bluuebunny/crossref_metadata_2025_split huggingface dataset:
Cause analysis of stamping cracking and concealed cracking of tailgate inner plate
Authors: Liu Xueli , Huang Geng , Zhu Haoyu , Li Liejun 
Published: December 2022

Abstract
With the development of automobiles toward lightweight and comfort, the production of auto parts has higher and higher requirements for stamping materials and parts forming quality. During the stamping and manufacturing process of the passenger car tailgate inner plate, the tailgate inner plate has many cracks, concealed cracks, and other defects. In this paper, the fracture morphology of the defect section was observed, and the composition and mechanical properties were measured. At the same time, the production process of the steel plate and the working condition of the stamping die were analyzed. The results show that the cracking and concealed cracking defects of stamping sheets are mainly caused by the inclusion of die and sheet. Through the adjustment of the plate production process and mold, the cracking and concealed cracking defects disappeared. This work also provides a reference for the solution to stamping cracking defects in the future.
Analysis of stamping cracking of laser tailor-welded IF steel door inner plate
Authors: Xian Lingbiao , Wu Ke , Li Liejun 
Published: December 2022

Abstract
The parts produced by laser tailor welded steel plates are more and more widely used in automobiles, due to their advantages of high strength, low weight, and low comprehensive cost. However, the welding seam of the laser tailor welded steel plate is prone to cracking during the stamping process. Based on solving the problem of stamping cracking of the IF steel door inner plate supplied by our company, the mechanical properties and friction coefficient were tested on the base metal. In addition, the cupping experiment was carried out on the weld seam of the tailor-welded blanks, and the hardness and microstructure of the weld seam were also tested and analyzed. The results showed that the lap height difference was the main reason for cracking. By optimizing the height difference of tailor-welded blanks, the incidence of cracking was greatly reduced.
Cause Analysis of Tube Burst of the Condenser in a Power Plant
Authors: Xu Yang 
Published: December 2022

Abstract
A tube burst accident of the condenser is found in a power plant during operation. The causes of tube bursts are analyzed using macroscopic observation, chemical composition analysis, metallographic examination, scanning electron microscopy, and energy spectrum. The results show that the perforation of the condenser tube originates from the inner wall, and there are scour pits. There are corrosion products in the pits, and the content of the Zn element decreases significantly compared with the matrix. The corrosion should be dezincification corrosion accompanied by erosion corrosion. After the long-term operation of the condenser pipe, dezincification corrosion is still unavoidable. Pipes in different parts have been corroded and perforated, but the degree of corrosion is different. Therefore, it is suggested to replace and upgrade the condenser tube as a whole at the appropriate time.
Intercritical annealing treatment of PHS2000 and study of its microstructure and properties
Authors: Liu Lang , Li Liejun , Luo Zhichao , Peng Zhengwu , Gao Jixiang , Ren Jianping 
Published: December 2022

Abstract
Dual-phase steel (also known as DP steel) is the most widely used ultra-high-strength steel in automobile covering parts and structural parts. Since the concept of automotive lightweight has been put forward and deepened, the development of higher strength grade DP steel and the study of its microstructure and properties are of great significance. In this paper, the Gleeble-3800 thermal simulation machine was used to investigate the phase transition characteristics of the PHS2000. Scanning electron microscopy (SEM) was used to study the evolution of the microstructure under different heat treatment conditions, and the mechanical properties of dual phase microstructure under different conditions were analyzed. The results show that the microstructure of PHS2000 remains martensite with a high volume fraction after intercritical annealing and becomes full martensite after a long time of holding. At the same time, the tensile strength increases, and the plasticity decreases with the increase of the intercritical annealing temperature.
Design of Composite Joint with Precast Bolted Shear Connectors for The Fabricated Structure
Authors: Yang Zhishuo , Chen Mingxia , Chen Feixin , Chen Guocan , Dong Zuorong , Zhong Yiman 
Published: December 2022

Abstract
Because of the serious impact on the seismic performance, the joint connection form becomes a critical problem in the prefabricated building. Built on the dry connection, this paper proposes a detachable and recyclable bolt-steel plate connection design for the fabricated structure. Compared to the cast-in-situ method, the biggest advantage of the proposed design scheme lies in convenient construction. The construction process shows that the joint devices both are detachable and recyclable. Adopting a supported beam, the proposed form is simulated with the finite element method (FEM). The deformation results verify the effectiveness of the proposed connection design. The work provides a novel idea for further test research on the fabricated structure.
Research on the thermal management system of battery for electric vehicles
Authors: Wang Yuzhuo 
Published: December 2022

Abstract
Battery life is one of the most significant indicators of the performance of electric vehicles. The battery life of electric vehicles plays a significant role in the overall performance of the vehicle. Temperature difference and maximum battery temperature are the two major factors affecting battery life, so a system that monitors and regulates battery temperature should be advanced and reasonable. In this paper, we discuss the most commonly used thermal management systems, including air cooling systems, liquid cooling systems, PCM-based cooling systems, and hybrid systems, as well as the newest thermal management systems that have been developed in recent years. It firstly introduces the physical principles applied to the above cooling systems, then analyzes and compares the thermal values of the experimental objects with the help of mathematical models and images, and finally draws conclusions based on the comparison results and briefly. In summary, various thermal management systems have their advantages and disadvantages. For example, air cooling is cost-effective and simple to operate, but it cannot be used for high-power applications due to its inability to dissipate heat. The liquid cooling system is more efficient at dissipating heat than the air cooling system, but its disadvantage is its increased weight and volume. Currently, PCM-based thermal management systems offer the most potential, but they have not been widely used due to their high cost and complexity; the hybrid system can integrate the advantages of various systems, but the difficulty of structural design will be much greater.
Design and implementation of Visual Epigynous Machine on Robotic Sorting
Authors: Zeng Lingchao , Cao Yuhua , Xiao Chenjun , Zhong Xiaohua , Wei Shangming , Zeng Guanlin 
Published: December 2022

Abstract
Robotic assembly is an important process to replace manual picking in industrial smart manufacturing. One of the important steps in assembly is robotics grasping and sorting of the workpiece. In this paper, a lightweight visual epigynous system was designed to address sorting workpieces with high efficiency, portability, and accuracy. The software of the system was divided into a vision calculation module (VCM), an ethernet communication module, a system control module, and a real-time display module. VCM is responsible for obtaining the information of workpieces, which includes segmenting the images captured by the webcam sequentially and recognizing the digit, and calculating the angle by algorithms of AKAZE feathers matching with and orientation estimation for vector comparison. The proposed method in VCM performs best in estimating the orientation of the workpiece through the comparison of different template matching algorithms. The industrial field experiments indicated that the robot could satisfy the requirement of visual sorting. This system provides a practical and robust solution for industrial workpiece sorting applications.
Numerical simulation and analysis of flow field in directional solidification equipment
Authors: Cheng Zhang Zhi , Sun Hui , Wen Ning , Liu Tao 
Published: December 2022

Abstract
Directional solidification equipment is an efficient purification tool. In this paper, the geometric model was established based on the equipment, and the numerical simulation of the flow field in equipment was realized through the RNG turbulence model, flow volume function model, and the multiple reference system method. In order to improve the fluid velocity, turbulent kinetic energy, and uniform distribution of circulating flow in the flow field, the effects of different crucible structures, process parameters, and structure of rotator on the flow field were analyzed. The research results show that the round bottom crucible has a faster flow velocity in front of the wall, and the flow velocity distribution is uniform. When the rotator is located in the center of the flow field, flow velocity and turbulent kinetic energy are distributed more evenly. Controlling the rotational speed to reduce the air entering the liquid phase is conducive to preventing solidification from being oxidized. Considering the thickness of the solidified layer, increasing the blade length can help increase the fluid velocity.
6σ robust and optimal design of micro-motion platform based on kriging model
Authors: Wu Jianjun , Cai Wei 
Published: December 2022

Abstract
The two performance indexes of output displacement and inherent frequency are closely related to the design variables of the micro-motion platform. To address the problem that the design variables have certain fluctuations and the high nonlinearity between the design variables and the performance of the micro-motion platform, a multi-objective robust optimization method with high computational efficiency and high fitting accuracy is proposed. Based on the kriging agent model, the high-precision approximate functions of the key design variables with the output displacement and the inherent frequency are established by the Latin hypercube experimental design, respectively. With the maximum stress as the constraint, Monte Carlo simulation, 6σ robust design concept, and nondominated sorting genetic algorithm II (NSGA-II) multi-objective genetic algorithm are integrated to optimize the structure of the micro-motorized platform. The results show that compared with the traditional deterministic optimization method, the 6σ robust design considering parameter uncertainty effectively reduces the fluctuation of the performance of the micromotion platform and improves the resistance of the platform performance to disturbance under uncertainty.
Bending test and simulation of carbon fiber aluminum honeycomb sandwich structure
Authors: Rong Jian , Lv Haiqing , Li Jing , Chen Xuesheng , Zhang Youyi 
Published: December 2022

Abstract
According to the bending moment characteristics of carbon fiber aluminum honeycomb sandwich structure for the solar wing in use, this paper simulates and analyzes the large-scale bending samples and tests the bending samples at room temperature, 150 °C, and -150°C. The test results show that the bending performance is not different between low-temperature environment and room temperature environment, but the stiffness and strength at high temperature are reduced by 54.9% and 50%, respectively, compared with room temperature. Compared with the room temperature test results, the simulation results are about 10%, which can roughly reflect the bending performance characteristics of sandwich structures.
Preparation and property analysis of polyether polyol two-component rubber repair material
Authors: Nie Pengfei , Liu Zhiqiang , Liu Zhiyuan 
Published: December 2022

Abstract
In order to solve the problem that the damage of rubber material cannot be repaired quickly and conveniently, this paper studies a repairing agent that is easy to use and repairs quickly.The modifier is composed of A and B components. The A component can be obtained by blending polyether polyol 330N, chain extender, diethylene glycol, 330NH18 slurry, 330N acetylene black slurry, dioctyl phthalate DOP, catalyst, antioxidant, silane coupling agent and defoaming agent at room temperature and vacuum.The mixture of polyether polyol GE220, 220H18 and dioctyl phthalate DOP, MDI-3051 and MDI-100LL at room temperature and vacuum was used to obtain component B.When using, mix A and B components by 1:0.7-1.3.The repair agent is simple to prepare and easy to use, and can be used for repairing any type of rubber damage. It is not limited by space and shape of rubber parts. It can be formed in 1 minute, have strength in 8 minutes, reach 80% strength in 2 hours and put into use.
Research on path planning and scheduling of multi AGVs based on a two-way dual path map
Authors: Xie Sheng , Ling Caofu , Wu Hao 
Published: December 2022

Abstract
With the development of intralogistics technology in factories, multi-AGV scheduling is still an important problem that needs to be solved by the control system. Aiming at the path planning and scheduling problem of automated guided vehicle (AGV) in the factory loading and unloading work, this paper designs a two-way dual path map construction method suitable for the factory, introduces a two-way different weight map construction method suitable for the right path, and uses “simulated road conditions” algorithm to calculate the shorter path, takes the shortest driving distance as the optimization goal to carry out the task scheduling analyzed possible conflicts and gives corresponding solutions. To verify the correctness of the map construction and algorithm, the multi-AGV simulation is carried out by using a robot operating system (ROS). The results show that the proposed method can realize the stable operation of multi-AGV in the factory environment without conflict and collision.
Detection of Prohibited Items Based upon X-ray Images and Improved YOLOv7
Authors: Yuan Jinhao , Zhang Nanfeng , Xie Yuexuan , Gao Xiangdong 
Published: December 2022

Abstract
Safety inspection nowadays is an effective means to safeguard public security, which mainly relies on professional security personnel to carry out inspections. In order to detect automatically contraband in X-ray images, a new prohibited item detection method on the strength of the modified YOLOv7 algorithm is present. The spatial attention constructed by large kernel attention was introduced into the lower layer of the YOLOv7 backbone network to extract the remote dependence information and texture information of the lower layer feature map. The proposed method was tested on public X-ray data set for a safety inspection, and the result showed that the improved means can advance the detection accuracy of the model.
Scientific Opportunities at the ARIEL Electron Linac
Authors: Bernauer Jan , Corliss Ross , Gardner Susan , Hasinoff Michael , Kanungo Rituparna , Martin Jeffery , Milner Richard , Pachal Katherine , Suda Toshimi , Yen Stanley 
Published: December 2022

AbstractThis paper gives an overview of the scientific opportunities at the ARIEL electron accelerator identified in open discussion at the workshop, including applications in hadron structure, astrophysical processes, tests of quantum electrodynamics, dark matter and other BSM physics, and material science.
A new light particle is being born
Authors: Krasznahorkay A.J. , Begala M. , Csatlós M. , Csige L. , Gulyás J. , Krakó A. , Krasznahorkay A. , Nyakó B.M. , Rajta I. , Sas N.J. , Timár J. , Vajda I. 
Published: December 2022

AbstractA few years ago we observed anomalous electron-positron angular correlations for the 18.15 MeV M1 transition of8Be. This was interpreted as the creation and decay of an intermediate bosonic particle with a mass ofm0c2=16.70±0.35(stat )±0.5(sys) MeV, which is now called X17. The possible relation of the X17 boson to the dark matter problem triggered an enormous interest in the wider physics community. We also observed a similar anomaly in4He, which could be described also by the creation and subsequent decay of the same X17 particle. Very recently, the11B proton capture reaction was used for exciting the 17.2 MeV broad (Γ=1.15 MeV) resonance in12C and studying their internal pair creation decay. Anomalies were observed in the angular correlation of the electron-positron pairs, which together with the8Be and4He data provides kinematic evidence for the X17 particle and supports their vector boson and fifth force explanation.
The Effectiveness of Implementation Learning Media Based on Augmented Reality in Elementary School in Improving Critical Thinking Skills in Solar System Course
Authors: Zuniari N I , Ridlo Z R , Wahyuni S , Ulfa E M , Dharmawan M K S 
Published: December 2022

Abstract
This research aims to explore students’ critical thinking skills in Augmented reality-based learning media implementation on solar system lessons in elementary school. Critical thinking skills at the elementary school level are still relatively low due to the lack of application of learning media that support the improvement of critical thinking skills. Learning media is a very important part of learning. Research design compares modern classes (experimental classes) with control classes. Teaching using augmented reality-based learning media is carried out in experimental classrooms, while teaching is directly carried out in the control class. As a researcher using research and development methods with a qualitative approach to quasi-experimental research methods (pseudo-experiments) with pure experimental design, namely Pre-test Post-test Control Design. It can be known that the value of significance in this study is 39.5% or 0.395 to pre-test. The average pre-test value obtained for the control class was 46.60 with a standard deviation of 12.32 while the average pre-test value for the experimental class was 48.57 with a standard deviation of 11.20. The collection of post-test in the control class was 72.3214 with a standard deviation of 10.45291 while the average value of the experimental class was 90.1429 with a standard deviation of 6.89452. Based on the t-test it can be known that in the pre-test values of the two classes there is no significant or homogeneous difference. After being given the treatment of augmented reality learning media in solar system materials, the post-test values of both classes experienced a significant difference with a Sig.2-Tailed value of 0.000. The results of this study that the learning medium of Augmented Reality has an impact on students' critical thinking skills.
Characteristics of The PANI Thin Film Fabricated by The Electrodeposition Method and its Performance as an Alcohol Gas Sensor
Authors: Putri N P , Komariyah A Y , Sunarti T , Suaebah E , Rohmawati L 
Published: December 2022

AbstractIn this study, PANI thin film has been fabricated and applied as an active ingredient for alcohol sensors with different types and concentrations of alcohol. The method used is electrodeposition potentiostat with ITO as the working electrode. The PANI thin film was successfully synthesized at a constant potential of -0.4 V to +0.8 V at a scan rate of 100 mV/s. The method of determining the sensor's sensitivity is done by measuring the change in resistance of the PANI thin film using a Four Point Probe (FPP). Morphological results using SEM from PANI showed the shape of nanoparticles with an interconnected-sponge structure with a grain size of 35.28 nm. The results of sensor sensing measurements based on PANI for variations in concentration and different types of alcohol show that the sensor response to methanol gas is more significant when compared to ethanol and butanol gases. It has been proven that the PANI thin film can detect alcohol at small concentrations (5 ppm). The sensitivity value of the sensor indicates that the higher the alcohol concentration used, the higher the sensitivity.
Controlling Electronic Properties of FeCl2 Monolayer under LDA+U Approach
Authors: Prayitno T B , Nuryasin B , Budi E , Fahdiran R 
Published: December 2022

Abstract
The electronic properties of FeCl2 monolayer were inspected by using the LDA+U approach and including the spin-orbit interaction. By observing the band dispersion, it was shown that the metallic state changes to the insulating state by increasing the Coulomb repulsion. Moreover, the band gap and magnetic moment of Fe atom also increase as the Coulomb repulsion increases. For the magnetic state, it was also found that the ferromagnetic ground state was shifted to the antiferromagnetic ground state as tuning the Coulomb repulsion. It can be deduced that combining the spin-orbit interaction and Coulomb repulsion controls the electronic properties of FeCl2 monolayer.
Phase Formation, Structural, and Microstructural Characterizations of Ilmenite FeTiO3Nanopowder Prepared from Liquid-Mixing Method
Authors: Ermawati F U 
Published: December 2022

AbstractIlmenite FeTiO3is a wide-band gap antiferromagnetic semiconductor material and has very potential for applications in spintronic devices. Miniaturization of microelectronics and communication systems has become a necessity. Thus a material that can achieve high antiferromagnetic semiconductor properties in a small volume is therefore favourite. For that reason, particles of the materials must also be in the nanoscale. This paper reports the synthesis of nano-sized Ilmenite FeTiO3powder using the liquid-mixing method. Using this method, FeTiO3crystalline phase was initially formed at a temperature as low as 340 °C. The phase formation was analyzed from room temperature to 600 °C based on TGA/DTA, FTIR and XRD data. Rietveld's analysis stated that 84 % molar FeTiO3phase was formed at 340 °C, and the rest was TiO2rutile. By using the Scherrer method, the average crystallite size was calculated to be 38-43 nm, while the TEM data provides grain sizes of 20-40 nm.
The Physical Properties of Rocks in Blawan-Ijen Sempol District Bondowoso Regency
Authors: Astutik S , Nisa S L 
Published: December 2022

Abstract
Physical properties are the property of a rock after being tasted without damaging the rock. This research aims to describe the physical properties of rocks in Blawan-Ijen, including rock texture, rock density and rock porosity. The method of collecting data is carried out directly, namely conducting direct research in the field and indirect research by conducting library research. The physical properties of the rocks in Blawan-Ijen have a smooth and rough texture, holocrystalline, light and dark colors, and compact. The density value is relatively high, so it has a fairly high density and resistance. In contrast, the porosity value of the rocks in Blawan-Ijen has three categories: poor porosity, very poor porosity, and high porosity. The texture of the rocks in Blawan-Ijen is smooth, holocrystalline, has small cavities and dark in color.
Research on FPGA-based Sine Wave Transmitter
Authors: Wang Junkai , Gao Junxia , Wang Xuhong 
Published: December 2022

Abstract
This paper touches on a sine wave transmitting mode being designed applicable to multichannel high-power electromagnetic transmitters, well explaining the design scheme and working principle of each module. With FPGA as the core to build the hardware platform and DSP as a bridge to the cooperation between the upper computer and the FPGA lower computer, this very mode amplifies the MSK signal provided by the external interface with power and makes it featured high-power, high-energy efficiency as well as frequency accuracy, realizing the transmitting current as 0.01Hz~300Hz standard sine wave and MSK modulated wave output.