Alaid M. Bearing capacity of composite steel beams reinforced with carbon fiber under cyclic loading

Object of researches - metal crane components I-beams; a purpose - is to solve scientific and technical problems of high fracture toughness of composite steel crane girders through the "conservation" cracks; methods - General Methods of theoretical and empirical study - experiment, simulation and analysis - numerical methods; - mathematical modeling methods - methods of elasticity theory and the theory of the destruction. results - to obtain experimental data on crack formation, movement and forms of experimentally obtained and theoretical results are developing methods of delivering improved fatigue strength of beams including and crane beams under cyclic loading, the results of studies allow for amplification of composite crane beams reinforced plastics in the factory during manufacture, as well as performance enhancement in a production environment without removing the bars; novelty - is to justify a new approach to slow the growth of fatigue cracks in metals using linings of high-modular materials: the first experimental studies of laboratory samples of metal with an artificial crack-coated plate of carbon fiber, the action of cyclic loading - the first time tested model of composite steel I-beams with carbon-fiber pads in the field of possible cracks in the action of cyclic loads;-designed The method of mathematical modeling to increase crack resistance runway girder in the cracks with coal-plastic lining - improved and developed a numerical model of the element with cracks under complex stress - strain state of runway girder composite section; implemented - Results of the development of test procedures of laboratory specimens with artificial cracks and plates of carbon fiber have been implemented in the laboratories of the Institute with. Paton National Academy of Sciences of Ukraine, Kiev, and testing procedures of beams reinforced with carbon fiber, the action of cyclic loads in the laboratories of the state enterprise "Scientific-Research Institute of ground mobile equipment," (GP INPOMT "), pos. NATI Odessa. On the basis of static and dynamic tests, the numerical calculation of metal beams are designed Subjects used in the training lecture courses for a degree in industrial and civil construction.