发布求助
文献互助 智能选刊 最新文献

Technical Physics Letters最新文献

筛选
英文 中文
Enhancing the Functional Characteristics of Cast Parts Produced by Additive Technologies through Surface Roughness Reduction Using Electrochemical Polishing 通过电化学抛光降低表面粗糙度来增强增材制造铸件的功能特性
IF 0.8 4区 物理与天体物理
Technical Physics Letters Pub Date : 2026-06-28 DOI: 10.1134/S1063785026700409
N. F. Kashapov, M. R. Fazlyev, I. F. Timerbaev, L. N. Kashapov
{"title":"Enhancing the Functional Characteristics of Cast Parts Produced by Additive Technologies through Surface Roughness Reduction Using Electrochemical Polishing","authors":"N. F. Kashapov,&nbsp;M. R. Fazlyev,&nbsp;I. F. Timerbaev,&nbsp;L. N. Kashapov","doi":"10.1134/S1063785026700409","DOIUrl":"10.1134/S1063785026700409","url":null,"abstract":"<p>The objective of this work is to reduce the surface roughness parameters (Ra, Rz) of nickel-based alloy turbine blades, manufactured by investment casting using a 3D-printed polystyrene pattern, to the levels required by technical documentation through electrochemical polishing (ECP). Initial and final roughness values were measured with a contact profilometer “Model 130 (Version 7)” in accordance with GOST 2789-73; notations follow GOST ISO 1302. It is demonstrated that ECP ensures a significant reduction of Ra and Rz on both the concave and convex blade surfaces, including cases with preliminary blasting. The treatment was performed locally, without full immersion: only the required surface areas were polished. The influence of the obtained roughness values on the aerohydrodynamic efficiency of the flow section is discussed, as well as the applicability of ECP as a preparatory stage for functional coatings.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":"52 3","pages":"107 - 109"},"PeriodicalIF":0.8,"publicationDate":"2026-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148323741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Influence of the Gaponov–Miller Effect on a Radio-Frequency Inductively Coupled Jet Discharge at Reduced Pressure Gaponov-Miller效应对减压下射频电感耦合射流放电的影响
IF 0.8 4区 物理与天体物理
Technical Physics Letters Pub Date : 2026-06-28 DOI: 10.1134/S1063785026700410
A. A. Esinalin, V. S. Zheltukhin
{"title":"The Influence of the Gaponov–Miller Effect on a Radio-Frequency Inductively Coupled Jet Discharge at Reduced Pressure","authors":"A. A. Esinalin,&nbsp;V. S. Zheltukhin","doi":"10.1134/S1063785026700410","DOIUrl":"10.1134/S1063785026700410","url":null,"abstract":"<p>The mechanism of plasma jet contraction in a reduced-pressure radio-frequency inductive discharge is examined. It is established that the Gaponov–Miller effect has the greatest influence on plasma flow compression. A modified form of the equations for a mathematical model of a reduced-pressure radio-frequency inductively coupled discharge is presented.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":"52 3","pages":"104 - 106"},"PeriodicalIF":0.8,"publicationDate":"2026-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148323743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Modification of the Surface Properties Polytetrafluoroethylene and Polypropylene Films by a Nonthermal Plasma Jet at Atmospheric Pressure 常压下非热等离子体射流对聚四氟乙烯和聚丙烯薄膜表面性能的改性
IF 0.8 4区 物理与天体物理
Technical Physics Letters Pub Date : 2026-06-28 DOI: 10.1134/S1063785026700471
B. B. Baldanov, A. P. Semenov, Ts. V. Ranzhurov, D. N. Tsyrenzhapov, A. V. Balzhanov
{"title":"Modification of the Surface Properties Polytetrafluoroethylene and Polypropylene Films by a Nonthermal Plasma Jet at Atmospheric Pressure","authors":"B. B. Baldanov,&nbsp;A. P. Semenov,&nbsp;Ts. V. Ranzhurov,&nbsp;D. N. Tsyrenzhapov,&nbsp;A. V. Balzhanov","doi":"10.1134/S1063785026700471","DOIUrl":"10.1134/S1063785026700471","url":null,"abstract":"<p>The change in the wettability of polytetrafluoroethylene and polypropylene films under the action of nonthermal argon plasma based on atmospheric pressure plasma jets was studied. Plasma treatment of polytetrafluoroethylene and polypropylene leads to a decrease in the contact wetting angle during the first seconds, then changes slightly and reaches an almost constant value of θ = 63° for polytetrafluoroethylene and θ = 38° for polypropylene. It was also found that the modification area of the films significantly exceeds the size of the installation nozzle.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":"52 3","pages":"85 - 87"},"PeriodicalIF":0.8,"publicationDate":"2026-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148323745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An Automatic Watering System on Cattle-Fattening Farms 养牛场的自动浇水系统
IF 0.8 4区 物理与天体物理
Technical Physics Letters Pub Date : 2026-06-28 DOI: 10.1134/S1063785026700501
T. N. Tolstoukhova, I. V. Nazarov, A. A. Potseluev
{"title":"An Automatic Watering System on Cattle-Fattening Farms","authors":"T. N. Tolstoukhova,&nbsp;I. V. Nazarov,&nbsp;A. A. Potseluev","doi":"10.1134/S1063785026700501","DOIUrl":"10.1134/S1063785026700501","url":null,"abstract":"<p>Cattle-fattening farms utilize both dead-end and ring configurations for water supply systems and their individual subsystems. While ring systems provide uniform pressure and consistent water temperature in automatic watering subsystems, they incur higher material and installation costs. Dead-end systems, conversely, are shorter and less expensive but fail to provide water circulation. This absence of circulation in cold weather can lead to water cooling or even freezing at dead ends, potentially causing pipeline damage and negatively impacting livestock health and productivity. This research aims to improve the design of dead-end automatic watering systems by ensuring a stable temperature mode and enhancing operational reliability. By systematically analyzing scientific data and existing technical solutions for livestock water supply and automatic watering, the authors developed a modernized water-supply system featuring an automatic watering subsystem with a regulating tank. This subsystem, designed as a “pipe-in-a-pipe” configuration, enables periodic water circulation, maintains water temperature within specified limits, and prevents thawing. The article presents a hydraulic calculation method for determining the optimal vacuum depth in a humidifier. The calculations indicate that this “pipe-in-a-pipe” design reduces system cost by 15–20%, improves reliability, maintains water temperature in automatic watering troughs within 12–15°C, and lowers installation and maintenance expenses by 10%. These results will facilitate the future production of an upgraded automatic watering system and further study of its operational parameters.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":"52 4","pages":"197 - 202"},"PeriodicalIF":0.8,"publicationDate":"2026-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148323659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An Investigation of the Effect of the Thickness of Individual Magnesium Layers on the Sorption and Desorption Characteristics of Layered Magnesium Films with Nickel 镁层厚度对含镍层状镁膜吸脱附特性影响的研究
IF 0.8 4区 物理与天体物理
Technical Physics Letters Pub Date : 2026-06-28 DOI: 10.1134/S1063785026700355
A. A. Kulakova, E. S. Chebukov, M. I. Yurchenkov, A. G. Ivanov, D. A. Karpov
{"title":"An Investigation of the Effect of the Thickness of Individual Magnesium Layers on the Sorption and Desorption Characteristics of Layered Magnesium Films with Nickel","authors":"A. A. Kulakova,&nbsp;E. S. Chebukov,&nbsp;M. I. Yurchenkov,&nbsp;A. G. Ivanov,&nbsp;D. A. Karpov","doi":"10.1134/S1063785026700355","DOIUrl":"10.1134/S1063785026700355","url":null,"abstract":"<p>The purpose of this study was to study the dependence of the sorption properties of layered metal films with different thicknesses of individual Mg/Ni-based layers obtained by magnetron sputtering. Layered Mg/Ni structures with different thicknesses of individual Mg layers were obtained (0.25, 0.5, 1, and 2 μm); and the sorption/desorption properties of the obtained samples were studied to determine the optimal parameters. The film with a magnesium layer thickness of 0.5 μm has the best performance in terms of sorption capacity.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":"52 3","pages":"122 - 125"},"PeriodicalIF":0.8,"publicationDate":"2026-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148323665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mathematical Modeling of the Stress-Strain State of Layered Composite Materials 层状复合材料应力-应变状态的数学建模
IF 0.8 4区 物理与天体物理
Technical Physics Letters Pub Date : 2026-06-28 DOI: 10.1134/S106378502670029X
B. A. Snigerev
{"title":"Mathematical Modeling of the Stress-Strain State of Layered Composite Materials","authors":"B. A. Snigerev","doi":"10.1134/S106378502670029X","DOIUrl":"10.1134/S106378502670029X","url":null,"abstract":"<p>A mathematical model for calculating the stress-strain state of a product consisting of layered composite materials has been developed. When constructing a mathematical model of a product, three-dimensional equations of the theory of elasticity are used. The components of the desired displacements are approximated by linear polynomials along the coordinate normal to the median surface of the body according to the classical Kirchhoff–Love theory. Using the Lagrange variational principle, a system of differential equations of equilibrium and the corresponding boundary conditions are obtained. The solution of the formulated boundary value problem is carried out by consistent application of the finite element method. The results obtained by the proposed theory are compared with the data presented in publications by other authors.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":"52 3","pages":"146 - 148"},"PeriodicalIF":0.8,"publicationDate":"2026-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148323749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Dynamic Model of a Porous Gradient Medium and Classification of Wave Processes 多孔梯度介质的动态模型与波过程的分类
IF 0.8 4区 物理与天体物理
Technical Physics Letters Pub Date : 2026-06-28 DOI: 10.1134/S1063785026700112
M. S. Egorova
{"title":"A Dynamic Model of a Porous Gradient Medium and Classification of Wave Processes","authors":"M. S. Egorova","doi":"10.1134/S1063785026700112","DOIUrl":"10.1134/S1063785026700112","url":null,"abstract":"<p>The paper presents a generalized dynamic model of a porous gradient medium based on a variational approach. The Lagrangian of the medium includes kinetic and potential energies that depend on deformations of the elastic matrix and the scalar porosity field, as well as on their spatial gradients. A closed system of equations of motion and a porosity balance equation containing 11 physical constants describing the elastic, inertial, and gradient properties of the material, as well as the effects of interaction between fields, is obtained. The types of dynamic interaction are classified into three independent channels: kinetic, “algebraic” potential, and gradient potential. The dispersion relations of longitudinal waves are investigated for various special cases of the model. The asymptotic dependences of frequency on the wavenumber in the long- and short-wave regions are established, and the conditions of the existence of waves and the ranges of “locking” (opacity) of the medium are revealed.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":"52 2","pages":"39 - 43"},"PeriodicalIF":0.8,"publicationDate":"2026-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148323920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Studying the Frictional Power Loss in a Refrigeration Rotary Vane Compressor with a Working Fluid in Different Phase States 工作流体处于不同相态时制冷旋片压缩机摩擦功率损失的研究
IF 0.8 4区 物理与天体物理
Technical Physics Letters Pub Date : 2026-06-28 DOI: 10.1134/S1063785026600110
N. A. Raikovskii, D. Kh. Sadvakasov, D. A. Gan
{"title":"Studying the Frictional Power Loss in a Refrigeration Rotary Vane Compressor with a Working Fluid in Different Phase States","authors":"N. A. Raikovskii,&nbsp;D. Kh. Sadvakasov,&nbsp;D. A. Gan","doi":"10.1134/S1063785026600110","DOIUrl":"10.1134/S1063785026600110","url":null,"abstract":"<p>The technique and results of experimental study of the antifriction characteristics of working chamber seals of promising oil-free refrigeration rotary vane compressors operating in the wet steam region are presented. The investigations have been carried out with friction in the environment of R32, R410a, and R22 refrigerants as working fluids. A significant friction coefficient drop (to 0.025‒0.05) in the wet steam environment as compared with the friction of the seals on the cylinder wall in the superheated steam environment (0.12‒0.135) has been established. It has been found that the coefficient of friction of the cylinder wall seals of oil-free refrigeration rotary vane compressors operating in the wet steam region is almost independent of the working fluid type and thickness of the liquid film on cylinder walls in the investigated range. The experimental results obtained have been used in a mathematical model for studying the energy characteristics of a refrigeration rotary vane compressor operating in the superheated and wet steam regions. The theoretical results have shown that, when a refrigeration rotary vane compressor operates in the wet steam region (by the example of an R22 refrigerant), its mechanical efficiency increases by 10% on average as compared with the operation in the superheated steam region at a rotor speed of 2000 rpm.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":"52 2","pages":"68 - 76"},"PeriodicalIF":0.8,"publicationDate":"2026-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148323932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Modeling of High-Frequency Inductive Discharge in a Plasma Torch Using OpenFOAM 等离子炬高频感应放电的OpenFOAM建模
IF 0.8 4区 物理与天体物理
Technical Physics Letters Pub Date : 2026-06-28 DOI: 10.1134/S106378502670032X
I. N. Sadykov, A. V. Gerasimov
{"title":"Modeling of High-Frequency Inductive Discharge in a Plasma Torch Using OpenFOAM","authors":"I. N. Sadykov,&nbsp;A. V. Gerasimov","doi":"10.1134/S106378502670032X","DOIUrl":"10.1134/S106378502670032X","url":null,"abstract":"<p>High-frequency induction plasma torches are widely used in technologies such as plasma spraying of materials, compaction and spheroidization of powders, chemical synthesis of nanoparticles, waste processing, melting, decoration and strengthening of surfaces, physical testing of thermal protection of space and rocket systems, etc. Mathematical modeling allows predicting integral and local plasma characteristics, making it a key tool for plasma torch optimization.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":"52 3","pages":"136 - 138"},"PeriodicalIF":0.8,"publicationDate":"2026-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148323664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Effect of Cathode Temperature on the Combustion Modes of Microdischarges at Atmospheric Pressure 阴极温度对常压下微放电燃烧方式的影响
IF 0.8 4区 物理与天体物理
Technical Physics Letters Pub Date : 2026-06-28 DOI: 10.1134/S1063785026700288
G. Kh. Tazmeev, Kh. K. Tazmeev
{"title":"The Effect of Cathode Temperature on the Combustion Modes of Microdischarges at Atmospheric Pressure","authors":"G. Kh. Tazmeev,&nbsp;Kh. K. Tazmeev","doi":"10.1134/S1063785026700288","DOIUrl":"10.1134/S1063785026700288","url":null,"abstract":"<p>The dc microdischarges in atmosphere are experimentally studied in the range of 100–700 mA. A significant effect of cathode temperature on the alternation rate between glow and arc combustion modes is revealed. Conditions for increasing the combustion duration in glow discharge mode are proposed and implemented.</p>","PeriodicalId":784,"journal":{"name":"Technical Physics Letters","volume":"52 3","pages":"149 - 151"},"PeriodicalIF":0.8,"publicationDate":"2026-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148323667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信
小红书