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Increasing the Performance Indicators of Construction Equipment by Improving the Hydraulic Drive of a Working Body 通过改进工作车身的液压驱动装置提高建筑设备的性能指标
Russian Engineering Research Pub Date : 2024-06-26 DOI: 10.3103/s1068798x24700722
N. A. Fomenko, O. V. Dushko, O. V. Burlachenko, V. G. Polyakov, S. A. Chebanova, S. I. Makhova, O. A. Rastyapina
{"title":"Increasing the Performance Indicators of Construction Equipment by Improving the Hydraulic Drive of a Working Body","authors":"N. A. Fomenko, O. V. Dushko, O. V. Burlachenko, V. G. Polyakov, S. A. Chebanova, S. I. Makhova, O. A. Rastyapina","doi":"10.3103/s1068798x24700722","DOIUrl":"https://doi.org/10.3103/s1068798x24700722","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The design of the hydraulic drive, which ensures the reciprocating motion of the knife of uprooter’s cutting bracket, is improved. This technical solution increases the productivity of the uprooter used during infill construction.</p>","PeriodicalId":35875,"journal":{"name":"Russian Engineering Research","volume":"176 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141506927","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
Heat and Mass Transfer in Composites with Thermal Waves due to Phase Transitions 复合材料中的传热和传质与相变引起的热波
Russian Engineering Research Pub Date : 2024-06-26 DOI: 10.3103/s1068798x24700898
V. F. Formalev, S. A. Kolesnik, B. A. Garibyan
{"title":"Heat and Mass Transfer in Composites with Thermal Waves due to Phase Transitions","authors":"V. F. Formalev, S. A. Kolesnik, B. A. Garibyan","doi":"10.3103/s1068798x24700898","DOIUrl":"https://doi.org/10.3103/s1068798x24700898","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>On the basis of standard data for the density and the initial and final temperatures in the decomposition (pyrolysis) of thermoprotective binder composites, the law describing their decomposition is identified. That law permits determination of the mass of gases generated at the thermal wavefront, which takes the form of a narrow pyrolytic zone. The gases filter through the porous coke residue to the external boundary, and so affect the thermal state of the thermoprotective composite. On the basis of the law derived, the analysis of the composite’s pyrolysis is simplified, because there is no need to take account of the chemical kinetics.</p>","PeriodicalId":35875,"journal":{"name":"Russian Engineering Research","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141524807","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
Optimization of Composition, Cold Rolling Scheme, and Structure of Brass Strip Billets for Continuous High-Frequency Pressure Welding 优化用于连续高频压力焊接的黄铜带坯的成分、冷轧方案和结构
Russian Engineering Research Pub Date : 2024-06-26 DOI: 10.3103/s1068798x24700825
M. Z. Pevzner, D. G. Sergeev
{"title":"Optimization of Composition, Cold Rolling Scheme, and Structure of Brass Strip Billets for Continuous High-Frequency Pressure Welding","authors":"M. Z. Pevzner, D. G. Sergeev","doi":"10.3103/s1068798x24700825","DOIUrl":"https://doi.org/10.3103/s1068798x24700825","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The article presents the results of analysis of the influence of the thickness, deformation scheme, grain size, and chemical composition of annealed strip billets made of L68 alloy on the quality of tubes for continuous pressure welding after high-frequency induction heating. Two methods of obtaining billets for welding tubes made of silicon-alloyed brass that ensure high tube quality are considered.</p>","PeriodicalId":35875,"journal":{"name":"Russian Engineering Research","volume":"50 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141532004","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
Heat Stabilization of Polydimethylphenylsilazane 聚二甲基苯基硅氮烷的热稳定化
Russian Engineering Research Pub Date : 2024-06-26 DOI: 10.3103/s1068798x24700989
V. A. Pogodin, A. N. Astapov
{"title":"Heat Stabilization of Polydimethylphenylsilazane","authors":"V. A. Pogodin, A. N. Astapov","doi":"10.3103/s1068798x24700989","DOIUrl":"https://doi.org/10.3103/s1068798x24700989","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The modification of polydimethylphenylsilazane with an epoxy oligomer for use as a binder in the technology of producing ceramic matrix composites (CMCs) is considered. As a result of the modification, the yield of pyrolysis residue increased from 21 to 60 wt %.</p>","PeriodicalId":35875,"journal":{"name":"Russian Engineering Research","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141524813","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
Single Tracks Obtained by Selective Laser Melting: Analysis of Digital Images 通过选择性激光熔化获得的单一轨迹：数字图像分析
Russian Engineering Research Pub Date : 2024-06-26 DOI: 10.3103/s1068798x24700916
V. N. Dobryanskiy, K. S. Korobov, L. N. Rabinskiy
{"title":"Single Tracks Obtained by Selective Laser Melting: Analysis of Digital Images","authors":"V. N. Dobryanskiy, K. S. Korobov, L. N. Rabinskiy","doi":"10.3103/s1068798x24700916","DOIUrl":"https://doi.org/10.3103/s1068798x24700916","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The potential of digital image analysis based on the Segment Anything Model (SAM) in analyzing the morphology of single tracks obtained by selective laser melting (SLM) is considered. A digital microscope produces images of single tracks obtained at different scanning speeds and different laser source power. The images are automatically analyzed: the single tracks are classified by external appearance and their width is recorded. The quality of the initial digital images and the presence of thermal influence zones significantly affect the agreement of the measurements obtained by automatic analysis and the measurements obtained by microscopy of transverse sections.</p>","PeriodicalId":35875,"journal":{"name":"Russian Engineering Research","volume":"2017 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141524808","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
Experience of Production of Innovative Industrial Equipment 生产创新型工业设备的经验
Russian Engineering Research Pub Date : 2024-06-26 DOI: 10.3103/s1068798x24700837
S. V. Usov, A. V. Zhdanov, A. N. Mitrofanov, I. P. Tochilin
{"title":"Experience of Production of Innovative Industrial Equipment","authors":"S. V. Usov, A. V. Zhdanov, A. N. Mitrofanov, I. P. Tochilin","doi":"10.3103/s1068798x24700837","DOIUrl":"https://doi.org/10.3103/s1068798x24700837","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The article presents the experience of production of machine equipment for mixed and laser processing techniques in Russia. The presented approach has been used for creation and deployment into industrial production of electrochemical die-sinking and hole-contouring machines, equipment for electrochemical diamond honing, and automated technological complexes for laser machining.</p>","PeriodicalId":35875,"journal":{"name":"Russian Engineering Research","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141532006","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
Thermal State of Composites at Failure 复合材料失效时的热状态
Russian Engineering Research Pub Date : 2024-06-26 DOI: 10.3103/s1068798x24700886
E. L. Kuznetsova, G. I. Kriven’
{"title":"Thermal State of Composites at Failure","authors":"E. L. Kuznetsova, G. I. Kriven’","doi":"10.3103/s1068798x24700886","DOIUrl":"https://doi.org/10.3103/s1068798x24700886","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Identification of the decomposition law of the binder in composites provides the basis for a mathematical model and analysis of the thermal state of most composites in significantly nonsteady high-temperature loading. The decomposition law of the binder permits analysis of the thermal state of composites without considering the chemical kinetics. Verification of the numerical results confirms the validity of this approach to modeling the thermal state of composites for use in hypersonic aircraft.</p>","PeriodicalId":35875,"journal":{"name":"Russian Engineering Research","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141524806","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 a Locknut on Load Distribution along the Threads of the Screw of a Tightened Threaded Connection 锁紧螺母对拧紧螺纹连接螺杆螺纹上载荷分布的影响
Russian Engineering Research Pub Date : 2024-06-26 DOI: 10.3103/s1068798x24700734
A. S. Ivanov, S. V. Murkin, E. S. Novikov
{"title":"Effect of a Locknut on Load Distribution along the Threads of the Screw of a Tightened Threaded Connection","authors":"A. S. Ivanov, S. V. Murkin, E. S. Novikov","doi":"10.3103/s1068798x24700734","DOIUrl":"https://doi.org/10.3103/s1068798x24700734","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Assuming that the deformation of the threads of the screw, nut and locknut are caused mainly by the contact flexibility of their working surface, the load distribution along the threads of the screw is studied. It is found that if the locknut is tightened with a force equal to half the tightening force of the nut, then the loads on the first turns of the nut and locknut will become the same, amounting to approximately half the load on the most loaded turn of the screw tightened without a locknut.</p>","PeriodicalId":35875,"journal":{"name":"Russian Engineering Research","volume":"59 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141506928","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
Stress–Strain State of a Half-Space Induced by a Mobile Laser Source 移动激光源诱导半空间的应力应变状态
Russian Engineering Research Pub Date : 2024-06-26 DOI: 10.3103/s1068798x2470093x
L. N. Rabinskiy, A. A. Orekhov, T. S. Tereshchenko
{"title":"Stress–Strain State of a Half-Space Induced by a Mobile Laser Source","authors":"L. N. Rabinskiy, A. A. Orekhov, T. S. Tereshchenko","doi":"10.3103/s1068798x2470093x","DOIUrl":"https://doi.org/10.3103/s1068798x2470093x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Determining the thermal stress in selective laser melting (SLM) of a metal–powder composite within a single layer requires the solution of an auxiliary problem: analysis of the nonsteady heating of an isotropic half-space by a mobile laser source. The results are used in creating a surface influence function for a thermoelastic half-space.</p>","PeriodicalId":35875,"journal":{"name":"Russian Engineering Research","volume":"46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141532011","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
Fretting Wear of a Sealing Gasket in a Flanged Joint 法兰连接中密封垫片的摩擦磨损
Russian Engineering Research Pub Date : 2024-06-26 DOI: 10.3103/s1068798x24700783
O. Yu. Elagina, O. B. Dubinova
{"title":"Fretting Wear of a Sealing Gasket in a Flanged Joint","authors":"O. Yu. Elagina, O. B. Dubinova","doi":"10.3103/s1068798x24700783","DOIUrl":"https://doi.org/10.3103/s1068798x24700783","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The influence of the roughness of a steel surface on the slipping friction coefficient and wear of a sealing gasket in a flanged joint is studied. The dependence of the frictional coefficient on the surface roughness <i>Ra</i> of the steel part and the applied force is established. The critical tangential stress for the flange–gasket assembly is determined: at the critical stress, the surface layer of the sealing gasket fails, and sealing of the joint is lost.</p>","PeriodicalId":35875,"journal":{"name":"Russian Engineering Research","volume":"66 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141524802","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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