bluuebunny/crossref_metadata_2025 huggingface dataset:
Safety Device Applied in the Weight Belt for Recreational Scuba Dive
Authors: Kawamoto Jr. L.T. , Kawamoto W.O.
Published: October 2013

In recreational scuba diving, vital equipment is the weight belt which consists in a resistant belt where blocks of lead are fixed for floating balance and for release so that in emergency cases it is possible to rise to the surface more easily. However in some obese divers, because waist circumference is bigger than the hip, the equipment may accidently slipping down the legs causing traumas and even death. The equipment cant also be fixed in a permanent way in the dives body, because in emergency cases its intentional release may be necessary. There are buoyancy compensator vests with integrated weights, which would solve the problem, but they are too expensive. Therefore a safety device applied in the weight belt was developed for recreational diving to be used by obese divers. The device was successfully validated with 10 obese divers who had difficulty using the weight belt and a patent was requested.
High Speed Golf Ball Impact on a Substrate
Authors: Pincott D. , Blicblau A.S.
Published: October 2013

This project aims to investigate the effect impacting a high speed golf ball on TiN coated metal plate, a simulated golf club head. It was found that the surface coating caused greater deformation of the golf ball. It can be said that a club with this coating will absorb less energy from the impact. The result of this is that the energy will that was not absorbed by the club threw deformation will remain in the golf ball. This extra energy will be transformed into two forms of kinetic energy. The other will be used up by the forces acting on the ball during flight. This research is important as large golf club and golf ball companies have great interest and motivation to further their understanding of new ways to improve their golf clubs.
Research on the Evolution of Golf Equipment Development
Authors: Shao Xue Yun , Chen Xiao Rong
Published: October 2013

Based on literature review and logic analysis, we sorts out golf equipment including golf apparel, golf clubs and golf balls in this paper. We also describe the detailed evolution process of the related golf equipments, which will give people a comprehensive understanding of golf development. Another objective of this paper is to popularize golf culture, and give a guideline for the development of the domestic golf equipment market.
The Development of the Rugby Scrum Training Equipment
Authors: Teng Jin Ru , Song Ya Wei , Wang Tao
Published: October 2013

This article is in view of the special trainer which depends on the technology of Scrum rugby movement. It makes training quantified and combines training and monitoring. In close coordination with the coaches, it successfully develops rugby Scrum special strength training of test equipment by combing movement biology mechanics, mechanical design and manufacturing, computer technology, human body engineering and other professional technology. By Real-time observation of athletes technical action of various forces when doing Scrum, it can achieve real-time monitoring, diagnosis, and correction of Scrum training action, in order to achieve Scrum techniques of quantitative and refined training, and to improve football Scrum a better effect. The developed Scrum special training can be used not only in training and scientific research, but can be used in normal training and rehabilitation training.
Hardware Design of College Students' Physical Activity Energy Monitor
Authors: Luo Qi , Zheng Wei Tao
Published: October 2013

The hardware structure of college students physical activity energy monitor has been designed through the design method of electronic circuit consists of microprocessor module, 3D acceleration sensor module, temperature sensor module, a pulse sensor module, the large capacity memory module, USB interface module, keyboard and LCD display module, the wireless signal transmission module, etc.
Software to Train Scuba Dive Procedures
Authors: Kawamoto L.T. , Slaets A.F.F.
Published: October 2013

Safety procedures are explained during lectures in basic diving courses, but these rules are often counterintuitive and difficult to remember; many accidents occur because divers do not put into practice what they have been taught. Problems also occur in discovery dives made by tourists who receive quick instructions and who are accompanied by an instructor. Accident rates are higher during basic courses and discovery dives than they are in other types of recreational diving. A virtual environment (VEST) was developed that simulates the more common accidents, provides feedback when procedures are not followed and shows the death of characters to educate divers about the need to comply with safety procedures and to reduce learning time. Evaluations were conducted with 120 participants. Of these participants, 60 received only theoretical instruction, and 60 received the same instructions, as well as VEST support. A purpose-built virtual environment and questionnaires were used to evaluate learning and behavior. The usability and interfaces were considered to be satisfactory. Volunteers who received lessons and instructions that were supported by the developed VEST exhibited better results than did those who only received theoretical instruction. There was, however, no statistically significant difference between the groups receiving complete and superficial theoretical instruction. The method provided proved efficient, enjoyable and easy to learn and made divers aware of the importance of following safety procedures. The good results achieved by VEST in supporting learning does not necessarily mean that the user will put this learning into practice, but the results do demonstrate that it is a better form of learning than verbal instruction.
The Application of Virtual Reality Technology in Rope-Ladder Training
Authors: Cui Tie Cheng , Peng Yong Qiang , Sun Yue
Published: October 2013

The method of rope-ladder training can effectively improves the participants' mobile ability and sensitivity, and for playability of the method's practice way makes it easy way to interest the participants. With the introduction rope-ladder training in school, we can help the students sports teams to train and improve their physical quality. In this paper, the design ideas, development process and the key technologies of the rope-ladder teaching assistant system in virtual reality technology are described. The rope-ladder teaching assistant system developed by virtual reality technology can effectively resolve the difficulties in the teaching and break the time and space constraints of sports teaching, and expand the methods of sports teaching which is conducive to the improvement of practice effect.
Experimental Investigation of Nano-Composite Coated Stainless Steel (316L) Surfaces under Unidirectional Sliding
Authors: Suresh R. , Shruthi P. , Kumar R. Sunil , Siva J. , Ananth M. Prem , Ramesh Rajagopal
Published: October 2013

This work proposes the investigation of nanosized Titanium Aluminum Nitride (TiAlN) on the Stainless Steel (316L) substrate. A chromium interlayer has been applied over the modified surface which will act as an interlayer between the substrate and hard composite coating. The composite coating was prepared by Magnetron Sputtered-Physical Vapour Deposition (PVD) on chromium coated lapped and textured surfaces of stainless steel substrate. Scratch test was performed to characterize the adherence of the coatings on the substrate. TiAlN surface coating over the textured surface exhibits higher adherence than the lapped surface coating surface. The tribological performance of the wear resistant coatings on lapped and textured surfaces was experimentally investigated by pin on disc tribometer at dry sliding contact conditions under various normal loads. The testing results were compared and the results showed that TiAlN coating on textured surfaces exhibited lower friction coefficient and wear rate than lapped coating surfaces under same testing conditions. Sliding wear characteristics such as coefficient of friction and specific wear rate were investigated.
Analysis on Sports Shoes Design under the Guidance of the Green Design Concept
Authors: Cui Li Na
Published: October 2013

This paper gives introduction of the meaning of green design, as we have to realize all kinds of design should follow the principle of saving energy and emission reduction. Secondly further analysis on sports hoes design under the guidance of green design idea is given, such as style design, design methods and means, the choice of environmental materials and easy matching performance with apparel. And finally this paper concludes that environmental friendly green design products and consumption will become the future markets mainstream orientation.
Grey Relational Analysis on Different Phases of Men's 100m Dash
Authors: Shen Wei Hua , Wang Xioa Fei , Huang Chang Mei
Published: October 2013

With the help of the grey relational analysis, the purpose of this study was to find the principal factors in the different phases of Mens 100m Dash. Data in the split times (sec) were from 14 results of mens 100m dash in the 12th IAAF World Championships in Athletics at the Olympic Stadium in Berlin, all the results were less or within 10 second, and then subjected to the grey relational analysis. According to the GRG and GRW, the most important factors of 100m dash are phases of high speed (T40~60m; GRG0.9226 and GRW19.24%), transition (T20~40m; GRG0.9132 and GRW19.04%) and maximizing speed (T60~80m; GRG0.9047 and GRW18.86%); the more important factor is the phase of maintaining speed (T80~100m; GRG0.8990 and GRW18.74%); and the less important factors are the phases of the start (RT; GRG0.5551 and GRW11.57%) and acceleration (T0~20m; GRG0.6018 and GRW12.55%). The study indicates the most important running phase is the high speed (T40~60m), but the transition phase (T20~40m) was provided with the more important influence to the course of 100m dash, even than that of maintaining speed phase, which is the most underappreciated phase. Therefore, sprinters need to focus on the phase and take a lot of discipline to improve upon it.
Analysis on Issues in Sports Equipment Management and Countermeasures in Guizhou Colleges and Universities
Authors: Zhang Long , Yao Guang Hui , Yao Kong Yun
Published: October 2013

Miscellaneous categories, multiple varieties and different specifications of college sports equipment induce high requirement to sports equipment management, leaving intractable problems for managerial personnel. This paper is intended to analyze the main issues in sports equipment management in Guizhou colleges and universities and causes of these problems. Besides, some primary countermeasures are provided further in this paper.
Study on Public Sports Facility Layout Planning
Authors: Sun Tie Huan
Published: October 2013

Public sports facilities are to ensure the quality of urban residents life, and are the carrier of the national fitness plan, and is the basis to improve the physical quality. Reasonable public sports facilities planning layout, can promote the improvement of the urban space layout structure, and realize the self-optimization and benign development of urban system. In this paper, the urban public sports facilities layout plans as the research key, analysis of various urban public sports facilities layout planning factors. Combined with planning, construction experience, discusses sports facilities layout planning models and planning layout methods.
Application of Imagery Training Method in College Table Tennis Elective Course
Authors: Xu Shu Ping
Published: October 2013

Reforming the teaching methods is an important task of the current education reform. The theory exploration and practice has a history of about 100 years and it is being recognized by the world. As an effective teaching and training method, and imagery training has become one of the psychological training methods in sports practice. In this paper, the author introduces the application of imagery training method in the college table tennis elective course and compares the effect of imagery training method and traditional teaching method. The results show that combining imagery training method and other teaching methods can make students obtain significantly higher score on both the bout quantity and the motion quality in the following two main techniques: forehand attack and backhand push-block. These results indicate that better teaching effects can be obtained by using the imagery training method in the teaching of college table tennis elective course. Thus, the author recommends that teachers attach enough importance to imagery training method and use it more often.
The "Black Revolution" of Sports Equipment: Application of Carbon Fiber Reinforced Plastics (CFRP)
Authors: Zhang Qi
Published: October 2013

In recent years, the carbon fiber is added to more and more sports equipment, and it even becomes major materials for some equipment. Carbon fiber sets off a Black Revolution in the aspect of sports equipment. This article briefly describes the characteristics of the carbon fiber, and analyzes its application in such sports equipment as badminton racket, tennis rackets, fishing rod, ping pong rackets, etc.
Analytical Test Methods Used to Characterize Granular Composite Sport Surface Materials
Authors: Bridge J.W. , Mahaffey C.A. , Peterson M.L.
Published: October 2013

Thoroughbred horse racetracks consisting of granular composite materials, also referred to as synthetic tracks, were developed for the racing industry with the goal of increasing safety to horses and jockeys and reducing maintenance efforts. These granular composites consist of sand, polymer fiber, and rubber bound together with a high-oil wax binder. The mechanical properties of these surfaces are significantly influenced by material composition, environmental factors, and surface maintenance procedures, and are susceptible to both environmental and mechanical-induced degradation over time. Using a combination of material analytical tests, surface mechanical and chemical properties and changes to them are assessed. Tests used to characterize the surface materials composition include Soxhlet wax extraction, wax oil extraction and sand morphology. Additionally, water-holding capacity, wax differential scanning calorimetry (DSC), gas chromatography (GC), Fourier transform infrared spectroscopy (FTIR), and x-ray fluorescence (XRF) provide insight to the thermal mechanical response of these surfaces as temperature and track composition/conditions change. Pertinent test results for two U.S. synthetic racetracks are included in this work to demonstrate the practicality of using this suite of testing. These tests and results provide a basis for racetrack maintenance decisions with the goal of achieving a more consistent racing surface that should ultimately reduce equine, and by extension jockey, injuries.
Correlation of Fe-Rich Defect Centre and Minority Carrier Lifetime in p-Type Multicrystalline Silicon
Authors: Jahangir Alam Mohammad , Ziaur Rahman Mohammad
Published: October 2013

A comparative study has been made to analyze the impact of interstitial iron in minority carrier lifetime of multicrystalline silicon (mc-Si). It is shown that iron plays a negative role and is considered very detrimental for minority carrier recombination lifetime. The analytical results of this study are aligned with the spatially resolved imaging analysis of iron rich mc-Si.
Structural State and Mechanical Characteristics of the ZrN Films Prepared by Sputtering
Authors: Liu Chien Cheng , Liu Kuang I , Chou Yung Chih , Cheng Yung Mao , Lin Chih Lung
Published: October 2013

ZrN films were prepared by magnetron sputtering on die steel substrates. The objective of this study was to investigate the effect of nitrogen flow rate on the microstructure ,morphology, nanohardness properties determined by X-ray diffraction, field-emission scanning electron microscope, nanoindentation, and pin-on-disk, respectively. The XRD shows that ZrN has (111) and (200) preferred orientation under lower nitrogen flow rates. The surface of coatings revealed smaller grains and uniform dense under lower nitrogen flow rates. With increasing the nitrogen flow rates, this result showed ZrN films lead to poor mechanical properties and hardness values. However, films consisted of up high ernitrogen flow rate had much lower friction coefficient.
Stress and Strain Characteristics of Aluminum Equal Channel Angular Pressing
Authors: Li J.H. , Yu Z.J. , Jiang D.P. , Chen W.
Published: October 2013

To investigate the stress and strain distribution characteristics of equal channel angular pressing (ECAP), rigid-plastic finite element was used to simulate the aluminum ECAP processing. The simulation results showed that equivalent stress distribution of the sample was uneven, and severe stress concentration was at the channel corner. Equivalent strain distribution of the sample was also uneven, and the deformed sample can be roughly divided as three deformation regions: the front, the middle and the end. At the region of front, the plasctic deformation was extremely uneven and the gradient value of equivalent strain was relatively large, at the region of middle, the plasctic deformation was stable and uniform, at the region of end, there existed material reverse flow the sample contacted with the plunger and bearing heavy three-dimensional compressive stress.
Lifetime Prediction of EPU/Al Low Infrared Emissivity Coatings in Damp Heat
Authors: Yan Xiao Xing , Xu Guo Yue , Wu Yan , Wu Zhi Hui
Published: October 2013

Stability of epoxy-polyurethane (EPU)/aluminum (Al) coatings (the change of coating emissivity during damp heat) was studied after exposure to the damp-heat test for varying lengths of time. We found that the emissivity increased with increasing heating temperature and time in damp heat. In addition, Arrhenius relationship was employed to calculate the lifetime of EPU/Al low infrared emissivity coatings in damp heat. Compared with observation data in damp heat, the calculated results validated the effectiveness of the model predictions, and showed that EPU/Al low infrared emissivity coatings exhibited good resistance to damp heat.
Effect of Deposition Power on the Structure Properties of Microcrystalline Silicon Thin Films
Authors: Chen Jing Wei , Zhao Lei , Diao Hong Wei , Zhou Su , Wang Ge , Wang Wen Jing
Published: October 2013

Microcrystalline silicon thin films prepared by plasma enhanced chemical vapor deposition (PECVD). Effects of deposition power on the microstructure properties of the thin films were investigated by Raman spectrometry, Fourier transform infrared absorption spectroscopy (FTIR) and atomic force microscopy (AFM). With increasing deposition power from 100 W to 900 W, the growth rate increased from 0.75Å/s to 2.96Å/s. The Raman spectrometry measurements showed that the peak of all films is nearby at 514 nm. The FTIR spectroscopic analysis exhibit that with power increasing the intensities of both the (Si-H)nstretching mode component at 2100cm-1and wagging mode component at 620cm-1increase. The surface morphology of the films using the AFM showed the surface roughness and voids of the films increase with deposition power increasing.
70-150μm Dust Particles on the Reliability of Electrical Contact in Static Conditions
Authors: Yin Quan , Liu Sheng Chun , Xu Liang Jun
Published: October 2013

Dust particles from the air in the electrical contact caused more and more problems. To a large extent reduce the reliability of the system. In order to study the impact of these issues, we need to analyze and discuss the dust particles on contact performance of electrical contact materials. In this paper, under static conditions with 70-150μm of the silica particles analyzed and discussed, represented by the pressure difference, particle size, being suppressed will lead to a different location of the static contact resistance and analysis of particle size of the scope of what the content of easily crushed. Experimental results show that the particle size and the location of the different particles are pressed, will make a change in contact resistance.
The Study on the Preparation and Properties of Sol-Gel Derived Antireflective Coating for Solar Glass
Authors: Li Zhi Jin , Chen Qi
Published: October 2013

The single side SiO2 antireflective film was prepared by roller coating method on solar glass, and the SiO2 sol was prepared using sol-gel method via two steps reactions. The thickness of the film can be adjusted by controlling the roller speed, and the variation of the film thickness can alter the transmittance peak position. The transmittance of single-sided coated glass increased 2.71% compared to un-coated solar glass. The relative humidity of coating environment affects the film-coating process. The light transmittance of the antireflective film coated glass reached the best value when the temperature and relative humidity were 22°C and 40%, respectively.
Study on Mechanical Behavior of Masonry Wall in School Building Reinforced by CFRP
Authors: Lin Hong , Yang Zhao , Wang Xu Wen , Ke Xiang
Published: October 2013

CFRP is a new kind of building materials popularly used in structure strengthening. In order to study the reinforcement technique for masonry walls of school buildings, the walls with window opening strengthened by CFRP were studied in the paper. Based on the experiment result, the finite element simulation and theoretical calculation analysis were done to study the mechanical behavior and shear capacity of the wall with window opening reinforced by CFRP. The CFRP pasted at the corner of window opening were proved to be effectively in improving shear capacity of the walls, and simple calculation formulas of shear capacity were provided in the paper, which proved to be accurate.
Studies on Impact Force Caused by Sloshing of New Type Water Transporting Tank on Basis of ADINA
Authors: Xu Cong Qi , Jia Gui Zhi , Gao Rui Lin , Gao Xin
Published: October 2013

A new type anti-surge water transporting vehicle is designed for safety and stability of the vehicle during the driving. In order to study the safety and stability of the water transporting tank, the impact force caused by sloshing of the water transporting vehicle during normal driving, climbing and braking is analyzed respectively; Finally, a simulation test on the vehicle along a road 7000km long is carried out. The results show that the water transporting vehicle is not damaged and overturned under various kinds of worse driving conditions, such as on the road and field road, etc., thus it can meet requirements for safety and stability when driving under all kinds of road conditions.
Study on Spheroidization of Niobium Powders by RF Plasma Processing
Authors: Wang Jian Jun , Hao Jun Jie , Guo Zhi Meng
Published: October 2013

Spherical niobium powders were synthesized by (RF) argon plasma with irregular niobium powders in this paper. The objective of the present work was to investigate how the feeding rate influence the spheroidization efficiency. The phase composition, morphology and particle size distribution of the powders before and after spheroidization were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and laser micron sizer (LMS). The results show that niobium powders after plasma processing have good dispersity and smooth surfaces, and their spheroidization ratio is almost 100%. The apparent density and flowability of the powder with the spheroidization efficiency 100% is 4.35 g/cm3 and 12.51 s/(50g), respectively. With the increasing of the feeding rate, the spheroidization ratio of niobium powders drops gradually.
Development of Robotic Spraying System in Narrow Space
Authors: Chen Yan , Chen Wen Zhuo , Chen Ken , Shao Jun Yi , Zhang Wei Ming
Published: October 2013

The coating of the intermediate coating on the inner surface in narrow space is characterized by high solid, high density, sedimentation. LVMP process is qualified and adopted to spray this high solid coating. The designed pressure feed system is composed of a fluid system and a pneumatic system. The former is used to feed coatings into the spray gun, circulate coating and agitate coating, while the latter is used to actuate and control the fluid system and provide high pressure air as cylinder air, atomization air and pattern air. The experiments show that the robotic spraying system could satisfy the work requirements including good stabilization, no settling, ignorable pressure fluctuation and fine atomization in narrow space.
Process of Shaking Ladles for Producing Ferroalloy
Authors: Zhang Jun , Ni Shan Qiang , Chu Shao Jun
Published: October 2013

With more extensive application of shaking ladles in producing ferroalloy, the investigation on the equipment and process of shaking ladles is reviewed and the motion of two-phase flow is analyzed. Some issues related to the use of shaking ladles, which need to be further explored, were pointed out to direct the design of large shaking ladles.
Reliability Analysis on Competitive Failure Processes under Multiple Failure Modes
Authors: Hao Hui Bing , Su Chun
Published: October 2013

In this article, a new multiple competing failure models proposed, in which multiple degradation processes and random shocks are considered. The shocks have a significant impact on system reliability, and the system reliability under not considering the impact of shocks is much higher than the impact of shocks is considered. In addition, the influences of the correlation among different degradation processes are also considered in this article. We can find that the reliability with considering the dependent case is higher than the independent case reliability. Thus the dependence of the two degradation processes is non-negligible. A numerical example with reliability analysis and sensitivity analysis is discussed to illustrate the proposed the new model.
Study on Impacts of the Power Spinning Process on the Properties of Hastelloy C-276
Authors: Zhang Zong
Published: October 2013

After a Hastelloy C-276 cylindrical part goes through the power spinning process, X-ray detection, and tensile and corrosion tests, the directivity of grains in the cylindrical part is enhanced, and the weld zone strength and post-annealing corrosion resistance greatly promoted.
Electromagnetic Protection Method Based on Sorting Technique
Authors: Zhang Yong Qiang , Wu Ling Sheng , Xu Bing Xun
Published: October 2013

Under complex electromagnetic environment, various equipment is likely to be disturbed by electromagnetic pulses and to fail. In order to increase their immunity ability of electromagnetic pulses, the electromagnetic protection method based on the sorting technique was proposed. Through signal transform in signal level using the sequence difference histogram sorting algorithm, signal is separated from electromagnetic pulse. So these equipment were protected finally. Experimental results and simulation demonstrate that the method is effective.
Test and Research on the Machine Twining for Plastic Film Round Straw Bundle Cylinder
Authors: Du Ren , Qi Xiao Qiao , Wang Xiao Chen
Published: October 2013

This paper discusses the principle of ensilage in twining type of straw bundle cylinder, and necessity of developing the machine twining for plastic film round straw bundle cylinder. With combining with domestic actual production requirements, the rational distribution and optimization design are carried out for the machine twining for plastic film round straw bundle cylinder.
Influence of Moisture Content to the Freeze-Thaw Performance of Roadbed in High-Cold Areas
Authors: Wu Qiao Ling , Sheng Yong , Xie Feng
Published: October 2013

Frost-heave and thaw-settlement of roadbed soil in highway will influence directly the durability, safe traffic flow and construction & maintenance costs in high-cold areas, therefore, recognizing and analysing the common embankment technologies of highway roadbed in high-cold areas accurately is significant to the effective controlling of project invest and the highway construction with limited funds in minority areas. The relations of Moisture Content and the freeze-thaw performances of roadbed fillers, subgrade soil were got respectively by experiments, and the results shows: Moisture Content has larger influence on the frost-heave and thaw-settlement performance of the soil. During the embankment of roadbed, the Moisture Content of fillers should be controlled nearby the optimum Moisture Content. The frost-heave and thaw-settlement occurs mainly in the subgrade soil, controlling the Moisture Content of subgrade soil is very important to improve the up-limit of frozen-soil, keep the stability of frozen-soil, control the thaw-settlement of roadbed and get rid of the roadbed diseases.
CLC: U416.1 Document code: B
Frequency Conversion Type Ultrasonic Power Based on DSP Control Technology Research
Authors: Li Chang You , Jia Ming Ming , Wang Wen Hua
Published: October 2013

The introduction of the direct digital frequency synthesis (DDS) technology in the field of communication is against the traditional ultrasonic machining power supply which does not have the multi-frequency tracking shortcomings to build a frequency conversion type ultrasonic power. Frequency conversion type ultrasonic power supply is based on DSP embedded system and adopts direct digital frequency synthesis (DDS) technology combined with a software phase locked frequency of composite frequency tracking scheme to realize automatic search transducer resonance frequency and frequency automatic tracking function which can response the different characteristics of the transducer dynamical; With the use of phase shift control power-principle to realize the output power regulating function when the frequency changes and reduce the switching power loss; It provides an important reference for the design of new frequency conversion type ultrasonic power.
Driving Power Supply of Single-Chamber and Single-Vibrator Piezoelectric Pump
Authors: Sun Ye Ming , Cheng Guang Ming , Zeng Ping
Published: October 2013

Aiming at driving requirements of single-chamber and single-vibrator piezoelectric pump, a driving power supply is designed. Firstly, the power supply utilizes signal generating circuit to obtain a tiny sine signal with adjustable amplitude and frequency. Then it utilizes high-voltage amplifying circuit and power amplifying circuit to gain high voltage and large current to drive the piezoelectric pump. Prototype of driving power supply is manufactured and its output performance is tested. Experimental results show that, in power supply, the driving signal output approaches sine signal in waveform, and controlling varies of piezoelectric pump (driving voltage and frequency) can be adjusted independently and continuously. Within operating frequency range of piezoelectric pump, the driving voltage is up to 170V. The driving power supply designed meets the driving requirements of the piezoelectric pump, and has advantages of small size, light weight, and low cost.
Effect of Strontium on Structure and Property of ZL102
Authors: Wang Jie , Cai Guo Sheng , Lu Hai Feng , Jiang Yue Hong , Chen Rong Fa , Wu Long
Published: October 2013

Analysis tools of microstructure and mechanical properties were used to study ZL102 that was modified by Sr and without modification. The experiment shows that the morphology of eutectic silicon and α-Al phase of the modified alloy have greater changes than that without modification. With the added amount of Sr increases, the morphology of the eutectic silicon changes from sheet into flakiness and fibrous, and finally the fine fiber; α-Al phase increased and showed a small short rod distribution. The optimized technology of Sr modification agent is 0.05%Sr addition, the tensile strength of modified alloy is 218.5 MPa, and the elongation is 2.8%.
Research of Evolutionary Multi-Objective Optimization Algorithm Model Based on AIS
Authors: Li Ming Song , Wang Na , Duan Zhuo Hua
Published: October 2013

Problem of multi-objective optimization based on Artificial Immune System (AIS) is an important research area of current evolutionary computing. Starting from the intelligent information processing mechanism of immune theory and the immune system itself, by researching the calculating model of immune evolution and Based on the biological mechanism of immune system, a general algorithm frame for solving optimization problem is proposed. The researching content has good theoretical value and practicability, also provides base for further research of specific type of problems.
3D Visualization for Detailed Sedimentary-Facies Modeling of Lishui Depression, East China Sea Basin
Authors: Liu Jin Shui , Li Xue , Zhang Jin Laing , Li Cun Lei
Published: October 2013

Geological body is the product of the geological evolution in the time dimension and is also the record and the process of structural changes and sequence changes presenting in 3D configuration, so 3D visualization for sedimentary-facies modeling can results in a large quantity of spatial data which can be used for detailed sedimentary-facies modeling. Lishui Depression is taken for an example and the lower of Mingyuefeng Formation is the target formation for this study. Based on the analysis of sequence cycles and sedimentary environment and interpretation of 3D geological objects, the detailed 3D sedimentary-facies model for the lower Mingyuefeng Formation is built with Sequential Indicator Simulation. Then the 3D visualization of local sedimentary-facies is detailedly presented through fence models and profile models. The results prove that the methodology is competent for 3D modeling and self-adaptive visualization of large geological objects and it is a good way to solve the problem of integration and share of geological spatial data.
The Impact of Grinding on Surface Integrity of Powder-Metallurgy High-Speed Steel (S390)
Authors: Mu Shan He , Cao Chuan Liang , Zhang Xiang Lin , Xiang Zha , Mao Xiu
Published: October 2013

The paper presents an experimental study on the relationship betweenprocess parametersand surface integrity of powder-metallurgy high-speed steel S390 in ultraprecision grinding. The optimal machining parametershave been obtained based on the Taguchi quality design method.The affected layerinduced by ultraprecision grinding has a uniform white layerand an inconspicuous dark layer; there are some carbides in the white layer of some samples; a compressive residual stress field exists on the ground surface. In addition, experiments confirm that lapping can remove the white layer effectively and increase the compressive residual stresses with a growth rate of 65%.The derived results satisfy the real requirements in practice.
Research on 3D Route Planning for UAV in Low-Altitude Penetration Based on Improved Ant Colony Algorithm
Authors: Deng Tao , Xiong Zi Ming , Liu Yong Jun , Meng Qing Zhi
Published: October 2013

It has discussed the approach to establish the models of terrain, threat and the evaluation of route cost in the route planning for UAV in low-altitude penetration. An Ant Algorithm is introduced into UAV route planning, since stagnation may appear during searching in use of traditional ant colonies algorithm,this paper introduces yaw angle to improve heuristic information, establishes the prior search set, makes ant colony algorithm the more rapid and effective search to the best route, simulation results prove the efficiency of the planning method.
Rapid Design Platform of Gear Box Based on Modern Design Methods of Pro/E
Authors: Ju Quan Yong , Li Xiao Hui , Mao Jun
Published: October 2013

It is studied that Modern Design Methods based on Pro/Engineer software. The building process of rapid design platform of gear box is given systematically by applying top-down design techniques of data sharing mode, parametric modeling tools of standard parts, interchangeable parts library and kinematic simulation analysis methods. The solid modeling and simulation analysis of gear box is completed. The rapid design platform can provide technical support for manufacturing companies to adapt to quick changes of market and to research and develop series products efficiently.
A Rapid Planning Method for the Freeform Surface Spraying Based on CAD Model
Authors: Xu Shuang Man , Li Wei Jing
Published: October 2013

In order to solve the freeform surface spray planning problem in spray industrial, this article proposed a model of the spray gun and description of the spray procedure. Then, the article presents a rapid planning method based on CAD model of the workpiece. With this method, the spray trajectory is constructed by the path points normal vector and S-shaped path using CAD model. In ABB's RobotStudio simulation software, a spray experiment is carried out. The simulation results show that this method can effectively simplify the offline planning process and save processing time.
The H∞ Robust Control of Global Supply Chain System Based on Demand and Time Uncertainty
Authors: Zhang Qi , Ru Yi Hong
Published: October 2013

The H robust control problem of linear uncertain system is studied in this article. With international business has expanded largely in all areas of the world, some problems have also appeared in the global supply chain system. The causes of these problems are mostly from the demand and time uncertainties, so we set up a dynamic cooperation system model to reflect these uncertainties. In a further way, we propose the H robust control strategy and LMI algorithm to reduce the uncertainty influences. And using of SIMILINK tool to make simulation analysis of the system is shown at the end of this paper. Through the setback control of inventory state to restrain the disturbance of uncertain factors, we can achieve an ideal state of global supply chain system in the long run.
The Effect of Composition and Microstructure on Corrosion Behavior in SST of Zn-Al-Mg Galvanized Steel Sheet
Authors: Li Feng , Lv Jia Shun , Yang Hong Gang , Zhou Fang , Zhang Leng , Wang Hong Ke
Published: October 2013

Z11A3M, Z6A3M, Z1.6A1.6M, Z1A1M and Z1M coating samples were prepared in HDPS by traditional continuous hot dipping method. The microstructure, element distribution and phase was analyzed by SEM, EPMA and XRD. The corrosion resistance was checked in SST. The result was, MgZn2 and eutectic could be found in all ZAM coating. The ZAM coatings showed excellent corrosion resistance in SST than GI. The corrosion resistance was 4.1 to 11 times of GI. There was no strong relativity between alloy composition and corrosion resistance due to Mg enrichment on the surface of coating. Edge-unsealed ZAM samples showed good corrosion resistance than edge-sealed sample.
Characteristics of Metal/Composites Bi-Material Tube Beam under Axial Impact Loading
Authors: Hee Chul Kim , Dong Kil Shin , Kum Cheol Shin , Ju Won Jung , Lee Jung Ju
Published: October 2013

The aluminum (Al) tube beam was reinforced by CFRP, and the low speed impact test was performed with five different lay-up sequences and two different laminate thicknesses. Stable symmetric crushing mode accompanying one or two layers of lobes with plastic hinge were observed in all specimens. Each direction of carbon fibers, parallel, perpendicular, and oblique to the loading direction, offers respective crashworthiness characteristics in the bi-material tube beam, and the characteristics from each direction were mixed when stacked together. The specific energy absorbed (SEA) and crush force efficiency (CFE) were improved simultaneously up to 38% and 30%, respectively in the Al / CFRP bi-material rectangular tube beam with a [0o/90o]2n lay-up sequence compared to the pure Al tube beam.
Synthesis of Tetragonal BaTiO3 Powders via Alkoxide Method Assisted by Diethanolamine
Authors: Li Yu Tao , Qiu Ke Hui , Qiu Yu Chong , Zhong Hui , Fu Ning Jia
Published: October 2013

The BaTiO3 precursor was prepared by alkoxide method, in which barium hydroxide octahydrate and butyl titanate were chosen as the Ba and Ti sources, and diethanolamine (DEA) as the polymerizing agent respectively. In order to determine the synthesis parameters of the target product, the phase transition process of the precursor with temperature increasing was investigated by TG-DTA. The effect of calcination temperature, the dosage of DEA and calcination time on the phase compositions and crystal structure of the synthesized samples were investigated by XRD. The results indicate that DEA can promote the formation of tetragonal BaTiO3 effectively, and the high-purity tetragonal BaTiO3 was obtained by heat treatment of the precursor at 1100°C for 3h with 1mL DEA dosage.
Research of Cladded Layers Structures Changes Created by Laser Beam Technology Using a Wire Filler Material
Authors: Šimeková Beáta , Kovaříková Ingrid , Hodúlová Erika
Published: October 2013

The paper is focused on study of cladded layer properties created by laser beam, to abrasive wear resistant. As a basic material was used alloyed tool steel X37CrMoV5, the layers wascreated by laser beam by using a filler materials in the form of wire PZ 6159 and PZ 6168. The aim is research ofcladded layers structures changes, theirmicrohardness changes relative to the basic material and determine the abrasive wear resistance. One of the most important advantages of laser cladding technology is bringing the wire to the exact place of the interaction of a laser beam.
Experimental Investigation of Influence of Different Surface Textures on Wear Characteristics of Straight Type Diesel Engine Cylinders
Authors: Liu Cun Shan
Published: October 2013

To investigate antiwear properties of straight type diesel engine cylinders, an SRV IV wear tester was used to measure dynamic friction coefficient and wear depth by simulating working condition of cylinder liner and piston ring. The worn surface topography was observed through scanning electron microscope. The results show that the wear of piston ring is greater than that of cylinder in the same pair of friction. In three groups the average friction coefficient and the wear amount of honing cylinder is the minimum, followed by the smooth cylinder. The wear amount of grooves - micropitting composite textured cylinder is the maximum. The main wear form of three groups cylinders is fatigue, accompanied by two body abrasion.
Hydrodynamics Analysis Based on Improved VBF SPH Model
Authors: Li Da Ming , Wang Zhi Chao , Xu Hao Mei , Luo Hao , Li Yang Yang , Zhao Ming Yu , Pan Fan
Published: October 2013

To improve the application of Smoothed Particle Hydrodynamics (SPH) method, a new Visual Basic-Fortran (VBF) SPH model with the improvements on efficiency and visualizable interface is presented. The VBF SPH model is based on mixed language programming (MLP) method that not only improved SPH model’s efficiency, but also created the interface functions to control and observe the whole simulation. İts general structrue is to compiling the Fortran computing subroutines into Dynamic Link Library (DLL) files and these files will be called by Visual Basic (VB) programs during the calculation. Besides that an improved link-list algorithm, is described detailedly. This algorithm improves the model’s searching efficiency by reducing the number of searching cells. Two classical problems, Flood flow over Dam and Droplet-Impact, are chosen to analyze the VBF SPH model efficiency and distinguish the improvements’ effect. Both of problems are simulated respectively by VBF SPH model and VB model. According to first simulation VBF SPH model is more than 8 times faster than the VB model. And the second simulation refers that the MLP method increased about 7 times efficiency while the improved link-list algorithm increased more than 1 time.
Application of Mathematical Morphology Filter in Non-Stationary Signal of the Spindle Dynamic Balance Regulator Online Adjustment Process
Authors: Hu Zheng Bang , Zhang Dong Sheng , Xu Mu Xun , Tao Tao
Published: October 2013

The signal which is generated by the dynamic balance regulator for unbalanced spindle in the process of adjustment, having strong nonstationarity. The traditional signal processing methods could not deal with these signals, but also could not express the processing of signal changes. Aiming at the problem, a method combining mathematical morphology filter and the short-time Fourier transform is applied in the non-stationary signal processing in this paper. Using mathematical morphology filter could reduce the noise of spindle vibration signal, and improve the SNR. The amplitude of spindle vibration signal could be got by means of short-time Fourier transform method. Utilized the method proposed in this paper, non-stationary signal of the spindle dynamic balance regulator online adjustment process has been analysed, the results of the experiment show the feasibility of the method.
Torsional Vibration Dynamics Modeling and Simulation Research on Harvester
Authors: Wei Zhan Guo
Published: October 2013

building picking mechanical torsional vibration dynamics model, carries on the equivalent moment of inertia, equivalent torsional stiffness calculation, torsional system intrinsic characteristics are analyzed, and the programming, the Harvester power transmission system of each order natural frequency and engine low harmonic times incentive relations, so as to make the vehicle torsion effect effectively restrain.
Research in the Application of Data Mining Technique in Power System
Authors: Yao You Ping
Published: October 2013

In the dozen years after our country enters the new century, the industrial development has made considerable progress. Under such pace of advancement, it is the development and utilization of energy that plays a key role. Among these great progresses, the development momentum of the coal industry has been far beyond peoples previous expectation. The development and utilization of coal resources has not only been widely used in China, but also been an important research subject in some advanced countries in the world. The level of current coal data mining has seriously hampered the development of coal mining enterprises. As a kind of new revolutionary technology, data mining technique is mainly based on the power management system. Such technique can handle all the tasks and fully play the advantage of digital characterization. In this paper, we will make a related study of the hot topic on coal mining power management system based on the data mining technique.
Risk Evaluation of Gas Pipeline Based on Rough Set
Authors: Gu Hong Yan
Published: October 2013

Gas is a flammable, explosive and high-pressure medium. Gas pipelines are passing through many different geographical conditions of changing natural environment with gas. Therefore, a lot of adverse consequences will be bought by the gas pipeline failure, however not all consequences have a great impact on assessment of the losses. The rough set theory is used to simplify the accident loss. In this paper, the accident loss of gas pipelines of the gas enterprise in one city taken as an example is evaluated and forecasted with the rough set theory, which can bring the scientific foundation for the managers management and decision.
Study on the Application of Computer Three-Dimensional Model's Simulation Functions
Authors: Gu Qin
Published: October 2013

In this paper, the simulation functions of computer three-dimensional model as well as the advantages in the simulated application are briefly introduced, and also the application of the three-dimensional models simulation functions to the different industries is discussed in details.