

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Книги з теми "WEAR AND FRICTION ASSESSMENT"

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Garshin, Anatoliy, Aleksey Nilov, and Viktor Kulik. Friction fiber-reinforced ceramic-matrix composite materials. ru: INFRA-M Academic Publishing LLC., 2023. http://dx.doi.org/10.12737/1989212.

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The monograph summarizes the results of the analysis of the main features of fiber-reinforced composite materials with a ceramic matrix and fiber fillers used for their reinforcement. The main technological methods of obtaining ceramic-matrix composites based on solid, gas and liquid-phase processes are considered. The results of the assessment of the current state and prospects for the development of friction elements in braking systems of high-energy transport equipment are presented. The main directions of increasing the corrosion, heat and wear resistance of composite materials with a ceramic matrix are considered, as well as evaluation of the physico-mechanical and thermophysical characteristics of composite materials with a ceramic matrix designed to work under conditions of high mechanical and temperature loads and abrasive wear. Recommendations on the selection of friction pairs for brake discs made of composite materials with a ceramic matrix are given. For students, postgraduates and teachers of technical universities and faculties.
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Fischer, Alfons, and Kirsten Bobzin, eds. Friction, Wear and Wear Protection. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2009. http://dx.doi.org/10.1002/9783527628513.

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Ludema, Kenneth C., and Oyelayo O. Ajayi. Friction, Wear, Lubrication. Second edition. | Boca Raton : Taylor & Francis, CRC Press,[2019]: CRC Press, 2018. http://dx.doi.org/10.1201/9780429444715.

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4

Straffelini, Giovanni. Friction and Wear. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-05894-8.

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5

Igor £ Viktorovich Kragel £skii . Friction and wear. London: Butterworths, 1987.

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6

International Symposium on Friction, Wear and Wear Protection (2008 Aachen, Germany). Friction, wear and wear protection: International Symposium on Friction, Wear and Wear Protection 2008, Aachen, Germany. Weinheim, Germany: Wiley-VCH, 2009.

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7

Denton, R., and MK Keshavan, eds. Wear and Friction of Elastomers. 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959: ASTM International, 1992. http://dx.doi.org/10.1520/stp1145-eb.

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Lyubimov, Dmitrij, Kirill Dolgopolov, and Leonid Pinchuk. Micromechanisms of Friction and Wear. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-35148-8.

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Gnecco, Enrico, and Ernst Meyer, eds. Fundamentals of Friction and Wear. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-36807-6.

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Said, Jahanmir, ed. Friction and wear of ceramics. New York: M. Dekker, 1994.

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Частини книг з теми "WEAR AND FRICTION ASSESSMENT"

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Kim, In-Ju. "Friction and Wear Mechanisms." In Pedestrian Fall Safety Assessments, 121–48. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-56242-1_5.

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Pakowski, Czesław, Tomasz J. Kałdoński, and Tadeusz Kałdoński. "Continuous Method for Assessment of Wear under Conditions of Technically Dry Friction." In Solid State Phenomena, 415–19. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/3-908451-21-3.415.

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Salem, Amr, Hussien Hegab, and Hossam A. Kishawy. "Environmental Assessment and Optimization When Machining with Micro-textured Cutting Tools." In Lecture Notes in Mechanical Engineering, 364–72. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-28839-5_41.

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AbstractThe dry machining strategy has recently received high attention in the field of metal cutting as it can eliminate the environmental impacts associated with the usage of cutting fluids. However, high-generated heat and severe tool wear are usually observed for the dry machining operations. One of the suggested techniques to improve the dry machining performance is to utilize the textured cutting tools, reducing the friction at the chip-tool interface. In this study, three different micro-textured tool designs were used during the machining AISI 1045 at different cutting conditions. A life cycle assessment was performed including the power consumption for preparing the textured tool designs and the measured power during the machining experiments. Furthermore, some measured machining outputs (flank wear, surface roughness, and the unit volume machining time) were further included to offer a comprehensive and effective sustainability assessment for the performance of the utilized textured tools. The performance of these textured tools was also compared with the non-textured tool under the same cutting conditions. The textured tool design with narrow micro-groove width showed better sustainable performance compared to the non-textured tool and other textured tool designs.
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Ludema, Kenneth C., and Oyelayo O. Ajayi. "Wear." In Friction, Wear, Lubrication, 151–80. Second edition. | Boca Raton : Taylor & Francis, CRC Press,[2019]: CRC Press, 2018. http://dx.doi.org/10.1201/9780429444715-9.

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Popov, Valentin L. "Wear." In Contact Mechanics and Friction, 271–84. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-10803-7_17.

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Popov, Valentin L. "Wear." In Contact Mechanics and Friction, 299–315. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-53081-8_17.

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Hutchings, Ian, Mark Gee, and Erich Santner. "Friction and Wear." In Springer Handbook of Metrology and Testing, 743–68. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-16641-9_13.

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Hutchings, Ian, Mark Gee, and Erich Santner. "Friction and Wear." In Springer Handbook of Materials Measurement Methods, 685–710. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/978-3-540-30300-8_13.

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Brown, R. P. "Friction and wear." In Physical Testing of Rubber, 168–86. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-011-0529-3_10.

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Menezes, Pradeep L., Michael Nosonovsky, Satish V. Kailas, and Michael R. Lovell. "Friction and Wear." In Tribology for Scientists and Engineers, 43–91. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-1945-7_2.

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Тези доповідей конференцій з теми "WEAR AND FRICTION ASSESSMENT"

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Zhang, Yanyan, Yiming Liang, Shiqiang Zhu, Menglong Ding, Yunhe Bai, Haoyuan Du, Jason Gu, and Tiefeng Li. "Advances in artificial joint bio-friction and wear simulation assessment technology." In 2022 IEEE International Conference on Robotics and Biomimetics (ROBIO). IEEE, 2022. http://dx.doi.org/10.1109/robio55434.2022.10011908.

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Agarwal, Avinash Kumar, Jayashree Bijwe, and L. M. Das. "Wear Assessment in a Biodiesel Fuelled Compression Ignition Engine." In ASME 2001 Internal Combustion Engine Division Spring Technical Conference. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/ices2001-131.

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Abstract Biodiesel is prepared using linseed oil and methanol by the process of transesterification. Use of linseed oil methyl ester (LOME) in compression ignition engine was found to develop a highly compatible engine-fuel system with low emission characteristics. Two similar engines were operated using optimum biodiesel blend and mineral diesel oil respectively. These were subjected to long-term endurance tests. Lubricating oil samples drawn from both engines after a fixed interval were subjected to elemental analysis. Quantification of various metal debris concentrations was done by atomic absorption spectroscopy (AAS). Wear metals were found to be about 30% lower for biodiesel-operated engine system. Lubricating oil samples were also subjected to ferrography indicating lower wear debris concentrations for biodiesel-operated engine. The additional lubricating property of LOME present in the fuel resulted in lower wear and improved life of moving components in biodiesel-fuelled engine. However, this needed experimental verification and quantification. A series of experiments were thus conducted to compare the lubricity of various concentrations of LOME in biodiesel blends. Long duration tests were conducted using reciprocating motion in SRV optimol wear tester to evaluate the coefficient of friction, specific wear rates, etc. The extent of damage, coefficient of friction, and specific wear rates decreased with increase in the percentage of LOME in the biodiesel blend. Scanning Electron microscopy was conducted on the surfaces exposed to wear. The disc and pin using 20% biodiesel blend as lubricating oil showed lesser damage compared to the one subjected to diesel oil as lubricating fluid, confirming additional lubricity of biodiesel.
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Maschewske, Max, Kimm Karrip, and Carol Lynn Deck. "Advanced Tribological Assessment of Ring Coatings." In ASME 2012 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/icef2012-92139.

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Friction reduction within the power cylinder assembly of internal combustion engines continues to be a one of the foremost focuses of engine manufactures. In an effort to better address this topic previously developed bench test rigs, such as the Falex, Cameron-Plint, and EMA-LS9 [1,2], have been utilized. These devices were formerly focused solely on wear mechanisms and material compatibility. Current development of new piston ring coatings has demanded significant refinements to the previously mentioned EMA-LS9 test rig for specific frictional characteristic evaluations. These developments have allowed for coefficient of friction ranking between various piston ring materials in addition to the influence and surface finish on coefficient of friction. This paper examines how the test rig is utilized to characterize upper compression ring materials, surface treatments, and the impact of surface finish. The significance of these results will be examined as it applies to analytical evaluations. From these calculations a demonstration of the effect of surface finish on ring dynamics and gas flow, as well as future piston ring coating developments will be discussed.
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Ranganathan, Soundararajan, Shri Vignesh Ramachandran, Ramprakash Palanivelu, and Saravanakumar Ramasamy. "Critical Wear Assessment of AA8011/Hybrid Metal Matrix Composites with Surface Amendment Using Friction Stir Process." In International Conference on Advances in Design, Materials, Manufacturing and Surface Engineering for Mobility. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2019. http://dx.doi.org/10.4271/2019-28-0096.

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Rubiolo, Pablo R., and Michael Y. Young. "On the Factors Affecting the Fretting-Wear Risk of PWR Fuel Assemblies." In 14th International Conference on Nuclear Engineering. ASMEDC, 2006. http://dx.doi.org/10.1115/icone14-89490.

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An analysis of the factors affecting the fretting-wear risk of fuel assemblies operated in Pressurized Water Reactors (PWR) is presented. In this work the effect of rod-to-grid gap size, spring relaxation, assembly grids misalignments, rod structural damping and stiffness, and friction coefficients are investigated by performing Monte Carlo simulations with a non-linear vibration model of the fuel rod. The goal of the study is to identify key factors that have to be included in the assessment of the fretting-wear performance of core fuel assemblies.
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Li, C. James, and Yimin Fan. "Recurrent Neural Networks for Fault Diagnosis and Severity Assessment of a Screw Compressor." In ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-0404.

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Abstract This paper describes a method to diagnose the most frequent faults of a screw compressor and assess the magnitude of these faults. To determine the condition of the compressor, a feedforward neural network model is first identified from the compressor’s operating data. A recurrent neural network is then used to classify the model into one of three conditions including baseline, gaterotor wear and excessive friction. Finally, another recurrent neural network estimates the magnitude of fault from the model. The method’s ability to generalize was evaluated. Experimental validation of the method was also performed. The results show significant improvement over the previous method which used only feedforward neural networks.
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Ramachandran, Madhumitha, Jon Keegan, and Zahed Siddique. "Degradation Assessment of Reciprocating Seal Using Support Vector Regression." In ASME 2019 14th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/msec2019-2820.

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Abstract Reciprocating seal located directly on the rod/piston of a reciprocating equipment is used for preventing leakage and reducing wear between two parts that are in relative motion. Degradation assessment of reciprocating seal is extremely important in the manufacturing industry to avoid fatal breakdown of reciprocating equipment and machines. In this paper, we have proposed a data-driven prognostics approach using friction force to predict the degradation of reciprocating seal using Support Vector Regression. Statistical time domain features are extracted from friction force signal to reduce the complexity of raw data. Principal Component Analysis is used to fuse the relevant features and remove the redundant features from the process. Based on the selected features, a Support Vector Regression model is then built and trained for the prediction of seal degradation. A Grid search method is used to tune the hyperparameters in the SVR model. Run-to-failure data collected from an experimental test set-up is used to validate the proposed methodology. The study findings indicate that a small set of relevant features which can represent the pattern related to degradation is sufficient to have a high prediction accuracy. The seal tested for this study comes from oil and gas industry, but the proposed method can be implemented in any industry with reciprocating equipment and machines.
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Tesar, T., R. Musalek, J. Medricky, J. Cizek, F. Lukac, J. Dudik, and S. Houdkova. "Tribological Properties of Hybrid Plasma Sprayed Coatings." In ITSC2022. DVS Media GmbH, 2022. http://dx.doi.org/10.31399/asm.cp.itsc2022p0773.

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Abstract Deposition of hybrid plasma-sprayed coatings employing both dry powder and liquid feedstocks enables preparation of innovative coating architectures. Using this technique, miniature domains of additional (secondary) material may be introduced via the liquid feedstock route into the more conventional powder-deposited coating, providing potential benefits for the coating functionality. In this contribution, we have explored the tribological properties of hybrid coatings sprayed from alumina powder with additions of chromia (Cr2O3), zirconia (ZrO2), yttria-stabilized zirconia (YSZ), and titania (TiO2) delivered from liquid feedstocks. The coatings were subjected to dry sliding wear testing and a subsequent analysis of the wear tracks to determine their wear resistance and coefficient of friction, as well as a qualitative assessment of the wear mechanisms. The hybrid coating doped with the chromia addition matched the remarkable wear resistance of highly-dense suspension-sprayed coatings. This is a significant result, especially when considering the order of magnitude better production efficiency of the hybrid coatings.
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Anandavel, K., and Raghu V. Prakash. "An Assessment of Centrifugal Loading Effect of Rotor Disc on Fretting Variables at a Dovetail Interface of an Aero-Engine." In ASME 2012 Gas Turbine India Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gtindia2012-9691.

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This paper presents the influence of centrifugal (CF) loading of aero-engine rotor disc on fretting variables at a dovetail interface. A detailed investigation is carried out on the fretting variables such as contact traction, slip, and contact stress at macroscopic level. Three-dimensional (3D) finite element (FE) analysis approach is used for prediction of fretting variables. The study is carried out for frictionless and friction interface (μ = 0.7) for the case of Titanium alloy. The slip level increase of about 48 % and 110% is observed for frictional and frictionless condition respectively, due to rotational effect of disc. Different contact traction ratio distribution over the interface is also observed with the CF load of rotating disc. The study suggests the consideration of centrifugal loading effect is important for improved prediction of critical fretting variables, as they would impact the evaluation fretting fatigue and wear characteristics at the interface.
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Previati, G., and M. Gobbi. "Test Bench for Characterization and Durability Tests of Motorbike Clutches." In ASME 2021 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/detc2021-70007.

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Abstract In the paper, a new test bench for characterization and durability assessment of multi disc wet clutches for motorbike applications is presented. The design of the new test bench is inspired by the current SAE standards J2490 and J286 that refer to the testing of friction material for automatic transmissions wet clutches. Differently from the test bench described in the two standards, which is mainly designed to test the friction material, the test bench presented in this paper has been designed for testing the whole clutch, comprising all discs and the actuation mechanism. The lubrication system of the clutch utilized on the test bench is very similar to the one present on the actual motorbike. The design and instrumentation of the new test rig is analysed and discussed in the paper. The test bench has been used for the characterization of different motorbike clutches. The bench has proved to be able to measure the clutch characteristic for different temperatures and clutch wear levels. A very good repeatability of the tests has been achieved allowing for a comparison of different clutches design, friction material properties and operating conditions (temperature, ..). Some experimental results are presented and discussed in the paper.
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Звіти організацій з теми "WEAR AND FRICTION ASSESSMENT"

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Jewsbury, P. The WAFTER (Wear and Friction Tester): A Versatile Wear and Friction Tester. Fort Belvoir, VA: Defense Technical Information Center, June 1987. http://dx.doi.org/10.21236/ada187596.

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Ron Matthews. REDUCED ENGINE FRICTION AND WEAR. Office of Scientific and Technical Information (OSTI), May 2005. http://dx.doi.org/10.2172/843071.

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Ron Matthews. REDUCED ENGINE FRICTION AND WEAR. Office of Scientific and Technical Information (OSTI), July 2003. http://dx.doi.org/10.2172/821853.

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Rigney, D. A. Continuing Research on Friction and Wear of Materials. Fort Belvoir, VA: Defense Technical Information Center, March 1994. http://dx.doi.org/10.21236/ada277690.

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Fleischauer, P. D., S. V. Didziulis, and J. R. Lince. Friction and Wear Properties of MoS2 Thin-Film Lubricants. Fort Belvoir, VA: Defense Technical Information Center, April 2002. http://dx.doi.org/10.21236/ada401523.

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Burton, R. A., and R. G. Burton. Friction and wear of glass carbon in sliding contact. Office of Scientific and Technical Information (OSTI), September 1989. http://dx.doi.org/10.2172/5657362.

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Namavar, Fereydoon. Nanograin, Quasicrystalline, Multiphase Coatings for Reduced Friction an Wear. Fort Belvoir, VA: Defense Technical Information Center, September 2000. http://dx.doi.org/10.21236/ada389053.

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R.R. Fessler and G.R. Fenske. Multiyear Program Plan: Reducing Friction and Wear in Heavy Vehicles. Office of Scientific and Technical Information (OSTI), December 1999. http://dx.doi.org/10.2172/771210.

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Satapathy, S., and C. Persad. Friction and Wear Sciences for a Highly Durable Railgun Weapon. Fort Belvoir, VA: Defense Technical Information Center, October 2007. http://dx.doi.org/10.21236/ada474864.

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Kuksenova, L. I. WEAR RESISTANCE OF BRONZES UNDER FRICTION IN SURFACE-ACTIVE LUBRICANTS. DOI СODE, 2022. http://dx.doi.org/10.18411/vntr2022-167-3.

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