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Information × Registration Number 0221U104266, 0118U003871 , R & D reports Title Scientific basis for the design of structures and structures of lightweight composite buoyancy materials for underwater means of ocean resources development popup.stage_title Head Korostylov Leontii I, Доктор технічних наук Registration Date 10-03-2021 Organization Admiral Makarov National University of Shipbuilding popup.description2  The object of research - the processes of accumulation of damage and destruction of composite buoyancy materials for underwater equipment under the action of long-term and cyclic loads with hydrostatic pressure at operating temperatures - 50… + 160ºC, which ensures reliable operation of underwater equipment. Investigation of the characteristics changes in buoyancy materials during operation. The aim of the work is to develop mathematical models for the accumulation of damage in composite buoyancy materials of the underwater equipment under the influence of a set of operational factors and freezing of water accumulated in the structure of the material when exposed to negative temperatures in the air. Formulation of requirements for the components of a composite material, determination of its optimal composition and structure, ensuring a guaranteed service life at a given operating depth, duration of hydrostatic and temperature loads associated with freezing of water in the structure of water material. Development of a non-toxic anti-fouling coating composition and determination of its functional properties. Research methods - information retrieval, experimental and analytical research, mathematical statistics. Equipment: hydrostatic high pressure stand, manometers, thermoelectric transducers, thermometers, climate chamber, acoustic emission device, laboratory scales, magnetic thickness gauge, caliper. Theoretical and practical results: buoyancy materials for various operating conditions with immersion depth from 500 to 2500 m and temperature from negative to + 160°C are developed. The service life of buoyancy composite materials was significantly increased by compiling their optimal compositions and structures on the basis of the developed adequate mathematical models of damageability and a forecast of their service life was made. This significantly reduced the cost of the material: the cost of foam glass in a composition with ceramic macrosphere with a diameter of Product Description popup.authors Bourdun Yuvgene T Geyko Serhiy P Dragan Stanislav V Kazymyrenko Yuliya O Kopiika Sergii V Kochanov Vladimir Yu Lytvynenko Dmytro Yu. Prystash Svitlana F Solomonuk Natalya S Yuresko Tetyana A popup.nrat_date 2021-03-17 Close