UDC 621.313.13:621.314.571.001-24 DOI: 10.34641/TM.2024.259.1.001 Yangirov I. F., Khalikov A. R., Ayupova A. R., Teregulov T. R., Fedosov E. M., Lobanov A. V. — Non-contact linear asynchronous vibration sensor
The paper considers the design of a linear asynchronous sensor for monitoring vibration parameters of ferromagnetic and electrically conductive bodies. The sensor is technologically advanced, easy to operate, and, with further conversion, can be used as an identifier of the critical vibration point of objects. Keywords: asynchronous, linear, magnetic Reynolds number, mathematical model
TECHNOLOGY AND EQUIPMENT FOR MECHANICAL AND PHYSICO-TECHNICAL PROCESSING
UDC 621.923.9 DOI: 10.34641/TM.2024.259.1.002 Asaev A. S., Averin N. V., Ivanaisky A. V., Gavrikov A. M., Linkov R. A. — Finishing treatment of turbine blade flow path surfaces with free abrasive using the vortex cavitation effect
This work is aimed at reducing the labor intensity and defects in the finishing treatment of flow path surfaces of turboprop engine blades after thermal barrier coating application. The paper investigates the implementation of the finishing treatment process using free abrasive with the application of the vortex cavitation effect on the flow path surfaces of turboprop engine blades. Keywords: finishing treatment, cavitation, turboprop engine blades, free abrasive
PHYSICAL METALLURGY AND HEAT TREATMENT
UDC 669.15.74.-194-15.669.17 DOI: 10.34641/TM.2024.259.1.003 Malinov L. S., Malinov V. L., Gavrilova V. G. — Environmentally friendly isothermal hardening — an alternative to the improvement of steels and typical isothermal hardening of high-strength cast iron
The feasibility of isothermal hardening with cooling and holding after austenitization, including partial austenitization, according to the water-furnace-air scheme without the use of environmentally unfriendly cooling media instead of the improvement of medium-carbon steels and the typical technology of isothermal hardening of high-strength cast iron is shown. Keywords: isothermal hardening, lower bainite, strain martensite, carbides, metastable austenite, mechanical properties
WELDING, RELATED PROCESSES AND TECHNOLOGIES
UDC 621.791 DOI: 10.34641/TM.2024.259.1.004 Sinitsa A. N., Tsumarev Yu. A., Latun T. S., Bobritsky S. M. — Improvement of the design of an angle-to-gusset connection based on stress state decomposition
The analysis of the design of the known angle-to-gusset connection is carried out, and the complex stress state with non-uniform distribution of service stresses characteristic of it is established. A new design is proposed that ensures full alignment of the axes of the joined elements. A comparative computer calculation using the Solid program was performed. Keywords: angle, gusset, complex stress state, bending, alignment, eccentric tension, stress state decomposition
METHODS AND INSTRUMENTS FOR CONTROL AND DIAGNOSTICS OF MATERIALS AND PRODUCTS
UDC 621.7.08 DOI: 10.34641/TM.2024.259.1.005 Matveev E. V. — Influence of structural configurations of static balancing devices on the accuracy of determining the centers of mass of products
The shortcomings of measurement schemes in which force-measuring supports are used both for measuring large unbalances and for monitoring the results of the performed balancing are identified. The advantages of schemes in which it is possible to use force-measuring supports designed for measuring small forces for measurements are shown. Keywords: center of mass, measurement of center of mass coordinates, static balancing, equilibration
DESIGN, CONSTRUCTION AND PRODUCTION OF AIRCRAFT
UDC 621.8 DOI: 10.34641/TM.2024.259.1.006 Kokoreva O. G., Antonov A. A. — Energy method for assessing the strength of aircraft parts
The problem of strength and durability of solar battery elements of aircraft is considered, taking into account the mechanism and kinetics of damage accumulation and failure of parts under complex stress state. A method is proposed that allows assessing the durability and stress-strain state of parts under non-stationary temperature conditions, as well as evaluating the plasticity and creep of the structure. Keywords: structural durability, damage accumulation, vibration loads, non-stationary temperature and force effects, shell element, aircraft, stress-strain state
UDC 629.764 DOI: 10.34641/TM.2024.259.1.007 Savtsov E. S., Torpachev A. V. — Prospects for the use of light launch vehicles for placing spacecraft into orbit
The article considers the relevance of light-class launch vehicles as the primary means of delivering cargo and satellites into Earth orbit and the current direction of development of light launch vehicles in general. The opinions of experts on this issue are studied. Statistical data for previous years and the results of the analysis of promising directions for further evolution of the space industry are presented. Keywords: light launch vehicles, development trends, world experience
PRODUCT QUALITY MANAGEMENT. STANDARDIZATION. ORGANIZATION OF PRODUCTION
UDC 621.791.763 DOI: 10.34641/TM.2024.259.1.008 Frolov A. A., Abakumov A. A., Suslin Yu. I., Aleksakhin A. V. — Influence of residual stresses in the inner radius zone R-55 on the reliability of cast side frames of freight car bogies
The causes of internal residual stresses during heat treatment of side frames of freight car bogies are studied, and the reasons for the formation of cracks and casting defects are identified. Additional heat treatment of normalized side frames is proposed to correct harmful residual tensile stresses, transforming them into useful compressive ones. Keywords: residual stresses, heat treatment, crack formation, cast side frames, new heat treatment technologies
INFORMATION
22nd International Exhibition of Welding Materials, Equipment and Technologies "Weldex-2023"
NRU "MPEI" held the fifth international conference in Izhevsk dedicated to electron beam welding and related technologies