This master's thesis consists of 90 pages, 40 illustrations, 25 tables and 18 literary references.

In the master's dissertation was carried out research of possibilities of construction of an ultrasonic system for control of bones of a forearm. A system has been proposed that includes six linear antenna arrays, active groups of linear antenna arrays can be used as phase antenna arrays.

Possible sound schemes in the system are investigated. Two operating modes of the system are proposed, the first is the definition of the presence of a crack, the second finding the size of the displacement. The study found that the most effective is the mirror-shadow method, but it greatly complicates the algorithm of the system, and it requires initial setup. Also, in this system, radiation in two directions simultaneously at different frequencies is proposed in order to increase the reliability and speed of control in the inclined beam. The modern element is analyzed, which satisfies the requirements of the system with the help of broadband composite sensors.

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The master's dissertation consists of the introduction and 5 sections, the conclusion and the list of used literature. The full volume is 95 pages, including 32 illustrations, 28 tables, 15 literary sources and 4 appendices.

Topicality of the topic: The temperature often use as an information parameter for the diagnosis of industrial equipment, it characterizes the state of this equipment. The temperature have also particular importance during control of technological processes. The accuracy of temperature regime often determines not only the quality of the product, but also strategically important opportunities for using it for specific purposes. Among the most common devices used to measure temperature, pyrometers can be called, which allow to get the value of temperature without contact at a given point. In some cases, one point for temperature measurement is not enougt. Often, there is a need for a complete thermogram of the object. For this purpose, a device such as a thermal camera can be used to visualize the temperature distribution on the object's surface. However, compared with a pyrometer, the thermal imager is a complex and, accordingly, an expensive device that does not always justify its value.

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This master's thesis consists of 85 pages, 50 illustrations, 35 stamps and 24 literary references.

In this dissertation features of the use of orthogonal methods of measuring signal parameters during the design of eddy-current flaw detectors based on microcontrollers are considered. The author analyzes the new structure of a flaw detector, which consists of one measuring channel, and implements an orthogonal measurement method, has very low power consumption, small dimensions and corresponding cost. Experimental investigations of the proposed structure of the eddy current flaw detector on a special experimental model were carried out, where simulation of possible defects that could result both in phase change and amplitude of the measurement signal with the help of the high-precision synthesizer of signals SDG102, firm SIGLENT was carried out, which confirmed the high metrological capabilities of this structure.

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Topicality of research

Appearance of new materials, which main purpose is increment of strength and reliability of products without high material costs causes necessity of improvement of existing and development of new non-destructive testing (NDT) methods. Method TOFD is one of such methods. Signals, received in result of diffractions has low amplitude, and it requires using of special methods of signal detection and processing.

New materials, as example – composite, has specific characteristics, one of this characteristics is high attenuation of sound. Development of efficient methods of control for these materials also requires using of improved methods of detecting and processing of signals with low signal-to-noise ratio (SNR).

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The master's dissertation consists of the introduction and 5 chapters, the conclusion and the list of used literature. The full volume is 73 pages, including 41 illustrations, 22 tables and 19 literary sources.

The urgency of this topic is that the number of people in need of rehabilitation has increased significantly in recent times in connection with the ATO in eastern Ukraine. Known foreign devices for passive restoration of the ankle joint, but their main disadvantage is the high price, and in our country the goods of this profile are not produced, so of this many people who need rehab can not afford expensive equipment. Known patents for active rehabilitation of the ankle joint, but their main disadvantage is that they are not suitable for the restoration of immobilized extremities. Therefore, it is proposed to create a rehabilitation device using a servo drive as a source of motion. The main advantage should be the price, due to the use of cheaper serial components.

The purpose of this research is to develop a rehabilitation device designed for forced reproduction of plantar foot flexion/dorsiflexion and abduction/adduction. Creating a control program is the second stage of the study.

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  1. Shynderuk T. Research of correlation method for acoustic signals location
  2. Ukrainets S. Acoustic testing technology using GSM
  3. Topikha D. Ultrasonic detector with telemetry system connection
  4. Stelmakh I. Algorithms development for testing systems and mobile robots navigation for nondestructive testing

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АСНК КПІ ім. Ігоря Сікорського, 2021