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Online since: June 2017
Authors: Ping Wang, Yue Long Bai, Zhi Feng Zhang, Tian Yang Guan
The application of Annular Electromagnetic Stirring (A-EMS) for production of high-quality slurry has been examined. Al-11%Zn-3%Mg-1%Cu-0.13%Zr alloy was used to investigate the effect of A-EMS at various temperatures above liquidus on structure refinement. The results indicate that the grain size was reduced greatly and the homogeneous structure was achieved. Instead of the case in tradition, the nucleation particles gradually formed and the enhanced grain refining efficiency can be mainly attributed to an instantaneous nucleation of numerous heterogeneous nucleation of Al3Zr in the superheating melt under A-EMS.
Online since: February 2011
Authors: Shi Wu Li, Jing Jing Tian, Zhi Fa Yang, Hai Zheng Wang, Lin Hong Wang
To analyze the relationship of brake performances and its influence factors, a kind of tire drum test-bed was designed. The gradation principle of flywheels was proposed based on the double multiplication method and an inertial system with eight steps of flywheels was put forward. The inertia-mass of tire load ranging 400 from 5000 kilograms was divided into 256 levels with the accuracy of ±10 kilograms. The dynamics simulation model was built using SOLIDWORKS and ADAMS. The program of acceleration and brake testing were schemed. The feasibility and accuracy of design methodology of test-bed inertial system were verified by the comparison analysis of simulation and road test. The accurate matching between the moment of inertia of test-bed inertial system and tire load was realized.
Online since: July 2011
Authors: Feng Cao, Hai Feng Chen, He Sun, Jin Tian Yang, Pei Song Tang, Sheng Liang Ni
The LaNiO3 nanoparticles were prepared by a sol-gel process. The LaNiO3 nanoparticles were characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM) and UV-Vis diffuse reflectance spectroscopy (DRS). XRD and SEM demonstrate the successful synthesis of single phase perovskite LaNiO3 and an average grain size of 80 nm in diameter. It was found that the as-prepared LaNiO3 shows strong visible-light absorption with absorption onset of 545 nm, indicating a narrow optical band gap of 2.28 eV. Consequently, LaNiO3 nanoparticles show high visible-light photocatalytic activity for decomposition of methyl orange in comparison with the commercial Degussa P25. The photocatalytic experiment shows the high photocatalytic activity for the decomposition of methyl orange under visible-light irradiation, which is attributed to the strong visible-light absorption.
Online since: October 2012
Authors: Ying Li Wei, Yue Hua Wang, Ya Qiang Tian, Xiao Hong Yang
The corrosion inhibition performance of molybdate and molybdate compound corrosion inhibitor of carbon steel in seawater were tested using weight loss method, electrochemical polarization curve, and the quaternary compound molybdate corrosion inhibitor were made sure through the experiments. The experiment results show that the compound corrosion inhibitors have obvious synergistic corrosion inhibition effects in the proportion of 40 mg/L molybdate, 10mg/L HEDP, 4mg/L Zn2+ and 50 mg/L glucose acid salts.
Online since: February 2011
Edited by: Huai Ying Zhou, Tian Long Gu, Dao Guo Yang, Zheng Yi Jiang, Jian Min Zeng
This work surveys the latest advances in, and applications of, biomaterials, new functional materials, hydrogen and fuel-cell science, engineering and technology, environmental catalysis and environment-friendly materials, new energy materials, polymeric materials, mechanical behavior and fracture, thin films, etc. It not only offers a broad overview of the latest advances, but also provides a valuable summary, and references, for researchers in this field.
Online since: February 2011
Edited by: Dao Guo Yang, Tian Long Gu, Huai Ying Zhou, Jian Min Zeng, Zheng Yi Jiang
This work brings together the latest applications of, and advances in, CAD/CAM/CAE, energy storage and energy development, mining machinery manufacturing, new energy equipment and manufacturing, cloud manufacturing and extreme manufacturing, bio-manufacturing, enterprise informationization, integrated manufacturing systems, quality monitoring and control of manufacturing processes, measurement control technologies and intelligent systems, embedded systems, etc. This broad overview of the latest advances also provides a reference source for researchers in this field.
Online since: November 2012
Authors: Yong Sun, Feng Xu, Yong Jiang Shi, Xiao Yang Ji, Tian Liang Liu
An experimental table of the heating system of phase change heat storage is built with thermal-storage tank packaging phase change material, which transferred heat with internal fluid. The flow rate, inlet temperature, outlet temperature of internal fluid and the temperature of heat storage material are measured. The influences on the properties of heat storage system are analyzed.
Online since: February 2012
Authors: Gui Cong Wang, Xi Jie Tian, Chuan Peng Li, Na Na Yang
This paper proposes an effective genetic algorithm for the job-shop scheduling problem (JSP) to minimize makespan time. An effective chromosome representation based on real coding is used to conveniently represent a solution of the JSP, and different strategies for selection, crossover and mutation are adopted. Simulation experimental results have shown that the scheduling model using the algorithm can allocate jobs efficiently and effectively.
Online since: March 2015
Authors: Hai Tao Huang, Xiao Guang Xu, Dong Yang, Tian Xin Jin
This paper analyses several common transmission pricing methods of marginal cost and embedded cost deeply. It analyses pricing models of several transmission pricing methods, long-run marginal cost (LRMC) method, MW-Mile method, sensitivity method, flow tracing method, contract path method and stamp method. It also gives a comprehensive comparison of characteristics and limitations of these pricing methods, discusses their applicable conditions in aspects of fairness, economic, financial balance, transparency, operability and others, and makes a quantitative research of comparison based on a case, and verifies the results.
Online since: October 2013
Authors: Jiu Hua Xu, Yu Can Fu, Lin Tian, Jia Yan Zhao, Lu Yang
This study describes the theoretical basis of ultra-high-speed grinding. In addition, a new grinding machine tool whose maximum grinding speed can reach 450m/s has been recently developed, particularly, some of main components are basically discussed. Finally, this paper concludes with a presentation of current work and some future desirable plans in the area of ultra-high-speed grinding by means of the developed grinding machine tool.
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