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Information × Registration Number 0221U104272, 0119U100353 , R & D reports Title Development of the new compound composite porous materials with volume changeable thermal properties of military-civil use popup.stage_title Head Klymenko Leonid P., Доктор технічних наук Registration Date 11-03-2021 Organization Petro Mohyla Black Sea National University popup.description2 The aim of research is to develop new combined komposite porous materials with volume-changed termophysical properties for civil-military use and creation of innovational technologies for materials production. First part of research based on military history and, first of all – armor and shield evolution. Mathematical models for arrow and lead ball hitting mechanism included the terminal ballistics equation for arrow and sling, and reserve action in detail. Personal body armor is the result of multi-layer, lamellar and laminar armor evolution in our history classification. Basic problems in general include thermoregulation and weight properties. Thermoregulation factor appears through body temperature increasing by 10 0C per hour of wearing a bulletproof with 30% body area covering. Weigt (m) can affect wearing time (T) according the exponential equation T=4,03e^(-0,17m). Also bulletproof weight is tactical, because anti-fragmentation proof with m<25kg allows to dash 400 meters in 3 minutes, but bulletproof with m≈30kg slows down the dash to 6 minutes. Every 3 minutes in attack cause 10% losses, but in modern battles statistic heavy bulletproof can protect only 15%, so light armor can stop 5-10% of damage and we have 9-10% shots versus 18% with heavy armor. So in future research we need to develop light termoregulation system and the way of reduce armor plates weight. Second part include ballistics equation for artillery gun. It is only external ballistics of the projectile, so we need to learn external ballistics for projectile fragmentation. The third part of the research include one of ways for reduce armor plates weight – corpuscular and sponge porous materials (based on titanium). Model of sponge porosity for sponge titanium in Kroll reaction based on Arrenius law and include description of the process of bubble conglomeration growth in solution. Model of corpuscular porosity for powder metallurgy include HCP and FCC packing and elastic interaction of sphere Product Description popup.authors Andreev Vyacheslav I Dychta Leonid M Mysienko Maksym P Pryschepov Oleg F Sluchak Oleksandr I Sluchak Olena I popup.nrat_date 2021-03-17 Close