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Introduction

Bimonthly, started in 1957
Administrator
Shanxi Provincial Education Department
Sponsor
Taiyuan University of Technology
Publisher
Ed. Office of Journal of TYUT
Editor-in-Chief
SUN Hongbin
ISSN: 1007-9432
CN: 14-1220/N

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Shanxi Provincial Education Department

Taiyuan University of Technology

location： home> 2021,52(06)

Effect of Laser Surface Texturing (LST) on Tribological Behavior of 316L Stainless Steel

Dimple surface texture with a matrix-distribution was prepared on the surface of 316L stainless steel by laser processing technology. Orthogonal experiment was established by taking as facters the geometrical parameters of dimple shape, area, and interval between two dimples. The effect of laser surface texturing on the tribological behavior of 316L stainless steel under dry friction was investigated. Range and variance analysis were used to analyze the mass loss of 316L stainless steel. The surf...

Taiyuan University of technology 2021,52(06): LIN Naiming , AGAMYRADOV Serdar , LIU Ruyi , YUAN Shuo ,WANG Weihua , MA Guanshui , FU Li. ;

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A Flexible and Self-healing Supercapacitor Based on Activated Carbon Cloth/Mn2O3 Composite

In this article, a flexible self-healing supercapacitor was fabricated by assembling two activated carbon cloth (ACC)/Mn2O3 electrodes and a self-healing physically cross-linked PVA-H2SO4 gel electrolyte. The results show that ACC/Mn2O3 exhibited excellent electrochemical performance (the area specific capacitance at 1 mA/cm2 was 2 264 mF/cm2, and the capacitance retention rate after 10 000 cycles was 93%). The supercapacitors showed excellent flexibility and good self-healing ability, and the ca...

Taiyuan University of technology 2021,52(06): REN Jing, REN Ruipeng , LYU Yongkang. ;

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Walnut Shell-based Activated Carbon for Li—S Batteries and the Effect of Pore Structure on the Perfo

Walnut shell (WS) was used as carbon source and KOH as activator. A series of activated carbon with different pore structures were produced by changing the mass ratio of KOH to carbonized precursor from walnut shell (KOH/carbonized precursor ratio), so as to reveal the relationship between the pore structure and the electrochemical performance. The result shows that the specific surface area, total pore volume, and percentage of mesoporous volume of activated carbon increased obviously with risin...

Taiyuan University of technology 2021,52(06): WANG Le, ZHOU Xianxian, CHEN Liang, LI Yu, DUAN Donghong, ZHANG Zhonglin, LIU Shibin. ;

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CNTs Supported Mo-Bi Bimetallic Sulfide for Electrocatalytic Reduction of CO2 to Methanol

Mo-Bi-S composite supported on carbon nanotubes (CNTs) was synthesized by hydrothermal method(Mo-Bi-S@CNTs). The effects of preparation temperature on the morphology, structure, and CO2 electrocatalytic performance of the catalysts were investigated. The results show that the Mo-Bi-S nanoparticles synthesized at 200 ℃ were smaller than others, about 10~15 nm in size and distributed uniformly on CNTs. At the same time, they showed better electrocatalytic performance in [NH2-emim]BF4-H2O (ω=40%) ...

Taiyuan University of technology 2021,52(06): CHI Chen, LI Chunhui, DUAN Donghong, ZHANG Zhonglin, WEI Guoqiang, LI Yu, LIU Shibin. ;

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Investigation of Simulated Domestic Sewage Treatment Performance Via Scenedesmus quadricauda and Chl

The fast development of urbanization emits huge amount of domestic wastewater, of which the high contents of chemical oxygen demand(COD), NH4-N, total nitrogen and phosphorous lead to the difficulty in their complete removal and the recycling of the water. To solve this problem, the simulated domestic sewage treatment efficiency was investigated via scenedesmus quadricauda and chlorella pyrenoidosa in terms of COD, NH4-N, total nitrogen (TN), and total phosphorous (TP). The influence of the dosag...

Taiyuan University of technology 2021,52(06): LI Chao, HUI Xiaomei, PAN Zihe, WU Yachuan, FAN Biao. ;

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Design and Research on Denitrification of Urea in a New Household Biomass Boiler

In order to make full use of the biomass resources such as straw and wood in rural areas, the hourglass furnace structure and urea spray denitrification system were designed to solve the problem of high nitrogen oxide emission in rural household biomass boilers, and the combustion experiments were carried out by building a boiler test bench. In this paper, three kinds of biomass briquette fuel were selected for experimental research. By measuring the emission concentration of nitrogen oxides, the...

Taiyuan University of technology 2021,52(06): ZHAI Yuxuan, ZHANG Xinghui, ZHANG Cong, LI Zhao, ZHANG Hong. ;

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A Survey of Weakly-supervised Image Semantic Segmentation Based on Image-level Labels

According to the different ways of image-level label location inference, the weakly-supervised image semantic segmentation methods with image-level labels were divided into superpixel-based methods and classification-network-prior based methods. Then, various methods were discussed and summarized in detail from the principles, advantages and disadvantages, key links, main technologies, features, superpixel/candidate region segmentation, seed region generation, network structure and dataset, etc. ...

Taiyuan University of technology 2021,52(06): XIE Xinlin, YIN Dongxu, XU Xinying, LIU Xiaofang, LUO Chenyan, XIE Gang,. ;

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Research on Electrical Fire Warning Algorithm Based on Multi-source Data Collaborative Sensing

A electrical fire warning algorithm based on multi-source data collaborative sensing was proposed, which takes into account the temporal characteristics of electrical data and the correlation between different sensing data. The relationship between multi-view and low rank analysis is used to identify outliers. Finally, the detection results are fused in real time and effectively to obtain more accurate abnormal data detection results. The experimental results proved the higher anomaly detection r...

Taiyuan University of technology 2021,52(06): ZHAO Yueai, GUO Xingyuan. ;

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Multi-antenna Tag Ambient Backscatter System Based on Clustering Analysis

Ambient backscatter technology can effectively solve the energy problems of communication and battery-free equipment. The ambient backscatter communication system uses a single antenna tag for communication and carries out signal detection at the cost of reducing the communication rate. In order to solve the problem that the single-antenna tag ambient backscatter communication system is not suitable for real-time scenarios, a multi-antenna tag ambient backscatter communication system model was de...

Taiyuan University of technology 2021,52(06): YUE Heng, ZHAO Jumin, LI Dengao. ;

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A Non-intrusive Intelligent Monitoring Method for Elevator State

A non-intrusive intelligent monitoring method for elevater state was established. In this method, the acceleration signal is initialized by Weiszfeld algorithm, and the acceleration signal is decomposed into vertical component and horizontal component. The dynamic characteristics of elevator are estimated by Kalman filter. The vibration analysis of horizontal component is carried out and the baseline of normal operation is established. The sensor is calibrated automatically according to the opera...

Taiyuan University of technology 2021,52(06): YANG Yu, WANG Qianshan, LI Xuepeng, XU Zeng, LI Haifang. ;

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Fault Protection Based on the Ratio of Zero-sequence Current Projection Components for Low-resistanc

The electrical characteristics of a single-phase grounding fault in a low-resistance grounding system was aualyzed, and a fault protection scheme was proposed for low-resistance grounding systems according to the ratio of the zero-sequence current projection components. The primary line selection was performed according to the zero-sequence current projection method and then the phase difference value was used for the secondary judgment. The proposed protection scheme was verified by Matlab/Simul...

Taiyuan University of technology 2021,52(06): NIU Yuan, QIN Wenping, XIA Fuliang, SHANGGUAN Xin, ZUO Pengfei. ;

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Pose Estimation of Mobile Robots Based on Maximum Correntropy Under Kalman Filtering Framework

To address the problem of low pose estimation accuracy of traditional filtering algorithm for mobile robots in non-Gaussian noises, a pose estimation algorithm based on the combination of iterative unscented Kalman filter (IUKF) and maximum correntropy (MC), named as MCIUKF, was proposed for the application of simultaneous localization and mapping(SLAM). MC is used to deal with non-Gaussian noise, a cost function based on MC is constructed, and then the Levenberg-Marguardt method (LM) is used to ...

Taiyuan University of technology 2021,52(06): LI Zhipeng, CHENG Lan, WANG Zhifei, YAN Gaowei. ;

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Study on the Effect of Temperature on the Pyrolysis-Mechanics-Seepage Characteristics of Oil Shale

In order to obtain the response law of pyrolytic chemical structure, seepage characteristics, and mechanical characteristics of oil shale to temperature, the structural evolution of functional groups in oil shale under different temperatures was qualitatively described and quantitatively analyzed by Fourier infrared spectroscopy (FTIR). Electronic universal testing and high-temperature triaxial penetration test were combined to reveal, the influence law of temperature on oil shale strength and pe...

Taiyuan University of technology 2021,52(06): ZHANG Honggea, ZHAO Yangsheng, YANG Dong, WANG Lei. ;

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Influence Law of Particle Size and Soil Thickness on the Permeability of Topsoil of Open-pit Dump

The influence of soil particle size and soil layer thickness on the permeability characteristics of open-pit dump was investigated, so as to provide a theoretical basis for the irrigation water consumption for the land reclamation and ecological restoration of open-pit dump. The surface soil outside the open-pit mine dump was selected as the research object, the particle size and soil thickness as the influencing factors, and the 0.5, 1, and 2 mm particle size and 5, 10, 15, and 20 cm soil layer ...

Taiyuan University of technology 2021,52(06): MA Li， LUO Qiang, WU Jing, BI Yinli, PENG Suping, XUE Fei. ;

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Research on Calculation of Ultimate Lateral Bearing Capacity of Single Pile Based on Soil Arching Ef

In order to facily determine the ultimate lateral bearing capacity of single flexible pile, the theoretical formulas of coefficient of earth pressure and the friction coefficient of horizontal differential enements and the improved calculation method of ultimate lateral bearing capacity of single flexible pile were established on the basis of the soil arching effect of wedge failure, major principal stress arching, Mohr-Coulomb strength criterion, and horizontal differential enements, by replacin...

Taiyuan University of technology 2021,52(06): WANG Weizhong, LI Yonghui. ;

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Evaluation Model of Rock Burst in Coal Mine and Its Application

The evaluation index of coal mine rock burst has some uncertainties such as diversity and randomness, the scientific and accurate index weight can not be determined, and the evaluation result always deviates from the reality. In order to solve the above problems, an evaluation index system of coal mine rock burst was constructed, which takes geological conditions, safety management, mining technology, and other factors as criterion layer, and 24 factors such as mining depth and mechanical propert...

Taiyuan University of technology 2021,52(06): CHEN Guangbo, TENG Pengcheng, LI Tan, WANG Chuangye, CHEN Shijiang, ZHANG Guohua. ;

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Big Gradient Deformation Monitoring in Open-pit Mine Based on SAR Offsets Tracking Techniques

The influence of different parameters on the offset tracking calculation results was analyzed. Then, the offset tracking method based on texture features was added to the offset tracking tool of SNAP8.0. Two offset tracking methods were combined to process the Sentinel-1 ascending and descending data. Two-dimensional deformation of the open-pit mine were calculated according to the geometry of ascending and descending observation. The results show that there are 6 large gradient deformation areas...

Taiyuan University of technology 2021,52(06): SUN Jun, ZHANG Jin. ;

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Numerical Simulation and Monitoring of Unloading the Temporary Supports of High-rise Structures: a C

The lifting construction process of high-rise structure is very difficult, and the unloading and demolition of lifting equipment and temporary support pose a greater challenge to the construction safety of high-rise structure. With the Beijiang Pearl Tower Project as the background, the unloading process of the revolving restaurant after hoisting was studied by combining Abaqus life and death element technology with unloading process monitoring. Five unloading schemes were formulated to analyze a...

Taiyuan University of technology 2021,52(06): YANG Huiwei，DONG, Jingmin, ZHENG, Fangjun, FENG, Lingfei, ZHANG, En, LU, Guoyun. ;

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Star-shape Electrode Dielectrophoresis Chip

In this paper, an effective method of enriching polystyrene (PS) microspheres on dielectrophoretic chip by negative dielectrophoretic force was proposed. A star-shaped microelectrode was designed and fabricated on a glass substrate by a lift-off process. Under the action of a high-frequency AC signal, the star-shaped microelectrode chip can provide a specific non-uniform electric field, which can produce negative dielectrophoretic force.The effects of amplitude and frequency of AC signal, conduct...

Taiyuan University of technology 2021,52(06): WU Yueyuan, YAN Pengyun, LIU Yang, JI Jianlong, JIAN Aoqun, SANG Shengbo. ;

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Skin Support Printer Based on ZYNQ

In order to meet the market demand for medical devices and improve the accuracy and speed of existing printers, a skin mount printer was designed. Centered around Xilinx’s ZYNQ-7000, the whole printer uses its embedded ARM processor to carry Linux as the main control of the system. What’s more, it realizes three-axis drive, high-precision nozzle and proportional valve control on its editable logic device. Then, the accuracy and stability of the printer are improved by the acceleration and decel...

Taiyuan University of technology 2021,52(06): SUN Jianqi, ZHANG Bo, ZHANG Wendong, ZHOU Chuangang. ;

PDFviewed：abstract