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High-precision numerical modeling of the pro jectile launch and failure mechanism analysis of pro jectile-borne components

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Applied Mathematics and Mechanics(English Edition) 2025年第5期46卷 885-906页

作者： Xindan GUO Qiming LIU Xu HAN Tao LI Bin’an JIANG Canwei CAI State Key Laboratory of Advanced Design and Manufacturing Technology for Vehicle College of Mechanical and Vehicle EngineeringHunan UniversityChangsha 410082China State Key Laboratory of Reliability and Intelligence of Electrical Equipment School of Mechanical EngineeringHebei University of TechnologyTianjin 300401China Artillery Ammunition Technology Laboratory PLA Army Academy of Artillery and Air DefenseHefei 230031China

As core components of precision-guided projectiles,projectile-borne components are highly susceptible to failure or even damage in complex high-overload environments,thereby significantly compromising launch reliability and ***,accurately characterizing the mechanical behavior of propellants remains challenging due to the limitations in the current internal ballistic theory and the constraints of large-scale artillery firing *** complicates the high-precision numerical modeling of projectile launch,and obstructs investigations into the failure mechanisms of projectile-borne ***,this paper identifies propellant parameters using the computational inverse method under uncertainty,further establishes high-precision numerical models of projectile launch,and explores the failure mechanisms of projectile-borne components in complex high-overload ***,a projectile launching experiment is meticulously designed and executed to obtain the breech pressure and muzzle ***,a general simulation model is built,and the powder burn model is used to simulate the ignition and ***,the propellant parameters are effectively identified with the computational inverse method by the combination of the experiments and simulations.A high-precision numerical model of projectile launch is modified with the parameters validated by another experiment,and the high-overload characteristics during projectile launch are thoroughly analyzed based on this ***,the high-overload characteristics of projectile-borne components are analyzed to elucidate the stress variation laws and to reveal the failure mechanisms influenced by time and spatial *** research provides an effective method for perfectly identifying propellant parameters and building high-precision numerical models of projectile ***,it provides significant guidance for the anti-high overload design and analysis of projectile-bo

关键词： projectile-borne component high-overload environment propellant parameter identification computational inverse technique failure mechanism

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Experimental and theoretical study of high-flat and stable leveler tetrazolium blue chloride in the thickening process of copper through holes

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Journal of Industrial and Engineering Chemistry 2025年 147卷 360-369页

作者： Li, Xin Li, Yaqiang Zhang, Yuanhang Li, Ruopeng An, Maozhong Yang, Peixia Zhang, Jinqiu MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin150001 China Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai Yantai264006 China

In the through hole plating of printed circuit board (PCBs), the development of highly quality flattening machine has become the core task of the development of through hole thickening. In this paper, tetrazolium blue chloride (TB) with stable structure of tetrazolium is selected as the through-hole plating agent to achieve high plane thickening of PCB through-hole. A series of electrochemical tests show that TB has good adsorption characteristics at the cathode, can effectively suppress copper deposition, and has a convective adsorption effect, and has the potential to be used as a leveler. Its adsorption on the copper surface and interaction with PEG and SPS are confirmed by in situ Raman and in situ electrochemical FTIR spectroscopy. Through quantum chemical calculation, it is analyzed that TB is adsorbed on the surface of copper layer through tetrazolium structure and forms ph···Cu2+ ionic bond, thus co-suppressing copper deposition. Finally, through the throwing force (TP) measurement and atomic force microscope (AFM) experiments, it is confirmed that at the current density of 1.5 A·dm−2, TB has high thickening performance (TP = 136.7 %) and excellent leveling ability (Ra = 22.2 nm) in PCB through hole plating. © 2024 The Korean Society of Industrial and Engineering Chemistry

关键词： Fourier transform infrared spectroscopy

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Abnormal dielectric behavior of glaserite-type Ba_(3−x)Sr_(x)MgSi_(2)O_(8)solid solution

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Journal of advanced Ceramics 2025年第2期14卷 77-86页

作者： Jiaqing Yang Peng Lei Xiaoqiang Song Changzhi Yin Meng Zhang Weicheng Lei Yiyang Cai Mingfei Cheng Yaodong Liu Zihang Chen Yaqing Hu Wenzhong Lu Wen Lei School of Optical and Electronic Information Key Lab of Functional Materials for Electronic Information(B)of MOEHuazhong University of Science and TechnologyWuhan 430074China Wenzhou Key Laboratory of Microwave Communication Materials and Devices Wenzhou Advanced Manufacturing Institute of HUSTWenzhou 325035China

The temperature coefficient of the resonant frequency(τ_(f))of low-permittivity(ε_(r))microwave dielectric ceramics is required to be near 0 ppm/℃for practical ***,owing to the polarization mechanism,τ_(f)of low-ε_(r)microwave dielectric ceramics is generally ***,a novel microwave dielectric ceramic,Ba_(3−x)Sr_(x)MgSi_(2)O_(8),with an abnormal positiveτ_(f)at the applied temperature is *** this study,Sr^(2+)with a relatively small ionic radius was introduced to replace Ba^(2+),and a single-phase solid solution was formed(x>0.5).Ba_(3−x)Sr_(x)MgSi_(2)O_(8)ceramics were discussed in glaserite-type topology with space groups of P_(3)^(-)for x≤0.5,relatively high symmetry P_(3)^(-)m1 for 0.5

关键词： microwave dielectric ceramics abnormal dielectric behavior ion size mismatch [SiO4]tetrahedra tilting phase transition density functional theory(DFT)

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Remission of iron overload in adipose tissue of obese mice by fatty acid-modified polyoxovanadates

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Rare Metals 2025年第1期44卷 461-471页

作者： Kun Chen Yu-Rong Qin Sheng-Qiu Liu Rou-Ling Chen South China Advanced Institute for Soft Matter Science and Technology School of Emergent Soft MatterSouth China University of TechnologyGuangzhou 510641China Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing South China University of TechnologyGuangzhou 510641China Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices South China University of TechnologyGuangzhou 510641China Department of Computer Science City University of Hong KongHong Kong 999077China

Iron overload has been evidenced to contribute to obesity-associated metabolic disorders,including insulin *** to reduce iron levels might help manage the metabolic complications associated with ***,it is demonstrated that the specific accumulation of oleic acid-modified polyoxovanadates(OPOVs)in adipose tissue leads to the reduction of iron concentrations in adipocytes in mice fed with a high-fat diet(HFD).Conjugation of oleic acids to polyoxovanadates enables tissue-specific depletion of iron from white adipose tissue(WAT)by OPOVs,protecting mice from HFD-induced obesity and obesity-associated metabolic *** tolerance and insulin sensitivity are improved in OPOV-treated mice,which demonstrates that the OPOV-induced iron depletion can reverse the metabolic degeneration caused by HFD-induced ***,a decrease in expression of the marker genes of iron overload suggests the participation of OPOVs in maintaining iron homeostasis and a potential medical application of vanadium clusters in targeting the iron overload caused by *** findings underscore the potential of vanadate-based clusters tailored to address the complex interplay between iron metabolism and metabolic health.

关键词： Polyoxovanadates Lipophilic conjugation Obesity Iron overload Insulin resistance

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Remarks of Optical Fibers and Devices for Microfluidic Sensing:Preparation and Processing

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Photonic Sensors 2025年第2期15卷 70-89页

作者： Xiaotong ZHANG Tingting YUAN Center for Advanced Manufacturing and Future Industry Future Technology SchoolShenzhen Technology UniversityShenzhen 518118China Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging National-Regional KeyTechnology Engineering Laboratory for Medical UltrasoundSchool of Biomedical EngineeringShenzhen UniversityMedical SchoolShenzhen UniversityShenzhen 518060China

With the gradual maturity of the microfluidic technology,the integration of the microfluidic chip technology and optofluidic methods in microstructured optical fibers(MOFs)has gradually formed a highly attractive new research *** this paper,we summarize our recent work focusing on the microfluidic sensing technology based on microhole *** design and fabrication of such microfluidic fibers,device processing and fabrication techniques based on microfluidic fibers,and surface modification and coating methods for fibers are systematically ***,several typical cases combining the optical fiber and microfluidic substance detection are presented.

关键词： Microfluidic microfluidic optical fiber optical fiber sensor optical fiber device

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Finite-Time Consensus of Second-Order Multiagent Systems With Input Saturation via Hybrid Sliding-Mode Control

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IEEE Transactions on automation Science and Engineering 2025年 22卷 14623-14632页

作者： Jiang, Xiaowei Jiao, Ranran Li, Bo Zhang, Xianhe Yan, Huaicheng China University of Geosciences School of Automation Wuhan430079 China Ministry of Education Hubei Key Laboratory of Advanced Control and Intelligent Automation of Complex Systems Engineering Research Center of Intelligent Geodetection Technology Wuhan430074 China Ministry of Education Key Laboratory of System Control and Information Processing Shanghai200240 China Anhui University of Finance and Economics School of Finance Bengbu233030 China Hubei Normal University School of Electrical Engineering and Automation Huangshi435002 China Ministry of Education East China University of Science and Technology Key Laboratory of Smart Manufacturing in Energy Chemical Process Shanghai200237 China

This paper addresses the finite-time consensus (FTC) issue for second-order multi-agent systems (MASs) with nonlinear disturbances. To tackle the challenges posed by increasingly complex communication environments, an innovative integral sliding-mode surface is designed using event-triggered control. Furthermore, the study explores communication constraints between the leader and followers, employing impulsive control to facilitate communication only at specific intervals. A novel hybrid integral sliding-mode control protocol is advanced for the second-order MASs, which effectively eliminates the "Zeno phenomenon" and notably reduces both communication frequency and energy consumption, thereby enhancing overall communication efficiency. Ultimately, the efficacy of the put forward protocol is verified through simulation examples including comparison experiment. © 2004-2012 IEEE.

关键词： Protocols Sliding mode control Event detection Multi-agent systems Costs Training Topology Switches Sufficient conditions Stability analysis

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Machine learning empowered UAV-based beamforming design in ISAC systems

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Science China(Information Sciences) 2025年第5期68卷 285-286页

作者： Xiangyang DUAN Xiaoqi ZHANG Shuqiang XIA Zhongbin WANG Yihua MA Weijie YUAN State Key Laboratory of Mobile Network and Mobile Multimedia Technology Wireless and Computing Research InstituteZTE Corporation School of Electrical and Data Engineering University of Technology Sydney School of Automation and Intelligent Manufacturing Southern University of Science and Technology

Integrated sensing and communication (ISAC) has been proposed as an enabling technology for the realization of the next-generation wireless system,which focuses on performing wireless communication and sensing *** the various potential ISAC-based applications,unmanned aerial vehicle (UAV)-based ISAC plays a significant part in unlocking the potential of future next-generation wireless communication,facilitating low-latency data transmission in high-mobility *** by recent advancements,a variety of effective techniques have been investigated to optimize beamforming design in ISAC *** instance,the authors in [1] introduced an extended Kalman filtering (EKF)-based method tailored for millimeter wave (mmWave) ISAC ***,Ref.[2]proposed an extended interacting multiple model (IMM)-EKF framework designed for vehicular networks with intricate roadway *** these advancements,the aforementioned methods typically employ a separate scheme for channel prediction and beam alignment,which introduces additional signaling overhead in real-world ***,there is a demand for an end-to-end beamforming design approach specifically for UAV-based ISAC systems.

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Synergic strength-ductility enhancement in bimodal titanium alloy via a heterogeneous structure induced by theslip

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材料科学技术（英文版） 2025年第1期204卷 255-267页

作者： Tingyi Lin Lei Zhou Yingfei Guo Pingwei Xu Yusong Li Jiaxun Zhang Yilong Liang Yu Liang College of Materials and Metallurgy Guizhou UniversityGuiyang 550025China Guizhou Key Laboratory for Mechanical Behavior and Microstructure of Materials Guizhou UniversityGuiyang 550025China National & Local Joint Engineering Laboratory for High-Performance Metal Structure Material and Advanced Manufacturing Technology Guiyang 550025China Engineering Training Center Guizhou Institute of TechnologyGuiyang 550003China College of Materials and Metallurgy Guizhou UniversityGuiyang 550025China Guizhou Key Laboratory for Mechanical Behavior and Microstructure of Materials Guizhou UniversityGuiyang 550025China National & Local Joint Engineering Laboratory for High-Performance Metal Structure Material and Advanced Manufacturing Technology Guiyang 550025China

In this work,a heterogeneous structure(HS)with an alternating distribution of coarse and fine α lamella is fabricated in bimodal Ti6242 alloy via insufficient diffusion of alloying elements induced by fast heat-ing *** of a distinct interface between the primary α phase(αp)and β transformation microstructure(βt)in the equiaxed microstructure(EM),all αp/βt interfaces are eliminated in the HS,and the large αp phases are replaced by coarse α *** to the EM alloy,the heterostruc-tured alloy exhibits a superior strength-ductility *** enhanced strength is predominantly attributed to the increased interfaces of α/β plates and hetero-deformation induced(HDI)strengthening caused by back ***,good ductility is ascribed to its uniform distribution of coarse and fineα lamella,which effectively inhibits strain localization and generates an extra HDI *** can be evidenced by the accumulated geometrically necessary dislocations(GNDs)induced by strain partitioning of the ***,the HDI causes extradislocations piling up in the coarse αlamella,which generates an extra strain hardening to further improve the *** hetero-interface coordinated deformation mechanism sheds light on a new perspective for tailoring bimodal titanium al-loys with excellent mechanical properties.

关键词： Bimodal Ti6242 alloy Heterogeneous structure Tensile properties dislocation

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Formative manufacturing of heterogeneous composite plates: a review

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Materials Today 2025年 86卷 548-574页

作者： Zhang, Jia Yang Li, Feng Niu, Wen Tao Wang, Zi Yi Cao, Mu Zi School of Materials Science and Chemical Engineering Harbin University of Science and Technology Harbin150040 China Key Laboratory of Advanced Manufacturing and Intelligent Technology Ministry of Education Harbin University of Science and Technology Harbin150080 China Heilongjiang Provincial Key Laboratory of Light Metal Materials Modification & Green Forming Technology Harbin University of Science and Technology Harbin150040 China

The integration of superior characteristics from individual components achievable in heterogeneous composite plates can be achieved through optimal material configuration and combination methods. This approach results in significant enhancements in physical, mechanical, and forming properties when compared to traditional single metal plates. However, challenges such as prolonged manufacturing cycles and the complexity of coordinating interface characteristics and microstructural properties impede the rapid advancement and widespread adoption of heterogeneous composite plate manufacturing. This study offers a comprehensive overview of the primary forming methods for heterogeneous composite plates, including rolling, extrusion, welding, hot pressing, and additive manufacturing. It addresses current challenges and anticipates potential developmental directions, such as the application of specialized energy field-assisted forming techniques and the design of heterogeneous microstructures. The exploration of new resources, the expansion of innovative concepts, the establishment of novel models, the promotion of new principles, and the adoption of transformative technologies are essential for the breakthrough development of heterogeneous composite plate manufacturing. Aligning with the national innovation-driven development strategy and the requirements of major national projects remains a fundamental objective of this research direction. © 2025 Elsevier Ltd

关键词： Hot pressing

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Narrowband directional chiral emission enabled by hyperbolic material α-MoO3

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Optics Express 2025年第8期33卷 16965-16975页

作者： Wu, Biyuan Huang, Xiqiao Liu, Haotuo Wu, Xiaohu School of Power and Energy Northwestern Polytechnical University Shaanxi Xi’an710072 China Thermal Science Research Center Shandong Institute of Advanced Technology Shandong Jinan250100 China Key Laboratory of Advanced Manufacturing and Intelligent Technology Ministry of Education Harbin University of Science and Technology Harbin150080 China

Chiral emission plays a pivotal role in the design of advanced sensors and thermal detectors. However, the ability to control the chiral emission of far-field thermal radiation over a fixed narrow angular range is an important yet currently limited capability. In this paper, we investigate a lithography-free chiral thermal emitter based on the hyperbolic material α-phase molybdenum trioxide (α-MoO3). Numerical studies demonstrate that the proposed chiral emitter is highly sensitive to the incident angle, showing narrowband chiral emission exclusively in the range of incidence angles from 75° to 89° at a wavelength of 10 µm. The directional chiral emission arises from the extrinsic chirality resulting from the mutual orientation of the α-MoO3 film with in-plane anisotropy and the incident light. Furthermore, we elucidate the mechanism through polarization conversion and analyze the degree of polarization (DoP) of the thermal radiation. Our findings indicate that the DoP can reach 0.95, signifying efficient conversion of left-handed to right-handed circularly polarized light while maintaining perfect polarization at the resonant wavelength. Electric field distributions further validate the origin of directional chiral emission. This study not only advances the understanding of circularly polarized light manipulation but also promises significant applications in chiral sensing and thermal detection. © 2025 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.

关键词： Heat radiation

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