Спеціальні засоби та методики

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    (2019) Власов, В.А.; Vlasov, V.A.; Іванілова, Н.А.; Ivanilova, N.A.
    Research article highlights the methods of testing the protective properties of the developed national standards DSTU 8782: 2018 “Personal protective equipment. Bulletproof vests. Classification. General specifications”, DSTU 8788: 2018 “Personal protective equipment. Bulletproof vests. Methods of control of protective properties” and DSTU 8835: 2019 “Personal protective equipment. Bulletproof helmets. Classification. General technical conditions” defining climatic conditions and ballistic test regimes to assess the quality of personal protective equipment from the point of view of monitoring its protective properties. The article considers the peculiarities of testing the protective properties of such personal protective equipment as bulletproof vests and bulletproof helmets in accordance with their design features of climatic conditions of the test, requirements for personnel, testing equipment. In the article the authors give the classification of bulletproof vests and helmets adopted in Ukraine according to the stability of this personal protective equipment to the action of firearms bullets, as well as special classes of bulletproof vests on their resistance to cold weapons and fragments of shells, mines or hand grenades. The means of destruction are characterized: calibers of cartridges, weight and construction of balls. The article concentrates all stages of the test from the identification of samples of personal protective equipment provided for testing, to the features of the location of equipment during the tests of both bulletproof vests and helmets, the algorithm of testing, processing and fixing the results. Requirements are provided to demonstrate that the personal protective equipment complies with the declared class. The authors conclude that ballistic tests in accordance with the requirements of the established national standards will create prerequisites for improving the safety and quality of personal protective equipment, such as bulletproof vests and bulletproof helmets, as well as create prerequisites for increasing the level of protection of consumers’ interests of the above-mentioned products, improving the technical and economic performance of production of bulletproof vests and helmets in Ukraine.
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    Технічні характеристики та конструктивні особливості кайданків одноразового використання. TECHNICAL CHARACTERISTICS AND DESIGN FEATURES OF DISPOSABLE HANDCUFFS
    (2019) Березненко, Н. М.; Bereznenko, N.M.; Неня, О.В.; Nenia, O.V.; Кучинський, Ю.Д.; Kuchynskyi, Yu.D.
    A comparative analysis of disposable handcuffs in service with law enforcement agencies around the world has been conducted. The technical characteristics of disposable handcuffs are analyzed and the criteria by which they can be classified are proposed, namely, the number of created loops, the material of manufacture, and the way of wearing them. The article deals with historical aspects of handcuffs. The analysis of technical characteristics and design features of handcuffs of disposable use of foreign production is carried out, taking into account which criteria of classification of disposable handcuffs are offered. The key criteria by which they can be evaluated are defined: the number of created cycles – single cycles, double cycles; manufacturing material – textiles, plastic, metal; method of transportation – compactly folded into a case, not composed and not adapted to the elements of clothing or equipment. The main advantages and disadvantages of metal and disposable plastic and textile handcuffs are highlighted. Considerable attention is paid to the choice of material for the manufacture of plastic handcuffs for disposable use, for which different types of polymeric composite materials on their physical and mechanical properties are analyzed. According to the results of this analysis, it was concluded that the properties of composite materials are mainly determined by the technological and operational characteristics of polymeric matrices. Attention is focused on the advanced positions of polyethylene among other polymeric materials due to the successful combination of physical and mechanical properties, ease of processing and relatively low cost. Besides, this polymeric material is processed by all known methods of processing. Depending on the polymerization method, the properties of polyethylene vary considerably, and therefore polyethylene is of different types: high pressure and low density polyethylene, low pressure and high density polyethylene, medium pressure polyethylene, linear polyethylene. Based on the results of the study, it was suggested that disposable plastic handcuffs should be used by law enforcement officials to restrict the mobility of detained offenders under current legislation. The technical characteristics of the most functional, according to the authors, disposable plastic handcuffs are also proposed.