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52篇 您的检索式:作者名="Shaofan"
    题名 作者 年代 出处 被引量
1Copper-Ti_3SiC_2 composite powder prepared by electroless plating under ultrasonic environment显示文摘In this article, a new type of Cu-Ti3SiC2 composite powder prepared using the electroless plating technique was introduced. The initial Ti3SiC2 particles are 11 μm in diameter on an average. The Cu plating was carried out at middle temperature (62-65°C) with the application of ultrasonic agitation. The copper deposition rate was determined by measuring the weight gain of the powder after plating. It has been found that the pretreatment of Ti3SiC2 powder is very important to obtain copper nanoparticles on the surface of Ti3SiC2. The optimum procedure before plating aimed to add activated sites and the adjustment of the traditional composition of the electroless copper plating bath could decelerate the copper deposi- tion rate to 0.8 μm/h. X-ray diffraction (XRD) indicates that the chemical composition of the plating layer is copper. SEM images show that the surface of the Ti3SiC2 particles is successfully coated with continuous copper layer. The wetting prop- erty between the copper matrix and Ti3SiC2 can be improved so as to increase the interfacial strength.ZHANG Zhongbao XU Shaofan 2007Rare Metals2007,26,4:11
2AN INTEGRATED COUPLING ELEMENT FOR VEHICLE-RAIL-BRIDGE INTERACTION SYSTEM WITH A NON-UNIFORM CONTINUOUS BRIDGE显示文摘An integrated coupling element considering wheel-rail interface for analyzing the dynamic responses of vehicle-rail-bridge interaction system with a non-uniform continuous bridge is presented. The governing equations of the interaction system are established first, and the solution procedure and assembly method of the coupling element are demonstrated. Finally, the accuracy, efficiency and function of the integrated coupling element are tested using two numerical examples. The influences of different combinations of rail and bridge element length in the coupling element on the solution are investigated, and the effects of different rail irregularities on the dynamic responses are discussed.Hongyin Yang Zhijun Chen Shaofan Li Hailong Zhang Jianping Fan 2015Acta Mechanica Solida Sinica2015,28,3:9
3A formal approach using SysML for capturing functional requirements in avionics domain显示文摘In this work,a Model-Based Systems Engineering approach based on Sys ML is proposed.This approach is used for the capture and the definition of functional requirements in avionics domain.The motivation of this work is triple:guide the capture of functional requirements,validate these functional requirements through functional simulation,and verify efficiently the consistency of these functional requirements.The proposed approach is decomposed into several steps that are detailed to go from conceptual model of avionics domain to a formal functional model that can be simulated in its operating context.To achieve this work,a subset of Sys ML has been used as an intermediate modelling language to ensure progressive transformation that can be understood and agreed by system stakeholders.Formal concepts are introduced to ensure theoretical consistency of the approach.In addition,transformation rules are defined and the mappings between concepts of ARP4754 A civil aircraft guidelines and Sys ML are formalized through meta-model.The resulting formalization enables engineers to perform functional simulation of the top-level functional architecture extracted from operational scenarios.Finally,the approach has been tested on an industrial avionics system called the Onboard Maintenance System.Shaofan ZHU Jian TANG Jean-Marie GAUTHIER Raphael FAUDOU 2019Chinese Journal of Aeronautics2019,32,12:8
4Si/C particles on graphene sheet as stable anode for lithium-ion batteries显示文摘Silicon is considered as one of the most promising anodes for Li-ion batteries(LIBs), but it is limited for commercial applications by the critical issue of large volume expansion during the lithiation. In this work, the structure of silicon/carbon(Si/C) particles on graphene sheets(Si/C–G) was obtained to solve the issue by using the void space of Si/C particles and graphene. Si/C–G material was from Si/PDA-GO that silicon particles was coated by polydopamine(PDA) and reacted with oxide graphene(GO). The Si/C–G material have good cycling performance as the stability of the structure during the lithiation/dislithiation.The Si/C–G anode materials exhibited high reversible capacity of 1910.5 mA h g^(-1) and 1196.1 mA h g^(-1) after 700 cycles at 357.9 m A g^(-1), and have good rate property of 507.2 mA h g^(-1) at high current density,showing significantly improved commercial viability of silicon electrodes in high-energy-density LIBs.Jian Han Xiaonan Tang Shaofan Ge Ying Shi Chengzhi Zhang Feng Li Shuo Bai 2021Journal of Materials Science & Technology2021,,21:4
5Size,morphology,and composition of lunar samples returned by Chang'E-5 mission显示文摘This study focuses on the physical and chemical properties of surficial lunar regolith(LR)samples returned from the Moon by the Chang’E-5(CE-5)mission.Insights regarding the effect of a new sampling geological site on the surficial lunar sample CE5 C0400 were illustrated using nondestructive techniques such as laser diffractometry coupled with image analysis,X-ray computed tomography,and field emission scanning electron microscopy equipped with energy dispersive spectroscopy,and Xray diffraction combined with Rietveld refinement.From the characterization analyses,the CE-5 sampling site in the northeastern Oceanus Procellarum on the Moon yields a unique collection of relatively regular-shaped and fine basalt-dominated particles.The median grain size D_(50) is(55.24±0.96)μm,falling within the relatively low end of the range of the Apollo lunar returned samples.The coefficient of uniformity C_(u)of 15.1 and the coefficient of curvature C_(c)of 1.7 could classify CE5 C0400 to be well-graded.The minerals in CE5 C0400 comprise approximately 44.5%pyroxene,30.4%plagioclase,3.6%olivine,and6.0%ilmenite.There is a relatively low content of approximately 15.5%glass phase in the CE-5 lunar sample.From the results,we deduce that the CE-5 LR structure could have mainly resulted from micrometeoroid impacts to achieve such a high level of maturity.Hui Zhang Xian Zhang Guang Zhang Keqi Dong Xiangjin Deng Xiaosong Gao Yaodong Yang Yuan Xiao Xiao Bai Kaixin Liang Yiwei Liu Wenbin Ma Shaofan Zhao Ce Zhang Xiaojing Zhang Jian Song Wei Yao Hong Chen Weihua Wang Zhigang Zou Mengfei Yang 2022Science China(Physics,Mechanics & Astronomy)2022,65,2:4
6A Deep Learning-Based Computational Algorithm for Identifying Damage Load Condition: An Artificial Intelligence Inverse Problem Solution for Failure Analysis显示文摘In this work,we have developed a novel machine(deep)learning computational framework to determine and identify damage loading parameters(conditions)for structures and materials based on the permanent or residual plastic deformation distribution or damage state of the structure.We have shown that the developed machine learning algorithm can accurately and(practically)uniquely identify both prior static as well as impact loading conditions in an inverse manner,based on the residual plastic strain and plastic deformation as forensic signatures.The paper presents the detailed machine learning algorithm,data acquisition and learning processes,and validation/verification examples.This development may have significant impacts on forensic material analysis and structure failure analysis,and it provides a powerful tool for material and structure forensic diagnosis,determination,and identification of damage loading conditions in accidental failure events,such as car crashes and infrastructure or building structure collapses.Shaofei Ren Guorong Chen Tiange Li Qijun Chen Shaofan Li 2018Computer Modeling in Engineering & Sciences2018,,12:3
7Peridynamic modeling and simulation of thermo-mechanical de-icing process with modified ice failure criterion显示文摘De-icing technology has become an increasingly important subject in numerous applications in recent years.However,the direct numerical modeling and simulation the physical process of thermomechanical deicing is limited.This work is focusing on developing a numerical model and tool to direct simulate the de-icing process in the framework of the coupled thermo-mechanical peridynamics theory.Here,we adopted the fully coupled thermo-mechanical bond-based peridynamics(TM-BB-PD)method for modeling and simulation of de-icing.Within the framework of TM-BB-PD,the ice constitutive model is established by considering the influence of the temperature difference between two material points,and a modified failure criteria is proposed,which takes into account temperature effect to predict the damage of quasi-brittle ice material.Moreover,thermal boundary condition is used to simulate the thermal load in the de-icing process.By comparing with the experimental results and the previous reported finite element modeling,our numerical model shows good agreement with the previous predictions.Based on the numerical results,we find that the developed method can not only predict crack initiation and propagation in the ice,but also predict the temperature distribution and heat conduction during the de-icing process.Furthermore,the influence of the temperature for the ice crack growth pattern is discussed accordingly.In conclusion,the coupled thermal-mechanical peridynamics formulation with modified failure criterion is capable of providing a modeling tool for engineering applications of de-icing technology.Ying Song Shaofan Li Shuai Zhang 2021Defence Technology(防务技术)2021,17,1:3
8Taking advantage of glass:capturing and retaining the helium gas on the moon显示文摘Helium-3(3He)is a noble gas that has critical applications in scientific research and promising application potential as clean fusion energy.It is thought that the lunar regolith contains large amounts of helium,but it is challenging to extract because most helium atoms are reserved in defects of crystals or as solid solutions.Here,we find large amounts of helium bubbles in the glassy surface layer of ilmenite particles that were brought back by the Chang’E-5 mission.The special disordered atomic packing structure of glasses should be the critical factor for capturing the noble helium gas.The reserves in bubbles do not require heating to high temperatures to be extracted.Mechanical methods at ambient temperatures can easily break the bubbles.Our results provide insights into the mechanism of helium gathering on the moon and offer guidance on future in situ extraction.Ao Li Xiao Chen Lijian Song Guoxin Chen Wei Xu Juntao Huo Meng Gao Ming Li Lei Zhang Bingnan Yao Min Ji Yan Zhang Shaofan Zhao Wei Yao Yanhui Liu Jun-Qiang Wang Haiyang Bai Zhigang Zou Mengfei Yang Weihua Wang 2022Materials Futures2022,1,3:2
9Visible-light stimulated synaptic plasticity in amorphous indium−gallium−zinc oxide enabled by monocrystalline double perovskite for high-performance neuromorphic applications显示文摘Photoelectric synaptic devices have been considered as one of the key components in artificial neuromorphic systems due to their excellent capability to emulate the functions of visual neurons,such as light perception and image processing.Herein,we demonstrate an optically-stimulated artificial synapse with a clear photoresponse from ultraviolet to visible light,which is established on a novel heterostructure consisting of monocrystalline Cs2AgBiBr6 perovskite and indium–gallium–zinc oxide(IGZO)thin film.As compared with pure IGZO,the heterostructure significantly enhances the photoresponse and corresponding synaptic plasticity of the devices,which originate from the superior visible absorption of single-crystal Cs2AgBiBr6 and effective interfacial charge transfer from Cs2AgBiBr6 to IGZO.A variety of synaptic behaviors are realized on the fabricated thin-film transistors,including excitatory postsynaptic current,paired pulse facilitation,short-term,and long-term plasticity.Furthermore,an artificial neural network is simulated based on the photonic potentiation and electrical depression effects of synaptic devices,and an accuracy rate up to 83.8%±1.2%for pattern recognition is achieved.This finding promises a simple and efficient way to construct photoelectric synaptic devices with tunable spectrum for future neuromorphic applications.Fu Huang Feier Fang Yue Zheng Qi You Henan Li Shaofan Fang Xiangna Cong Ke Jiang Ye Wang Cheng Han Wei Chen Yumeng Shi 2023Nano Research2023,16,1:2
10Controllable one-step doping synthesis for the white-light emission of cesium copper iodide perovskites显示文摘In this paper, a controllable one-step doping method has been successfully adopted in the cesium copper iodide perovskite’s luminescence, a high-quality white-light emission with Commission Internationale de l’Eclairage(CIE) coordinates of(0.3397, 0.3325), and a color rendering index(CRI) reaching up to 90 was realized in a convenient way. Through adding impurities into the Cs_(3)Cu_(2)I_(5) system, high efficiency and stable CsCu_(2)I_(3) was synthesized, and the coexistence of varied high luminescence phases realized the white lighting.Strikingly, blue-emitting Cs_(3)Cu_(2)I_(5) and yellow-emitting CsCu_(2)I_(3) could coexist, and their respective luminescence was not interacted in the compound, which was beneficial for acquiring a single emission and highly efficient white lighting. This work carried out a deep exploration of the Cu-based metal halides, and would be favorable to the applications of lead-free perovskites.RANRAN FAN SHAOFAN FANG CHENGCHUAN LIANG ZHAOXING LIANG HAIZHE ZHONG 2021Photonics Research2021,9,5:2
11Wang, Di, Violence and Order on the Chengdu Plain: The Story of a Secret Brotherhood in Rural China显示文摘Shaofan An 2018Frontiers of History in China2018,13,2:2
12Meshfree amd Particle Methods and Their Applications显示文摘Li Shaofan Liu Wing Kam 2002Applied Mechanics Review2002,55,1:1
13A meshfree contactdetection algorithm显示文摘Li Shaofan Qian Dong Liu Wing Kam 2001Computer Methods in Applied Mechanics and Engineering2001,,190:1
14An atomic interaction -based continuum model for adhesive contact mechanics 显示文摘Roger A Sauer Shaofan Li 2007Finite Elements in Anslysis and Design2007,43,:1
15Enhancing infrared emission of mercury telluride(HgTe) quantum dots by plasmonic structures显示文摘The coupling of HgTe quantum dots to a gold nanobump plasmonic array can enhance the spontaneous infrared emission by a factor of five and reduce the influence of nonradiative decay channels.Shaofan Yuan Chen Chen Qiushi Guo Fengnian Xia 2020Light(Science & Applications)2020,9,1:1
16Microstructure, phase stability and mechanical properties of Nb–Ni–Ti–Co–Zr and Nb–Ni–Ti–Co–Zr–Hf high entropy alloys显示文摘Owning to their excellent thermal stability and high strength at elevated temperature,high entropy alloys(HEAs) possess great potential for the application in aviation and aerospace fields.In present work,two novel Nb-Ni-Ti-Co-Zr and Nb-Ni-Ti-Co-Zr-Hf HEAs were prepared by arc melting and copper mold suction-casting method.The microstructure,phase stability,mechanical properties at room temperature and elevated temperature of the two HEAs were studied.Both of the HEAs possess high yield stress at room temperature,especially for the Nb-Ni-Ti-Co-Zr(with 2331 Mpa).In addition,the Nb-Ni-Ti-Co-Zr HEA exhibited high yield stress of 564 Mpa at elevated temperature of 800 ℃ and large compressive plastic strain(more than 50%at 800 ℃).Nb-Ni-Ti-Co-Zr-Hf alloy showed new phase precipitation at 800 ℃,whereas the structure of Nb-Ni-Ti-Co-Zr was more stable,which is one of the reason why it possesses high strength at room temperature and elevated temperature.The high temperature properties of the Nb-Ni-Ti-Co-Zr HEA make it promising for high temperature application.Zhidong Han Xue Liu Shaofan Zhao Yang Shao Jinfeng Li Kefu Yao 2015Progress in Natural Science:Materials International2015,25,5:1
17Buckling of T-strut subject to compressive force on its shear center 显示文摘CHEN SHAOFAN 2007Journal of Constructional Steel Research2007,63,:1
18Selenium in soil and endemic diseases in China显示文摘Jian'an Tan Wenyu Zhu Wuyi Wang Ribang Li Shaofan Hou Dacheng Wang Linsheng Yang 2002Science of the Total Environment2002,,1:1
19Meshfree and particle methods and their applications显示文摘Shaofan Li Wing Kam Liu 2001Applied Mechanics Review2001,190,:1
20Visible light driven photodynamic anticancer activity of graphene oxide/ TiOz hybrid显示文摘Hu Zhen Huang Yudong Sun Shaofan 2012Carbon2012,50,3:1
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