bluuebunny/crossref_metadata_2025_split huggingface dataset:
Static optimization design of a printer heat-roller based on sensitivity analysis
Authors: Wen Guang , Liu Pingping , Zuo Fangjun , Su Rui , Jia Meiwei , Li Gangjun 
Published: March 2020

Abstract
Taking the printer heat-roller as the research object, the static characteristics and sensitivity were analyzed by finite element method. Through static analysis, the static characteristics of the heat-roller under working load were obtained, and the size parameters which have great influence on the static characteristics of the structure were determined by sensitivity analysis. The heat-roller was optimized to reduce the self-weight of the structure. It is concluded that the maximum working stress of heat-roller under working load is less than the allowable stress of material, and the structural dimension meets the strength requirement. According to the sensitivity analysis results, it can be seen that the structural parameters which have great influence on the static characteristics of the heat-roller are d3, d1, l1, l2 and F. Through optimum design, the weight of the roller was reduced by 15.18%. The analysis results provide a reference for the design of other similar structures.
Design and Test of Double-pick Double-striped wheel Tooth-type Residual Film Picker
Authors: Zhang Yaxin , Li Hang , Li Shaohua , Zhang Hongze 
Published: March 2020

Abstract
For the wheel-toothed residual film picker on the more serious broken film pick-up effect is not ideal and the problem of picking up the film uneven lysing and designed a double-pick double-striped wheel tooth-type residual film picker. The double-pick double-striped wheel tooth-type residual film picker is composed of hydraulically adjusted double-pick double-pick double-pick pick-up machine shell device, two sets of fork-type residual film picker body and two sets of “Ya” type flexible film removal roller body. The test results show that the efficiency of double-pick edgy wheel tooth-type residual film pick-up machine whole machine scrap film pick-up is 86.5%, which meets the agronomic requirements of the residual film pick-up. At the same time, the hydraulic system adjusts the pick-up machine and the distance of cultivated land, with the arable land-shaped adjustment height, so as to effectively solve the phenomenon of uneven film collecting.
Design of A Dual-rotor Engine Driving by the Elliptic Gear
Authors: Fan Yi 
Published: March 2020

Abstract
Aiming at the shortcomings of the crank-connecting rod mechanism engine, such as low transmission efficiency and high side pressure between the piston and the cylinder, the paper proposes a kind of dual-rotor engine driving by the elliptic gear. The left and right rotors are driven by the gas pressure in the cylinder, and then the elliptic gears on the output shaft are driven by the circular gears and the elliptic gears on the intermediate shaft. When the gears rotate, the output shaft connected outputs power again and again. The rotor rotates one circle, the four “cylinders” separated by the rotor work one time respectively, and the output shaft rotates two circles. The results of the calculation and the simulation test show that the serialization design can be carried out by setting different parameters of the long half-axis and the eccentricity. When the value of the long half-axis (100mm in this design) is fixed and the eccentricity is 0.4, 0.6 or 0.8, the rotation angle and the speed of the left and right rotors change obviously. The greater the eccentricity, the greater the difference of the rotation angle and the speed of the left and right rotors. The higher the compression ratio of engine, the higher the transmission efficiency.
Simulation analysis and experiment research of stiffness variable shock isolator for large-scale marine equipment
Authors: Lu Xiang , Yan Xiaojie , Wu Bo 
Published: March 2020

Abstract
In order to analyze working performance of shock isolators for large-scale marine equipment under heavy shock load, a certain type of stiffness variable shock isolator was studied by conducting FEA calculation and shock experiments. Good agreement between the simulation and experiments proves the efficiency of calculation method. Results show that the shock isolator can provide alterable stiffness in axial compression, and absorb enough shock energy within restricted area to achieve shock isolation and elastic limit of equipment in harmony.
The method of grid map construction of visual characteristics on rocket tank surface and robot automatic cleaning path planning
Authors: Liu Xiaodong , Xu Haibo , Wang Li , Liu Li , Wang Rui 
Published: March 2020

Abstract
According to the actual engineering needs, this paper proposed a method of grid map construction of visual characteristics on rocket tank surface and robot automatic cleaning path planning. Through the image processing algorithm, the flange obstacle features and smudge features of the rocket tank surface are extracted, and the cleaning grid map of the rocket tank surface is constructed with this features. Aiming at the circumferential cleaning requirements of rocket tanks, a global path planning method based on artificial potential field loop traversal is proposed to achieve traversal coverage cleaning of stain points. It is verified by simulation experiments that the path planning method proposed in this paper meets the actual needs and is of great significance for realizing the cleaning automation of rocket storage tanks.
Comparative Study on Turbulence Models of High-Speed Centrifugal Pump with Low Specific Speed
Authors: Li Xiaoyu , Ji Yunguang , Cui Hongbin , Xue Shuqi 
Published: March 2020

Abstract
It is very important to use high-speed centrifugal pump with low specific instead of multi-stage high-pressure pump to reduce the volume of the whole marine reverse osmosis seawater desalination system. Based on the design model of high-speed centrifugal pump with low specific speed, we did a comparative study of 11 kinds of turbulence models with numerical simulation. Five methods (the convergent curves, calculation time step, characteristics curves, impeller fluid velocity and pressures, volute section surface streamline) are included to find the most suitable turbulence model. The results show that k-ε is the most suitable turbulence model to compare with design conditions and external characteristics, SST and RNG k-ε turbulence models appears more surface streamline details in the volute section.
Study on the influence of impeller area ratio parameter on performance and flow excitation of centrifugal pump
Authors: Chen Changsheng , Li Shan , Lu Ben , Lu Zhen , Zhang Yi 
Published: March 2020

Abstract
The internal flow passage of centrifugal pump involves many geometric parameters and area parameters, which are not independent but interrelated. Area ratio is a physical quantity which combines different area parameters together, and studies the area ratio relationship between the impeller outlet and the inlet, which can provide new ideas and methods for the improvement and optimization of centrifugal pump. In this paper, through numerical calculation, the hydraulic performance, flow characteristics and pressure pulsation characteristics of centrifugal pump under different area ratio parameters are compared. The results show that when the area ratio increases, the head and efficiency of the pump are better, and the flow excitation under the main excitation frequency decreases. In addition, the recommended area ratio value range is also given.
Design of a New Type of Hybrid Heavy Load Palletizing Robot
Authors: Shu Yang , Li Kaiming 
Published: March 2020

Abstract
In the field of heavy-duty palletizing robot, the mature products in the market mostly adopt series mechanism, which has the disadvantages of long arm of each joint, large driving force and high cost. Although the robot with parallel mechanism does not have the above problems, its application is restricted due to its small working space. In this paper, a new type of hybrid mechanism has been designed. We analyzed the kinematic characteristics of the mechanism, used MATLAB to simulate the workspace and kinematics, and proved that it is suitable for heavy load palletizing.
Features of Mechanical Product Manual and Its Translation Strategies
Authors: Wang Mingliang , Liu Zhihui 
Published: March 2020

Abstract
Mechanical product manual is a kind of application writing used to introduce the performance, specifications, use and way of maintenance about specific mechanical products. Based on the linguistic adaptation theory, the present paper probes into the research of mechanical product manual translation. The translation of mechanical product manual can offer the target language customers the equivalent product information, publicize the mechanical products, and even attract the potential customers. On this premise, a qualified translator ought to comply with the features of mechanical product manual and adopt the appropriate translation strategies so as to render a high quality translation.
Discussions on Fracture Mechanisms of Composite Insulator
Authors: Zheng Jianjun , Wei Zhigang , Gao Yunpeng , Gong Weiwei 
Published: March 2020

Abstract
During actual operation, the fiber reinforced plastic (FRP) rod of composite insulator was usually cracked with major characteristics of brittle and decay-like. The made a systematical expatiation of the failure modes of FRP rod, and the mechanisms of these two common fracture types were analyzed. At last, as far as possible to avoid the occurrence of FRP rod fracture accidents in the transmission lines, from the point of view of operation and running, advice about promoting the manufacture level and installation quality of composite insulators were given.
Manufacture on marine equipment special repair material—Metalock
Authors: Shen Zhelun , Wang Yaning , Song Wendong , Ji Lili , Cai Lu 
Published: March 2020

Abstract
As a unique cold repair process, Metalock procedure perfectly solves the problem that cast iron parts are difficult to weld, but it can be welded when the proper procedures are used. The Metalock are the core of this process. However, its preparation technology has always been foreign, that China can only cost high prices from abroad. For the purchase, the wave bond is prepared by the cold pier process, which is mainly divided into four steps of cutting, surface treatment, phosphorus saponification and rolling forming. The subject selected 304 stainless steel with higher hardness, better corrosion resistance and high temperature resistance as the main material, and manufactured Metalock through pressure die and WEDM.
Comprehensive evaluation and analysis of design scheme of automatic feeding and discharging device for freeze-drying system
Authors: Ding Jin , Ge Zheng-hao , Cheng Li-hua 
Published: March 2020

Abstract
In order to improve the reliability of the design scheme, objective design scheme evaluation methods were selected to the optimal scheme. According to the existing problems of the automatic feeding and discharging device prototype for the freeze-drying system, operator’s actions which included disassembling and cleaning the device were simulated by the software of Siemens Tecnomatix Jack. The analysis results were verified and guided the design direction. Analytic hierarchy process, grey correlation analysis method, and combination of the above two methods were applied. Design scheme was determined according to the evaluation results. The results obtained schemes, design evaluation. According to the evaluation results, the first scheme was selected. It can be seen that gray correlation analysis is applied, and more objective manner is used to provide a reference.
Lifetime prediction for carbon fiber composite core wire based on accelerated degradation test
Authors: Wang Junbing , Liu Gen 
Published: March 2020

Abstract
To reduce the huge loss caused by the failure of long-term transmission wire, proper method for the life time prediction is imminent. In this paper, to accomplish long-term service time prediction of carbon fiber composite core (CFCC) wire, an accelerated degradation test is conducted, where 15 samples are allocated to three temperature levels and the degradation data sets under different condition are obtained. Based on the test results, an accelerated degradation model is constructed where Arrhenius function is incorporated to characterize the relationship of degradation rate and temperature. Finally, the median service life and 95% reliable service life of CFCC wire for several conditions is predicted based on the test results and the accelerated degradation model.
Study on Galloping Characteristics of Large-section Carbon Fiber Composite Core Conductor
Authors: Zhan Xueping , Liu Bin , Wang Jingchao , Ji Kunpeng 
Published: March 2020

Abstract
This paper establishes the finite element galloping model of large-section carbon fiber composite core conductor, and selects three kinds of large-section conductors to analysis on galloping characteristics, i.e. carbon fiber composite core large-section conductor JLZ2X1/F2A-1660/95-492, 1,250mm2 large-section aluminum conductor steel reinforced JL1/G2A-1250/100-84/19 and 1,520mm2 aluminum conductor aluminum-alloy reinforced JL1X/LHA1-1040/550-487, thus obtaining galloping amplitudes and galloping tension values of three kinds of conductors. In addition, this paper compares the galloping characteristics of such three conductors, thus obtaining galloping characteristics of large-section carbon fiber composite core conductor. The research achievement provides technical support for anti-galloping design of carbon fiber conductor on the power transmission line.
Lignin Effect to Synthesis of the Hybrid Polyurethane
Authors: Dwijaya M. S. , Setiaji D. A. , Mustafa J.H. , Chalid M. 
Published: March 2020

Abstract
Lignin which is hydrophobic due to presence of carbonyl; carboxyl; hydroxyl and phenol functional group, can be used as compatibilizing agent through grafting a hydrophobic part such as polyurethanes. Lignin-based biopolyurethane (bioPU), was synthesized by two stages of reaction viz., polyurethane preparation through reacting 4,4′-Methylenebis (CyclohexylIsocyanate) (HMDI) and polyethylene glycol (PEG, molar mass of 4000 g/mol); bio-PU preparation through grafting lignin onto the polyurethane. The ratio of diisocyanate to polyol and lignin addition were varied in 1: 4, 1:1 and 0.25 g, 0.5 g, 1 g, respectively. Products were investigated by observing FESEM (Field Emmision Scanning Electron Microscope), 1H NMR (Nuclear Magnetic Resonance) and FTIR (Fourier Transform Infra-Red Spectroscopy). The FESEM result shows that lignin based bioPU with isocyanate/polyol ratio 1:4 and 1 g lignin addition is more homogenous than isocyanate/polyol ratio 1:1 and 0.25 g lignin. The NMR and the FTIR spectra reveal the lignin grafed onto polyurethane product. The addition of 0.25 and 1 g lignin resulted in 0.2 and 0.6 hidrophilic/hidrophobic segment ratio, respectively. Furthermore, characterizations of the products confirmed that the lignin-based bioPU can be a promising compatibilizer.
shear contribution of basalt fiber reinforced polymers bars(BFRP) reinforced light weight concrete (FRLWC)
Authors: Benzemouli Sara , Wang Zhenying 
Published: March 2020

Abstract
This study evaluates both experimentally and analytically the shear behavior of basalt fiber-reinforced concrete (BFRC) beams reinforced longitudinally with basalt fiber reinforced polymer (BFRP) bars. A new type of basalt macro-fibers was added to the concrete mix to produce the BFRC mix. Fourteen beams were tested under four-point loading configuration until failure occurred. The beams were grouped in two groups A and B depending on their span-to-depthratios. The test results showed that the addition of basalt macro-fibers to the concrete mix enhanced its compressive strength.a new modified model incorporating the type of the longitudinal reinforcement, the type of FRC used, and the density of concrete was proposed. The model of Ashour et al. – A (1992) was calibrated. The proposed model predicted well the shear capacities of the BFRC-BFRP beams. The shear capacities of the lightweight concrete beams tested by Abbadi (2018) were predicted with an average ratio the model predicted well the shear capacities of the SFRC beams reinforced with BFRP bars tested by Awadallah et al. (2014), it is recommendation that the proposed model be assessed on larger set of data than that presented in study the experimental program is presented.
Preparation of PUV-3853 and Its Mechanical Properties in ABS Resin
Authors: Lu Zhi-Xun , Wang Shu , Chen Jie , Zhang Qi Zhong , Dong Wei 
Published: March 2020

Abstract
This paper mainly studies the synthesis of polymeric hindered amine light stabilizers by copolymerization, UV3853 (2,2,6,6-tetramethyl-4-piperidine stearate) as monomer, styrene (St The functional monomer, toluene is used as a solution, and the initiator is azobisisobutyronitrile (AIBN), and the hindered amine light stabilizer is synthesized by solution blending. The ABS composite is prepared by melt blending of the product and ABS pellets. The composite is tested for impact and tensile properties. The results show that when the addition amount of PUV-3853 is 0.1% (mass fraction), the mechanical properties of the composites are the best.
Preparation and Properties of Graphite/Epoxy Resin Conductive Composites
Authors: Yao Shan-Shan , Jiang Di , Zhang Qi-Zhong , Wang Xin-Xin 
Published: March 2020

Abstract
Graphite / epoxy resin conductive composites were prepared by mixing and molding process, using graphite and epoxy resin as raw materials, filling carbon fiber cloth and mixing a small amount of metal powder. We investigated effects on the different ratio of graphite raw materials and the amount of carbon fiber cloth and different metal powder on the resistance and bending strength of graphite / epoxy resin conductive composites. The optimum ratio of raw materials was determined by the experiment. The results showed that the electrical and mechanical properties of the composites were good when the ratio of the two kinds of graphite was 1:1, filling two layers of carbon fiber cloth and the content of aluminum powder was 1%. The resistivity was up to 0.0800 Ω•cm, and the bending strength was up to 47.32MPa.
First Principles Calculation Study of Zn1-xMgxO/Cu2ZnSnS4Heterointerface
Authors: Bao Wujisuguleng , Sachuronggui  , Qiu Fangyuan 
Published: March 2020

AbstractCu2ZnSnS4(CZTS) has attracted a lot of attention recently as a promising absorber layer material in a heterojunction solar cell. In this work, the Zn1-xMgxO material is substituted for CdS due to its abundant and nontoxic consisting elements. We have studied the band gaps of Zn1-xMgxO alloys with different values of x and the band offsets at Zn0.75Mg0.25O/CZTS heterointerface based on the first-principles and pseudopotential calculation method. The band gaps enhance linearly with the increasing values of x. The total density of state and local density of state of each atom in Zn0.75Mg0.25O/CZTS supercell are calculated. We predict that the heterojunction of Zn0.75Mg0.25O/CZTS is a type II heterointerface with a 0.2eV of conduction band offset, during which the conduction band minimum of Zn0.75Mg0.25O is lower than that of CZTS.
Experimental Study on Material Properties of Bearing Bush of Water Lubricated Bearing
Authors: Chen Changsheng , Li Shan , Lu Zhen , Ma Zhenlai , Li Guoping , Zhang Yi 
Published: March 2020

Abstract
Water lubricated bearings are commonly used equipment in ship and other fields. The friction factors and other parameters of bearing materials have great influence on the performance of Water lubricated bearings. In this paper, a comprehensive bearing test platform was established, the slurry wear test of bearing material was carried out on the MPH corrosion wear tester, and the effects of wear time, sliding speed and load on the friction performance of bearing material were obtained. And then the effects of different additives on the optimization and improvement of the wear resistance and friction coefficient of bearing bushes have been systematically analyzed. The results show that the friction coefficient increases when glass fiber is added into PTFE matrix, but the effect of carbon fiber is not significant. The material composed of PTFE matrix and graphite not only improves the wear resistance, but also reduces the friction coefficient. Rigid additives increase the hardness of PTFE matrix, while soft additives decrease the hardness of PTFE matrix. Almost all kinds of additives can reduce the impact strength of PTFE matrix.
Research on Fault Detection Method of Mineral Powder Production Line Based on Information Fusion
Authors: Wang Zhantao , Luo Yi , Tang Yong , Lu Xinjia , Zhang Yankai 
Published: March 2020

Abstract
By analysing the uncertainty of information in the production process of the mine, and the diversity of the fault detection components of the production equipment. Combining the trend of big data development, comparing and analysing various fault diagnosis methods, a Bayesian information fusion algorithm based on improved learning process is proposed. The traditional Bayesian information fusion algorithm is combined with the learning idea of migration algorithm to obtain an optimized Bayesian fault detection algorithm. This algorithm can minimize the waste and loss of data and improve the detection accuracy.
Optimization of Combustion Control System for Regenerative Forging Heating Furnace
Authors: Li Hongtao , Liu Xiaobo , Ji Yunguang , Cui Hongbin , Xue Shuqi , Liu Yazhi 
Published: March 2020

Abstract
In order to reduce the influence of temperature fluctuation on heat treatment of regenerative forging reheating furnace, a scheme of improving traditional cascade PID controller to fuzzy PID controller was proposed in this paper. Taking the actual PID parameters of reheating furnace in forging workshop of a steel plant as reference object, the feasibility of the scheme is simulated by using MATLAB/SIMULINK. The results show that: 1) The control effect of fuzzy PID control is better than that of PID control in overshoot and adjusting time when the gain coefficient is perturbed 30%; 2) The dynamic performance of the system does not change significantly when the time constant is perturbed 20%; 3) The fuzzy PID shows better stability when the lag time is perturbed 20%.
Research Status of Experimental Characterization of Materials Electrical Properties
Authors: Zhao Mingzhe , Tian Shuang , Li Xingeng , Jiang Bo , Li Wenjing , Wang Xiaoming , Zheng Wenjie 
Published: March 2020

Abstract
With the continuous development of the power industry, the electrical properties of materials are required to be higher. In the process of material research and development, accurate characterization of electrical insulation properties is the focus of experts and scholars. The most basic electrical performance and its characterization indexes include: electrical strength is the commonly used characterization index of electrical breakdown characteristics, resistivity is the commonly used characterization index of electrical conduction characteristics, and relative dielectric constant and dielectric dissipation factor are the commonly used characterization indexes of dielectric properties. In view of the above three kinds of indexes, this paper summarizes the principles and influencing factors involved in the experimental characterization of electrical properties of materials, traditional measurement methods, and new progress in experimental characterization.