bluuebunny/crossref_metadata_2025_split huggingface dataset:
The effect of spherical filled particles on the energy storage density of composite materials
Authors: Yao Yang. , Xiang Tai. , Zheng Qinhong. , Yao Bin. , Zhong Runeng. 
Published: September 2023

Abstract
As one of the popular directions of new energy storage technology, dielectric energy storage technology has a wide application demand and market prospect in the modern new energy field. The research and manufacturing of composite materials is a core technology for the development of energy storage. In particle-filled composites, different filler particles can change a range of electromagnetic parameters of the composite, which can have an impact on the energy storage density of the composite. This paper presents an analytical study on the effect of spherical filled particles in composites on energy storage density. It turns out that when the volume ratio of filled particles is certain, as the permittivity of the filled particles increases, the energy storage density of the composite increases. When increased to a certain range, a limit value is reached. Therefore, under the condition of a certain volume ratio, it is not always possible to optimize the electrical energy storage density by changing the dielectric constant of spherically filled particles only.
Drive simulation analysis of piezoelectric valveless micropump based on ZnO nanorod array
Authors: Song Jiaming , Fu Yujia , Hou Baodong , Liu Hongmei , Dou Yanwei 
Published: September 2023

Abstract
In this paper, ZnO nanorods are combined with the driving mechanism of a piezoelectric micropump to design a valveless piezoelectric micropump. The ZnO nanorods were prepared by the magnetron sputtering method to grow the ZnO seed crystal layer on the silicon surface and then by hydrothermal method. The growth of ZnO nanorods under different solution concentrations, solution temperatures, and growth times was investigated, and analytical methods for analyzing the surface morphology and elemental content of ZnO nanorods. Then, the simulation of the valveless micropump using ZnO nanorods prepared under optimal conditions as piezoelectric oscillators were carried out using COMSOL finite element analysis software, and the maximum output flow rate of about 14.40 μL/s was achieved at 100 V50 Hz.
LiCl on Rheological Characteristics of PAM-LiCl Conductive Hydrogel
Authors: Hong Yang , Lin Zening , Jiang Tao , Yang Yun , Gao Yuan , Luo Zirong , Shang Jianzhong 
Published: September 2023

Abstract
Rheology is a science that studies the flow and deformation of materials and the relationships between various factors that cause them to flow and deform. Finding the relationship between stress and strain, or the rate of both, during fluid deformation is the core issue of rheology research. In this study, a composite hydrogel with good conductivity based on polyacrylamide (PAM) and lithium chloride (LiCl) was introduced. This PAM-LiCl conductive hydrogel is also highly stretchable and can be used for flexible actuation technology of robots. Based on the oscillating rheological testing method, the dynamic response of this material under different thermal-mechanical loads was measured, and intrinsic parameters such as shear modulus and yield stress were obtained. Based on the test results, the material ratio and mechanical properties suitable for the preparation of PAM-LiCl conductive hydrogel were obtained, which laid the foundation for the preparation of conductive hydrogel-related materials.
Static properties analysis of fiber optic wire wrapping
Authors: Tang Peiqi , Yang Dongwu 
Published: September 2023

Abstract
To improve the quality of fiber optic wire wrapping, the influence of each parameter of fiber optic wire wrapping on the stress distribution of wire wrapping is studied, and the mechanical properties of fiber optic wire wrapping are simulated based on the principle of fine mechanics of composite materials. Solid elements are used for modeling through finite element analysis, and the problem of using ANSYS to solve the wire package is initially solved by establishing a 1° model for analysis and calculation. The results show that the core cylinder slightly, core cylinder radius, and fiber diameter have no effect on the stress distribution state of the fiber in the wire pack, but if the core cylinder stiffness increases, the minimum stress value of the wire pack will also increase, and the minimum stress area of the fiber unit tends to be far from the core cylinder surface.
Research on the Motion Reliability of Nursing Bed Mechanism Based on Response Surface Method
Authors: Pei Tianshuo , Li Qilin , Yu Chengtao , Liu Kailei 
Published: September 2023

Abstract
To study the analysis and optimization of the motion reliability of multifunctional nursing bed mechanism, the ADAMS software platform was chosen to simulate the parametric modeling of the nursing bed with consideration of dimensional and clearance errors. Taking the back-raising mechanism as an example, we verify the accuracy of the model by comparing the experimental data. Based on the effect of clearance error, a response surface model with motor end hinge clearance, push rod end hinge clearance, back support pivot clearance, and bed plate hinge clearance, as the influencing factors and angular velocity reliability and angular acceleration reliability as the response values, were established, and the significance of the influencing factors of the response values was obtained by using ANOVA. Based on the reliability of angular velocity as the optimization target and each influencing factor, simulation experiments were conducted to verify that the error of the model optimization result of the response surface method was 1.64%. It shows that the model prediction is more accurate and the response surface method is feasible for the mechanism motion reliability optimization analysis.
Failure analysis of copper substrate crack in high-voltage power supply
Authors: Liu Shengsheng , Li Biao 
Published: September 2023

Abstract
Aiming at the crack phenomenon of a copper substrate circuit in a high-voltage power supply, the slice analysis was carried out and showed that the crack part was the dielectric layer of the copper substrate. The finite element analysis is used to study the reason for dielectric layer cracking and discuss the improvement measures from the thickness of thermal conductive gel and the layout of components. The simulations results show that the reason for dielectric layer cracking is that the surface-mounted device (SMD) is too close to the mounting hole when the copper substrate bottom is coated with thermal conductive gel, reducing the thickness of thermal conductive gel or keeping the SMD away from the mounting holes can avoid the dielectric layer cracking, but it is easier to change the location of SMD.
Study on the Calculation of Hole/Pin Floating Deviation for “Two Pins on One Side”
Authors: Tang Liyuan , Xu Xusong 
Published: September 2023

Abstract
“Two pins on one side” is a common clamping method in industrial production, but due to the presence of hole/pin clearance, mounting features on the part are often misaligned due to hole/pin float. To ensure the subsequent assembly of the part, the amount of deviation of the hole/pin float must be calculated to quantify the effective mounting space of the mounting feature. In this study, based on the hole/pin float model, the maximum deviations of 0.0368 mm, 0.0545 mm, 0.0520 mm, and 0.0786 mm were calculated for hole/pin float based on automotive sheet metal parts. The study of the amount of deviation of hole/pin floating is carried out to give a solution to the problem of fixture design in engineering practice.
Equivalent stiffness modeling of wedge-shaped cabin sections based on similarity theorem
Authors: Zhang Jizheng , Tao Guoquan , Liu Boyu , Chen Jialin , Xiang Bin , Wang Mingzhen , Hu Qi , Zhang Chuzhe 
Published: September 2023

Abstract
The cabin section of an amphibious aircraft undergoes intense hydrodynamic and aerodynamic loads during water take-off and landing. These loads are crucial for its structural design and strength analysis. Therefore, a water impact test of the cabin section is essential for structural optimization. However, a full-scale model of the cabin section is costly and time-consuming due to its large size. This study proposes a design method that combines a partial similarity model and an equivalent similarity model based on the similarity theory. It constructs a half-scale model that has equivalent stiffness to the full-scale model. This reduces the test cost and improves the test efficiency. First, the cabin section is simplified as a wedge, and the components of the half-scale model are designed individually based on the dimensional analysis method of similarity theory. The equivalence is validated by finite element simulation and theoretical results. Then, the finite element simulation of the cabin section model is conducted, and the mechanical responses of the half-scale and full-scale models under static load are compared and contrasted. The results show that the half-scale model’s mechanical test can predict the full-scale model’s mechanical characteristics.
A Reconfigurable Multi-band Resonator and Its Application to Band-pass Filter
Authors: Cheng Jun , Li Yifang 
Published: September 2023

Abstract
A reconfigurable tri/quad-band resonator and the application to tri/quad-band band-pass filter have been demonstrated. By changing the switching state of the PIN diodes, the filter can work in tri-band mode or quad-band mode. Correspondingly, the resonant frequencies of the band-pass filter are 1.21 GHz, 2.0 GHz, 3.23 GHz, 1.27 GHz, 2.0 GHz, 2.61 GHz, and 3.41 GHz, respectively. Especially, the filter has a combined structure of lumped capacitors and some transmission lines and achieves a small mechanical size of 0.14 λg
× 0.09 λg
, where λg
denotes the wavelength on the substrate of the filter at the first central frequency. The measurement results of the fabricated filter agree with the electromagnetic simulation data.
Analysis of Influencing Factors on Fatigue Life of a Certain Radar Structure
Authors: Jiang Yang 
Published: September 2023

Abstract
The factors affecting the fatigue life of radar structural parts and the measures to improve the fatigue life are analyzed systematically. On this basis, the stress concentration at the right angle of the root and low surface roughness was determined by means of finite element simulation, simulated loading test, and material performance test, which is the main factor of fatigue cracking. Risk analysis was carried out to simulate extreme cracking. The fatigue life of the support materials was increased by increasing the fillet, lifting the surface roughness to avoid stress concentration, and replacing high-strength materials. The improvement measures were verified through tests.
Development of Cutting Temperature Model Based on Experiment and Analysis of its Influencing Factors in Cutting ADI
Authors: Zhao Lidong , Li Baodong 
Published: September 2023

Abstract
Austempered ductile iron (ADI) is a difficult material with severe tool wear during machining, due to the high cutting temperatures in the cutting zone. In this paper, the mathematical model of the cutting temperature is developed based on the turning experiment, and the impact of cutting speed, feeding speed, and cutting depth on the cutting temperature of turning ADI is studied. When the cutting speed and the feed speed increase, a large amount of heat cannot be dissipated, and the cutting zone temperature increases. When the cutting depth increases, the increase of the heat dissipation area makes the cutting temperature change not obvious. This research has important engineering significance for studying the cutting mechanism of ADI and improving cutting efficiency.
Study on Microstructure of Pack-Borided GH4169 Alloy
Authors: Tang Jianguo , Wang Quansheng 
Published: September 2023

Abstract
The structure of the solid pack-boriding layer of nickel-based alloy is studied in this paper. The nickel-based alloy GH4169 was subjected to pack-boriding treatment at 850 °C and 950 °C, and the structure of the alloy boriding layer was studied. After the boriding treatment, a relatively continuous and uniform boriding layer was formed on the surface, which was mainly composed of nickel borides and chromium borides. The sample formed a layered structure of a boriding layer, diffusion zone, and substrate. After boriding treatment, Cr migrated to the surface to form CrB, Cr5B3, and Cr2B chromium borides, while Ni migrated to the lower part of the boriding layer to form Ni2B and Ni3B nickel borides.
Effect of Scratching and Bending Degree on the Residual Stress of the 7055 Aluminum Alloy Plate
Authors: Li Yang , Li Yanan , Li Xiwu , Zhang Yongan , Li Zhihui , Yan Hongwei 
Published: September 2023

Abstract
This study investigated the effects of scratches and bending on the surface stress of aluminum alloy plates with varying thicknesses. The purpose of this study was to provide guidance for surface stress testing of plates with different thicknesses. The “birth and death” element method was used to simulate the generation of surface scratches, while the stress field under the pre-stretched state was obtained through the displacement of one end of the board by 2.5%. The X-ray residual stress analyzer (μ-x360 s) was used to experimentally characterize the stress level on the surface of the plate. The research results showed that the residual stress level near the scratches decreases significantly, while the surface stress level of the plate decreases significantly after bending. The changes in stress values with increasing bending degree for plates of different thicknesses showed that the thicker the plate, the greater the tensile effect on the surface of the plate, resulting in smaller compressive stress. The longitudinal non-uniformity of the plates with different thicknesses was also analyzed, and it was found that the testing error of stress testing results was within ±5 MPa. In conclusion, this study provides useful guidance for the accurate measurement of surface stress on aluminum alloy plates of varying thicknesses, considering the effects of scratches, and bending.
Dual Motor Model Prediction Control with Senseless Control and Parameter Identification Function
Authors: Zhao Wenhao , Zhuo Jinliang , Wang Xikai , Tian Meiying , Lin Yihan , Zhu Yingyi , Kuai Songyan 
Published: September 2023

Abstract
A new control strategy is proposed to address the issues of poor stability and inability to achieve torque synchronization in dual-drive systems. Firstly, the structure of the permanent magnet assisted synchronous reluctance motor is described, and the principles of model prediction dual-torque control, Beetle Antennae Search algorithm, and Kalman filter algorithm are analyzed. The permanent magnet assisted synchronous reluctance motor is used as the main motor, and a senseless control module and parameter identification module for the motor is established on this basis, creating a model prediction dual-torque control model for the dual motor with the above functions. Finally, through simulation, the rationality and accuracy of the model are verified. The results show that the model can balance the torque of the two motors and achieve accurate senseless control and parameter identification.
Continuous pulse advances in the negative ion source NIO1
Authors: Barbisan M. , Agnello R. , Cavenago M. , Delogu R.S. , Pimazzoni A. , Balconi L. , Barbato P. , Baseggio L. , Castagni A. , Pouradier Duteil B. , Franchin L. , Laterza B. , Molon F. , Maniero M. , Migliorato L. , Milazzo R. , Passalacqua G. , Poggi C. , Ravarotto D. , Rizzieri R. , Romanato L. , Rossetto F. , Trevisan L. , Ugoletti M. , Zaniol B. , Zucchetti S. 
Published: September 2023

Abstract
Consorzio RFX and INFN-LNL have designed, built and operated the compact radiofrequency negative ion source NIO1 (Negative Ion Optimization phase 1) with the aim of studying the production and acceleration of H- ions. In particular, NIO1 was designed to keep plasma generation and beam extraction continuously active for several hours. Since 2020 the production of negative ions at the plasma grid (the first grid of the acceleration system) has been enhanced by a Cs layer, deposited though active Cs evaporation in the source volume. For the negative ion sources applied to fusion neutral beam injectors, it is essential to keep the beam current and the fraction of co-extracted electrons stable for at least 1 h, against the consequences of Cs sputtering and redistribution operated by the plasma. The paper presents the latest results of the NIO1 source, in terms of caesiation process and beam performances during continuous (6 ÷ 7 h) plasma pulses. Due to the small dimensions of the NIO1 source (20 cm×∅10 cm), the Cs density in the volume is high (1015 ÷ 1016 m-3) and dominated by plasma-wall interaction. The maximum beam current density and minimum fraction of co-extracted electrons were respectively about 30 A/m2 and 2. Similarly to what done in other negative ion sources, the plasma grid temperature in NIO1 was raised for the first time, up to 80 °C, although this led to a minimal improvement of the beam current and to an increase of the co-extracted electron current.
Measuring tau g-2 using ATLAS Pb+Pb collisions
Authors: Stanek-Maslouska W. 
Published: September 2023

Abstract
Relativistic heavy-ion beams at the LHC are accompanied by a large flux of equivalent photons, leading to photon-induced processes. Measurements of photon-induced production of tau lepton pairs can be used to constrain the tau lepton's anomalous magnetic dipole moment (g-2). A recent ATLAS measurement using muonic decays of tau leptons in association with electrons and tracks is presented. This provides one of the most stringent limits on g-2 of the tau lepton to date.
A long path-length optical property measurement device for highly transparent detector media
Authors: Hecla J. , Bernstein A. , Dazeley S. , Akindele O.A. 
Published: September 2023

Abstract
Measurements of the optical properties of highly transparent liquids are necessary for large-scale detectors that seek to detect optical signatures in kiloton-scale or larger volumes. Detailed understanding of the attenuation and scattering properties of fill media is critical to the ability to accurately simulate detector performance, and yet is often unavailable until in-situ measurements can be performed. Moreover, in-situ measurements may rely on effective attenuation lengths or other approximations to characterize performance, rather than absolute measurements of attenuation and scattering. To better understand the optical properties of potential fill media and purification schemes, a system has been developed which provides simultaneous attenuation and differential scattering cross-section measurements for highly transparent liquids. This horizontal, adjustable path-length “long-arm” system provides excellent isolation from the atmosphere, a high degree of vibration insensitivity, and a simple and reliable method of calibration. Further, scattering measurements can be carried out simultaneously at ports along the beamline equipped with optics allowing the selection of scatter angle and polarization. This enables both reliable quantitative scatter measurements and phase-function separation. This system has been extensively tested using deionized (DI) water as a benchmark, and has demonstrated repeatable measurements of attenuation lengths exceeding 100 m and scattering lengths approaching 1 km.
A high-precision interpolation method for pulsed radio signals from cosmic-ray air showers
Authors: Corstanje A. , Buitink S. , Desmet M. , Falcke H. , Hare B.M. , Hörandel J.R. , Huege T. , Jhansi V.B. , Karastathis N. , Krampah G.K. , Mitra P. , Mulrey K. , Nelles A. , Nivedita K. , Pandya H. , Scholten O. , Terveer K. , Thoudam S. , Trinh G. , ter Veen S. 
Published: September 2023

Abstract
Analysis of radio signals from cosmic-ray induced air showers has been shown to be a reliable method to extract shower parameters such as primary energy and depth of shower maximum.
The required detailed air shower simulations take 1 to 3 days of CPU time per shower for a few hundred antennas.
With nearly 60,000 antennas envisioned to be used for air shower studies at the Square Kilometre Array (SKA), simulating all of these would come at unreasonable costs.
We present an interpolation algorithm to reconstruct the full pulse time series at any position in the radio footprint, from a set of antennas simulated on a polar grid.
Relying on Fourier series representations and cubic splines, it significantly improves on existing linear methods.
We show that simulating about 200 antennas is sufficient for high-precision analysis in the SKA era, including e.g. interferometry which relies on accurate pulse shapes and timings.
We therefore propose the interpolation algorithm and its implementation as a useful extension of radio simulation codes, to limit computational effort while retaining accuracy.
The Front-End electronics for the liquid Argon instrumentation of the LEGEND-200 experiment
Authors: Abritta Costa I. , Budano A. , Burlac N. , Paissan F. , Salamanna G. , Tagnani D. 
Published: September 2023

Abstract
In this paper we provide a detailed technical description of the Front-End (FE) electronics for the liquid Argon instrumentation of the LEGEND-200 experiment, searching for the very rare, hypothetical neutrinoless double β decay process at the Italian Laboratori Nazionali del Gran Sasso. The design stems from the need to read out the silicon photo-multiplier response to the scintillation light in the liquid Argon with excellent single-photon resolution. The FE electronics is required to be placed far from the detectors to meet the experiment's radio-purity constraints. This constraint represents a challenge for a high signal-to-noise ratio. We address how this could be achieved in a stable way. The system was installed in July 2021 and has been commissioned with the rest of LEGEND-200, proving we could attain a very low overall level of
electrical noise of 250 μV peak-to-peak.