Transport engineering最新文献

{"title":"ENGINEERING RISK ANALYSIS AT THE OPERATIONAL STAGE OF THE LIFE CYCLE CONTRACT AS A MODEL FOR THE TRANSITION TO FORMING A DIGITAL TWIN OF ROLLING STOCK","authors":"Andrey Shinkaruk, Rafik Rafikov, D. Evseev, Mikhail Kulikov, Nikita Goryunov","doi":"10.30987/2782-5957-2024-3-49-58","DOIUrl":"https://doi.org/10.30987/2782-5957-2024-3-49-58","url":null,"abstract":"The study objective is to consider main risks that arise during operation of a passenger train. Integration of various regulatory bases into a single analytical base for each unit of passenger rolling stock, followed by the formation of their digital twin with the possibility of automatic formation of their residual life, formation of a risk map of equipment failure, cost analysis and reduction of its distraction in an idle fleet.","PeriodicalId":510317,"journal":{"name":"Transport engineering","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140246069","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}

{"title":"TECHNOLOGIES FOR INCREASING THE DURABILITY OF PASSENGER CAR WHEELS","authors":"D. Evseev, Vladimir Biryukov, Yuri Kulikov, Anton Yakubovsky","doi":"10.30987/2782-5957-2024-3-41-48","DOIUrl":"https://doi.org/10.30987/2782-5957-2024-3-41-48","url":null,"abstract":"The cut of passenger cars due to wear damage to the rolling surface of the wheelset in 2022 is considered. It is found out that the most typical damage is a shelled tread. An analysis of the methods for restoring the rolling profile of wheels showed that the wheel milling with an end mill can be used as a promising one. To assess the effectiveness of the method, metallographic and tribological studies of wheel samples subjected to turning and milling are compared. According to the study results, it is found that when machining samples of wheel steel by end milling, their wear resistance is 22% higher, compared with samples machined by turning, the wear rate of samples of rail steel is lower in a friction pair with milled samples than with turned samples due to a decrease in the friction factor of milling samples.","PeriodicalId":510317,"journal":{"name":"Transport engineering","volume":"14 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140244959","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}

{"title":"STUDY OF PHYSICO-CHEMICAL AND ANTI-WEAR PROPERTIES OF MOTOR OILS AT THE END OF OPERATION","authors":"M. Shalygin, Sergey Vashchishin, A. Vashchishina","doi":"10.30987/2782-5957-2024-3-12-19","DOIUrl":"https://doi.org/10.30987/2782-5957-2024-3-12-19","url":null,"abstract":"There is given the study of viscous properties of engine oil, depending on the temperature before and after change on modern domestic gasoline and diesel cars, the determination of spectral characteristics and X-ray fluorescence analysis of wear particles after mileage. The degree of viscosity of semi-synthetic oils of two types is estimated. The oils were cooled and heated up to 150 °C. A digital viscometer was used, the dynamic viscosity of all oils decreased with increasing temperature, which is associated with oxidation in waste oil. To assess the effect of motor oil on engine operation, IR spectrometric analysis is performed and the thickness of the lubricating film is determined. The test results showed a qualitative and quantitative change in the characteristic frequencies of the new engine oil and the spent one after 10,000 km. X-ray fluorescence analysis makes it possible to analyze wear products and determine which mechanism in the engine is most susceptible to wear. Lines have characteristic absorption frequencies and indicate a change in physico-chemical properties of oil in the engine. An increase in contamination and in the viscosity of used oils is associated with the presence of impurities formed during the oxidation and polymerization of the base oil. It is necessary to increase the number of samples and sampling during different periods of operation so that you can verify the same effect throughout the entire engine operation. The results obtained indicate that these methods can be used to analyze and control the mode of operation of oils in the engine, allowing to determine the wear and further apply appropriate additives to the oil to improve performance properties.","PeriodicalId":510317,"journal":{"name":"Transport engineering","volume":"1992 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140246559","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}

{"title":"CHOOSING THE CONVEYOR DRIVE LAYOUT TAKING INTO ACCOUNT UNCERTAIN OPERATING CONDITIONS","authors":"A. Reutov","doi":"10.30987/2782-5957-2024-3-31-40","DOIUrl":"https://doi.org/10.30987/2782-5957-2024-3-31-40","url":null,"abstract":"The problem of choosing a conveyor drive layout using fuzzy partial criteria for uncertain operating conditions is considered. \u0000The paper objective is to choose the conveyor drive layout with the best efficiency indicator based on fuzzy values of particular criteria, taking into account various operating conditions. \u0000Research methodology. When choosing conveyor drive layout fuzzy set theories and a multi-criteria assessment of alternatives are used. The generalized criterion is formed from fuzzy expert assessments of particular criteria, taking into account various operating conditions. To compare the alternatives based on theories of Laplace, Wald and Savage, dephasing values of the generalized criterion are used. \u0000The novelty of the work. A technique is developed for calculating efficiency indicators to select the best solution from a variety of alternatives based on theories of Laplace, Wald and Savage on fuzzy expert estimates of particular criteria for uncertain operating conditions. \u0000Results. The problem of choosing a conveyor drive layout from a set of acceptable alternatives is formulated. A technique is developed for calculating efficiency indicators and choosing a conveyor drive layout from a variety of alternatives. An example of choosing a conveyor belt choosing a conveyor drive layout from 5 alternatives for 12 possible conditions is considered. \u0000Conclusions. The developed technique of choosing a conveyor drive layout allows assess to systematically the importance of fuzzy particular criteria, the influence of uncertain operating conditions on the choice of a drive layout. An example of choosing a conveyor belt drive layout shows that according to Laplace and Wald theories, the best is a drive layout with two drive units in the head of the belt drive, according to Savage theory – a drive layout with two drive units in the head and one drive unit in the middle of the belt drive. Three drive layouts are not among the recommended ones for any of the efficiency indicators.","PeriodicalId":510317,"journal":{"name":"Transport engineering","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140245881","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}

{"title":"ANALYSIS OF METHODS TO DRESS ANNULAR DIAMOND DRILLS OF METAL BONDS","authors":"A. Fedukov","doi":"10.30987/2782-5957-2024-2-14-22","DOIUrl":"https://doi.org/10.30987/2782-5957-2024-2-14-22","url":null,"abstract":"The study objective is to analyze the existing methods to dress annular diamond drills of metal bonds and to develop new schemes of dressing used for diamond grinding tools. \u0000The paper is devoted to solving the problem, which consists in comparing different dressing methods, analyzing their disadvantages and advantages. \u0000Research methods are theoretical studies of various methods of annular diamond drill dressing. \u0000Novelty of the work: schemes for dressing annular diamond drills of metal bonds with free abrasive are developed. \u0000Research results: the existing methods and schemes for dressing annular diamond drills of metal bonds are analyzed, their main disadvantages and advantages are found. Dressing schemes for the free abrasive method are developed. \u0000Conclusions: when drilling hard non-metallic materials with annular diamond drills, the tool loses its functionality, glares and needs forced dressing. During the analysis, existing methods and possible dressing options are considered.","PeriodicalId":510317,"journal":{"name":"Transport engineering","volume":"47 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139777949","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}

{"title":"TECHNIQUE TO FIND OUT THE REMAINING SERVICE LIFE OF PASSENGER CAR BASED ON STATISTICAL DATA","authors":"D. Evseev, Sergey Lagutin","doi":"10.30987/2782-5957-2024-2-56-61","DOIUrl":"https://doi.org/10.30987/2782-5957-2024-2-56-61","url":null,"abstract":"A technique to find out the remaining service life of a passenger car based on statistical data of failures of passenger car elements is considered and described. \u0000The regulatory service life of many passenger cars is coming to an end, therefore it becomes necessary to find out the actual remaining life of the passenger car before its decommissioning and disposal.","PeriodicalId":510317,"journal":{"name":"Transport engineering","volume":"91 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139779279","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}

{"title":"TEMPERATURE DEPENDENCE OF THE FRONT LATHE TOOL SURFACE ON EVOLUTIONARY CHANGES IN TRIBO-DEFORMATION INDICATORS OF PROCESSING","authors":"Evgeny Fominov, V. Gvindzhiliya, Elena Fisunova, Andrey Marchenko, Viktoriya Suhomlinova","doi":"10.30987/2782-5957-2024-2-23-30","DOIUrl":"https://doi.org/10.30987/2782-5957-2024-2-23-30","url":null,"abstract":"The study objective is modeling the temperature distribution on the surface of a heavily loaded tribocontact - front surface of a lathe tool - chips taking into account evolutionary changes in the cutting system. \u0000The task to which the paper is devoted is to assess the influence of evolutionary changes of tribodeformation parameters of the cutting process on the average and maximum temperature of the front surface of the lathe tool. \u0000Research methods. Contact temperatures are found out on the basis of mathematical modeling using data obtained during field experiments at longitudinal turning of 15X2NMFA steel blanks without cooling by T15K6 hard alloy plates. During resistance tests, the chip contact length with the front surface and the chip reduction coefficient used for calculation are determined, as well as the average temperature in the cutting zone, the value of which is used to assess the adequacy of the results obtained by digital modeling. \u0000The novelty of the work. Forecasting the temperature increase on the front surface of the cutter, taking into account the contribution of evolutionary changes in tribodeformation parameters of cutting. \u0000The results of the study. In the studied cutting system, according to the results of resistance tests, a decrease in the chip reduction coefficient is recorded over the processing time. The temperature distribution on the front surface of the cutter is modeled in two versions: taking into account the evolutionary adjustment of the chip reduction coefficient and related parameters – sliding velocity and thickness of the plastically deformed layer in the chip, and without taking into account their changes. It is found out that modeling adjusted for changes in tribological indicators allows to obtain calculated values of the temperature of the front surface closest to the experimentally recorded of average temperature in the cutting zone. \u0000Conclusions: Forecasting contact temperatures adjusted for evolutionary changes in tribodeformation parameters will allow to determine more accurately the moment in the evolution of the cutting system at which critical temperature values can be reached, and further processing is associated with the risk of critical wear or deterioration of the treated surface.","PeriodicalId":510317,"journal":{"name":"Transport engineering","volume":"71 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139779320","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}

{"title":"TEMPERATURE DEPENDENCE OF THE FRONT LATHE TOOL SURFACE ON EVOLUTIONARY CHANGES IN TRIBO-DEFORMATION INDICATORS OF PROCESSING","authors":"Evgeny Fominov, V. Gvindzhiliya, Elena Fisunova, Andrey Marchenko, Viktoriya Suhomlinova","doi":"10.30987/2782-5957-2024-2-23-30","DOIUrl":"https://doi.org/10.30987/2782-5957-2024-2-23-30","url":null,"abstract":"The study objective is modeling the temperature distribution on the surface of a heavily loaded tribocontact - front surface of a lathe tool - chips taking into account evolutionary changes in the cutting system. \u0000The task to which the paper is devoted is to assess the influence of evolutionary changes of tribodeformation parameters of the cutting process on the average and maximum temperature of the front surface of the lathe tool. \u0000Research methods. Contact temperatures are found out on the basis of mathematical modeling using data obtained during field experiments at longitudinal turning of 15X2NMFA steel blanks without cooling by T15K6 hard alloy plates. During resistance tests, the chip contact length with the front surface and the chip reduction coefficient used for calculation are determined, as well as the average temperature in the cutting zone, the value of which is used to assess the adequacy of the results obtained by digital modeling. \u0000The novelty of the work. Forecasting the temperature increase on the front surface of the cutter, taking into account the contribution of evolutionary changes in tribodeformation parameters of cutting. \u0000The results of the study. In the studied cutting system, according to the results of resistance tests, a decrease in the chip reduction coefficient is recorded over the processing time. The temperature distribution on the front surface of the cutter is modeled in two versions: taking into account the evolutionary adjustment of the chip reduction coefficient and related parameters – sliding velocity and thickness of the plastically deformed layer in the chip, and without taking into account their changes. It is found out that modeling adjusted for changes in tribological indicators allows to obtain calculated values of the temperature of the front surface closest to the experimentally recorded of average temperature in the cutting zone. \u0000Conclusions: Forecasting contact temperatures adjusted for evolutionary changes in tribodeformation parameters will allow to determine more accurately the moment in the evolution of the cutting system at which critical temperature values can be reached, and further processing is associated with the risk of critical wear or deterioration of the treated surface.","PeriodicalId":510317,"journal":{"name":"Transport engineering","volume":"436 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139839516","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}

{"title":"PREDICTION OF WEAR RESISTANCE OF SLIDING COUPLERS","authors":"S. Shets, Arkady Mogilyov","doi":"10.30987/2782-5957-2024-2-4-13","DOIUrl":"https://doi.org/10.30987/2782-5957-2024-2-4-13","url":null,"abstract":"The necessity to predict optimal wear resistance of sliding couplers at the design stage is grounded. A tribological analysis of the wear of sliding couplers is carried out during the entire period of operation in various modes corresponding to the following stages: start-up, steady-state wear and shutdown. The existing approaches to solving contact problems in the interaction of solids, taking into account physico-mechanical processes in the surface layers of couplers during their wear, are analyzed. A wear model is proposed based on the destruction of the contacting surfaces of a coupler with the separation of particles, which size varies depending on the load characteristics, physico-mechanical and structural parameters, thermal properties, quality of the lubricant, etc. The results of testing prototypes for wear resistance and numerical implementation of the proposed model for predicting the wear resistance of a sliding coupler with similar characteristics are presented. It is found out that the proposed wear model makes it possible to predict (calculate) the wear resistance of a sliding coupler in a certain range by changing the initial data, thereby eliminating the need for rather laborious tests of couplers for wear under the influence of various factors.","PeriodicalId":510317,"journal":{"name":"Transport engineering","volume":"62 33","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139778820","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}

{"title":"TECHNIQUE TO FIND OUT THE REMAINING SERVICE LIFE OF PASSENGER CAR BASED ON STATISTICAL DATA","authors":"D. Evseev, Sergey Lagutin","doi":"10.30987/2782-5957-2024-2-56-61","DOIUrl":"https://doi.org/10.30987/2782-5957-2024-2-56-61","url":null,"abstract":"A technique to find out the remaining service life of a passenger car based on statistical data of failures of passenger car elements is considered and described. \u0000The regulatory service life of many passenger cars is coming to an end, therefore it becomes necessary to find out the actual remaining life of the passenger car before its decommissioning and disposal.","PeriodicalId":510317,"journal":{"name":"Transport engineering","volume":"500 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139838964","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}