bluuebunny/crossref_metadata_2025_split huggingface dataset:
Development of a DSP based collaborative computing platform for power system
Authors: Chen Julong , Huang Guanbiao , Yang Jierui , Zhao Ligang , Li Zhen , Wang Changxiang , Zhang Zhaofeng , Zhen Hongyue , Wu Xiaoshan 
Published: August 2024

Abstract
With the advancement of information technology, there has been tremendous progress in data production, processing, and storage technology, especially in data processing technology. With the rapid development of the power grid, its operation has become more intelligent and efficient. Traditional power system simulation and analysis tools have disadvantages, such as slow message transmission and the inability to share data, which cannot meet the requirements of modern power system simulation calculations. DSP was introduced and developed by the Southern Power Grid Research Institute and can perform various simulation calculations such as transient stability calculation, power flow calculation, and short circuit calculation. It is widely used in departments such as power planning and design. However, the data calculated by DSP is input through a data card, which is cumbersome and difficult to manage. In order to meet the new requirements of power system simulation analysis, a power system collaborative computing platform has been developed based on DSP, which makes DSP data maintenance and management more efficient and intuitive. It comprehensively improves the efficiency of power grid planning work. This article provides a detailed analysis of the architecture design and application problems of the power system collaborative computing platform, clarifies the requirements of large-scale interconnected power grids for simulation computing data management, and proposes solutions that can meet the needs of simulation computing data management in China’s power grid from two aspects: key data architecture issues and software architecture technology.
Analysis of influencing factors and its coupling degree of resistivity of rocks
Authors: Wang Zhinan , Wang Jianguo , Wei Shengyun , Hu Jian , Li Yan 
Published: August 2024

Abstract
Over the years, it has been carried out on the method of resistivity exploration mainly from the macro level, and it has made a greater contribution to the search for minerals. However, it is found that the data interpretation effect obtained from the macro level for ore deposit exploration has a large error. Therefore, the research on the method of resistivity exploration of rock and ore from the micro level has become a new research difficulty and hot spot. Based on the team’s previous experimental analysis and research, this paper takes the Chazangcuo Cu-Pb-Zn deposit as the research object, carries out the study of the resistivity of rocks from the microscopic level, and focuses on the study of water content, temperature, pressure, porosity and other influencing factors of the Chazangcou deposit, with the help of field geological survey, testing, and analysis. The coupling process of the influencing factors is analyzed based on the experimental results and the grey correlation idea, and the calculation of the coupling degree is proposed to indicate the degree of coupling. According to the results of the test and calculation, the coupling degree of resistivity of rocks is water content>porosity>temperature>pressure.
Development and properties research of different structural EPEG-type polycarboxylate superplasticizers in UHPC
Authors: Wang Zhaopeng , Fang Yunhui , Zhong Lina 
Published: August 2024

Abstract
Ethylene glycol monovinyl ether polyethylene glycol ether (EPEG) is employed as a novel 6C monomer to synthesize polycarboxylate superplasticizers of varying molecular weights through free radical polymerization. Gel permeation chromatography (GPC), rheological analysis, and other testing methods are employed to investigate the influence of EPEG-based polycarboxylate superplasticizers on the dispersibility, rheological properties, and workability of Ultra-High Performance Concrete (UHPC). The results indicate that with increasing monomer molecular weight, the fluidity and rheological parameters (plastic viscosity and yield stress) of the samples tend to increase, accompanied by a similar trend in slump flow diameter and an increase in the slump flow diameter and 28-day compressive strength of the UHPC mix. When the monomer molecular weight reaches 1100, corresponding to E1PCE, the dispersibility, flowability, and mechanical properties of the UHPC mix are optimized.
Study on hydrogen embrittlement sensitivity of 30CrMnSiNi2A steel in electrochemical hydrogen charging
Authors: Cen Chengxian , Zhu Junjin , Li Ronghui , Wu Qingyuan 
Published: August 2024

Abstract
Electrochemical hydrogen charging was performed on a 30CrMnSiNi2A steel tensile sample, and the difference in hydrogen-charging effect with different hydrogen-charging times, current densities, and toxic agents was compared. The effect of hydrogen on the tensile strength, elongation and failure mode of the material was studied by the tensile test of slow strain rate. Results of the test show that hydrogen can greatly reduce the tensile strength, plastic deformation capacity, and elongation of 30CrMnSiNi2A steel, and the higher the hydrogen concentration in the material is, the more obvious the reduction will be. Hydrogen can make the failure mode of 30CrMnSiNi2A steel change from ductile failure to quasi-joint fracture and intergranular fracture.
High-strength and lightweight alloy materials for new energy vehicles
Authors: Wang Weilong , Shen Hao , Shi Xi , Zhong Qingdong , Le Xiawen , Guo Wei 
Published: August 2024

Abstract
The Fe-8wt. % Al alloy ingot was obtained by melting the pure iron and the pure aluminum together. The four plate samples were prepared by cold rolling the ingots with certain thicknesses by 80%, 70%, 63%, and 50%. The four samples were annealed at 850°C, 900°C, 950°C and 1000°C in air and kept for 5 min, 10 min and 15 min before quenching. The Fe-8wt. % Al alloy ingot was obtained by melting the pure iron and the pure aluminum together. The four plate samples were prepared by cold rolling the ingots with certain thicknesses by 80%, 70%, 63%, and 50%. The four samples were annealed at 850°C, 900°C, 950°C and 1000°C in air and kept for 5 min, 10 min and 15 min before quenching. It is revealed that the sample’s structure was optimized when the sample was cold rolled by 80%, annealed at 900°C for 10 min, and quenched. This also led to a maximum extension. It is revealed that the sample’s structure was optimized when the sample was cold rolled by 80%, annealed at 900°C for 10 min, and quenched, also this led to a maximum.
Numerical study on the polydispersive effect of filler size distribution on the properties of thermal interface materials
Authors: Zong Ruoyu , Liu Bin , Jia Xiao , Wang Shijun , Li Shikun , Huai Xiulan 
Published: August 2024

Abstract
Advanced thermal interface materials (TIMs) are indispensable for work reliability and lifespan assurance of high-power density electronic systems by facilitating timely and effective heat dissipation. A random algorithm consisting of diluting, dropping, and stirring processes is first proposed to simulate microstructures of TIMs with continuous particle size distribution, with an accessible maximum volume fraction of 55 vol%. Then the size polydispersity impact on the thermal performance and the fluidity of TIMs is numerically investigated. Simulation results reveal that as the particle size polydispersity increases, the thermal conductivity of TIMs improves, along with the improved fluidity. Therefore, it is necessary to consider the polydispersive impact of filler size distribution in actual production and optimize the material preparation process based on the actual distribution of particles. This work provides a deeper understanding of the influence of particle polydispersity on the co-optimization of the desired attributes of TIMs.
Effect of heat treatment solid solution temperature on high-temperature performance and diffusion welding tissue of IC10 superalloy
Authors: Li Qi , Liu Fengmei , Gao Haitao , Zhang Xueying , Gao Shiyi 
Published: August 2024

Abstract
IC10 superalloys with small pressure and large gaps were welded by TLP diffusion welding. Based on this, the effects of heat treatment on the weld organization and welding performance of IC10 joints were discussed. The results showed that when SBM-3 was used as intermediate solder, the weld structure was similar to that of base metal under the welding process of 1250°C, 0.2 MPa, and 6h. The tensile strength was 133.7 MPa at the temperature of 1100°C. After heat treatment mechanism A, in the joint structure, a larger volume concentration of γ+γ′ phase existed in the weld, smooth transition from base metal to welded joint. Under the heat treatment mechanism A, the tensile strength at 1100°C high temperature can reach 204.6MPa (more than 85% strength of IC10). The appropriate heat treatment mechanism can get small enough micro holes and low enough porosity joints, ensuring the excellent high-temperature mechanical properties of high-temperature alloy.
3D printing turbine slicing path optimization based on FDM technology
Authors: Chen Junwei , Yu Jiaqi , Zhang Yinglong 
Published: August 2024

Abstract
In 3D printing technology, optimizing the slicing path is very important for printing efficiency and forming quality. In this study, the slicing path of the turbine STL model in 3D printing based on FDM technology is optimized. By improving the traditional slicing algorithm, data redundancy is reduced, and the efficiency of path generation is improved. An index-based optimization slicing algorithm is proposed, which effectively improves the efficiency of the algorithm, reduces the system consumption, and achieves more efficient slicing processing.
Optimisation design of water-fertiliser infiltration device based on TRIZ theory
Authors: Liu Taihua , Lv Bing , Zhu Wenqi , Song Chenghao , Shen Xianghao 
Published: August 2024

Abstract
This paper is based on functional flow and modular design to optimize the design of water-fertilizer integrated percolation irrigation device. Functional decomposition and the construction of functional structure model are completed, and the detection module and the delivery and irrigation module are identified as the modules to be optimized. Apply TRIZ theory to solve the power supply problem of the detection module in harsh environment and design the energy conversion structure. For the clogging problem of the irrigator, an anti-clogging design, labyrinth flow channel and unclogging pipe are proposed. For the labyrinth flow channel built-in elastic small pieces, can be compensated for the pressure of the irrigator outlet, labyrinth flow channel to form turbulence is not easy to form a blockage. When the pipe is clogged, through the inflatable unclogging pipe, to realize the clogging position of the air pressure impact, to complete the clogging unclogging.
Numerical simulation research on the launch process of pneumatic launch device
Authors: Li Rong , Zi Haoran , Chen Lei 
Published: August 2024

Abstract
In order to deal with the potential threats posed by low-altitude UAVs, an anti-UAV net-catching device was designed based on the principle of pneumatic launch. The internal ballistic calculation model of the net-catching device during the launch process was established, and the pressure-stabilizing air chamber of the device was numerically simulated. The impact of pressure, air chamber volume, gas channel diameter and barrel length on the performance of the launch device to capture the UAV was analyzed. The internal relationship between different influencing factors on the muzzle velocity and the air pressure drop of a single shot was analyzed. Selecting appropriate internal ballistic characteristics to capture UAVs at different target distances provides theoretical guidance for in-depth research on anti-UAV netting devices.
Cutting state recognition of spiral bevel gear face hobbing
Authors: Wang Jingchao , Yu Jianwu , Huang Kaifeng , Shang Zhentao , Qian Jun 
Published: August 2024

Abstract
To investigate the issue of chatter vibration during the face hobbing process of spiral bevel gears, this study conducted experiments on the YKA2260 gear hobbing machine, collecting 142 sets of vibration acceleration signals. The optimal combination for wavelet threshold denoising was determined based on the signal-to-noise ratio (SNR), and preprocessing of the raw signals was performed. Utilizing wavelet packet decomposition, the energy entropy of wavelet packet coefficients was extracted as feature values. A recognition model for the cutting state during the face hobbing process of spiral bevel gears was established using a Support Vector Machine, achieving a recognition accuracy of up to 98.0769%. Furthermore, the model’s high recognition accuracy for small training samples in engineering applications was validated.
Research on point pressing process of curved parts of thick plates with asymmetric double curvature of high strength steel
Authors: Ji Han , Gao Shuang , Tang Min , Yu Banhai , Li Xu 
Published: August 2024

Abstract
High-strength steel asymmetric double-curvature thick plate curved parts are widely used in shipbuilding, nuclear power and other industries, but their accurate forming has been a challenge due to their high strength, large size, asymmetric structure and serious springback. In this paper, the simulation analysis study of spot press forming is carried out with large-size double-curvature spherical thick shells as the research object, and the effects of mould surface size, mould radius of curvature on the results of pressing and forming of asymmetric double-curvature curved thick plate parts made of high-strength steel are analyzed. The results show that the pressing route of pressing the centre of the slab first and then carrying out point pressing along the line of symmetry to the surroundings has the best forming effect. Different mould profile dimensions and radius of curvature of the profile have a great influence on the simulated forming results.
Study on fracture toughness of ultra-thin stainless steel foils
Authors: Wang Ke , Hu Yifeng 
Published: August 2024

Abstract
Ultra-thin stainless steel foils have garnered significant attention due to their exceptional mechanical properties, including light weight, high strength, toughness, corrosion resistance, oxidation resistance, high temperature resistance, and superior shielding properties. In this study, we conducted experimental tests to evaluate the mechanical properties of ultra-thin stainless steel foils, focusing on the determination of Young’s modulus and yield stress for two distinct thicknesses of steel foils. Furthermore, employing both experimental and numerical simulation methodologies, we investigated the impact of wrinkles on the fracture toughness of steel foils containing central cracks subjected to tensile loading. The findings presented in this paper not only contribute to a comprehensive understanding of the mechanical behavior of ultra-thin stainless steel foils but also serve as a fundamental basis for subsequent numerical simulations and fracture toughness estimations. This research lays the groundwork for advancing the development and utilization of ultra-thin stainless steel foils across various industrial applications.
Analysis of the dynamic performance of pantograph-catenary system with posture of pan-head
Authors: Dong Yifeng , Zhou Ning , Zhang Weihua 
Published: August 2024

Abstract
This article focuses on the changes in the contact pressure between the pantograph and the catenary caused by variations in the pan-head posture. Starting from the kinematics and dynamics of the pantograph and based on the theories of multibody dynamics and finite element analysis, the pantograph head model is validated, and a pantograph rigid-flexible coupling model considering the flexibility of the pantograph head is established. A coupling model between the pantograph model and the rigid contact catenary is established to extract the pantograph posture and dynamic performance data during operation. By finely considering and modeling the structural characteristic parameters of the pantograph, the influence of different pantograph head characteristic parameters on the dynamic performance of the catenary system is studied. This provides a research basis for understanding the degree of influence of different characteristic parameters on the catenary dynamics.
Kinematics analysis and simulation of bionic five-finger manipulator
Authors: Zheng Jian , Zhang Lihua , Wang Zhenyao 
Published: August 2024

Abstract
To address the complexity of traditional manipulator structures, a bionic five-finger manipulator has been designed and developed. After introducing the manipulator’s structure and functionality, the kinematic model was established using the D-H parameter method, followed by the analysis of forward and inverse kinematics. The fingertip pose was derived using the homogeneous transformation formula, and the accuracy of the theoretical analysis was validated by comparing the mathematical and MATLAB simulation results. The Monte Carlo method was employed to determine the accessible motion space of the mechanical fingertip. Subsequently, trajectory planning for the manipulator was performed based on known initial and end finger angles. A comparison with ADAMS simulation results demonstrated the rationality of the mechanical finger’s movement space, stable speed, and compliance with actual grasping requirements. This study lays a theoretical foundation for the subsequent parameter optimization of the manipulator.
Experimental Study of Sediment Erosion in Pelton Turbine Bucket
Authors: Umar Baig Mirza , Poudel Ravi , Wang Zhengwei , Chitrakar Sailesh , Karna Aaditya , Thapa Bhola 
Published: August 2024

Abstract
In hydroelectric power plants (HPPs), sediment-laden water flows through entire turbines, causing components to be damaged over time. Pelton turbine components serve abrasive erosion from particle hardness, and rough surface when subjected to high flow velocities and various jet impingement angles. In this study, an experiment was conducted to examine the erosion-prone areas of a small-scale Pelton turbine bucket under actual flow conditions. For the experiment, the Pelton bucket was painted with four distinct layers of paint: red, yellow, green, and blue. These layers served as indicators, helping us to visually track the erosion process. The setup was specifically designed to inject sediment upstream of the nozzle. It operated for a significant period of 0- 30 minutes, and every 5 minutes, the erosion pattern was noted with the nozzle fully open at 10 l/s and a net head of 6m with jet impingement angle 75°, 90°, and 105°. After operating for 0-30 minutes in sediment-laden flow conditions, a pattern of erosion was revealed, showing the hot spots (areas more susceptible to erosion) during the investigation at jet angles of 75°, 90°, and 105°. The most severe erosion areas are in the bucket domain, specifically at the splitter region and the deeper upper and lower parts of the brim. The erosion mechanism was influenced by the jet diameter and impingement angle on the bucket splitter. The experiment revealed that the outer regions of the bucket, where the flow was directed outward, suffered the most severe erosion, providing evidence of particle separation at high accelerations.
Analyzing the effect of hydrodynamic damping on the wake behavior in circular blade cascades: numerical study on a global mode
Authors: Gaiti Gabriele , Albicini Francesco , Dahal Dadi Ram , Trivedi Chirag 
Published: August 2024

Abstract
In this study, a numerical investigation has been performed to extract and compare the hydrodynamic damping of a non-rotating system of eight planar hydrofoils, arranged in a radial configuration, with the related wake behaviour downstream the structure. A modal acoustic analysis has been performed on the structure in order to extract the global modes corresponding to Nodal Diameter 0. Using the deformation related to the global mode, the hydrodynamic damping has been extracted for different velocities, ranging from 2 to 14 m/s, by analyzing the work done on the structure from the fluid, following the so-called “flutter” method developed by ANSYS®. The related wake behaviour has been analyzed for each specific velocity and hydrodynamic damping conditions. This numerical study has been performed in ANSYS Mechanical® and CFX®. The results for the present geometry suggest that the primary factor governing vortex shedding frequency is the motion of the body itself, in the present case locked to the excitation frequency of the global structural mode (ND0). The study identifies a lock-in region around 10 m/s, consistent with empirical formulas. After the region of lock-in, the fluctuations of velocity and pressure values tend to converge, indicating a stabilization of the wake dynamics. The observed hydrodynamic damping trend exhibits a linear pattern preceding the lock-in region, succeeded by a steep rise thereafter. This pattern aligns with established literature, affirming its consistency with prior research findings. Overall, this numerical approach offers valuable insights into wake behavior and hydrodynamic damping value serving as a promising tool for preliminary estimation and analysis of oscillating systems in water flowing environments. Its low computational complexity and rapid completion time make it a viable alternative to more complex FSI simulations, facilitating comprehensive exploration of multiple flow scenarios within a reasonable time frame of weeks.
Sustainable Manufacturing Practices in the Hydropower Industry: A review
Authors: Baral B. , Kharel B. , Dawadi A. , Timsina S. , Joshi R 
Published: August 2024

Abstract
Hydropower is a crucial source of renewable energy in the ever-changing world, contributing significantly to global electricity generation. As the world focuses more on sustainability, the manufacturing processes within the hydropower industry have undergone considerable transformations to align with eco-friendly practices. This review explores the landscape of sustainable manufacturing practices implemented in the hydropower sector, examining the various strategies, technologies, and initiatives adopted to minimize environmental impact while enhancing efficiency of the project. The review encompasses the significance of sustainable materials and manufacturing techniques within the context of hydropower, highlighting the industry’s commitment to reducing its carbon footprint. It consists of the utilization of advanced materials and technologies aimed at optimizing the manufacturing processes, enhancing the durability and efficiency of hydropower components, and reducing resource consumption. Also, the review highlights the adoption of life cycle assessment (LCA) methodologies in the development and manufacturing phases of hydropower components. These practices facilitate the evaluation of environmental impacts across the entire life cycle of hydropower projects. Furthermore, the review discusses about the implementation of innovative approaches such as Additive manufacturing and CNC machining process as well as casting methods, streamlining production while minimizing waste generation and energy consumption. It also includes the case study of best practices that are prevalent in the context of sustainable manufacturing Additionally, the review examines the role of regulatory frameworks, standards, and certifications in driving sustainable manufacturing practices within the hydropower industry scenario in the world. It also outlines potential future directions to further enhance sustainability in hydropower manufacturing.