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International Journal of smart and Nano Materials 2024年第1期15卷 1-20页

作者： Xinchun Zhang Junyu Wang Qidong Sun Jingyang Li Sheng Zhou Junfeng Qi Ran Tao Hebei Key Laboratory of Electric Machinery Health Maintenance&Failure Prevention North China Electric Power UniversityBaodingChina Institute of Advanced Structure technology Beijing Institute of TechnologyBeijingChina beijing Spacecrafts manufacturing Factory BeijingChina

Aiming at achieving tunable reentrant structures with rigidity and uniformity,respectively,the C-shaped and S-shaped reentrant metamaterials were proposed by the bionic design of animal *** beam theory and energy methodology,the analytical expressions of the equivalent elastic modulus of the metamaterials were *** in deformation modes,mechanical properties,and energy absorption capacities were characterized by using experiments and the finite element analysis *** effects of ligament angle and thickness on the mechanical characteristics of two novel metamaterials were investigated by using a parametric *** results show that the stiffness,deformation mode,stress-strain curve,and energy absorption effects of three metamaterials are significantly *** design philosophy can be extended from 2D to 3D and is applicable at multiple dimensions.

关键词： Re-entrant mechanical metamaterials negative poisson’s ratio enhanced stiffness rigid-flexible distinction energy absorption

Additive manufacturing and foundry innovation

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China Foundry 2021年第4期18卷 286-295页

作者： Yu-sheng Shi Jin-liang Zhang Shi-feng Wen Bo Song Chun-ze Yan Qing-song Wei Jia-min Wu Ya-jun Yin Jian-xin Zhou Rui Chen Wei Zhou He-ping Jia Huan-qing Yang Hai Nan State Key Laboratory of Materials Processing and Die&Mould technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China Engineering Research Center of Ceramic Materials for Additive manufacturing Ministty of EducationWuhan 430074China Shenyang Research Institute of Foundry co. Ltd.Shenyang 110011China Liaoning Senyuan Additive manufacturing technology Co.Ltd.Anshan 114000LiaoningChina Jiangsu Jiuyu Machinery co. LtdSuzhou 215300China Xi'an Space Engine company co. Ltd.Xi'an 710100China beijing Institute of Aeronautical Materials Beijing 100095China

Additive manufacturing is expected to transform and upgrade the traditional foundry industry to realize the integrated manufacturing and rapid and low-cost development of high-performance components with complex *** additive manufacturing technology commonly applied in casting mold preparation(fusible molds,sand molds/cores and ceramic cores)mainly includes selective laser sintering(SLS)and binder injection three-dimensional printing(3DP).In this work,the research status of SLS/3DP-casting processes on material preparation,equipment development,process optimization,simulation and application cases in aerospace,automotive and other fields were ***,the developing trends of the additive manufacturing technology in the future of foundry field are introduced,including multi-material sand molds(metal core included),ceramic core-shell integration and die-casting dies with conformal cooling runners.

关键词： additive manufacturing foundry selective laser sintering 3D printing multiple materials die-casting dies

development and application of magnesium alloy parts for automotive OEMs:A review

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Journal of Magnesium and Alloys 2023年第1期11卷 15-47页

作者： Bo Liu Jian Yang Xiaoyu Zhang Qin Yang Jinsheng Zhang Xiaoqing Li School of Mechanical Engineering University of Science and Technology BeijingBeijing 100083China Global R&D Center Chongqing Changan Automobile Co.LtdChongqing 401120China

China is currently vigorously implementing the“energy conservation and emission reduction”and“dual carbon”*** the most resource-advantaged light metal material in China,Magnesium(Mg)alloy is progressively expanding its application in automobile,rail transportation,aerospace,medical,and electronic *** University,Shanghai Jiaotong University,and Australian National University have conducted extensive research on the preparation,properties,and processes of Mg *** the past 20 years,the proportion of Mg alloy in the automotive industry has gradually expanded,whereas currently the design and development of Mg alloy parts for automobiles has rarely been ***,the application models and typical parts cases of Mg alloy are summarized mainly from the four systems of the whole vehicle(body system,chassis system,powertrain system,interior,and exterior system).Subsequently,two actual original equipment manufacturers(OEM)cases are used to introduce the development logic of reliable die-cast Mg alloy,including forward design,formability analysis,process design analysis,structural redesign,manufacturing,and testing,aiming to share the methods,processes,and focus of attention of automotive OEMs for developing Mg alloy parts to enhance the confidence and motivation of applying Mg alloy in automotive ***,the multiple challenges faced by Mg alloy materials are sorted out and how to face these challenges are *** policies and regulations,environmental protection and energy saving,and consumer demand will continue to promote the application of Mg.

关键词： Magnesium alloy Original equipment manufacturer Automotive application development process

Data-driven engineering framework with AI algorithm of Ginkgo Folium tablets manufacturing

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Acta Pharmaceutica Sinica B 2023年第5期13卷 2188-2201页

作者： Lijuan Ma Jing Zhang Ling Lin Tuanjie Wang Chaofu Ma Xiaomeng Wang Mingshuang Li Yanjiang Qiao Yongxiang Wang Guimin Zhang Zhisheng Wu beijing University of Chinese Medicine Engineering Research Center for Pharmaceutics of Chinese Materia Medica and New Drug DevelopmentMinistry of EducationBeijing 100029China Jiangsu Kanion Pharmaceutical co. Ltd.State Key Laboratory of New Technology in Pharmaceutical Process of Traditional Chinese MedicineLianyungang 222001China Yangtze River Pharmaceutical(Group)co. Ltd.State Pharmaceutical Engineering Technology Research Center of Traditional Chinese MedicineTaizhou 225321China Lunan Pharmaceutical Group co. Ltd.State Key Laboratory of Generic Technology of Traditional Chinese MedicineLinyi 276005China

smart manufacturing still remains critical challenges for pharmaceutical ***,an original data-driven engineering framework was proposed to tackle the ***,from sporadic indicators to five kinds of systematic quality characteristics,nearly 2,000,000 real-world data points were successively characterized from Ginkgo Folium tablet ***,from simplex to the multivariate system,the digital process capability diagnosis strategy was proposed by multivariate C_(pk)integrated *** C_(pk)of Ginkgo Folium extracts,granules,and tablets were discovered,which was 0.59,0.42,and 0.78,respectively,indicating a relatively weak process capability,especially in ***,the quality traceability was discovered from unit to end-to-end analysis,which decreased from 2.17 to *** further proved that attention should be paid to granulating to improve the quality *** conclusion,this paper provided a data-driven engineering strategy empowering industrial innovation to face the challenge of smart pharmaceutical manufacturing.

关键词： smart manufacturing Data-driven engineering Artificial intelligence Information fusion Process capability index End-to-end Quality traceability Real-world Ginkgo Folium products

Multifunctional Integrated Organic-Inorganic-Metal Hybrid Aerogel for Excellent Thermal Insulation and Electromagnetic Shielding Performance

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Nano-Micro Letters 2024年第10期16卷 163-175页

作者： Zhaoqi Niu Fengjin Qu Fang Chen Xiaoyan Ma Beixi Chen Luyao Wang Miao Xu Shumeng Wang Liang Jin Chengshuang Zhang Xiao Hou Ministry of Industry and Information technology Key Laboratory of Special Function and smart Polymer Materials Key Laboratory of Materials Physics and Chemistry of Ministry of Education for Extraordinary ConditionsNorthwestern Polytechnical UniversityXi'an 710072People's Republic of China Spallation Neutron Source Science Center Institution Dongguan 523803People's Republic of China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049People's Republic of China China aerospace Science and Industry corporation Sixth Academy Hohhot 022185People's Republic of China Xi'an aerospace composites Research Institute Xi'an 710025People's Republic of China China aerospace Science and technology corporation Beijing 100037People's Republic of China

Vehicles operating in space need to withstand extreme thermal and electromagnetic environments in light of the burgeoning of space science and *** is imperatively desired to high insulation materials with lightweight and extensive mechanical ***,a boron-silica-tantalum ternary hybrid phenolic aerogel(BSiTa-PA)with exceptional thermal stability,extensive mechanical strength,low thermal conductivity(49.6 mW m^(-1)K^(-1)),and heightened ablative resistance is prepared by an expeditious *** extremely thermal erosion,the obtained carbon aerogel demonstrates noteworthy electromagnetic interference(EMI)shielding performance with an efficiency of 31.6 dB,accompanied by notable loading property with specific modulus of 272.8 kN·m kg^(-1).This novel design concept has laid the foundation for the development of insulation materials in more complex extreme environments.

关键词： Multi-hybrid aerogel Metal-phenolic coordination Thermal insulation EMI shielding convertibility and multifunctionality

A security scheme for intelligent substation communications considering real-time performance

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Journal of Modern Power Systems and Clean Energy 2019年第4期7卷 948-961页

作者： Jie ZHANG Jun’e LI Xiong CHEN Ming NI Ting WANG Jianbo LUO Key Laboratory of aerospace Information Security and Trusted computing Ministry of EducationSchool of Cyber Science and EngineeringWuhan UniversityWuhan 430072China NARI Group corporation(State Grid Electric Power Research Institute) Nanjing 211106China NARI technology co.ltd. Nanjing 211106China State Key Laboratory of smart Grid Protection and control Nanjing 211106China

Tampering,forgery and theft of the measurement and control messages in a smart grid could cause one breakdown in the power ***,no security measures are employed for communications in intelligent *** services in an intelligent substation have high demands for real-time performance,which must be considered when deploying security *** paper studies the security requirements of communication services in intelligent substations,analyzes the security capabilities and shortages of IEC 62351,and proposes a novel security scheme for intelligent substation *** security scheme covers internal and telecontrol communications,in which the real-time performance of each security measure is *** this scheme,certificateless public key cryptography(CLPKC)is used to avoid the latency of certificate exchange in certificate-based cryptosystem and the problem of key escrow in identity-based cryptosystem;the security measures of generic object-oriented substation event,sampled measure value and manufacturing message specification in IEC 62351 are improved to meet the real-time requirements of the messages as well as to provide new security features to resist repudiation and replay attacks;and the security at transport layer is modified to fit CLPKC,which implements mutual authentication by exchanging ***,a deployment of CLPKC in an intelligent substation is *** also evaluate the security properties of the scheme and analyze the end-to-end delays of secured services by combining theoretical calculation and simulation in this *** results indicate that the proposed scheme meets the requirements of security and real-time performance of communications in intelligent substations.

关键词： Intelligent substation Security measures Certificateless public key cryptography(CLPKC) Real-time communication IEC 62351

Non-invasive estimation of the powder size distribution from a single speckle image

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Light(Science & Applications) 2024年第10期13卷 2221-2230页

作者： Qihang Zhang Ajinkya Pandit Zhiguang Liu Zhen Guo Shashank Muddu Yi Wei Deborah Pereg Neda Nazemifard Charles Papageorgiou Yihui Yang Wenlong Tang Richard D.Braatz Allan S.Myerson George Barbastathis Department of Electrical Engineering and computer Science Massachusetts Institute of TechnologyCambridgeMA 02139USA Singapore-MIT Alliance for Research and technology(smart)Centre Singapore 117543Singapore Department of Chemical Engineering Massachusetts Institute of TechnologyCambridgeMA 02139USA Department of Mechanical Engineering Massachusetts Institute of TechnologyCambridgeMA 02139USA Process Chemistry development Takeda Pharmaceuticals International Co40 Landsdowne StCambridgeMA 02139USA ShinrAI Center for AI/ML Data Sciences InstitutesTakeda Pharmaceuticals International Co650 E Kendall StCambridgeMA 02142USA Present address:Department of Precision Instruments Tsinghua UniversityBeijing 100084China

Non-invasive characterization of powders may take one of two approaches:imaging and counting individual particles;or relying on scattered light to estimate the particle size distribution(PSD)of the *** former approach runs into practical difficulties,as the system must conform to the working distance and other restrictions of the imaging *** latter approach requires an inverse map from the speckle autocorrelation to the particle *** principle relies on the pupil function determining the basic sidelobe shape,whereas the particle size spread modulates the sidelobe *** recently showed that it is feasible to invert the speckle autocorrelation and obtain the PSD using a neural network,trained efficiently through a physics-informed semi-generative *** this work,we eliminate one of the most time-consuming steps of our previous method by engineering the pupil *** judiciously blocking portions of the pupil,we sacrifice some photons but in return we achieve much enhanced sidelobes and,hence,higher sensitivity to the change of the size *** result is a 60×reduction in total acquisition and processing time,or 0.25 seconds per frame in our *** real-time operation in our system is not only more appealing toward rapid industrial adoption,it also paves the way for quantitative characterization of complex spatial or temporal dynamics in drying,blending,and other chemical and pharmaceutical manufacturing processes.

关键词： speckle size distribution

Fabrication of Bi-Bi3O4Cl plasmon photocatalysts for removal of aqueous emerging contaminants under visible light

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Journal of Environmental Sciences 2022年第8期34卷 87-100页

作者： Zeqing Long Hui Song Guangming Zhang Jingsi Gao Jia Zhu School of Energy&Environmental Engineering Hebei University of TechnologyXiping roadBeichen districtTianjin 300130China School of Environment&Natural Resources Renmin University of ChinaBeijing 100872China School of construction and Environment Engineering Shenzhen PolytechnicShenzhen 518055China Shanxi aerospace Qinghua Equipment co. Ltd.Changzhi 046012China

Photocatalytic oxidation of emerging contaminants(ECs) in water has recently gained extensive attentions. In this study, bismuth oxychloride-based plasmon photocatalysts(BiBiOCl) exhibiting high performance were successfully developed by reducing Bion the surface of BiOCl. consequently, the photocatalysts were used to remove ECs from *** effects of developmental process and Bi metal plasmon resonance on the photoelectric performances of Bi-BiOCl were investigated through a series of characterizations. The UV-vis diffuse reflection and photoluminescence spectra revealed that the light absorption range of the photocatalyst gradually increased and the electron recombination rate gradually decreased with the introduction of Bi metals. The optimal removal rates of ciprofloxacin and tetrabromobisphenol A by Bi-BiOCl were 93.8% and 96.4%;the respective reaction rate constants were 5.48 and 4.93 times higher than that of BiOCl. The mechanism study indicated that main reactants in the photocatalytic system were ·O-2radicals and photogenerated holes, and the existence of oxygen vacancies and Bi metals promoted electron transfer in photocatalyst. In conclusion, this research produces a novel, green, highly efficient, and stable visible light photocatalyst for the removal of ECs from water.

关键词： Plasmon photocatalysts Environmental purification Bi3O4Cl Emerging contaminants Hazardous substance

Accuracy evaluation for in-situ machining reference points binocular measurement based on credibility probability

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Chinese Journal of Aeronautics 2024年第1期37卷 472-486页

作者： Binchao YU Wei LIU Yanze ZHANG Dazhi MA Zhenyuan JIA Yi YUE Jiabo ZHANG Key Laboratory for Precision and Non-Traditional Machining technology of the Ministry of Education Dalian University of TechnologyDalian 116024China beijing Spacecrafts China Academy of Space TechnologyBeijing 100081China

Passive binocular measurement systems are being increasingly utilized in the in-situ industries of automobiles,aviation,and aerospace,*** to their excellent qualities of accuracy,efficiency,and cost *** the barrier of evaluating the accuracy of measured objects resulted from the unequal equivalent focal length and quantization of pixels,has limited their further development and application of high requirements for in-situ machining,e.g.,the measurement of machining reference points for the positioning of robotic drilling in aerospace *** this paper,an accuracy evaluation method is proposed to address the ***,the unequal equivalent focal length is considered to improve the accuracy of 3D ***,the credibility probability model is developed to calculate the probability of the observed error in the public view of the binocular measurement system and indicates the direction of ***,the in-situ experiment is carried out to validate the method within the effective public view range of 300 mm×300 *** experiment results show that the RMSs of observed errors are superior to 0.035 mm,and the credibility probabilities are all higher than 0.91;the maximum 3D reconstruction accuracy improvement is 60.3%,with the error reduced from 0.078 mm to 0.031 mm.

关键词： aerospace manufacturing Binocular vision Credibility probability Pixel quantization Unequal equivalent focal length

Performance releaser with smart anchor learning for arbitrary‐oriented object detection

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CAAI Transactions on Intelligence technology 2023年第4期8卷 1213-1225页

作者： Tianwei W.Zhang Xiaoyu Y.Dong Xu Sun Lianru R.Gao Ying Qu Bing Zhang Ke Zheng Key Laboratory of computational Optical Imaging technology Aerospace Information Research InstituteChinese Academy of SciencesBeijingChina University of Chinese Academy of Sciences BeijingChina Department of complexity Science and Engineering The University of TokyoTokyoJapan University of Tennessee KnoxvilleTennesseeUSA Key Laboratry of Digital Earth Science Aerospace Information Research InstituteChinese Academy of SciencesBeijingChina college of Geography and Environment Liaocheng UniversityLiaochengChina

Arbitrary‐oriented object detection is widely used in aerial image applications because of its efficient object ***,the use of oriented bounding box aggravates the imbalance between positive and negative samples when using one‐stage object detectors,which seriously decreases the detection *** believe that it is the anchor learning strategy(ALS)used by such detectors that needs to take the *** this study,three perspectives on ALS design were summarised and ALS—Performance Releaser with smart Anchor Learning(PRSAL)was *** Releaser with smart Anchor Learning is a dynamic ALS that utilises anchor classification ability as an equivalent indicator to anchor box regression ability,this allows anchors with high detection potential to be filtered out in a more reasonable *** the same time,PRSAL focuses more on anchor potential and it is able to automatically select a number of positive samples that far exceed that of other methods by activating anchors that previously had a low spatial overlap,thereby releasing the detection *** validate the PRSAL using three remote sensing datasets—HRSC2016,DOTA and UCAS‐AOD as well as one scene text dataset—ICDAR *** experimental results show that the proposed method gives substantially better results than existing models.

关键词： anchor learning strategy deep learning object detection remote sensing