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structure design and load test of the small prototype for the JUNO Central Detector

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Radiation Detection Technology and Methods 2022年第4期6卷 439-450页

作者： Xiaoyu Yang Yuekun Heng Wei He Xiaoyan Ma Lei Yang Jiajie Ling Zhi Wu Kaixi Huang Caishen Wang Ruiting Lei Yatian Pei Xiaohui Qian Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China State Key Laboratory of Particle Detection and Electronics Beijing 100049China University of Chinese Academy of Science Beijing 100049China Dongguan University of Technology Dongguan 523808China Sun Yat-Sen University Guangzhou 510275China

Introduction The structure of the Jiangmen Underground Neutrino Observatory(JUNO)CentralDetector(CD)was designed using finite element methods(FEM).The structure of the small JUNOCDprototypewas also designed using the same structural scheme and method as those of the CD,and the load test was carried out after the accomplishment of structure design and *** The load test can help verify the performance and reliability of the mechanical monitoring system and liquid filling system of the CD,verify the consistency of FEM calculations and axial force measurement results of the sensors,and accumulate experience for the installation of the connecting *** The measurement scheme was considered and determined,and the connecting bars’axial forces under different liquid filling conditions were measured and compared with the FEM results,the consistencies of which were *** mechanical monitoring system and liquid filling system of theCDwere verified during the load test,which met the requirements of design and experiment.

关键词： structure design Load test Numerical analysis Small prototype Central Detector JUNO

Progress in ceramic materials and structure design toward advanced thermal barrier coatings

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Journal of Advanced Ceramics 2022年第7期11卷 985-1068页

作者： Zhi-Yuan WEI Guo-Hui MENG Lin CHEN Guang-Rong LI Mei-Jun LIU Wei-Xu ZHANG Li-Na ZHAO Qiang ZHANG Xiao-Dong ZHANG Chun-Lei WAN Zhi-Xue QU Lin CHEN Jing FENG Ling LIU Hui DONG Ze-Bin BAO Xiao-Feng ZHAO Xiao-Feng ZHANG Lei GUO Liang WANG Bo CHENG Wei-Wei ZHANG Peng-Yun XU Guan-Jun YANG Hong-Neng CAI Hong CUI You WANG Fu-Xing YE Zhuang MA Wei PAN Min LIU Ke-Song ZHOU Chang-Jiu LI State Key Laboratory for Mechanical Behavior of Materials School of Materials Science and EngineeringXi’an Jiaotong UniversityXi’an 710049China State Key Laboratory for Strength and Vibration of Mechanical structures Department of Engineering MechanicsSchool of Aerospace EngineeringXi’an Jiaotong UniversityXi’an 710049China Xi’an Aerospace Composite Research Institute Xi’an 710025China AECC Beijing Institute of Aeronautical Materials Beijing 100095China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China State Key Laboratory of New Ceramics&Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Faculty of Materials and Manufacturing Key Laboratory of Advanced Functional MaterialsEducation Ministry of ChinaFaculty of Materials and ManufacturingBeijing University of TechnologyBeijing 100124China Faculty of Materials Science and Engineering Kunming University of Science and TechnologyKunming 650093China School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Xi’an Key Laboratory of High Performance Oil and Gas Field Materials School of Materials Science and EngineeringXi’an Shiyou UniversityXi’an 710065China Shi-Changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Shanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming Shanghai Jiao Tong UniversityShanghai 200240China National Engineering Laboratory for Modern Materials Surface Engineering Technology the Key Lab of Guangdong for Modern Surface Engineering TechnologyInstitute of New MaterialsGuangdong Academy of SciencesGuangzhou 510650China School of Materials Science and Engineering Tianjin UniversityTianjin 300072China Integrated Computational Materials Research Centre Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 201899China State Key Laboratory of Advanced Processing and Recycling of

Thermal barrier coatings(TBCs)can effectively protect the alloy substrate of hot components in aeroengines or land-based gas turbines by the thermal insulation and corrosion/erosion resistance of the ceramic top ***,the continuous pursuit of a higher operating temperature leads to degradation,delamination,and premature failure of the top *** new ceramic materials and new coating structures must be developed to meet the demand for future advanced TBC *** this paper,the latest progress of some new ceramic materials is first ***,a comprehensive spalling mechanism of the ceramic top coat is summarized to understand the dependence of lifetime on various factors such as oxidation scale growth,ceramic sintering,erosion,and calcium–magnesium–aluminium–silicate(CMAS)molten salt ***,new structural design methods for high-performance TBCs are discussed from the perspectives of lamellar,columnar,and nanostructure *** latest developments of ceramic top coat will be presented in terms of material selection,structural design,and failure mechanism,and the comprehensive guidance will be provided for the development of next-generation advanced TBCs with higher temperature resistance,better thermal insulation,and longer lifetime.

关键词： thermal barrier coatings(TBCs) ceramic material degradation and failure structure design long lifetime

structure design of Lower Limb Exoskeletons for Gait Training

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Chinese Journal of Mechanical Engineering 2015年第5期28卷 878-887页

作者： LI Jianfeng ZHANG Ziqiang TAO Chunjing JI Run College of Mechanical Engineering and Applied Electronics Technology Beijing University of Technology Robotic Institute Beihang University National Research Center for Rehabilitation Technical Aids

Due to the close physical interaction between human and machine in process of gait training, lower limb exoskeletons should be safe, comfortable and able to smoothly transfer desired driving force/moments to the patients. Correlatively, in kinematics the exoskeletons are required to be compatible with human lower limbs and thereby to avoid the uncontrollable interactional loads at the human-machine interfaces. Such requirement makes the structure design of exoskeletons very difficult because the human-machine closed chains are complicated. In addition, both the axis misalignments and the kinematic character difference between the exoskeleton and human joints should be taken into account. By analyzing the DOF（degree of freedom） of the whole human-machine closed chain, the human-machine kinematic incompatibility of lower limb exoskeletons is studied. An effective method for the structure design of lower limb exoskeletons, which are kinematically compatible with human lower limb, is proposed. Applying this method, the structure synthesis of the lower limb exoskeletons containing only one-DOF revolute and prismatic joints is investigated; the feasible basic structures of exoskeletons are developed and classified into three different categories. With the consideration of quasi-anthropopathic feature, structural simplicity and wearable comfort of lower limb exoskeletons, a joint replacement and structure comparison based approach to select the ideal structures of lower limb exoskeletons is proposed, by which three optimal exoskeleton structures are obtained. This paper indicates that the human-machine closed chain formed by the exoskeleton and human lower limb should be an even-constrained kinematic system in order to avoid the uncontrollable human-machine interactional loads. The presented method for the structure design of lower limb exoskeletons is universal and simple, and hence can be applied to other kinds of wearable exoskeletons.

关键词： gait training lower limb exoskeleton structure design kinematic compatibility even-constrained kinematic chain

structure design and Analysis of High-Voltage Power Supply for ECRH

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Plasma Science and Technology 2014年第11期16卷 1079-1082页

作者：王磊黄懿赟赵燕平张健杨磊郭文军 Institute of Plasma Physics Chinese Academy of Sciences

In order to develop a high-voltage power supply （HVPS） with high quality parame- ters, not only its electrical circuit but also its structure should be studied in detail. In this paper, the structure design of the collector power supply for gyrotron is discussed first. Then the electri- cal field and potential simulations of its inain devices are analyzed. Finally, relevant calculations and conclusions are given.

关键词： ECRH HVPS structure design distributed capacitance

structure design of Shaped Charge for Requirements of Concrete Crater Diameter

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Transactions of Nanjing University of Aeronautics and Astronautics 2015年第6期32卷 681-686页

作者：郭坚何勇肖强强黄正祥刘蓓蓓 School of Mechanical Engineering Nanjing University of Science and Technology

When shaped charge penetrats into concrete,crater diameter must meet certain *** using theories of shaped jet formation and crater diameter growth during jet penetrating concrete,we revealed the thresholds of the velocity and diameter of jet head,and therefore obtained the related structure parameters of top liner,so that shaped charge structure was *** built a?60mm copper liner and a?142mm Ti-alloy liner which followed the rules of 0.6cal and 0.7cal in-crater ***.X-ray experiment and penetration test results showed that the parameters of jet head were consistent with the results of theoretical *** in-crater diameter of?60mm shaped charge reached 36 mm,and the?142mm one reached 100 *** both met the design requirements.

关键词： shaped charge crater diameter structure design

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eScience 2023年第5期3卷 49-68页

作者： Zhengqing Ye Ying Jiang Li Li Feng Wu Renjie Chen Beijing Key Laboratory of Environmental Science and Engineering School of Material Science&EngineeringBeijing Institute of TechnologyBeijing100081China State Key Laboratory of Reliability and Intelligence of Electrical Equipment School of Material Science and EngineeringHebei University of TechnologyTianjin300401China Advanced Technology Research Institute Beijing Institute of TechnologyJinan250300China Collaborative Innovation Center of Electric Vehicles in Beijing Beijing100081China

The electrocatalytic sulfur reduction reaction(SRR)and sulfur evolution reaction(SER),two fundamental multistep conversion processes in lithium–sulfur batteries(LSBs),are root-cause solutions to overcome sluggish redox kinetics and the polysulfide shuttling ***–organic framework(MOF)electrocatalysts have emerged as good platforms for catalyzing SRR and SER,but their catalytic performance is challenged by poor electrical conductivity and limited chemical *** MOFs and their hybrids may be beneficial for stabilizing and improving the desired catalytic properties to achieve high-performance *** review provides a detailed overview of engineering principles for improving the activity,selectivity,and stability of MOFrelated electrocatalysts via composition modulation and nanostructure design as well as hybrid *** presents and discusses the various advances achieved by using in situ characterization techniques,simulations,and theoretical calculations to reveal the dynamic evolution of MOF-related electrocatalysts,enabling an in-depth understanding of the catalysis mechanism at the molecular/atomic ***,prospects and possible research directions for MOF-related sulfur electrocatalysts are proposed.

关键词： MOF-related electrocatalysts Sulfur reduction/evolution Composition modulation structure design Mechanism research Lithium-sulfur batteries

structure design,controllable synthesis,and application of metalsemiconductor heterostructure nanoparticles

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Progress in Natural Science:Materials International 2020年第1期30卷 1-12页

作者： Yuepeng Lv Sibin Duan Rongming Wang Beijing Advanced Innovation Center for Materials Genome Engineering Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface ScienceSchool of Mathematics and PhysicsUniversity of Science and Technology Beijing

Metal-semiconductor heterostructure nanoparticles(NPs) have attracted much interest and extensively been investigated due to their promising potentials in the fields of catalysis,energy conversion and *** to the synergistic effect and coupling effect between metal and semiconductor,designing and controlling the interface structure of metal-semiconductor NPs and understanding the structure-property relationship have great significance for optimizing their physicochemical *** NPs coupled with semiconductors forming several kinds of interface structures,including core-shell,yolk-shell,Janus and oligomer-like structures are summarized in this *** controllable synthesis methods to obtain metal-semiconductor heterostructure NPs with fantastic properties are presented in ***,the structure-property relationship and their applications in the fields of catalysis,energy conversion and storage are also exhibited.A brief outlook is given on the challenges and possible solutions in future development of metal-semiconductor NPs.

关键词： Metal-semiconductor Heterostructure structure design Synthesis method Application

Composition and structure design of three-layered composite phosphors for high color rendering chip-on-board light-emitting diode devices

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Journal of Advanced Ceramics 2021年第4期10卷 729-740页

作者： Xin LIU Xinglu QIAN Peng ZHENG Xiaopu CHEN Yagang FENG Yun SHI Jun ZOU Rongjun XIE Jiang LI Key Laboratory of Transparent Opto-functional Inorganic Materials Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 201899China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China School of Science Shanghai Institute of TechnologyShanghai 201418China College of Materials Xiamen UniversityXiamen 361005China Institute of New Materials&Industrial Technology Wenzhou UniversityWenzhou 325024China

A three-layered phosphor structure was designed and prepared by the spin coating of BaSi_(2)N_(2)O_(2):Eu(cyan-emitting)and(Sr,Ca)AlSiN_(3):Eu(red-emitting)phosphor films on the yellowemitting Y_(3)Al_(5)O_(12):Ce(YAG:Ce)phosphor ceramic synthesized by the solid-state reaction under vacuum *** order to achieve high color rendering lighting,the influence of the composition and structure of the three-layered phosphors on the optical,thermal,and electrical properties of the chip-on-board(COB)packaged white-light-emitting diodes(WLEDs)was studied *** WLED with the structure of“red+cyan+yellow”(R+C+Y)three-layered phosphor generated neutral white light and had a luminous efficacy of 75 lm/W,the fidelity index(R_(f))of 93,the gamut index(R_(g))of 97,and the correlated color temperature(CCT)of 3852 *** the excitation of laser diode(LD),the layer-structured phosphor yielded the white light with a luminous efficacy of 120 lm/W,color rendering index(CRI)of 90,and CCT of 5988 *** result indicates that the three-layered phosphor structure is a promising candidate to achieve high color rendering and high luminous efficacy lighting.

关键词： three-layered composite phosphor structure design high color rendering luminous efficacy

Interfacial structure design of MXene-based nanomaterials for electrochemical energy storage and conversion

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InfoMat 2020年第6期2卷 1057-1076页

作者： Jianmin Luo Edward Matios Huan Wang Xinyong Tao Weiyang Li Thayer School of Engineering Dartmouth CollegeHanoverNew Hampshire College of Materials Science and Engineering Zhejiang University of TechnologyHangzhouZhejiangChina

2D transition metal carbides,carbonitrides,and nitrides known as MXenes possess high electrical conductivity,large redox active surface area,rich surface chemistry,and tunable *** from these exceptional chemical and physical properties,the applications of MXenes for electrochemical energy storage and conversion have attracted increasing research interests around the ***,the electrochemical performances of MXenes are directly dependent on their synthesis conditions,interfacial chemistries and structural *** this review,we summarize the synthesis techniques of MXenes,as well as the recent advances in the interfacial structure design of MXene-based nanomaterials for electrochemical energy storage and conversion ***,we provide an in-depth discussion on the relationship between interfacial structure and electrochemical performance from the perspectives of energy storage and electrocatalysis ***,the challenges and insights for the future research of interfacial structure design of MXenes are outlined.

关键词： electrocatalysis electrochemical energy storage interlayer space MXene structure design