bluuebunny/crossref_metadata_2025_split huggingface dataset:
Evaluation of foam inducing and foam stabilizing properties of different kinds of concrete air entraining agents
Authors: Zhong Lina , Wang Zhaopeng , Fang Yunhui 
Published: May 2021

Abstract
Water solution method, saturated calcium hydroxide solution method and cement solution method were used to evaluate the foam inducing and foam stabilizing properties of seven different types of air entraining agents. The evaluation results of the three methods were compared with the initial air content of concrete, the air content in 1h and the change rate of air content in 1h. The results show that the corresponding relationship between the test results of water solution method and concrete is the best.
Advances on the biosensor based on nanotechnology
Authors: Wei Yanling 
Published: May 2021

Abstract
Biosensor is a detection instrument which is sensitive to biological substances and convert the signal of biological activity expression into electrical signal in order to determine the characteristic of samples. Besides, the development of nanoparticles greatly promoted the development and progress of biosensors. Biosensors are promising to be widely used in many fields such as food, pharmacy, chemical industry, clinical examination, biomedicine, environmental monitoring, they have gradually become a research focus on recent years hence. This paper presents a review of worldwide researches, particularly summarized and discussed in composition materials, classification, and application areas of biosensors as well. It is expected that this review can provide some help and references for further research on biosensors.
Mechanical property analysis of stainless steel bolt
Authors: Ren Facai , Tang Xiaoying , Si Jun , Xu Jinsha 
Published: May 2021

Abstract
Tensile property test, hardness test, chemical composition test, metallographic analysis and solution treatment analysis were carried out for stainless steel bolt. The results show that the Cr content is slightly lower than the requirements of relevant standards, and the tensile properties and hardness meet the requirements. Comparing the microstructure of the original sample with that of the sample after solution treatment, it can be seen that there are a lot of acicular martensite phase in the original sample, and there are a lot of carbide precipitation at the grain boundary, but no carbide precipitation is found at the grain boundary of the sample after solution treatment.
Model Design and Processing of Bionic Non-smooth Surface of Fish-scale Concavity
Authors: Hou Jinming , Shi Guangfeng , Xia Mingqiang , Li Liang , Li Hongda 
Published: May 2021

Abstract
Based on the basic methods of engineering bionics research, this paper is inspired by the desert surface morphology on the basis of the existing drag reduction microstructures, and extracts the characteristics of ecological surface drag reduction information, thereby establishing a fish-scale pit model. This paper designs and builds a diamond stamping platform to stamp and stamp copper sheets, and proposes a method that can effectively process the non-smooth surface of the fish-scale pits of the required size.
Study on Application of Model Based 3D Process Planning System
Authors: Yin Haijun , Qiao Xinghua , An Weixing 
Published: May 2021

Abstract
based on the study on existing status of MBD technology applied in design and manufacturing aspects, this article analyzes the importance of model-based 3D process planning system utilized in manufacturing sector, puts forward a package of MBPP application proposal and describes the application objectives, application structure, implementation process and major functions. The model based MBPP system is developed based on process planning proposal, and has been validated by its application in the development and manufacturing of model X aircraft.
Software fault location technology under terminal embedded component
Authors: Xu Min , Lu XingHua 
Published: May 2021

Abstract
In order to improve the software fault location capability of embedded components of heterogeneous Web server terminals, a software fault location method of embedded components of heterogeneous Web server terminals based on source code fault feature detection is proposed. The original information collection model for software fault detection of embedded components of heterogeneous Web server terminals is constructed, the big data feature quantity of software safety information of embedded components is mined. The spectrum information of software safety information is extracted by adopting a dynamic information fusion method, so as to obtain the fuzzy closeness of software faults. The big data information parameters of embedded component software faults of heterogeneous Web server terminals are adaptively adjusted, and the cross information distribution set of embedded component software faults of heterogeneous Web server terminals is determined. The disturbance of embedded component software faults of heterogeneous Web server terminals is obtained by using the method of limit mining, and the adaptive mining of software faults is realized. Simulation results show that this method is accurate in locating software faults under terminal embedded components, and the software has strong anti-attack ability.
Process Design of Pilot Warm Rolling Mill for Difficult-to-deform Materials Research
Authors: Su Hai-Long , Yang Hong , Li Jian-Ping , Sun Tao 
Published: May 2021

Abstract
Due to the increasing demands for warm rolling research of difficult-to-deform materials, the State Key Laboratory of Rolling and Automation of Northeastern University (NEU-RAL) developed a set of pilot warm rolling mill with its functions including: rolled piece heating online, rolls heating online, hydraulic screwdown, tension control and reversing rolling. The rolls heating uses induction heating mode and the rolled piece heating adopts direct resistance heating way. The warm rolling process is designed based on the characteristics of pilot warm rolling mill. The AZ31 magnesium alloy samples were rolled successfully and demonstrated that warm rolling is an effective method to process difficult-to-deform materials. The new pilot warm rolling mill has been successfully put into use in several research institutes of China, it will contribute further studying on warm rolling characteristics of difficult-to-deform materials.
Effects of thermal-rate treatment and modification of Ce on the microstructure and properties of A356 alloys
Authors: Zhang Shuo , Bo Lin , Wang Lin , Hou Yangbo , Zhao Degang 
Published: May 2021

Abstract
In this study, the effects of thermal-rate treatment (TRT) and modification of Ce on the microstructure and mechanical properties of A356 alloy were investigated. The results showed that the microstructure of A356 alloy was improved after TRT and modification of Ce. The α-Al was refined significantly and the eutectic Si transformed from needle-like shape to granular-like shape. When the content of Ce increased to 0.5%, the grain size of α-Al of A356 alloy began to increase and the dendrites became coarse. When the Ce content was 0.4%, the tensile strength and yield strength of A356 alloy were 183MPa and 124 MPa, respectively. The mechanism of (TRT+Ce) on the grain refinement of α-Al and modification of eutectic Si was discussed.
Point Cloud Based 3D Matching and Identification of Welding Seam Using Genetic Algorithm
Authors: Lou Linlin , Li Zhe , Luo Shiqiang , Yang Changming , Liu Yu 
Published: May 2021

Abstract
Welding seams identification is a challenging task in robotic welding process. In this paper, we present a method for the automatic identification and location of welding seams for robotic welding using handy 3D scanner. The method uses point cloud based local feature matching and continuous feature search algorithm, which aim at achieving an adaptive seam identification process that can work on similar work pieces with different sizes. The results together with the visual verification demonstrate that the proposed algorithms have ability to identify the welding seam from point cloud acquired by handy laser scanner.
Research on Dynamics of Vehicle Height Adjustment for Automobile with Double-Wishbone ECAS
Authors: Wang Hui 
Published: May 2021

Abstract
This paper addresses the problem of dynamics of vehicle height adjustment for automobile with Double-wishbone electronically-controlled air suspension (ECAS) under considering the effects of suspension geometry and kinematics. The model of vehicle height adjustment consists of air spring model and suspension dynamics model. The air spring model was derived by thermodynamic theory for variable-mass gas charge/discharge system. The suspension dynamics model was formulated by kinematics analysis and dynamics modeling of double-wishbone suspension. Then, the influence of suspension geometry and kinematics on the model of vehicle height adjustment was quantitatively analyzed through simulation. Finally, Simulink-Adams co-simulation results show the accuracy of the model.
Study on the problem of unlocking P block of car
Authors: Li Hongxing , Sun Wenfang , Zhang Weizhong , Zhang Jun , Li Hongling 
Published: May 2021

Abstract
In view of the market problem that the P gear of a certain model cannot be unlocked, through a detailed fault tree analysis of various influencing factors, the control mechanism and transmission control software are optimized to improve the vehicle shift performance and provide a reference for solving similar problems in the later stage.
The Characteristics of Debye Effect Magnetic Field Under Acoustic Excitation
Authors: Xu Yujing , Pan Mengchun , Zhang Qi , Chen Dixiang , Liu Zhongyan , Hu Jiafei , Chen Zhuo , Wang Zhenxiong , Wang Ze 
Published: May 2021

Abstract
Debye proposed the generation of electric potential difference under acoustic excitation in electrolyte solution because of ion separation. However, the ion separation can also induce magnetic field, which has always been neglected by researchers. This paper builds a theoretical model of Debye effect magnetic field, and a multi-physics computation method to study the magnetic field. According to the computation results, an acoustic excitation with frequency at 70Hz and amplitude at 0.1m/s can generate magnetic field at the level of one pico-Tesla, which can be detected nowadays.
Inverse kinematics based on backbone curve for a hyper-redundant tensegrity bird-neck robotic mechanism
Authors: Wang Yihang , Li Zhaoqin , He Jingfeng , Li Xin 
Published: May 2021

Abstract
In this paper, we propose a hyper-redundant tensegrity bird-neck robotic mechanism. To study the inverse kinematics of this mechanism, we propose a method with two steps. Firstly, the backbone curve for the bird neck is used to describe the macroscopic shape of the mechanism. Secondly, by coordinating the internal forces of the cables when the bird-neck tensegrity model is in equilibrium, we can get all cable lengths of the bird neck at a certain shape which is the inverse kinematics solution. Simulations are conducted to verify the validity of the proposed inverse kinematics method.
A Segmentation Algorithm of Wear Debris Reflected image Based on Watershed and H-minima Transform for On-Line Visual Ferrograph Analysis
Authors: Wu W , Wei H D , Li B , Lv H W 
Published: May 2021

Abstract
Aiming to solve the problems of identifying the over-brightness and over-dark parts in the reflected light wear debris image, this paper proposed a new OLVF (on-line visual ferrgraph) reflected light wear debris segmentation algorithm. If the wear debris image is bright and dark, the morphological black-hat operation is used to eliminate these interferences. Then the H-minima transform is applied to corrected image local extreme value interference and the threshold is obtain through Otsu algorithm. The watershed algorithm is adopted to separate over-bright and over-dark wear debris. Eventually the morphological dilate corrosion of opening and closing reconstruction is applied to filled holes and connected wear debris profile. On the basis of the above-mentioned method, the OLVF reflected light wear debris are accurate shape and continuous profile in the final result. Compared with other wear debris divide algorithms, the proposed method effectively suppresses the influence of reflected light, and better retain the information of wear debris image. At the same time, the signal-to-noise ratio is 12dB higher than others at the maximum, and the root mean square error is reduced by 0.051 at the maximum.
Servo control and detection system of magnetic levitation pipeline based on FPI bus
Authors: Luo Ruiliang , Wang Ao 
Published: May 2021

Abstract
The growth rate of China’s plastic pipe industry ranks first in the world. In 2018, China’s plastic pipe production broke through the 16 million ton mark. With the growth of China’s economy, the output of plastic pipe still has a large space for increase. However, the detection of pipeline defects has been relatively backward in China. Aiming at the problem of pipeline internal inspection, this paper proposes a magnetic suspension non-contact detection method, and designs a real-time feedback servo control system for the detection system. to improve the efficiency and quality of pipeline inspection, and expand the scope of pipeline inspection in industrial production.
Application of Maximum Entropy Method in Error Statistic of Vertical Launching Device
Authors: Lei Xiaobo , Song Xiangtao , Du Siyuan 
Published: May 2021

Abstract
The installation accuracy of the vertical launcher will have varying degrees of influence on the initial accuracy of the test missile launching. Therefore, it is of great practical significance to study the assembly error characteristics of the launcher. This article will perform ANSYS simulation of the vertical launcher based on the marine force environment, use the maximum entropy method to perform statistical analysis on the extracted simulation error data, and calculate and solve the probability density function and distribution curve of the error data. The analysis results provide guidance for the next step in the accuracy control research of the launcher.
Fatigue Simulation of Railway Car Bogie Frame Based on Multi-body Dynamics and Finite Element Analysis
Authors: Lan Qingqun , Song Fu 
Published: May 2021

Abstract
This paper proposes to combine multi-body dynamics and finite element method to study the fatigue strength and fatigue life of the bogie frame from the perspective of taking the vehicle as a whole. The analysis model established by the multi-body dynamics simulation software SIMPACK, the dangerous positions are determined from FEA software ANSYS, Based on the load-time history and Miner cumulative damage theory, the fatigue strength prediction is carried out using n-soft software, the study shows that the time-load history of each key position obtained by simulating working conditions can predict the life of components more accurately, this method can be applied to the initial stage of product design.
Refined cost control and management methods for high-speed railway signal projects
Authors: Wang Li , Wang Rongsheng , Yuan Zhiming 
Published: May 2021

Abstract
The paper concentrates on a cost control and management problem of high-speed railway signal systems when the project managers require to organize, implement, and assess the project cost. When it comes to the existing issues of implementing railway signal project, the management process’s actual performances are presented, including the weak awareness of refined management and the lack of the financial management information system. Aiming to reduce project cost and safe operation of the signal systems, the refined cost control and management methods and concrete measures are presented during the concrete stage involving project bidding, preparatory, implementation, and completion.
Study on Measurement and Alarm Device with Magnetic Fluid for Air Flow Safety
Authors: Hao Ruican , Liu Huagang , Wang Shang , Ma Jinru 
Published: May 2021

Abstract
For many engineering fields, the air flow should be controlled into a safety range to ensure the production safely. A novel flow measurement device was designed for large safety range. A separable structure of the device was proposed to meet the convenience to carry. Magnet and magnetic fluid was selected as an inducting core. The characteristics of the inducting core were researched. The working principle of the measurement and alarm device for air flow safety was introduced and analyzed. The separable structure was designed to achieve two modes of the measuring and alarm device that one mode is for measuring and alarming work and the other mode is for storing and transporting conveniently. A pipe was designed for the air to pass through. Two coils were designed and chosen to be set up at two ends of the pipe to detect the changes of the internal magnetic flux and then alarm for the changes. An adjustment element was designed and set into the pipe to adjust the position of the inducting core to satisfy the requirements of the working conditions. The designed device is feasible to keep the air flow safely and to alarm when the air flow exceeds safety range.
Design of a cleaning robot for the interior of a mobile pressure vessel
Authors: Chen WuChao , Xi LingLi , Yang LiJun , Mu YanChun , Liu MingMing , Lin Qi 
Published: May 2021

Abstract
Mobile pressure vessel in operation, will produce a lot of impurities inside the container, Up to tens of kilograms to hundreds of kilograms. The impurities are not only flammable and explosive, but also toxic and harmful. Moreover, the internal structure of the container is complicated, and it is difficult to remove it with conventional water cleaning or steam purging. which will cause explosions, personnel poisoning and other hazards during welding and inspection. In this article, for the inspection and cleaning of mobile pressure vessels, how to design a semi-automatic robot to remove impurities inside the container and ensure the safety of the inside of the container, The authors published their own design ideas.
Design and Demonstration of Experiment Bench with Small Vibration Source and Large Load
Authors: Li Wanguo , Lv Min , Liu Chengyao 
Published: May 2021

AbstractWe design a kind of vertical vibration experiment bench with small vibration source and large load, and demonstrate that the support spring has no influence on the vibration transmissibility. The spring parameters are designed based on the resonance characteristic of the spring, and the transfer plate is simulated and optimized by Workbench and Hyperworks. The experiment bench makes the large load can be vibrated under the excitation of small vibration source, which provides a reference design for the vibration isolator and other equipment that need to carry out the large load vibration experiment.
Simulation and analysis of marine strong magnetic surface-mounted shield
Authors: Wang Zhi , Zhao Bin , Liu Maoke , Zhu Honghai , Qi Guoliang 
Published: May 2021

Abstract
In the course of the ship’s navigation, a strong magnetic surface mount method is used to realize real-time observation of the temperature and salt elements of the sea surface. In order to ensure the stability of the magnetic module (the shield) during navigation, the force condition was analyzed with ANSYS Fluent, and a design calculation method was proposed. Firstly, numerical simulation analysis is carried out on the force of the shield. Secondly, the magnetic force of permanent magnets with different sizes is calculated. Through the analysis of the overall force, the size and total number of magnets required on the shield are finally determined.
Design and Structure Simulation Analysis of Sand-mold Inkjet Printing Device
Authors: Wang Yifei , Shan Zhongde , Wu Shuangfeng , Guo Zhi , Dong Shijie , Hu shan 
Published: May 2021

Abstract
Ink-jet printing technology is a digital high-efficiency forming technology that can realize the rapid manufacturing of sand mold for foundry. This paper designs a low-cost, high-reliability ink-jet printing device based on the sand-mold inkjet printing process, and uses ANSYS finite element analysis software to carry out static analysis and modal analysis for its main frame. The analysis results show that the main frame has good rigidity and high strength, there will be no large deformation and resonance in frame under the working conditions, which can meet the requirements of sand-type inkjet printing devices.
Design of high power switched reluctance motor controller
Authors: Cao Jianping , Zhang Yulin 
Published: May 2021

Abstract
This paper takes the high power Switched Reluctance Motor (SRM) as an example, and designs the control system of the SRM according to the structure and operation characteristics of the high power SRM. The control system takes STM32 MCU as the core, and is composed of driving circuit, current detection circuit and protection circuit. The control methods commonly used in SRM include current chopper control (CCC), voltage chopper control (VCC) and Angle position control (APC). In addition, PI closed-loop control strategy is used to optimize the system performance, which verifies the feasibility and stability of the design of the motor control system.
Structure design and type selection of a crawler manipulator chassis
Authors: Xingzhizhi  , Lianzhou Yu , Lei Fan , Shangli  , Xiaolin Zhang 
Published: May 2021

Abstract
The crawler robot chassis is intended to be used in dangerous places, complex environment and other operations, the machine can work on complex ground, with good environmental adaptability, good crawler grip, no slipping. This paper briefly introduces the structure design, control system design and motor selection of the new crawler manipulator chassis.
Design and Lightweight based on FSC racing monocoque
Authors: Ye Pengxiang , Zhou Wencan , Zhao Chaohui 
Published: May 2021

Abstract
In order to improve the handling of the suspension system in FSC racing cars under extreme operating conditions, the overall strength stiffness of the car is improved to provide reliable support and protection for the driver, engine and all other components. This paper focuses on the torsional stiffness of the load bearing members required for the transient conditions of the car entering and exiting the corners. Based on the design value, 3D modeling was carried out according to the 95th percentile manikin and driver data. Importing Hypermesh to divide the mesh for finite element analysis of each working condition, and changing the skin thickness, core material thickness or core material type for each area of the whole vehicle to continue to optimize the performance of the parts and complete the purpose of lightweighting.
Smart Pet Feeding Device Based on Single Chip Microcomputer
Authors: Su Qiaoping , Liu Yuan , Wu Haojian 
Published: May 2021

Abstract
In modern society, more and more young people take pets as their emotional sustenance. However, due to the busy daily work, we can’t take care of the pet’s diet in time. In order to make this kind of people more convenient to feed their pets, we designed an intelligent pet feeder based on MCU. This design can solve the problem that the pet owner can’t take care of the pet’s diet for various reasons to a certain extent. The system uses STC89C52RC single chip as the main control chip, which can manually set the feeding times and feeding time of pets, display the data through LCD1602 screen, and use step motor to control the opening and closing of the intelligent pet feeder. A sound prompt module is set up, which uses the buzzer to send out feeding signals during feeding time to attract pets to eat.