Proceedings of the International Symposium on Mechanical Engineering and Material Science

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85 articles

The stability of dual-PSD based calibration system without its relative location to 3D forming of carbon fiber

Chengzhi Su, Lei Zhong, Chengyun Wang, Huzaifa Khalid, Fangchao Shao
The trajectory accuracy of the carbon fiber 3D forming robots is one of the key factors to ensure the quality of forming. It is well known that carbon fiber 3D forming robots have high repeatability but low accuracy. Compared to conventionally used calibration methods, dual-PSD based methods provide...

The Simulation Study on Deep-sea Microbes Sampling of Holding the In-Situ Pressure Based on the Pressure Compensation with 316L Stainless Steel Accumulator

Wenjie Song, Peng Liu, Qinglin Jiang, Xinjuan Li
This paper proposes a physical model of pressure compensation with accumulator based on the simulation research. The best accumulator can be chosen quickly and reasonably for different sampling systems. The mathematical model about the final pressure of the accumulator is established. The accumulator...

Numerical Analysis Research and Experimental Verification of the Heat Leak of a Cryogenic Vacuum Jacket Valve

Jae-Hoon Lee, Si-Pom Kim, Rock-Won Jeon
The need for natural gases has recently been increasing for energy production and demand. Accordingly, many different studies are now being conducted on ways to supply liquefied natural gases (LNG) and on the valves that are used to supply those gases. Although there are various types of valves that...

Finite Element Analysis and Optimization Design of Combined Vehicle Suspension Girder Lateral Stabilizer Bar Bushing

Yinan Zhu, Daoshuang Ceng, Nawen Lin
The stabilizer bar bushing as one of the most important parts of the automobile shock absorber, because of its complex structure using the rubber, and the rubber has nonlinearity and incompressibility, therefore using traditional numerical analysis method optimization calculation is very difficult. With...

Vibration Detect and Analysis on a Large-scale Coal Screening Factory Building

Daode Qiu, Chao Shen
It puts forward a method of dynamic detection, through studying on the problem of resonance between structure and machine about a large-scale coal screening factory building. The detection result shows that partial flats of this multilayer factory building have reflected a resonance phenomenon between...

Coastline Identification from Remote-sensing Image Using Informative Vector Machine Learning

Guoshao Su, Xiaochun Hu, Liubin Yan, Yanming Liu
For a more rapid and accurate coastline identification method, this paper presents a method of coastline identification on remote-sensing image using Informative Vector Machine and then the coastline of Beihai Silver Beach in Guangxi has been identified. The results show that method of coastline identification...

Research on the determination method of the intermittent grounding faults of shipboard medium voltage power system

Ya-wei Song, Bing Shen, Liang Chen
In order to ensure shipboard medium voltage power system work successfully. In this paper, the existence of intermittent grounding fault of the shipboard power system is analyzed and studied. Meanwhile, A simulation model of shipboard medium voltage power system with multiple branches is built on MATLAB/SIMULINK,...

Wetting behaviors of water droplet on rough metal substrates

Jing Xu, Bin Li, Jiadi Lian, Jing Ni, Jing Xiao
In this paper, an experimental investigation of wetting behaviors of water droplet on rough metal substrates is presented, in order to study the influence of rough structures on contact angles of metal substrates. The static contact angles and contact angles evolution over time are measured with a video...

Analysis to the Potential of Rainwater Resources Utilization in Kunming area

Yu-ling Zou, Jian-wu Ma
Water shortage is very serious in kunming area. Based on the precipitation and evaporation data of 2001-2011 of Kunming provided by Yunnan Meteorological Bureau, the article analyzes the change features of annual, seasonal and monthly rainfall and evaporation over the last 11 years. What's more, by referring...

Application of Computational Fluid Dynamics in Atmospheric EnvironmentÿSimulation: a Case Study in Shenyang, China

Yuan Zhou
Atmospheric environment simulation in urban space plays an important role in the improvement of urban air problems and the sustainable development of the city. Using Remote Sensing (RS) and the spatial analysis technology in Geographic Information System (GIS), combined with the numerical simulation...

Advance on Al2O3 Particulates Reinforced Aluminum Metal Matrix Composites (Al-MMCs) Manufactured by the Power Metallurgy Techniques- Microstructure and Properties

Lina Xu, Xuetao Yue, Fengqing Zhang, Qingbo Tian
Aluminum metal matrix composites (Al-MMCs) with Al2O3 particulates as reinforcement fabricated by the power metallurgy (PM) techniques have gained much attention due to their unique characteristics, which combine the roles of the process method, Al2O3 particles and aluminum matrix. The contents and sizes,...

An Improved DCT Based Color Image Watermarking Scheme

Xiangguang Xiong
In this paper, an improved blind color image watermarking algorithm based on relationship embedding strategy is proposed. Firstly, the original RGB color image is transformed into YCbCr color space. Secondly, the Y channel of YCbCr color space is divided blocks sized 8ž8, and then perform two dimensional...

Implementing Computer Aided Material Design of Multiple Cursors for Disabled People with InLinPreRa

Ching-Tien Shih, Shu-Chen Hsu
Through adjusting the curriculum, comprehensive learning environment design, and information technology aids to effectively integrate disabled students with learning, in order to assist them to control environment or communicate with people, and to improve their ability of independent living. Orange...

Punching Shear Strength Model for RC Slab-Column Connection Based on Multiaxial Strength Theory of Concrete

H.Y. Pang, Z.J. Wang, C.T. Huang, S. Pu
A strength model was presented to give the mechanical explanation of the punching phenomenon, and to predict the punching shear strength of the interior reinforced concrete (RC) slab-column connection without shear reinforcement. The model assumes that the punching shear force is resisted mainly by the...

Estimation of the thermal loads on buildings with CAD systems support

Alexis Cordov,s Garc¡a, Gerardo M. Ramos Gordon, Jorge A. Mora Aguilar, Arlys M. Lastre Aleaga
The goal of this paper is the design and implementation of an algorithm for estimating thermal loads in a civil construction, in which the capture geometric information of the architectural plan of a building created in a CAD system (Computer Aided Design), and the calculation of thermal loads in the...

Effect of Surface Roughness on the Determination of the Creep Properties of Material by Using Three Points Bending Creep Test

Shifeng Wen, Sibo Zhou, Xianglei Liu
The purpose of this paper is to understand the effect of surface roughness of the specimen on obtaining the creep characteristics by using bending creep tests. To this aim, a numerical study has been performed on the creep damage development of the specimen by implementing the different surface roughness...

Preparation and Characterization of CA/GO Mixed Matrix Forward Osmosis Membranes

X.J. Wang, S.Q. Liu, S.F. Hou, P. Lu, K. Hou, Z.P. Wang, L.G. Wang
In this paper, a novel mixed matrix forward osmosis (FO) membrane was fabricated by introducing graphene oxide (GO) into the cellulose acetate (CA)-based casting solution using phase inversion methods. The factors---GO content and blending temperature were tested for their effects on pure water flux...

Welding Material Selection for a Specific Butt V-Weld by Means of Assisted Stress and Fatigue Calculations

Maria-Cristina Dijm rescu, Manuela-Roxana Dijm rescu
When talking about welding joints, an important issue is choosing the proper welding material in order to comply with design requirements, if possible, without undertaking physical tests. The present research focuses on an assisted approach for the selection of the proper welding material for a specific...

The influence of oxygen pressure on the crystallographic structure and magnetic properties of BaM films on Al2O3(0001) substrate

Hui Zheng, Mangui Han, Peng Zheng, Liang Zheng, Jiangxia Deng, Huibin Qin
In this work, hexagonal barium ferrite thin films have been deposited on Al2O3(0001) substrates by pulsed laser deposition. The influence of oxygen pressure on the crystallographic structure and magnetic properties of BaM films has been studied. X-ray diffraction theta-2theta reveals the films have a...

Correction of axis tilt error for 40Cr ring gear measurement based on collinear measuring heads

Chengzhi Su, Fangchao Shao, Biao Zhou, Chun Yan, Lei Zhong
The ring gear and flywheel are interference fit. In order to verify whether magnitude of interference meets the processing requirements, the size change of the 40Cr ring gear before and after heating is measured. Measurement accuracy of ring gear measurement equipment should reach 0.01mm. Due to the...

The Influence of Plasticizerson the Composition of Cement Stone Hydration Products

Oleg Vyacheslavovich Tarakanov, Elena Aleksandrovna Belyakova, Vladimir Ivanovich Kalashnikov, Olga Vasilyevna Grintsova, Nikolai Ivanovich Makridin
The influence of polycarboxylate superplasticizerson composition changes of silicate and aluminate cement phases is analyzed. The retarding effect of organic additives on silicate phases hydration and stabilizing effect of additives on calcium metastable hydroaluminates and ettringite isestablished

The research on the response of the structure and the load of gantry cranes cylindrical structures based on strain-measuring method

Aihua Jiang, Xianyuan Deng, Zhongliang Guo, Shan He
In this paper, a shipbuilding gantry crane serviced for up to 18 years is studied; the strain-measuring method is used for testing and analyzing the response of the structure and the load about the main force component-cylindrical structural. By arranging the measuring point 90 ø to each other on the...

Analysis of Natural Frequency Sensitivity of Truck Body

Xue Liu, Qing Shao, Tao Xu, Guikai Guo
Sensitivity is extremely important in computer aided material and structural design. The present paper focuses on the sensitivity with respect to the design variables of truck body. This paper proposes a solution procedure of truck body for natural frequency sensitivity calculation in vibration analysis...

The research of model on the apparent viscosity of sludge

Y.Z. Xue, B. Lou, W. Qian
The viscosity of sludge not only affects its transport properties, but also the drying efficiency. In the paper, the sludge property of apparent viscosity was studied with the different types of sludge moistureÿcontent ofÿsludge and temperature with the help of NDJ series digital viscometer. The results...

Research on Current Control Technology of Fine Plasma Cutting

Guoping Li, Qi Cao, Yujian Fu
The precision control of cutting current is the important performance index of the plasma cutting power supply, so the study of plasma cutting current control strategy have great significance. This paper first summarizes the development situation of plasma cutting power supply, and the domestic plasma...

The Dynamic Analysis of Tension Stringing in Transmission Lines Based on ADAMS

Qi Xiao, Hailing Zhao, Shuai Lu
In recent years, with the power grid and ultra-high voltage power transmission project increased, tension stringing is taking an important part in transmission project. Due to the shortcomings of traditional theoretical formulas, it is not precisely to reflect the dynamic tension of wires. In this paper,...

Method of Evaluation of Forestry Machine Roll-over Protective Structure Efficiency

Alexander V. Pitukhin, Igor G Skobtsov, Veniamin N. Shilovskiy, Oksana L. Dobrynina
Current standards in the field of self-propelled machinery for forestry require equipping tractor cabins with roll-over protective structures (ROPS). It is necessary to reduce the risk of operator's injuries caused by tractor rollovers or falling trees. This study deals with the investigation of forest...

The Design of a Heavy-load Palletizing Robotic Structure for Coating Handling

Weixiong Xu, Jing Cao, Xiaogeng Nie
Heavy load palletizing robot in solving labor shortage, improve labor productivity, reduce production cost and the labor intensity of workers, improve the production environment, etc. It is of great significance. This article expounds the heavy load of palletizing robot working principle, structure and...

Method and Software for Modeling the Building Materials as Dispersions

Vladimir Alexeevich Smirnov, Evgenij Valerjevich Korolev, Alexandr Viktorovich Evstigneev, Olga Igorevna Poddaeva
Particle system dynamics is the well known method that can be used in wide range of spatial scales - from molecular to astronomic. However, numerical experimentation with constructional composites requires adequate representation of peculiar forces that are due to solvation shells, steric conditions...

Light Weight Medium (Pottery Spherical) Cultivation of Plants Used in Green Roof Feasibility Studies

Chiou-Chuan Chen, Yi-Hong Pengb, Chun-Lin Chen, Chiou-Chuan Lee
We tested 8 plants and 3 medium and tested pottery spherical base, thus achieving the results.The green coverage for light media S2 (pottery spherical to sandy loam is 8:2) is suitable for Alpinia speciosa the best growth, followed is Zoysia matrella, with Duranta repens as the third. The green coverage...

Effect of Turntable Structure on Electromechanical Characteristics of Laser Tracker System

Erfang Cao, Wenji She, Liang Zhou
Laser tracker is composed of a mechanical structure and a servo control system. And the characteristics of them all affect the error and stability of the laser tracker measurement system. The cut-off frequency and the response speed are important index to characterize the system performance. Among them,...

Research of Portal Crane Vibration Modal Analysis

Xianyuan Deng, Zhongliang Guo, Aihua Jiang, Shan He
Portal crane is an important port production machinery what frequently work in moist environment leads to greater structural damage. The weight of the metal structure is usually 60% to 90% of the whole weight. Steel Q235B material in the early is widely used in the portal crane design and manufacture....

Research on friction stir welded joints of Copper to Magnesium alloy

Yuhua Chen, Jilin Xie, Wenming Cao
Dissimilar magnesium alloy AZ31 and pure copper sheets with a thickness of 5mm were successfully friction stir welded. Microstructure and mechanical properties of the butt joints were investigated. Complicated microstructure was formed in the nugget zone, in which vortex-like pattern and lamella structure...

The Discussion of the further Studies of the Magnetic Suspension Vibration Isolator

Qiang Li, Shaoyan Wei, Zhennan Liao, Honglin Jin
The vibration isolators play an important role in the field of high resolution metrology and manufacturing, optical, physical and chemical experiments. Magnetic suspension vibration isolator (MSVI) is an efficient method to suppress the oscillations in vacuum environment. This paper firstly presents...

Design of the 4-DOF Parallel Robot Control System Based on EtherCAT

Cunfeng Kang, Yukun Zheng
This design includes both the hardware system and software system. The control system can not only achieve the motion control but also can realize simulation. Hardware system is constituted by Parallel Robot Body, Embedded IPC (Industrial Personal Computer), servo drive and motor system, EtherCAT module...

Reliability Prediction for CNC Machine of Spindle System

Xiaocui Z, Fei C, Jili W, Zhaojun Y, Guofa L, Z Xinge
Grey prediction of CNC machine spindle system failure is modeled with GM(1,1) grey prediction as data accumulation weaken randomness and strengthen regularity. The model result provides preventative maintenance of CNC machine spindle system with theoretical foundation. The example analysis shows that...

A Millimeter-Scale Electrostatic Flapping-wing Actuator with High Lift-to-Weight Ratio

Yi Yang
We present a millimeter-scale, 3mg-weight electrostatic flapping-wing actuator which can generate lift force of 1.5mg under a stroke frequency of 80Hz, and makes the lift-to-weight ratio reach 0.5. As such, this work makes a key step in achieving electrostatic actuated FMAV's autonomous flight

Influence of The Smoothing Parameter in The Re-initialization Equation on The Level Set Interface-capturing

Zhilin Liu, Huang Yong
The level set method is frequently used to simulate and capture the moving interface in the molten metal casting and forming field. However, the level set function has to be re-initialized after several time-steps. And influence of the smoothing parameter on numerical accuracy of the moving interface-capturing...

A Study on Microstructure of AA2219 Friction Stir Welded Joint

Ho-Sung Lee, Jong-Hoon Yoon, Joon-Tae Yoo, Kyung-Ju Min
Friction Stir Welding (FSW) is an environment friendly solid-state joining technology that uses a rotating tool to generate frictional heat and plastic deformation with mixing of the soft material by the pin along the welding line. The advantages are low distortion, lack of traditional defects commonly...

On the Determination of the Threshold Content of Fibrous Nanomodifier

Vladimir Alexeevich Smirnov, Engenij Valerjevich Korolev, Alexandr Viktorovich Evstigneev
Currently, numerous specific methods directed to the improvement of the building materials are developed. Many of such methods are intrinsically the implementations of the nanotechnology; the random reinforcement by nanoscale fibers is a well known way for the enhancement of operational properties. The...

Effect of ultrasonic cavitation on the wetting and reaction of Al-Ti/C interface

Y.L. Li, L.Z. He, J.T. Zhao
Al-Ti-C alloy is a kind of fine refinement agent. However, the wetting of Al/C interface and TiC synthesis are the key technical problems to be solved in the preparation of Al-Ti-C grain refinement. In this paper, the acoustic cavitation effect was used to improve the wettability of Al-Ti/C interface,...

Materials Forming of Dolphin Model for Hydrodynamic Research Based on the 3D Printing Technology

Heng Zhang, Jiajun Chen, Zhe Wu, Gucheng Zhu, Zhiguo Zhang
Traditional manufacturing techniques used for developing the models for hydrodynamic research are slow and costly. Based on the development of current technology, 3D printing technology could be the fastest way to generate the model for with high accuracy for experimental test. With the help of 3D printing...

Fiber Optic Sensors Materials based Spontaneous Combustion Detection in Goaf Areas

Enji Sun
The main objective of this paper is to provide a possible monitoring system, which includes multiple sensors such as fiber optic temperature sensor, gas sensor and differential absorptive methane optic fiber sensor. Optic fiber sensors offer a number of unique advantages for safety monitoring in explosive...

Design and Topology Optimization of Collimation Frame for Two-Dimensional Turntable

Yongqiang Zhang, Zhaohui Liu, Zhiguo Li
Space two-dimensional turntable is the main load-bearing structure of space photoelectric detection equipment, and collimation frame is the key support component of turntable, so its stiffness characteristics are vital for the performance of turntable. Therefore, the structure of collimation frame was...

System Reliability Analysis of Half-through Concrete-filled Steel Tubular Arch Bridge Based on Optimization Technique

Lv Jing
The object of this paper analyzes the reliability of half-through concrete-filled steel tubular arch bridges. Load and resistance parameters are treated as random variables. The statistical parameters are based on the available literature, test data and survey results. Reliability indices of main components...

Advances in Study on Structure of Polysaccharide

Miao Yu, Yue Cao, Guosong Xin, Chenfeng Ji, Shiyong Gao, Xiang Zou, Zheng Qi
Polysaccharide has many biological functions, such as anti-tumor, anti-virus and so on. The function of polysaccharide is closely related to its structure. The structure of polysaccharides can be classified into primary structure and advanced structure. There are many methods for the analysis of polysaccharide...

"San Cai" Human Factors Analysis Model of Civil Aviation Maintenance

Xiaojin Han, Linlin Wang
Two famous civil aviation accident Human Factors analysis models SHELL model and Reason model were introduced in this article. The advantages and disadvantages of the models were both discussed. After that, a new Human Factors analysis model of civil aviation maintenance was proposed, which is named...

Phase-Shifting Control of Double Pulse in Harmonic Elimination

Wei Peng, Junghong Zhang, Jianxin Gao, Guangyi Li
With the wide usage of electronic devices, harmonic wave is becoming worse. A method of Phase-Shifting Control of Double Pulse (PSCDP) is introduced in this paper. In continuous conduction mode, mathematical model between harmonic and phase-shifting is built, FFT is used to evaluate the harmonic content...

Experimental Investigation of Oblique Laser Shock Processing on Aero-engine Fan Shaft

Peiyu Zhang, Cheng Wang, Yan Chai
The circular bead of aero-engine fan shaft was obliquely shocked by laser shock processing (LSP). After oblique laser shocked, the residual stress and microstructure characteristic of fan shaft were investigated and analyzed. The rotary bending fatigue tests and fracture analysis were also conducted....

Reliability adaptive modeling method for CNC Machine Tools based on kernel function

Jili W, Dingyu Y, Xiaocui Z, Zhaojun Y, Guofa L
A reliability adaptive modeling method for CNC Machine Tools based on kernel function is proposed. Choosing Gaussian distribution as the kernel function, the optimal model with least integral square error as the objective is established, and cross-validation method and traversal search method are used...