No. 9

Abstracts. No. 9, 2022 year
 
ABSTRACTS
Fedorov A.V., Kotovshchikov I.O. (e-mail: kotovshchikov.ilya@mail.ru)
Experimental approbation of the equipment and method for helicopter blades made of composite materials active thermal testing

The paper presents the results of experimental approbation of an automated system and a method for non-destructive testing of helicopter blades made of composite materials. These developed testing equipment and method realize the method of active thermal control and are designed to detect internal defects such as non-gluing, delamination and peeling of the skin in composite helicopter blades based on fiberglass reinforced plastic (GFRP) and carbon fiber reinforced plastic (CFRP). Based on the experimental results, the testing reliability of developed system and method was estimated: 0.86 for GFRP and 0.83 for CFRP blades. Also, testing reliability of currently using tools and methods which implement the acoustic method of free oscillations and the visual-optical method were obtained: 0.78 for GFRP and 0.03 for CFRP blades. Based on the results of experimental approbation, it was concluded that the use of the developed equipment and method of active thermal testing will increase the reliability of the helicopter blades made of composite materials testing in comparison with the non-destructive testing tools and methods used today.

Keywords: experimental approbation, non-destructive testing, composite materials, helicopter blades, active thermal testing, active thermography, automated system, NDT method, increasing the testing reliability.

Bocharov N.A., Kirilyuk M.A., Gladyshev A.I., Paramonov N.B. (e-mail: bocharov.na@phystech.edu)
Modeling quantum machine learning algorithms on the trusted Elbrus platform

In this paper a number of quantum algorithms used in the field of machine learning that can provide speedup compared to their classical counterparts are simulated. The presented algorithms can be used to speed up the solution of such problems as automatic image processing, big data analysis and decision making. The simulation of the operation of quantum algorithms was carried out on the trusted hardware and software platform Elbrus.

Keywords: quantum computing, artificial intelligence, quantum algorithms, quantum computers, platform Elbrus.

Bilyaletdinov I.E. (e-mail: bili@mcst.ru)
Method testing of noise immunity of the RAM communication channel with Elbrus architecture processors

The article describes a method for testing the communication channel of RAM and processor. Description of the data patterns for generating interference inside data transmission lines is provided. A method for creating continuous accesses to the memory module is described, taking into account the capabilities of processors with the Elbrus architecture version 5 and higher. Various ways of providing exclusive access to processor computing resources are given, the most suitable Linux kernel module that disables the scheduler in processor cores is selected. The results of testing various printed circuit boards for the size of the memory channel operability area when using SPEC tests and the developed kernel module are presented. For a printed circuit board with known problems, the resulting performance area turned out to be 47 % less when using the Linux core module than when using SPEC. For printed circuit boards without errors, the results were the same within the measurement error.

Keywords: DDR, memory operability area, Linux kernel module, Elbrus.

Ryazanov I.V., Balabanov P.V., Egorov A.S. (e-mail: senior.ryazanov2012@yandex.ru)
Thermal control system of protective properties for plates of alkali metal superoxides chemosorbent

The paper considers a thermal method for monitoring the resource of the protective properties of chemosorbent plates based on alkali metal superoxides, in particular potassium, used as part of respiratory protection products to purify the air from carbon dioxide impurities and enrich it with oxygen. The method involves measuring the surface temperature of the chemosorbent plate, the change of which is due to the exothermic reaction of absorption of CO2 and water vapor from the purified air, and a flat heating element whose electrical power is regulated so that its temperature is equal to the temperature of the plate. The resource of the protective properties of the chemisorbent plate is determined by the measured heater power proportional to the rate of CO2 chemisorption. To implement the method, the technical and software-algorithmic support of the system of automated control of the resource of the protective properties of the chemosorbent is proposed. The results of testing the operation of the system under conditions of relative humidity of the purified air from 60 % to 95 % and CO2 concentrations from 1 % to 4 % are presented.

Keywords: thermal method, chemosorbent, potassium peroxide, resource of protective properties, specific power.

Molchanov V.V., Fedoseev V.N., Shanin Yu.I., Sharapov I.S. (e-mail: ShaniYuI@sialuch.ru)
Design of a double-axis scanning head for selective laser melting

Dual axis scanning heads are widely used in the world for engraving and marking on various materials. The technology of selective laser sintering/melting is fundamental for the additive manufacturing of products from metal powders, requiring, at a high local concentration of laser energy, precise and fast control of the position of the focused laser spot. The design requirements for sintering/melting scanning devices are different from those for laser marking devices. The paper considers the issues of designing the main components of a two-axis scanning head (scanator) designed for selective laser melting. The design of both optical elements (collimator, scanning mirrors, F-theta lens) and electromechanical and electronic devices (galvo, angular position sensor, control system controller) is considered.

Keywords: scanning system, scanner, scanning head, collimator, scanning mirror, galvo, F-theta lens, fiber laser, selective laser melting.

Kondratenko E.V., Brylova T.B. (e-mail: kondratenkoev@list.ru)
Improvement of the technology for monitoring the wheelset axis by ultrasonic method based on flaw detectors with antenna arrays

The analysis of the technological process of wheelset repair in conditions of wagon repair depots carried out in the article allowed us to form a logical scheme for conducting non-destructive testing and identify the main stages of decision-making about the integrity of the object under study. This contributed to the development of a system for optimizing technological operations of non-destructive testing and reducing the time for inspection of one unit of production.

The authors consider the use of modern means of ultrasonic non-destructive testing with the implementation of focused synthesized aperture (SAFT) algorithms used in devices with antenna arrays, which allows you to visualize the process of propagation of ultrasonic waves in the studied material of the object and determine the spatial location of defects. This approach is achieved by step-by-step determination of the coordinates of the reflectors by each individual element of the antenna array of the converter and the construction of an S-scan scan by the flaw detector.

The control zones of the wheelset axles obtained during the study can be adjusted with further research and development of the monitoring methodology by converters operating on phased antenna arrays.

Keywords: ultrasonic testing, non-destructive testing of wheelsets, phased antenna arrays, SAFT method, wheelset axis.

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