DOI: 10.52150/2522-9117-2026-40-008
L. M. Deyneko1, Professor, D. Sc. (Tech.), ORCID 0000-0002-1177-3055
V. L. Pinchuk2,*, ORCID 0000-0001-8257-9252
A. O. Taranenko3, ОRCID 0000-0001-6370-4492
1 Ukrainian State University of Science and Technology
2 Nikopol Professional College, Ukrainian State University of Science and Technology
3 State Enterprise “Research and Design and Technological Institute of Pipe Industry named after Ya. Yu. Osady”
* Corresponding author: v.l.pinchuk@nmt.org.ua
MAIN FACTORS THAT AFFECT THE OPERATIONAL STABILITY
OF THE METAL OF BULLETIN VEST PLATE
Abstract. In the conditions of a full-scale war that continues in Ukraine, the issue of protecting the life and health of citizens has acquired special importance. Military personnel, law enforcement officers, medics, volunteers and citizens working in open spaces risk their lives every day, performing tasks both in the combat zone and practically throughout the country. In these circumstances, reliable personal protective equipment, in particular personal safety equipment (PPE) – bulletproof vests, are vitally necessary to save lives and minimize the risks of injuries and wounds not only from bullets, but to a greater extent from fragments. A bulletproof vest is the most important element of equipment for protecting a person from various critical and fatal injuries. Among various threats, bullet impact is one of the most common threats. Ballistic impact is a very complex mechanical process during which a bullet with a very low mass and high velocity is pushed by powder gases and hits the target. The absorption of energy before the bullet reaches the target and its distribution among ballistic materials are very important aspects for understanding the principle and effect of energy transfer from a bullet or projectile [1]. The aim of the article is to study the influence of the chemical composition of steels, methods of obtaining sheet metal and modes of thermal (for a homogeneous state) and chemical-thermal treatments (for obtaining a heterogeneous state) on the properties of steels selected for research and to select rational steel compositions for the manufacture of protective sheets of body armor and to develop modern treatment modes to ensure 4-5 protection classes according to DSTU 8782:2018, which is one of the key ones in Ukraine in this area [2,8].
Key words: body armor, steel, heat treatment, hardening, tempering, carbonitriding, structure, hardness, penetration.
For citation: Deyneko, L. M., Pinchuk, V. L., & Taranenko, A. O. (2026). Main factors that affect the operational stability of the metal of bulletin vest plate. Fundamental and applied problems of ferrous metallurgy, 40, 122-155. https://doi.org/10.52150/2522-9117-2026-40-008
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Рукопис надійшов до редакції / Received 05.03.2026
Рекомендовано до друку / Accepted 28.05.2026
Опубліковано / Published 30.05.2026
