{"title":"Atypical Hardening Caused by Current and Plastic Deformation","authors":"V. V. Stolyarov","doi":"10.1134/S1052618824700080","DOIUrl":"10.1134/S1052618824700080","url":null,"abstract":"<p>Based on literary and experimental data, the effects accompanying the passage of pulsed current and associated structural changes in metals and alloys have been considered briefly. The special role of the type and modes of current, as well as the nature of the material, has been shown. The results of studies of the interaction of electric current and plastic deformation by quasi-static tension in pure metals, titanium alloys with martensitic transformation, and steels have been presented. It is assumed that the causes of the detected deformation effects are the ratio of the period and duration of the pulse, cycling of stress and temperature, changes in the deformation mechanism, reversible transformations, changes in grain size, and the appearance of particles of second phases. Variation of the duty cycle makes it possible to regulate the ratio of thermal and electroplastic effects and thereby influence the mechanisms of hardening/softening.</p>","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":"53 3","pages":"212 - 217"},"PeriodicalIF":0.4,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141170142","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 the Main Factors Affecting the Increase in the Friction Coefficient of Interacting Surfaces of Rail Vehicles","authors":"A. M. Keropyan, A. Yu. Albagachiev","doi":"10.1134/S1052618824700055","DOIUrl":"10.1134/S1052618824700055","url":null,"abstract":"<p>As a result of theoretical studies, it was established that the coefficient of friction of the interacting surfaces of rail vehicles is significantly influenced by the roughness of the contacting surfaces, the actual contact area, the temperature in the contact zone of the wheel-rail system, and the speed of mutual sliding (slip) of the contacting surfaces. It has been established that, in order to ensure the strength criterion and reduce wear, it is necessary to limit the temperature in the contact zone of the wheel–rail system within 300°С by controlling the sliding speed of the wheel relative to the rail. It has been revealed that the effective functioning of the wheel–rail system can be realized through the interaction of the machined working surfaces of the wheel and rail with roughness <i>Rz</i> 20–40 µm. Implementation of the proposed technical solutions using tribological research methods will allow for the possibility of increasing the friction coefficient of wheel–rail systems by up to 27%.</p>","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":"53 3","pages":"208 - 211"},"PeriodicalIF":0.4,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141170374","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}
F. G. Akhmatshin, I. A. Petrova, L. A. Kazakovtsev, I. N. Kravchenko
{"title":"Reducing the James–Stein Shrinkage Estimator for Automatically Grouping Heterogeneous Production Batches","authors":"F. G. Akhmatshin, I. A. Petrova, L. A. Kazakovtsev, I. N. Kravchenko","doi":"10.1134/S1052618824700043","DOIUrl":"10.1134/S1052618824700043","url":null,"abstract":"<p>A reduction in the James–Stein shrinkage estimator might significantly increase the accuracy of cluster analysis of <i>k</i>-means for a relatively broad range of data. The efficiency of using the James–Stein shrinkage estimator for automatically grouping industrial products in homogeneous production batches is considered. Tests are conducted for batches of integrated circuits by comparing the shrinkage results with those obtained using the traditional <i>k-</i>means algorithm. The dataset is normalized according to the values of the acceptable drift, acceptable parameters, and standard deviation. As established using the Rand index, clustering is far more accurate in the automatic grouping of industrial products in homogeneous production batches, when average values of inconclusive parameters drop to zero. It is established that the reduction of the James–Stein shrinkage estimator decreases the influence of inconclusive parameters of standard data to acceptable values.</p>","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":"53 3","pages":"254 - 262"},"PeriodicalIF":0.4,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141170078","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":"Improvement of Technical Operation of Rolling Stock through the Application of New Synthetic Lubricant Compositions","authors":"B. P. Trofimenko, A. V. Markelov","doi":"10.1134/S1052618824700092","DOIUrl":"10.1134/S1052618824700092","url":null,"abstract":"<p>The possibility of using water-based lubricants in bearings is examined. An overview of the different types of water-based lubricants, their composition and properties, and methods of their application in bearings are provided. Particular attention is paid to studies showing the effectiveness of water-based lubricants in reducing friction and wear and increasing the energy efficiency of bearings. The research results confirm the potential of water-based lubricants for use in various industrial sectors where high performance and reduced environmental impact are required. Valuable information for engineers and manufacturers seeking to improve bearing performance and reduce the environmental impact is provided.</p>","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":"53 3","pages":"248 - 253"},"PeriodicalIF":0.4,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141170117","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":"Physical and Mechanical Properties of Electrospark Coatings Applied by Electrospark Treatment with a Composite Electrode","authors":"V. P. Lyalyakin, V. A. Denisov, A. A. Evsyukov","doi":"10.1134/S1052618824700122","DOIUrl":"10.1134/S1052618824700122","url":null,"abstract":"<p>Electric spark machining allows coated parts to be coated with any electrically conductive materials, ensuring good adhesion to the base material, thereby restoring worn surfaces. However, limitations on the thickness of the applied coating significantly affect its distribution when restoring parts with wear of more than 0.2 mm. One way to solve this problem when restoring parts with increased wear is electric spark processing using composite electrodes with carbon nanotubes. Thanks to the use of a composite electrode with carbon nanotubes, it was possible to increase the thickness of the coating by 2–4 times, which will expand the range of the restored parts. At the same time, the microhardness of the coatings decreased when carbon nanotubes were added to the electrode, but under certain conditions it was possible to achieve a microhardness value comparable to coatings from BrO10S10 electrodes.</p>","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":"53 3","pages":"203 - 207"},"PeriodicalIF":0.4,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141170144","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":"Nonlinear Deformation and Load-Loading Capacity of Quadrangular Composite Panels","authors":"N. S. Azikov, A. V. Zinin","doi":"10.1134/S105261882470002X","DOIUrl":"10.1134/S105261882470002X","url":null,"abstract":"<p>The supercritical deformation of quadrangular multilayer composite panels has been studied, taking into account geometric nonlinearity for deflections commensurate with the thickness of the plate. The solution of the problem on eigenvalues and eigenvectors is carried out in displacements by the Rayleigh–Ritz method. The dependences of the deflection amplitude on the contour forces were found, and basic relations were obtained for assessing the stress–strain state of composite quadrangular panels with arbitrary boundary conditions after loss of stability in compression and shear. Based on the strength criteria of anisotropic materials, the destructive forces after loss of stability are determined.</p>","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":"53 3","pages":"226 - 235"},"PeriodicalIF":0.4,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141170145","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":"Method of Calculating the Operational Reliability of Standard Process Systems","authors":"A. S. Akhmedov, M. S. Ragimova, F. M. Gafarov","doi":"10.1134/S1052618824700079","DOIUrl":"10.1134/S1052618824700079","url":null,"abstract":"<p>This study considers the application of standard operation array designs of cementing equipment using various numbers of pumping and mixing facilities for ensuring uninterrupted implementation of the cementing process. A design operational reliability model of various standard piping layouts is developed. Several piping layout types are considered individually. According to the outfit-mouth function chart, a ready-mix mud is pumped by the facility right into the well.</p>","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":"53 3","pages":"236 - 239"},"PeriodicalIF":0.4,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141170786","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":"Assessment of the Influence of Equipment on the Experimental Result When Determining the Sound Insulation Parameters of a Panel Structure","authors":"P. A. Popov, A. A. Igolkin, E. V. Shakhmatov","doi":"10.1134/S1052618824700109","DOIUrl":"10.1134/S1052618824700109","url":null,"abstract":"<p>A scientific approach based on analysis of the acoustic noise intensity, based on the theory of mathematical series, which made it possible to solve successfully the problem of assessing the error of results obtained when conducting experiments to find sound insulation parameters, is presented. Identified patterns found their application in the process of designing a special structure for an experiment.</p>","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":"53 3","pages":"271 - 279"},"PeriodicalIF":0.4,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141173237","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}
P. V. Golinitskii, U. Yu. Antonova, G. N. Temasova, E. I. Cherkasova, D. U. Khasyanova
{"title":"Digitalization of Fault Detection in Crankshafts","authors":"P. V. Golinitskii, U. Yu. Antonova, G. N. Temasova, E. I. Cherkasova, D. U. Khasyanova","doi":"10.1134/S1052618824700031","DOIUrl":"10.1134/S1052618824700031","url":null,"abstract":"<p>This article considers the application of digital technologies in repair agencies, considering several peculiarities, such as heterogeneous manufactured output, unsteady manufacturing as well as detailed checkout, application of the process-based approach together with automated control systems, automated preproduction engineering, equipment control and information collection, and enterprise management. The unified information environment formed by these systems reduces the number of incorrectly rejected and accepted parts by 75–80% and excludes wrong repair decisions and reduces the time needed for decision-making.</p>","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":"53 3","pages":"263 - 270"},"PeriodicalIF":0.4,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141170491","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}
Yu. G. Matvienko, I. E. Vasil’ev, D. V. Chernov, A. G. Kalinin, A. V. Pankov
{"title":"Structural–Phenomenological Concept and Acoustic-Emission Diagnostics of Composite Stringers under Three-Point Bending Conditions","authors":"Yu. G. Matvienko, I. E. Vasil’ev, D. V. Chernov, A. G. Kalinin, A. V. Pankov","doi":"10.1134/S1052618824700018","DOIUrl":"10.1134/S1052618824700018","url":null,"abstract":"<p>The essence of the proposed methodology for monitoring the kinetics of damage to a deformed material is to establish a correspondence between micro-, meso-, and macrodamage, and the acoustic emission pulses generated in this case. During the loading process of a product, the recorded pulses are divided into pulse flows of low (H), middle (C), and high (B) energy levels, corresponding to the energy of destruction of structural bonds. By calculating the current values of the partial content of acoustic emission pulses in the H, C, and B clusters generated by micro-, meso-, and macrodamage, and comparing them with the threshold ones established during destruction, the load-bearing capacity current level of a product during loading is determined. Application of the developed methodology for identifying zones of developing damage and assessing the load-bearing capacity of the current state of stringers under loading conditions during interlayer shear tests is considered.</p>","PeriodicalId":642,"journal":{"name":"Journal of Machinery Manufacture and Reliability","volume":"53 3","pages":"240 - 247"},"PeriodicalIF":0.4,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141170245","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}