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Research progress on advanced rail materials for electromagnetic railgun technology

Defence Technology（防务技术） 2021年第2期17卷 429-439页

作者： Hong-bin Xie Hui-ya Yang Jian Yu Ming-yu Gao Jian-dong Shou You-tong Fang Jia-bin Liu Hong-tao Wang School of Materials Science and Engineering Zhejiang UniversityHangzhou310027China Center for X-mechanics Faculty of EngineeringZhejiang UniversityHangzhou310027China

electromagnetic railgun attracts more and more attention due to its advantage in speed,cost,and obscurity.It is found that the rail should withstand huge mechanical and thermal shocks during the launching operation.The forms of rail failure are accompanied by gouge,grooving,transition,and arc ablation,etc.The service life of the rail has become a bottleneck restricting the development of electromagnetic railgun technology.A series of researches are carried out to solve rail failure,including analysing the failure mechanism and using various advanced rail materials.This paper provides a comprehensive review of rail materials,including material composition,preparation,microstructure,and properties.We begin from a short background of the requirement of the rail material.Then a detailed investigation of rail materials is described,and the performances of those materials are introduced.Finally,further development prospect of rail material is discussed.

关键词： Strength Conductivity electromagnetic railgun Copper alloys Rai

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Overview of Circuit Topologies for Inductive Pulsed Power Supplies

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CES Transactions on Electrical Machines and Systems 2017年第3期1卷 265-272页

作者： Xinjie Yu Xukun Liu Department of Electrical Engineering Tsinghua UniversityBeijingChina State Key Laboratory of Power System BeijingChina

The pulsed power supply(PPS)is one important component in the electromagnetic launch system.The inductive PPSs have attracted researchers’attentions with the major advantages of high energy storage density(over the capacitive PPSs)as well as simple structure and easy control(over the rotating mechanical PPSs).As for the inductive PPSs,the circuit topology of the basic module will directly determine the comprehensive performance of the whole system.From the perspectives of working principles,strengths,weaknesses,and comprehensive performance,this paper presents a historical and technical review of the major circuit topologies for the inductive PPSs.

关键词： Circuit topology electromagnetic railgun inductive energy storage inductive pulsed power supply meat grinder XRAM

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