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Stressed-Deformed State of Ice Crossings at the surface reinforcement of Composite Materials

Journal of Marine Science and Application 2020年第3期19卷 430-435页

作者： Xiaolong Bai Vitaliy Zemlyak Alexey Vasilyev Victor Kozin School of Naval Architecture and Ocean Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China Department of Technical Sciences Sholom-Aleichem Priamursky State UniversityBirobidzhan 679015Russia Laboratory Number 1 Institute of Machining and Metallurgy Far Eastern Branch Russian Academy of SciencesKomsomolsk-na-Amure 681005Russia

Ice crossings have been used for several ***,due to the active development of the Arctic shelf,supplies and minerals are provided and transferred on special transports on the surface of ice ***,ice crossings across rivers are used to reduce the length of transport *** methods of increasing the load bearing capacity of ice are ice freezing from above,ice freezing from below,and ice strengthening through a wooden copepod *** experience shows that the physical and mechanical properties of ice covers are unreliable and changeable in time and strongly depend on various external ***,ice covers should be strengthened through alternative ***,predicting the bearing capacity of ice crossings and exploring methods for their strengthening are *** this study,we consider the results of experimental and numerical studies on the bearing and deformation capacity of ice beams upon destruction from pure *** pure bending,ice breaks down in the ice crossing when transports move along *** were carried out with a specified reinforcement *** results of the model experiments were compared with numerical calculations in the ANSYS software *** on ice beams reinforced with various composite materials were also *** of samples in all cases occurred as a result of the formation of extensive cracks in the ice caused by the bending moment in the middle of the beam *** on the experimental and numerical research results,the use of a surface reinforcement in ice with various materials can increase the bearing capacity from 65%to 99%for this reinforcement scheme.

关键词： Ice beam surface reinforcement Carrying capacity Numerical research Criterion of strength

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Microstructure and mechanical properties of Ti-Cu amorphous coating synthesized on pure Cu substrate by mechanical alloying method

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Rare Metals 2020年第10期39卷 1222-1228页

作者： Cheng Chen Xiao-mei Feng Yi-fu Shen School of Mechanical and Power Engineering Nanjing Tech UniversityNanjing 211800China College of Materials Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing 210016China

Mechanical alloying method was applied to fabricate coating with amorphous structure on pure Cu *** microstructure,the phase composition and the mechanical properties including microhardness and wear resistance of the coating were,respectively,characterized and *** results show that the coating is rough but *** has favorable adhesion to the *** coating is made up of an inner composite layer and an outer amorphous *** microhardness and the wear resistance of the pure Cu substrate are improved because of the bilayer *** formation mechanism of the coating was *** as-synthesized coating is considered to be effective to strengthen the surface of pure Cu substrate.

关键词： Coating Amorphous Mechanical alloying surface reinforcement

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