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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

Links

Shanxi Provincial Education Department

Taiyuan University of Technology

location： home> 2018,49(01)

Fatigue Damage and Acoustic Emission Response of B4C/6061Al Composite Under Cyclic Load

This paper discussed thefatigue behavior and associated acoustic emission response to reveal thefatigue damage evolution of the B4C particle reinforced 6061 Al matrixcomposite.Tension-tension fatigue tests were conducted to obtain the fatiguebehavior of B4C/6061 Al.The hysteresis behavior was monitored under specificloading to study the fatigue damage mechanism of the composite.The fracturesurface of B4C/6061 Al was observed by scanning electron microscope.To gaininsight into the fatigue failure ...

Taiyuan University of technology 2018,49(01): ZHAO Junchaoa,WANG Wenxian,LI Yuli,CHEN Hongsheng. ;

PDFviewed：abstract

Effect of Heat Treatment on Microstructure and Properties of SiC Reinforced YL117 Composites

The dispersed SiC-Al powders were prepared by ball milling method and then hot pressed into the prefabricated block, and SiC reinforced YL117 composites were fabricated by semi-solid stirring casting.The microstructure and mechanical properties of YL117 matrix composites were investigated, where the volume fraction of SiC was 3.5%, 4.5% and 5.5%, separately.Subsequently, the 4.5%SiC/YL117 composites with the best mechanical properties were treated by T6 treatment, and optimal solid solution treat...

Taiyuan University of technology 2018,49(01): CAI Laiqiang ,YOU Zhiyong,ZHANG Tuo ,SI Yaoqiang ,ZHANG Jinshan. ;

PDFviewed：abstract

Synthesis of Fluorescent Carbon Quantum Dots Towards White Light-emitting Diodes Using Acetonitrile

Carbon quantum dots (CQDs) with fluorescent quantum yield of 48.10% were synthesized by solvothermal treatment using citric acid, urea and acetonitrile as carbon source, nitrogen dopant and solvent, respectively.CQDs have the average diameter of 13 nm and good dispersability in solvent.The as-prepared CQD acetonitrile solution, with average fluorescent lifetime of 10.99 ns and red-green-blue spectral composition ratio of 56.09%, exhibits bright blue fluorescence and shows an excitation wavelength...

Taiyuan University of technology 2018,49(01): ZHENG Jingxia, YANG Yongzhen, LIU Xuguang, XU Bingshe. ;

PDFviewed：abstract

Effect of Addition of Samarium on Edge Crack of Mg Alloy During Rolling

Abstract：The edge cracks of Mg alloy sheet occur frequently during rolling.On the basis of the ability of lanthanon to improve alloys structure, different amount of Sm was added in the magnesium alloy.Then the alloy was cast and extruded into composite.The microstructure and mechanical properties of the rolled magnesium alloy slab were analyzed after cold rolling and warm rolling separately.Research shows that:During the cold and worm rolling, the edge crack of magnesium alloy slab was overcome ...

Taiyuan University of technology 2018,49(01): LIU Pengtao,HUANG Qingxue,MA Lifeng,WANG Tao. ;

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Effect of Strong Pulse Current on Microstructure and Mechanical Properties of Deformed Magnesium All

In this paper, effect of strong pulse current on static recrystallization, microstructure and mechanical properties of rolled AZ31 alloy was studied by the orthogonal experiment method.The results show that rolling deformation and pulse width have a significant influence on recrystallization fraction, with the increase of rolling deformation and pulse width, recrystallization fraction increases significantly.Rolling deformation has obvious effect on reducing the average grain size, while pulse wi...

Taiyuan University of technology 2018,49(01): GUO Fenghai, FAN Jianfeng, ZHANG Hua, ZHANG Qiang ,DONG Hongbiao, XU bingshe. ;

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Simulink-based Simulation Research on Control System of Novel Support Structure of Servo Cylinder

Servo hydraulic cylinder is the core component of hydraulic rolling shear, which often requires horizontal articulated installation to output curve force.In order to avoid cylinder seuffing, leakage and insufficient output power caused by the gravity of cylinder itself, a novel support structure in which servo cylinder end hinge, a support cylinder was proposed along with its supporting control system.The control system needs to precisely control the pressure and displacement of the support of li...

Taiyuan University of technology 2018,49(01): MA Qiangjun, HUANG Qingxue, MA Linan, HE Dongping. ;

PDFviewed：abstract

Research on Particle Flowing Property in Flat-Bottomed Silos

The material is transported to the central zone and spread on top of the material already in large-scale enclosed flat-bottomed silo by the screw conveyor until the silo is totally discharged.A silo can store both cohesive and free flowing materials, such as potato starch, flyash, coal and gypsum.Significant benefit of efficient and flexible space utilization and air pollution prevention is thas realized.In this paper, in situation of free flowing and discharging as sisted by screw conveyer, gran...

Taiyuan University of technology 2018,49(01): NIU Xuemei, MENG Wenjun, WANG Aihong. ;

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Study on Reducing Toxic PAHs Content in Coal Tar Pitch by 1, 4-Benzenedimethanol Modification

Coal tar pitch (CTP) was modified with cross-linking agent 1, 4-benzenedimethanol over the catalysis p-toluenesulfonic acid in cyclohexane solvent to reduce toxic PAHs content.The effects of modifier addition amount, catalyst amount, reaction temperature and reaction time on the reduction rate of 16 toxic PAHs monitored by EPA were investigated.The optimum conditions were as follows:6%amount of modifier-to-CTP, 12%amount of catalyst-to-CTP, reaction temperature of 50℃and reaction time of 2 h.Und...

Taiyuan University of technology 2018,49(01): FENG Yonghui, ZHANG Linfeng, LIU Gang, NIU Yanxia, WANG Yugao, SHEN Jun, LI Ruifeng, DU Jiankui, YANG Zhifeng, XU Qingbai. ;

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Catalytic Performances of NiMgAl Catalysts with Mo and Ce in Carbon Dioxide Reforming of Methane

Hydrotalcite-like precursors were synthesized by conventional co-precipitation method.NiMgAl, NiMgAl-Mo and NiMgAl-MoCe composite oxides derived from the calcination of the precursors were employed as catalysts in carbon dioxide reforming of methane for catalytic performances evaluation.The effect of addition of Mo and Ce as promoters on the catalytic activity was mainly investigated, especially on the reactant gas conversion.X-ray diffraction and N2 adsorption-desorption techniques were employed...

Taiyuan University of technology 2018,49(01): DU Yali, CHENG Qiangqiang, LI Xiaojian, LI Xiaodong, HUANG Wei. ;

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Study on the Start-Up and Recovery Performance of an ANAMMOX Filtering Reactor after Substrate Inhib

The quick start-up and recovery performance of an anaerobic ammonia oxidation (ANAMMOX) filtering reactor after substrate inhibition was studied by using an upflow anaerobic sludge bed (UASB) loaded with shale ceramsite.The results indicate that the ANAMMOX reactor could be set up at the 116 th day, and the volume substrate nitrogen removal rate (NRR) was above 0.5 kgNm-3d-1.During whole operation, the ANAMMOX filtering reactor exhibited higher tolerance for free ammonia (FA) and free nitrous aci...

Taiyuan University of technology 2018,49(01): HAN Ming, HE Shilong, WANG Bingbing. ;

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Study on the Adsorption Kinetics and Thermodynamics of Copper on NaClO Modified Activated Carbon Fib

The surface of activated carbon fibers (ACFs) was modified by using sodium hypochlorite in present work to improve the acidic groups on the surface and the removal efficiency of heavy metal ions in water.The adsorption time and temperatures affecting the removal rate of copper (Ⅱ) were analyzed, and results indicate that adsorption equilibrium was obtained within50 minutes and the removal rate increased with increasing temperature.It can be concluded from the fitting results of pseudo-first-orde...

Taiyuan University of technology 2018,49(01): LU Yanhong, ZHU Fang, JIANG Xuemei. ;

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Emission Characteristics of Pollutants from Motor Vehicles in Wuhan Based on MOBILE 6.2

Combined with the environmental parameters and the number of motor vehicle in Wuhan, MOBILE 6.2 was applied to study the localization of emission characteristics of vehicle pollutants and estimate the vehicle pollutant emission factors, and furthermore, account the emission quantity and share rate of different classification vehicle.The results show that the vehicle emission quantity of total HC, CO and NOx was 7.78104, 59.61104 and 6.32104 tons, respectively.The light duty gasoline vehicle (LDGV...

Taiyuan University of technology 2018,49(01): GAO Jun, HU Hui, XING Pan, LI Gang, GU Wei, LIAO Li. ;

PDFviewed：abstract

A Lagged Correlation Oriented Feature Extraction Method for Power Equipment Predictive Maintenance

In this paper, a feature extraction method was proposed to solve the problem of lagged correlation between multi-sensor sequences based on the curve registration model of maximizing the correlation coefficient.The dimensionality reduction is realized in the premise of avoiding the loss of information as far as possible and then a lightweight predictive model is built.The experiment results indicate that our method can effectively reduce training time and lower the computational cost of predictive...

Taiyuan University of technology 2018,49(01): ZHANG Shouli, SU Shen, LIU Chen, HAN Yanbo. ;

PDFviewed：abstract

Fault Prediction for Industrial Process Based on Gaussian Process Model

A new Gaussian processregression based predictive modeling is proposed to realize fault predictionfor the time series data of measured variables in industrial processes.Comparedwith existing techniques, Gaussian process regression model can show theuncertainty of a result, as well as the confidence interval.By constructing thekernel function of Gaussian process model based on a specific data set, andadding the priori information of industrial process, the performance of theproposed model is furth...

Taiyuan University of technology 2018,49(01): YANG Weihui, CHEN Yanping, WEN Fuxi, GAO Cong. ;

PDFviewed：abstract

Interactive Mining of Interesting Co-location Patterns Based on Ontology

In order to find interesting co-location patterns for the user, this paper proposes an ontology-based interactive approach (Ontology-Based Interactive Interesting Co-location Miner, OIICM) .First, ontology is used to improve the integration of domain knowledge.Second, the semantic distance between co-locations is defined.Third, an interactive process is proposed to find interesting co-location patterns.Finally, a filter is designed to reduce the result set.The experimental results on both synthet...

Taiyuan University of technology 2018,49(01): BAO Xuguang, WANG Lizhen, XIAO Qing, ZHAO Jiasong. ;

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Large-Scale Face Image Retrieval based on Deep Residual Embedding Feature

With the improvement of hardware, deep learning features overcome the weakness of traditional man-made feature such as poor robustness and complex retrieval calculation.A coarse-to-fine face image retrieval based on deep learning feature was proposed.First, a face feature extraction model is developed by using nearly four million face images to train the convolutional neural networks.Second, face feature is extracted, stored and clustered.Finally, face retrieval is performed by coarse-to-fine ret...

Taiyuan University of technology 2018,49(01): LU Zongguang, LIU Qingshan, SUN Yubao. ;

PDFviewed：abstract

Indoor Path Plan Generation Algorithm Based on CSI Crowdsourcing Data

Traditional floor planconstruction suffers problems of high trajectory energy consumption and largecumulative error.Therefore, this paper proposed a new construction methodwithout using sensors but useing Wi-Fi signal to sense the movement of people toconstruct an accessible path structure so as to draw the final indoor plan.Theexperimental results show that the method of using CSI to detect the pathstructure in indoor environment is more accurate and lowcost, and the precisionof the constructed ...

Taiyuan University of technology 2018,49(01): DING Yu, WU Chutian. ;

PDFviewed：abstract

A Cooperative Caching Strategy Based on Content Popularity and Node Attributes in CCN

Built-in network cache isan important feature in Content-Centric Networking (CCN) .But existing cachingstrategies make the content distribution uneven, and there is a great room forthe cache efficiency to improve.To make the cached contents more reasonable intemporal and spatial distribution, this paper proposes a collaborative cachingstrategy based on content popularity and node attributes (CPA) .It can choosethe cache content and cache location through the real-time popularity ofcontent and mul...

Taiyuan University of technology 2018,49(01): HUO Yuehua , LIU Yinlong. ;

PDFviewed：abstract

An Improved Krill Herd Algorithm Based on Mutualism and Survival of the Fittest

Aimed at the shortcoming ofeasy plunging into local optimum of krill herd algorithm (KH) in solving highdimensional complex optimization problems, an improved krill herd algorithmbased on mutualism and random disturbance is proposed.First, the algorithm putsthe strategy of mutualism into the standard KH, which enhances the exchange ofparticles information, improves the efficiency of information transfereffectively and increases krill individuals ability of survival.Second, inorder to avoid the pr...

Taiyuan University of technology 2018,49(01): WANG Tao, GAO Yuelin, CAO Kai. ;

PDFviewed：abstract

Research on Wind Power Forecasting Based on Fuzzy Clustering Analysis

Improving short-term windpower forecasting accuracy is an urgent requirement for the development oflarge-scale wind power, and it is also the key to ensuring the integratedoperation of wind power.In this paper, a method to improve the forecastingaccuracy based on clustering is proposed without increasing the complexity ofthe model.First, training samples are processed by the fuzzy C-means clusteringmethod optimized by subtractive clustering.Then the forecasting model basecorresponding to differen...

Taiyuan University of technology 2018,49(01): ZHANG Chuanhui, TIAN Jianyan, GAO Wei, WANG Fang. ;

PDFviewed：abstract