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Tribologia: Finnish Journal of Tribology最新文献

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INFLUENCE OF THIN COATINGS FORMED BY ALD TECHNIQUESON THE PROPERTIES OF Ti13Nb13Zr TITANIUM ALLOY ALD技术形成的薄涂层对Ti13Nb13Zr钛合金性能的影响
Tribologia: Finnish Journal of Tribology Pub Date : 2022-05-31 DOI: 10.5604/01.3001.0015.8985
K. Piotrowska, M. Madej
{"title":"INFLUENCE OF THIN COATINGS FORMED BY ALD TECHNIQUES\u0000ON THE PROPERTIES OF Ti13Nb13Zr TITANIUM ALLOY","authors":"K. Piotrowska, M. Madej","doi":"10.5604/01.3001.0015.8985","DOIUrl":"https://doi.org/10.5604/01.3001.0015.8985","url":null,"abstract":"The article evaluates the properties of oxide films: Al2O3 and TiO2, deposited using the ALD method on the\u0000Ti13Nb13Zr alloy. It presents the results of examining the geometrical structure of the surface, nanohardness\u0000and tribological tests. The surface’s geometrical structure was tested through optical microscopy, and\u0000nanohardness was determined using the instrumental indentation method with a Berkovich indenter. The\u0000modelling tribological tests were performed in a reciprocating motion under the conditions of technically dry\u0000friction and with lubrication using Ringer's solution. An analysis of the results of tribological tests indicates\u0000that the films were characterised by lower motion resistances and wear with respect to the Ti13Nb13Zr\u0000alloy. Hardness measurements indicate that, as a result of deposition of the films, the hardness increased by\u0000approximately 51% in the case of the Al2O3 film and by approximately 44% in the case of the TiO2 coating.\u0000The produced test results constitute a source of knowledge about the Ti13Nb13Zr alloy, oxide films and the\u0000possibilities of their potential application to low-load biotribological systems.\u0000\u0000","PeriodicalId":35004,"journal":{"name":"Tribologia: Finnish Journal of Tribology","volume":"2015 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86217642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
ANALYSIS OF THE WEAR PROCESS OF SURFACE LAYERS AFTERBURNISHING 抛光后表层磨损过程分析
Tribologia: Finnish Journal of Tribology Pub Date : 2022-05-31 DOI: 10.5604/01.3001.0015.8988
A. Zaborski
{"title":"ANALYSIS OF THE WEAR PROCESS OF SURFACE LAYERS AFTER\u0000BURNISHING","authors":"A. Zaborski","doi":"10.5604/01.3001.0015.8988","DOIUrl":"https://doi.org/10.5604/01.3001.0015.8988","url":null,"abstract":"The paper presents the results of an analysis of the wear process under conditions of dry technical friction\u0000of surface layers after selecting external surface pressure burnishing methods. The possibility of making\u0000changes in the burnishing process leading to an increase in resistance to wear under conditions of a simulated\u0000exploitation process is described. The possibility of conscious control of the process of material deformation\u0000in the zone of contact between the tool and the workpiece in the course of the surface layer formation process\u0000by changing the method and technological parameters of the pressure burnishing process is used. The course\u0000and results of the wear process of surfaces pressure burnished with a rolling ball, disc, and sliding ball are\u0000analysed. A description of the wear mechanism and comparative results of the wear of the surfaces tested are\u0000presented.\u0000\u0000","PeriodicalId":35004,"journal":{"name":"Tribologia: Finnish Journal of Tribology","volume":"190 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79583496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
SHAFT BEARING OF WIND TURBINE WITH VERTICAL AXIS OF ROTATION 具有垂直旋转轴的风力发电机轴轴承
Tribologia: Finnish Journal of Tribology Pub Date : 2022-05-31 DOI: 10.5604/01.3001.0015.8981
W. Grzegorzek, D. Adamecki, J. Mikuła, W. Borek, Grzegorz Głuszek, S. Mikuła
{"title":"SHAFT BEARING OF WIND TURBINE WITH VERTICAL AXIS OF ROTATION","authors":"W. Grzegorzek, D. Adamecki, J. Mikuła, W. Borek, Grzegorz Głuszek, S. Mikuła","doi":"10.5604/01.3001.0015.8981","DOIUrl":"https://doi.org/10.5604/01.3001.0015.8981","url":null,"abstract":"This article describes a new design solution for a hybrid bearing intended for use in prosumer wind turbines\u0000with a vertical axis of rotation of the turbine rotor. The automatic rotational speed-dependent load-switching,\u0000lubrication and cooling systems applied in the hybrid bearing ensure a particularly long service life and highly\u0000quiet running while maintaining high energy efficiency over the full rotational speed range of shafts with\u0000turbine rotors. The hybrid bearing design has been adapted to the use of lubricating fluids with the lowest\u0000possible viscosity, including oil-water emulsions and even water itself. The use of water as a lubricant makes\u0000the bearing system highly environmentally friendly and completely fire-safe.\u0000\u0000","PeriodicalId":35004,"journal":{"name":"Tribologia: Finnish Journal of Tribology","volume":"109 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90210930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
CRACKS DEVELOPMENT FORMED AS A RESULT OF CYCLICMICRO-IMPACTS ON THE SURFACE OF ANTI-WEAR COATINGS 抗磨涂层表面的微循环冲击形成裂纹
Tribologia: Finnish Journal of Tribology Pub Date : 2022-05-31 DOI: 10.5604/01.3001.0015.8983
Jolanta Krupa, S. Zimowski
{"title":"CRACKS DEVELOPMENT FORMED AS A RESULT OF CYCLIC\u0000MICRO-IMPACTS ON THE SURFACE OF ANTI-WEAR COATINGS","authors":"Jolanta Krupa, S. Zimowski","doi":"10.5604/01.3001.0015.8983","DOIUrl":"https://doi.org/10.5604/01.3001.0015.8983","url":null,"abstract":"Fatigue tests are commonly used to define the mechanical properties of materials intended for responsible\u0000components operating in various conditions. The fatigue strength of monolithic materials is most often\u0000determined during bending, tensile, compression, or torsion tests. The growing area of thin, hard coatings\u0000application forced the researchers to extend the fatigue tests to the coating-substrate systems. Since the\u0000behaviour of complex, modern materials are not subject to general rules, it is necessary to conduct investigation\u0000and analyses and generalise the results of these tests for given groups of materials. In this article, microimpact\u0000fatigue tests were performed to analyse the behaviour of single- and double-layer chromium and\u0000chromium nitride coatings. The microhardness and elastic modulus obtained by an indentation method were\u0000used to determine the influence of mechanical properties of the coatings on their fatigue wear. After the fatigue\u0000tests, the deformation of the coating/substrate system was examined, taking into account the geometry of the\u0000craters, and the forms of coating wear caused mainly by cracking were analysed.\u0000\u0000","PeriodicalId":35004,"journal":{"name":"Tribologia: Finnish Journal of Tribology","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79081661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
CALCULATIONS OF TILTING-PAD THRUST BEARINGS 倾斜垫推力轴承的计算
Tribologia: Finnish Journal of Tribology Pub Date : 2022-04-30 DOI: 10.5604/01.3001.0015.8366
Edward Murdzia, S. Strzelecki
{"title":"CALCULATIONS OF TILTING-PAD THRUST BEARINGS","authors":"Edward Murdzia, S. Strzelecki","doi":"10.5604/01.3001.0015.8366","DOIUrl":"https://doi.org/10.5604/01.3001.0015.8366","url":null,"abstract":"The application of thrust bearings in different engineering designs generates problems of thermal state, which\u0000generates the wear of the fixed or tilting pads of bearings. These problems can be avoided by means of\u0000proper methods and numerical algorithms of calculations of the bearing static characteristics, including the\u0000maximum oil film temperature. The knowledge of thermal state of bearings should assure safe, reliable, and\u0000durable bearing operation and is important for the designers of thrust bearings.\u0000 This paper presents the results of calculations of some static characteristics of a tilting-pad thrust bearing,\u0000including its maximum oil film temperature. Numerical solution by means of finite differences was applied\u0000for the solution of geometry, Reynolds, energy, and viscosity equations. Adiabatic oil film laminar flow in the\u0000bearing gap was considered. The developed code of the computation of bearing performances creates a tool\u0000that leads to the solution of thermal problems. Different values of operating speeds were assumed.\u0000\u0000","PeriodicalId":35004,"journal":{"name":"Tribologia: Finnish Journal of Tribology","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73080334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
TESTING THE COBALT ION EMISSION ON THE STANDFOR DIFFERENT ANGLES OF POSITIONING THE COMPONENTSOF THE METAL–METAL HIP JOINT ENDOPROSTHESIS 对金属-金属髋关节内假体构件在不同定位角度的支架上进行钴离子发射测试
Tribologia: Finnish Journal of Tribology Pub Date : 2021-12-30 DOI: 10.5604/01.3001.0015.6899
T. Wiśniewski, M. Libera
{"title":"TESTING THE COBALT ION EMISSION ON THE STAND\u0000FOR DIFFERENT ANGLES OF POSITIONING THE COMPONENTS\u0000OF THE METAL–METAL HIP JOINT ENDOPROSTHESIS","authors":"T. Wiśniewski, M. Libera","doi":"10.5604/01.3001.0015.6899","DOIUrl":"https://doi.org/10.5604/01.3001.0015.6899","url":null,"abstract":"The paper deals with the subject related to the assessment of the influence of the axis angle of the metal\u0000components of the hip joint on the emission of cobalt ions. The tribological tests were carried out with the use\u0000of a simulator for the examination of hip joint endoprostheses, the structure of which enables the fixation of\u0000endoprosthesis components in accordance with the anatomical structure of the human hip joint. During the\u0000tests, the simulator performs flexion and extension movements as well as loads occurring in the human hip\u0000joint while walking. Loss-wear tests were carried out for nine variants of the “head–cup” system settings.\u0000These settings were determined on the basis of CT images obtained from patients after arthroplasty. After\u0000the tribological tests were completed, samples of the lubricating fluid with the wear products suspended in it\u0000were collected in order to determine the concentration of cobalt ions, which was carried out using the atomic\u0000absorption spectrometry method. As a result, the influence of the head antetorsion angle (α) and the acetabular\u0000anteversion angle (β) on the concentration of cobalt ions was analysed.\u0000\u0000","PeriodicalId":35004,"journal":{"name":"Tribologia: Finnish Journal of Tribology","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84834500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
EFFECT OF HUMIDITY ON TRIBOLOGICAL PROPERTIESOF SELECTED FRICTION JUNCTIONS WITH AN EVALUATIONOF ACOUSTIC EMISSION 湿度对所选摩擦结摩擦学性能的影响及声发射评价
Tribologia: Finnish Journal of Tribology Pub Date : 2021-12-30 DOI: 10.5604/01.3001.0015.6892
Tomasz Desaniuk, Dominika Soboń, W. Jurczak
{"title":"EFFECT OF HUMIDITY ON TRIBOLOGICAL PROPERTIES\u0000OF SELECTED FRICTION JUNCTIONS WITH AN EVALUATION\u0000OF ACOUSTIC EMISSION","authors":"Tomasz Desaniuk, Dominika Soboń, W. Jurczak","doi":"10.5604/01.3001.0015.6892","DOIUrl":"https://doi.org/10.5604/01.3001.0015.6892","url":null,"abstract":"The study aimed to compare the effect of humidity on the operation of tribological systems. The tested friction\u0000and wear are external properties; therefore, their values may differ significantly depending on the operating\u0000parameters of the friction junction and environmental conditions. Tribological tests were carried out on a\u0000TRB3 tribometer in a dry sliding mode at a relative humidity of 50% ± 5% and 90% ± 5% in the ball-on-disc\u0000configuration with a load of 15 N. The friction junction consisted of a sample made of 100Cr6 steel, and\u0000three counter-samples were made of 100Cr6, SiC, and Al2O3 steel. The geometric structure of the surface\u0000was examined with an optical profiler. The tribological test results showed reduced linear wear and friction\u0000coefficient at a relative humidity of 90% ± 5% compare to its 50% ± 5%. The paper also presents the results\u0000for the sound recorded in the 16-bit linear PCM standard and analysed in a Spectra-Plus program.\u0000\u0000","PeriodicalId":35004,"journal":{"name":"Tribologia: Finnish Journal of Tribology","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89413465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
CLASSIFICATION AND MODELLING OF SOUND EMISSIONSIGNALS IN SELECTED TRIBOSYSTEMS 选定摩擦系统中声发射信号的分类和建模
Tribologia: Finnish Journal of Tribology Pub Date : 2021-12-30 DOI: 10.5604/01.3001.0015.6893
M. Kekez, W. Jurczak, D. Ozimina
{"title":"CLASSIFICATION AND MODELLING OF SOUND EMISSION\u0000SIGNALS IN SELECTED TRIBOSYSTEMS","authors":"M. Kekez, W. Jurczak, D. Ozimina","doi":"10.5604/01.3001.0015.6893","DOIUrl":"https://doi.org/10.5604/01.3001.0015.6893","url":null,"abstract":"The paper presents an analysis of the sound level recorded during dry sliding friction conditions. Balls with\u0000a diameter of 6 mm placed on pins were made of 100Cr6 steel, silicon carbide (SiC), and corundum (Al2O3),\u0000while rotating discs with a height of 6 mm and a diameter of 42 mm were made of 100Cr6 steel. Each pin and\u0000disc system was tested for two values of the relative humidity of the air (50 ± 5% and 90 ± 5%). Models of\u0000the A-sound level were developed using regression trees and random forest. The paper presents an analysis\u0000of the accuracy of the models obtained. Classifications of the six tests performed on the basis of sound level\u0000descriptors were also carried out.\u0000\u0000","PeriodicalId":35004,"journal":{"name":"Tribologia: Finnish Journal of Tribology","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75019379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A GEOMETRICAL SURFACE TEXTURE STUDY OF CYCLOIDDRIVE DISCS AFTER BENCH TESTS 台架试验后摆线轮驱动盘的几何表面织构研究
Tribologia: Finnish Journal of Tribology Pub Date : 2021-12-30 DOI: 10.5604/01.3001.0015.6894
K. Olejarczyk, M. Kalbarczyk
{"title":"A GEOMETRICAL SURFACE TEXTURE STUDY OF CYCLOID\u0000DRIVE DISCS AFTER BENCH TESTS","authors":"K. Olejarczyk, M. Kalbarczyk","doi":"10.5604/01.3001.0015.6894","DOIUrl":"https://doi.org/10.5604/01.3001.0015.6894","url":null,"abstract":"The article presents the results of a geometrical surface texture study of cycloid drive discs after bench tests.\u0000For this purpose, the working surfaces, such as peak and valley areas of the epicycloid and the holes inner\u0000surfaces of both discs, were investigated using contact profilometry. From each surface, a transverse profiles\u0000were extracted, before and after 50 cycles of bench test. The discs and the profiles were examined for signs\u0000of wear and roughness changes. For each profile, the Ra and Rz roughness parameters were determined. On\u0000the base of the obtained profiles and the values of roughness parameters, it can be stated that the assumed\u0000test parameters provide stable working conditions, with an uninterrupted lubrication film, which results in\u0000practically negligible and unmeasurable wear. Taking into account the operating specification of a helicopter\u0000winch as an example of potential application of the presented cycloidal drive, the developed solution fulfils\u0000the requirements concerning wear resistance.\u0000\u0000","PeriodicalId":35004,"journal":{"name":"Tribologia: Finnish Journal of Tribology","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84626380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
THE IMPACT OF SELECTED PARAMETERS ON PRESSUREDISTRIBUTION IN THE FACE THROTTLE OF A CENTRIFUGALPUMP AUTOMATIC BALANCING DEVICE 选取参数对离心泵自动平衡装置端面节流压力分布的影响
Tribologia: Finnish Journal of Tribology Pub Date : 2021-12-30 DOI: 10.5604/01.3001.0015.6895
Y. Tarasevych, N. Sovenko
{"title":"THE IMPACT OF SELECTED PARAMETERS ON PRESSURE\u0000DISTRIBUTION IN THE FACE THROTTLE OF A CENTRIFUGAL\u0000PUMP AUTOMATIC BALANCING DEVICE","authors":"Y. Tarasevych, N. Sovenko","doi":"10.5604/01.3001.0015.6895","DOIUrl":"https://doi.org/10.5604/01.3001.0015.6895","url":null,"abstract":"Face throttles are a necessary functional element of non-contact face seals and automatic balancing devices of\u0000centrifugal pumps of different constructions. To calculate the hydrodynamic forces and moments acting on the\u0000rotor and fluid flow through the automatic balancing device, it is necessary to know the pressure distribution\u0000in the cylindrical and face throttle when considering all important factors which predetermine fluid flow.\u0000The face throttle surfaces are moving, which leads to unsteady fluid flow. The movement of the walls of the\u0000face throttle causes an additional circumferential and radial flow, which subsequently leads to the additional\u0000hydrodynamic pressure components. The paper analyses viscous incompressible fluid flow in the face throttle\u0000of an automatic balancing device taking into account the axial and angular displacements of throttle’s surfaces\u0000and the inertia component of the fluid. The effect of local hydraulic losses as well as random changes in the\u0000coefficients of local hydraulic resistance at the inlet and outlet of the throttle is analysed.\u0000\u0000","PeriodicalId":35004,"journal":{"name":"Tribologia: Finnish Journal of Tribology","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90838354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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