bluuebunny/crossref_metadata_2025_split huggingface dataset:
Magnetocaloric properties of Nd-doped Gd5Si4 microparticles and nanopowders
Authors: Zhang 张 Kaiyang 凯扬 , Wang 王 Huanhuan 欢欢 , Wang 王 Ying 颖 , Wang 王 Tao 涛 
Published: August 2024

Abstract
The preparation of materials with enhanced magnetocaloric properties is crucial for magnetic refrigeration. In this study, Nd-doped Gd5Si4 microparticles and nanomaterials were synthesized using the reduction–diffusion method. The impact of Nd doping with varying compositions on the structure and entropy change properties of the materials was investigated. The Curie temperatures of both the micron- and nano-sized materials ranged from 190 K to 210 K, which were lower than previously reported values. Micron-sized samples doped with 1% Nd exhibited superior magnetocaloric properties, demonstrating a maximum entropy change of 4.98 J⋅kg−1⋅K−1 at 5 T, with an entropy change exceeding 4 J⋅kg−1⋅K−1 over a wide temperature range of approximately 70 K. Conversely, the nanomaterials had broader entropy change peaks but lower values. All samples exhibited a second-order phase transition, as confirmed by the Arrott plots.
Status and issues of high-temperature and high-pressure water corrosion research of fusion structural materials in Japanese DEMO reactor development
Authors: Nakajima Motoki , Nozawa Takashi 
Published: August 2024

Abstract
The activated corrosion product assessments of fusion structural materials are essential to designing components and evaluating workers’ radiation exposure. This paper first gives the R&D status of the high-temperature pressurized water corrosion study of reduced activation ferritic/martensitic steels and chromium–zirconium–copper (CuCrZr) alloys, which are the leading candidate materials of fusion reactor in-vessel components such as breeding blanket and divertor, which are utilized in high-temperature and high-pressure water, and the recent progress of corrosion test apparatus simulating the unique environment of a fusion reactor will also be presented.
Numerical study of a general criterion for divertor detachment control
Authors: Yang Hao , Ciraolo Guido , Février Olivier , Fedorczak Nicolas , Rivals Nicolas , Bierwage Andreas , Bufferand Hugo , Falchetto Gloria L , Nakano Tomohide , Tamain Patrick , Bucalossi Jérôme ,   the WEST team
Published: August 2024

Abstract
The parameter

R

D

=

P

rad

/

P

cond

, which measures the ratio of radiated power to conductive heat flux at downstream Scrape-Off-Layer (SOL), is proposed as a robust and practically useful figure of merit for divertor detachment control. The simulations performed using the SOLEDGE3X-EIRENE code predict that the instant where

R

D

passes through unity (that is, when

P

rad

≈

P

cond

) coincides with the detachment of the radiation front from the divertor target. Furthermore, as a function of

R

D

, there is a decrease in target temperature and an increase in the distance at which the radiation front detaches from the target. These simulations cover scenarios in WEST and TCV with different levels of confinement, divertor closure, impurity concentration, and input power. The physical rationale underlying the above definition of

R

D

is that when the divertor radiated power is comparable to the conductive heat flux, there will be a lack of energy reaching the target. Consequently, the radiation front detaches some distance from the divertor target.

R

D

can thus be a good indicator for transitions to and from the detachment state. By monitoring

R

D

, it becomes easier to maintain the heat flux deposition at the target at a manageable level. The evaluation of

R

D

requires diagnostic measurement of downstream SOL radiation and upstream temperature which is feasible in tokamak devices. The robustness of this figure of merit is evaluated through realistic time-dependent numerical simulations for the WEST tokamak, as well as experimental data from WEST, TCV, and JT-60U cases. The results show that

R

D

is capable of capturing the evolution of divertor plasma states, despite the different discharges and machines, suggesting that

R

D

can serve as a valuable control variable for real-time experimental divertor detachment control.
Design of a Robotic 3D Printing System
Authors: Pollák M , Kočiško M , Török J 
Published: August 2024

Abstract
Additive manufacturing enables the production of complex shapes with a large degree of freedom compared to conventional manufacturing techniques such as injection molding, thermoforming or pressing. In particular, the creation of moving parts, complex structures and large-scale printing remains underexplored and research is constantly expanding. Due to design limitations related to the construction of currently available printers, 3D printing technology is increasingly being combined with robotics. Using a robot to 3D print products eliminates the need to design complex printer structures, which ultimately should simplify the process of manufacturing large-scale products and shorten the time required for preparation and production. The paper deals with the description of the designed 3D printing system and the procedure of the steps of creating a robotic simulation model with the generation of a control program for the FDM 3D printing process by an industrial robot.
Affordance-informed Robotic Manipulation via Intelligent Action Library
Authors: Sheng G , Zhiyang L , Ruiteng Z , Lei Z , Chengran Y , Zhengshen Z , Ang M H 
Published: August 2024

Abstract
In the realm of conventional affordance detection, the primary objective is to provide insights into the potential uses of objects. However, a significant limitation remains as these conventional methods merely treat affordance detection as a semantic segmentation task, disregarding the crucial aspect of interpreting affordances for actions that can be performed by manipulator. To address this critical gap, we present a novel pipeline incorporating the Intelligent Action Library (IAL) concept. This framework enables affordance interpretation for various manipulation tasks, allowing robots to be taught and guided on how to execute specific actions based on the detected affordances and human-robot interaction. Through real-world experiments, we have demonstrated the ingenuity and dependability of our pipeline, effectively bridging the gap between affordance detection and manipulation task planning and execution. The integration of IAL facilitates a seamless connection between understanding affordances and empowering robots to perform tasks with precision and efficiency. The demo link is available to the public: https://youtu.be/_oBAer2Vl8k
Analytical Study of Barrier-free Door Closer Guide Rail System based on Slider-Crank Mechanism
Authors: Leong Man-Yee , Tan Alfred C.H. 
Published: August 2024

Abstract
One of the most important elements of barrier-free design is the door entrance system, particularly door closers. Door closers ensure that doors are easy to operate and do not pose any physical barriers to users. However, existing electro-mechanical door closers are relatively heavy, costly and have reliability issues in cases of power outages. Purely mechanical door closers, such as cam action with guide rail and rack-and-pinion with scissors arm, offer a more affordable option due to simpler design and fewer components used. Static forces and torque with geometrical constraints of the door closer guide rail system are considered in deriving the mathematical expressions of a door closer guide rail system using similar approaches as slider-crank mechanism. The formulation considers the effects of pinion torque of a door closer, installation inputs as design parameters, door angle and efficiency. The mathematical model and experimental results show close agreement. The contribution of this paper is that it demonstrates the underlying physics of the door closer guide rail system, thereby aiding in understanding the door behaviour. Additionally, the model can predict the behaviour of the system under different operating conditions, which can be useful for design and optimization purposes. More importantly, this model can be utilised to identify the most effective strategies in reducing opening forces on doors thereby providing design insights to barrier-free application in the future.
Thermal management of a battery pack using fin-embedded phase change material
Authors: Acharya S , Anand C 
Published: August 2024

Abstract
The present study focuses on the numerical investigation of heat transfer from a battery cell surrounded by phase change material (PCM) with longitudinal fins embedded in it. Three-dimensional transient heat conduction equation is solved numerically in the battery domain, whereas the solidification-melting model adopting Enthalpy-Porosity approach is solved in PCM to obtain liquid fraction and temperature distribution. PCM with 16 fins was found to be quite effective in reducing the battery surface temperature compared to 12, 8, and 4 fins. However, the effectiveness of 16 fins is observed up to 1500 sec till the PCM completely melts into liquid. A maximum reduction of 25 K has been achieved at 1500 sec by adding 16 fins to PCM. Beyond 1500 sec, the temperature rises sharply, exceeding all other cases at 2200 sec. Fins play an essential role in augmenting heat transfer, which benefits in achieving the phase change process in less time to restrict the temperature rise; however, at the same time, when the phase change process completes, fins become detrimental to the system since the temperature of the battery starts rising sharply.
A combined algorithm of potential game and particle swarm optimization for multi-user edge computing task offloading
Authors: Cen Jiahuan , Zhang Zhisheng , Dai Min , Xia Zhijie , Wen Haiying 
Published: August 2024

Abstract
For the scenario of edge computing tasks’ offloading between multi-user and multi-server, the number of offloading strategies increases exponentially with the number of users which makes it difficult to find the optimal solution through brute force search. The task offloading model for this scenario is established, and a combined algorithm using potential game method to avoid the premature convergence of the particle swarm optimization is proposed in this paper. The simulation results have shown the proposed algorithm outcomes have lower system cost and better quality of service.
Influence of tunnel cone angle and lip deflection on the performance of coaxial twin propeller
Authors: Du Kaichao , Shi Yongkang , Li Ke 
Published: August 2024

Abstract
To investigate the influence of the culvert cone angle and the angle of the mouth on the aerodynamic performance of the culvert coaxial twin rotor and its mechanism, the quasi-steady numerical simulation of the flow field of the culvert coaxial twin rotor under a hovering state was carried out based on the Reynolds mean Navier-Stokes (RANS) equation and the multiple reference coordinate system method (MRF). The influence of cone angle from -6° to 9° and lip deflection angle from -20° to 30° on the aerodynamic performance of coaxial double-rotors with ducted passages is analyzed. The results show that the contractile culvert can generate a large gain lift force, which is conducive to improving the aerodynamic efficiency of the system. The inward deflection of the lip obstructs the flow of air into the culvert, which will worsen the local aerodynamic environment and lead to serious air separation, increasing the power consumption of the system. However, the structure of the outward deflection of the lip (open culvert) better complies with the flow trend of air, helps to reduce aerodynamic interference, and improves the additional lift of the culvert, which is beneficial to improving the aerodynamic performance of the system.
Vibration characteristics analysis and structural optimization of bio-organic fertilizer mixer based on finite element method
Authors: He Hualong , Geni Mamtimin , Tohti Gulbahar 
Published: August 2024

Abstract
In order to solve the waste produced by grape planting and cattle and sheep breeding in the Turpan area, this paper puts forward an organic liquid fertilizer mixer, and analyzes the vibration characteristics of the main structure-mixing barrel and auger. The finite element model of the mixer structure is established by Ansys, and the modal analysis is carried out in combination with the actual application. The analysis structure shows that the minimum natural frequency of the mixer barrel is 51.993 Hz, the minimum natural frequency of the auger is 12.601 Hz, in which the natural frequency of the auger is less than its working frequency of 48.5 Hz, and there is resonance risk. To improve this problem, the structure of the mixing auger is optimized, the length of the auger is reduced, and the pipe thickness and diameter are increased. The improved modal analysis shows that the minimum natural frequency of the auger is 50.371 Hz, which avoids the working frequency and will not cause resonance.
The supporting structure strength analysis of indexing stamping machine for manufacturing thin-walled inverting steel tubes
Authors: Zhu Zijun , Cai Shenghang , Si Gaofeng , Yu Jiaxin , Zhu Hangtian , Zheng Yuqing 
Published: August 2024

Abstract
Due to the occurrence of cracks in thin-walled inverting steel tubes during the inverting process leading to fractures, thereby failing to achieve the desired energy absorption effect, they were often manufactured by interstitial stamping process with the manual rotation of thin-walled tubes to reduce stress concentration points, which is not conducive to mass production. Therefore it proposes a new design scheme of the indexing stamping machine for mass production of thin-walled inverting tubes. And the tube supporting structure of the indexing stamping machine will undergo shear stress and axial stress during manufacturing operation. To ensure that the machine can operate properly, ANSYS software is employed to conduct strength and stability analysis for the supporting structure. The calculation results indicate that the main supporting structure can meet the strength requirements of the thin-walled inverting tube forming machine. These study findings provide some references for optimizing the structure design for indexing stamping machines.
Optimization of sensor mounting position and pose in rotary kiln belt center measurement
Authors: Deng Yu , Luo Changliang 
Published: August 2024

Abstract
To solve the problem that the measurement accuracy of the center of the wheel belt decreases during the adjustment of the center axis of the rotary kiln, a method of sensor installation position optimization based on dynamic simulation analysis and a simple small model is proposed and implemented in this paper. In this method, the coordinates of the laser points on the surface of the belt are obtained by using the sensor laser beam, and then the center position of the belt is obtained by fitting the coordinates of 6 laser points on the surface of the belt. Then V-rep dynamic simulation software is used to analyze the coordinates of the center position of the wheel under different sensor installation positions to find the sensor installation positions closest to the actual center of the wheel. Finally, the simulation results are verified by a simple small model. The experimental results show that this method can reduce the influence of belt deformation on the measurement of the center of the belt and find the most suitable sensor installation position. Taking the wheel with an ellipticity of 0.16% as an example, under the optimized sensor orientation, the error of the Y direction of the center of the wheel is 0.4 mm, and the error of the Z direction of the center of the wheel is 0.73 mm. By this method, the center accuracy of the existing measuring wheel is optimized from about 2 mm to less than 1 mm.
Simulation analysis of CFD of composite pressure-resistant vessel pressure resistance and uplift process
Authors: Feng Qi , Su Zhen , Sheng Li , Jia Di 
Published: August 2024

Abstract
A pressure-resistant vessel is the core equipment of deep-diving equipment, which needs to have good pressure-resistant performance. In this paper, due to the problem that it is difficult to monitor the pressure-resistant vessel in the real diving process, we design a lightweight carbon fibre pressure-resistant vessel, construct a finite element model of the pressure-resistant vessel in deep diving, and carry out simulation and analysis, so as to provide a simulation test method for the real diving work. Specifically, the pressure-resistant vessel is subjected to finite element analysis at typical depths, and the floating process of the pressure-resistant vessel under different working conditions is simulated by using Computational Fluid Dynamics (CFD) simulation and orthogonal tests. Comparison of the CFD simulation results with the orthogonal test results proves that the selected pressure-resistant vessel can meet the working requirements under different working conditions.
Hydrodynamic performance analysis of dual vertical axis turbine
Authors: Wu Aiping , Ma Tianli , Wang Shiming , Ding Chengling , Liu Boting 
Published: August 2024

Abstract
This article adopts a biomimetic approach and uses the profile of the fastest sailfish in the ocean as the airfoil profile of a water turbine. Integrating centrifugal and axial flow turbines on one drive shaft can effectively integrate wave and current energy (wave current integration). The wake of a centrifugal turbine flows into the flow field of an axial flow turbine, and based on the Kantar effect, the energy harvesting coefficient of the axial flow turbine is improved. The five blades of the axial flow turbine and centrifugal turbine are subjected to uneven forces, resulting in torsional and radial forces on the drive shaft, causing periodic series motion of the turbine and reducing the overall lifespan of the machine.
Numerical simulation study on the cold thread rolling forming of Ti-6Al-4V alloy fasteners with external threads and their defects.
Authors: Zhou Qiang , Zhang Jiawei 
Published: August 2024

Abstract
A three-dimensional numerical finite element model for cold rolling forming of external threads on Ti-6Al-4V alloy fasteners for aerospace applications was established using DEFORM-3D. This model was employed to investigate the characteristics of the cold rolling forming process and analyze the defects associated with the rolling operation. The stability of the ratio between torque and tangential load at the radius value of the rolling wheel (72.5) validates the accuracy of the model. The research results indicate that due to the unevenness of the extrusion force, the metal flow velocity is higher adjacent to the tooth-shaped surface compared to the central position. This causes the metal on both sides to accumulate and squeeze towards the middle position at the tooth top, ultimately resulting in tooth top folding defects.
Research and application of self-diagnosis and automatic intervention functions for turbine regulating valve malfunctions in nuclear power plants
Authors: Gan Changxian , Jiang Xiaolong , Li Min , Li Huahuan , Li Xianhai , Li Jiaxuan 
Published: August 2024

Abstract
The inlet regulating valve of the turbine is very important to the control of the turbine. If the control is abnormal, it will create some uncontrollable safety risks, which may cause the turbine to trip, even to over-speed. The study of the structure and control mode of the turbine regulating valve shows some defects in the design of the turbine regulating valve in a nuclear power plant. In this paper, through the analysis of the fault mode, the method of fault self-diagnosis is studied, verified, and improved so that it has perfect self-diagnosis and intervention means, improves the reliability of turbine valve control, and eliminates the hidden danger of tripping.
Rated flow coefficient of geometric compensation control valve
Authors: Li Zhong , Wang Wei , Ming You , Cheng Fengguang , Geng Shengtao , Yu Hongbin , Ye Xiaojie , Xu Tingting , Ni Yulong 
Published: August 2024

Abstract
Aiming at the large design error of the rated flow coefficient of existing control valves, it was difficult to meet the requirements of the equipment system. This study adopts the principle of infinite approximation to the existing flow coefficient calculation equation for geometric shape correction compensation, based on which the rated flow coefficient design method was proposed, and simulation and test verification were carried out. The results show that according to the design method, the rated flow coefficient of the control valve can be accurately designed. The variation rule of the simulated value and the test value under the two kinds of spool inner parts is consistent, and the maximum error is not more than 10%, which meets the requirements of industrial standards. The experiment verifies the accuracy and applicability of the design method.
Fault diagnosis and analysis of automobile capacitive touch display false triggering
Authors: Liu Tingting , Mao Ling , Chen Xiaoling , Li Zhifeng , Nie Jing 
Published: August 2024

Abstract
Nowadays, automobile handling is mainly concentrated in the central control display. The use of high-definition and large-size capacitive touch displays has become the mainstream trend. Driving information and entertainment information are displayed on it, and the operation of the electronic control function of the car is generally realized by touching the touch panel of the central control display. As the integration of the central control display becomes higher, the fault of the display needs to be paid more attention to. The common faults include display faults and touch faults. The display fault will affect the display of vehicle information, and the driver cannot obtain vehicle status information; the touch fault will affect the car operation and can not carry out human-machine interaction. Therefore, once the central control display fails, it will affect the safety driving of the car. This paper studies the false triggering failure which is a kind of touch fault of the vehicle’s 9-inch capacitive touch display. Firstly, we test the parasitic capacitance of faulty parts and repeat the touch failure. After testing and analyzing, it has been found that the mechanical structure design of the display and the air gap bonding process can change the value of parasitic capacitance which leads to false triggering. This paper proposes solutions to solve this failure which are changing the wideness of glue to avoid glue overflow and strengthening size management to improve the spacing between the touch panel and the TFT display screen. After the implementation of the solutions, the false triggering failure no longer occurs, which proves that the solutions are effective and feasible.
Fuzzy PID control based on genetic algorithm optimization inverted pendulum system
Authors: Li Tiehong , Li Jin , Jiang Junbang , Liu Xinyu 
Published: August 2024

Abstract
For the first-order inverted pendulum control system, a fuzzy PID control system based on the optimization of the genetic algorithm is proposed. The traditional genetic algorithm has the problem that the difference in the fuzzy subset parameter leads to a decrease in the interpretative ability of the fuzzy system. The main problem of the current genetic algorithm is the complexity of the computation and the low efficiency. Based on this problem, this paper proposes an improved genetic algorithm, i.e., it adopts the variance operator and adaptive change of the variance index and elite retention strategy, which solves the premature and local convergence problems of the standard genetic algorithm, in order to optimize the fuzzy system. The experimental results show that the optimized genetic algorithm gives full play to the advantages of fuzzy control in terms of interpretability and robustness, and at the same time guarantees the prediction accuracy, which provides a new research idea in the field of artificial intelligence control.