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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> 2018.49(04)

Effect of Sn on Microstructure and Properties of Cu-Ni-Ti Alloys

With the very large scale integration lead frame material as object of study and on the basis of preliminary tests, Sn was added to Cu-Ni-Ti alloy by using ordinary metal casting forming method for smelting.The effects on alloy microstructure, phase change, conductivity and hardness properties were studied by adding different contents (0.757%, 0.865% and1.187%) of Sn to the C3 N1 Talloy.Results show that Sn can refine the alloy organized system, improve the alloy hardness and electrical conductiv...

Taiyuan University of technology 2018.49(04): WANG Jian ,CHEN Jin ,QUE Zhongping. ;

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Electronic Structure and Electroconductivity of B, N-Co-doped Single Layer Graphene

Density Functional Theory (DFT) was implemented to investigate the electronic structure of single layer graphene doped by boron (B) and nitrogen (N) in ortho-, meta-and para-positions at a doping ratio of 12.5%.The band structure, density of states, electron density and electron density difference were calculated.The results illustrate that a splitting appears between valance and conduct bands, which belongs to direct band gap.Furthermore, the band gap of B, N-co-doped graphene in meta-position i...

Taiyuan University of technology 2018.49(04): REN Fucheng, XU Shoudong ,ZHANG Ding ,CHEN Liang ,LIU Shibin. ;

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Influence of Hydrothermal Upgrading on Physico-Chemical Structure and Moisture Re-adsorption of Inne

In order to study the evolution of physico-chemical structure during hydrothermal upgrading process and its influence on moisture re-adsorption behavior, a lignite from Inner Mongolia was selected and hydrothermally upgraded at 170330 ℃ and the moisture re-adsorption behavior of the upgraded lignite was investigated.Moreover, the physical and chemical structures of the lignite were characterized by chemical titration and nitrogen adsorption.The results show that great changes occur on both physi...

Taiyuan University of technology 2018.49(04): MO Qiong, LIAO Junjie, CHANG Liping ,BAO Weiren. ;

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TfOH-Catalyzed Formal[3+2]Cycloaddition of Aziridines with Nitriles

Significant medicinal value of imidazolines has raised scientists wide attention in rencent years.To explore a green universal and effective method of imidazoline synthesis, in this paper trifluoromethanesulfonic acid (50%) as a catalyst and dichloroethane as solvent were selected by single factor screening, under which various N-tosylaziridines reacted effectively and rapidly with diverse nitriles via a[3+2]cycloaddition way.The reaction can proceed smoothly to obtain various imidazolines with g...

Taiyuan University of technology 2018.49(04): LIU Rui, LI Xing ,CHANG Honghong ,GAO Wenchao, WEI Wenlong. ;

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Synthesis and Insecticidal Activity of Triazone Containing Acyloxy

In order to find new triazone derivatives with potential biological activities, a series of novel triazones containing acyloxy (3 a-3 b) were designed and synthesized according to the method of active substructure combination and characterized by 1 H NMR, 13 C NMR and HRMS.The results of bioassays indicate that the compounds ethyl (6-methyl-3-oxo-2, 3-dihydro-1, 2, 4-triazin-4 (5 H) -yl) carbamate (3 b, 30%, 30%, 40%) and phenyl (6-methyl-3-oxo-2, 3-dihydro-1, 2, 4-triazin-4 (5 H) -yl) carbamate ...

Taiyuan University of technology 2018.49(04): YANG Yan, CUI Peipei. ;

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The Change Law of the Local Stress and Energy of the Defect of Granite in the Process of Temperature

On the basis of thermodynamic theory, and with full consideration of the impact of defects, the change law of thermal stress in defect of granite was researched under the action of temperature.The local stress in granite defects was derived as a function of temperature loading rate, initial temperature, final temperature and defect.With consideriation of the role of the thermodynamic parameters, such as temperature, free energy and entropy in the damage evolution of granite, and on the basis of t...

Taiyuan University of technology 2018.49(04): GAO Hongmei ,LAN Yongwei, ZHAO Yanlin, ZHOU Li. ;

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Mechanical Arm Design and Dynamic Simulation Analysis of Bolt Drilling Rig

Aiming at the problem of poor safety and low efficiency of artificial anchor cabling in underground roadway support, the cable rig has been designed to automatically hit the manipulator arm.On the basis of the actual size of the mechanical arm and the kinematics theory of robot arm, this paper established the dynamic equations of the mechanical arm of the cable rig.Owing to the relative complexity of the mechanical arm of the bolt drill, the mechanical arm has a great influence on the stability o...

Taiyuan University of technology 2018.49(04): ZHANG Jun ,HUANG Qingxue, MENG Wenjun, MA Lifeng. ;

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Simulation and Experimental Study on the Laser Forming of 6061 Aluminum Alloy Sheet

The finite element simulation model of 3D transient temperature field and deformation field under different power was established for the process of laser forming of 2 mm-thick 6061 aluminum alloy sheet.The simulation results are consistent with the experimental results.Both the temperature and deformation increase with the increase of power, the reason of deformation is the temperature gradient mechanism and the microstructure transition of the material in forming zone.Through the observation of...

Taiyuan University of technology 2018.49(04): HAN Yang ,LIANG Guoxing, MA Hongshuai, FAN Ziliang ,WU Jianxin. ;

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Influencing Factors of User Behavior on Virus Transmission in Social Networks

In view of the lack of user behavior in existing network virus propagation models a new network virus propagation model which is coupled with user behavior was proposed.Three important factors of user behaviors are extracted, including the users security awareness, the users interest in information and the source of link.The parametric function of the model is constructed.On the basis of this model, the threshold controlling the prevalence of network viruses is given by theoretic analyses.The cor...

Taiyuan University of technology 2018.49(04): ZHAO Yueai ,FENG Liping. ;

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Smoke Detection Algorithm Based on Multi-dimensional Dynamic Texture Analysis

Traditional video smoke detection algorithm only uses brightness values as image information when building a multi-dimensional image block, and has higher computation cost owing to the dense sampling.In order to improve the reliability of dynamic texture feature analysis and reduce the cost of computation, this paper puts forward a smoke detection algorithm based on multi-dimensional dynamic texture analysis.In the preprocessing stage, the preliminary separation of smoke foreground is performed b...

Taiyuan University of technology 2018.49(04): LI Hongyan, GUO Renfu, ZHANG Jing. ;

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Individual Identification of Leopard Based on Improved Cifar-10 Deep Learning Model

With the decrease of leopard population, the state and society attach importance to the conservation of leopard.Individual identification of leopard is the basis for effective conservation of leopard populations.In this paper, deep learning was first applied to leopard identification.The leopard images from Shanxi Wocheng Institute of Ecological and Environment in 2010-2016 were given data cleaning and data preprocessing, getting 540 training pictures and 110 test pictures.On the basis of the Cif...

Taiyuan University of technology 2018.49(04): ZHAO Tingting ,ZHOU Zhefeng, LI Dongxi ,LIU Song, LI Ming. ;

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Image Adaptive Target Recognition Algorithm Based on Deep Feature Learning

Aiming at the complicated process of traditional image recognition algorithm and the difficulty of feature extraction, an image adaptive target recognition algorithm based on deep feature learning is proposed.First, the input of the single feature graph of each layer is batch normalized (BN) ;then the parametric rectified linear unit (PReLU) is used to adjust the parameters adaptively.The performance of the BN algorithm before and after the activation function is compared and the adaptive convolu...

Taiyuan University of technology 2018.49(04): ZHANG Qianyu ,GUAN Shu ,XIE Hongwei ,QIANG Yan, LIU Aiyuan. ;

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Damage Detection Using the Extended Finite Element Method and An Enhanced Dolphin Echolocation Optim

A new method was proposed based on XFEM and EDEO algorithm to detect the position and size of damage.In order to identify the parameters of damages, EDEO algorithm was used for minimizing the difference between measurement data and the output of XFEM model.As to the DEO algorithm, a dynamic optimization mechanism by changing search scope was represented.Five processes, that is start search, fine search, translation search, backdate search and research, were used in EDEO algorithm.Compared with DE...

Taiyuan University of technology 2018.49(04): SHI Pengjie, YAN Gang. ;

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Design of 2-D Photonic Crystal Heterojunction for Dual-polarization Light Signal Unidirectional Tran

Photonic crystals are suitable for optoelectronic integration, for their sizes are comparable to their working wavelength.Optical diode is one of the fundamental elements in integrated optics.It allows optical signal to transmit only in one direction.On the basis of total reflection principle, a 2-D square-lattice photonic crystal heterostructure for unidirectional transmission of dual-polarization light is designed.The heterostructure consists of two photonic crystals.One is silicon rods immerse...

Taiyuan University of technology 2018.49(04): XU Ting ,LI Lin, FEI Hongming, LIU Xin ,YANG Yibiao ,CAO Binzhao ,CHEN Zhihui. ;

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Optical Interference Measurement and Control System of Piezoelectric Ceramic Micro-Displacement

In this paper, the optical amplification device based on multiple reflections is introduced for the micro-displacement detection of piezoelectric ceramics, which can effectively improve the resolution of Michelson interferometer.The relationship between the magnification, the incident angle and the angle of the mirror is analyzed theoretically, and the optical amplification characteristics of the optical path are simulated.Then the high precision optical interferometric displacement measurement s...

Taiyuan University of technology 2018.49(04): QI Yanqiang ,ZHAO Xiaodan, LI Mengyang, ZHANG Mingda ,CHEN Zhihui, YANG Yibiao. ;

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Simulation Study of Combustion for A Swirling Fired Boiler Based on Over-Fire Air Optimization

On the basis of experimental data, the numerical simulation was carried out for a600 MW swirling opposed utility boiler, using ANSYS 15.0 to investigate the effects of different over-fire air (OFA) ratios and different ratios of the upper OFA to the lower on combustion, and analyze the mutual restriction of reducing the incomplete combustion loss and NOx emission.The study shows that the incomplete combustion loss increases and NOx emission reduces with the OFA ratio increasing;when the ratio of ...

Taiyuan University of technology 2018.49(04): SHANG Fudong ,MA Suxia, MA Honghe, LI Jianrong. ;

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Application on the Antarctic Glacier Mobile Monitoring System Based on Real Time Kinematic Technique

Glacier movement as an important factor in the response to climate and geophysical changes has been a hot topic in glacier dynamics.Traditional glacier mobile monitoring methods are mostly remote sensing monitoring;In this paper, real time kinematic technology was used for glacier monitoring.The technical principle and system structure were introduced, a monitoring system was established during CHIVARE 32, which consists of a base station and a mobile station in Antarctic ice sheet, and a real-ti...

Taiyuan University of technology 2018.49(04): DOU Ruofan ,DOU Yinke ,ZHOU Yunxiao, XI Xiaoqin ,MA Chunyan ,CHEN Yan. ;

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Yield Behavior of PA66 Under Combined Loading

Compression, tensile and combined tension/shear tests were performed on PA66 at different strain rates by using a universal material testing.The study shows a marked strain rate sensitivity of the yield and hardening behaviors under different loading on PA66.A modified shear-tension specimen (STS) with the material axis inclining to the loading direction at different angles (30, 40, 45, 60, 75) was presented.The shear stress and normal stress of modified STS were investigated, which indicated tha...

Taiyuan University of technology 2018.49(04): DUAN Qian ,JIN Tao, QIU Ji ,SHU Xuefeng. ;

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An Experimental Study for A Non-invasive Determination Method for the Distensibility of Artery

Arterial distensibility is one of the important indicators to measure the aging and pathological changes of vessels.In order to improve the measurement method, the feasibility and application scope of a nondestructive measurement method were tested and verified.Fourteen measuring points were taken on two different expansionary rubber tubes in test, the real-time pressure, flow rate and diameter of the measuring point were collected, the non-invasive method was used to calculate rubber tubedistens...

Taiyuan University of technology 2018.49(04): CHEN Lingfeng, AN Meiwen, FENG Jiling. ;

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Dynamic Chromatic Number of Bicyclic Graphs

In order to study the dynamic chromatic number of bicyclic graphs in which the two cycles have a common path on which there are some hanging branches, we focus on structuring particular paths etc., obtaining dynamic chromatic number of the above case.The conclusion in this paper perfects the dynamic chromatic number of bicyclic graphs....

Taiyuan University of technology 2018.49(04): SHANG Huahui ,YAN Xiaofang ,MIAO Lianying. ;

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