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Optimization of a Reinforcing-Rib Design for ABS and High Glossy Surfaces of Plastic Parts SeongWon Jeong Dept. of Product Design and Manufacturing Engineering, Seoul National University of Science and Technology, South Korea swjeong@seoultech.ac.kr Keywords: Rib, Rib Design, Injection Molding, ABS resin, Response Surface Methodology Abstract.
Introduction In recent years, much attention has been given to the importance of product surfaces in the field of plastic parts, as industrial design has become one of the key elements of product success.
Moreover, engineering designers have difficulty directly applying these guidelines to the actual design of plastic parts.
The material used to create the mold is CENA1[7], which is generally used to create a mirror-like finish.
(Hanser Gardner Publications, Inc. 2006) [4] General Design Principles for DuPont Engineering Polymers; Information on http://www2.dupont.com [5] Design Solutions Guide: Information on http://www.plasticsportal.com/usa [6] Information on http://www.sabic-ip.com [7] Information on http://www.hitachimetals.com/product/specialtysteel/toolsteel [8] G.E.P.

High-speed CNC grinding process optimization of non-circular rotary parts based on particle swarm optimization Yu Huang1, a, Wuyi Ming1,b, Jianwen Guo2,c, Mingzhen Li1,d, Jian Li 1,e * 1School of Mechanical Science & Engineering, Huazhong University of Science and Technology, Wuhan, China 2DG-HUST Manufacturing Engineering Institute, Dongguan, China ayuhuang.hust@gmail.com, bmingwuyi81@gmail.com, c guojianwen1986@gmail.com, dmannson.li@gmail.com, ed201177130@hust.edu.cn Keywords: high-speed CNC grinding, camshaft, grinding process optimization, PSO Abstract.
Lee, etc. [10] optimized the material removal rate(MRR) for the silicon carbide grinding with PSO, and found that the performance of PSO was better than that of GA for this case.
Acknowledgements This research is supported by the National Natural Science Foundation of China (NSFC) under Grant No. 51235005 and National Key Technology R&D Program No.2012BAF13B07 and No. 2012BAF13B10.
Mills, Highspeed grinding with CBN grinding wheels applications and future technology, Journal of Materials Processing Technology, 110(1) (2001) 78-88
[11] Erwie Zahara, Chia-Hsin Hu, Solving constrained optimization problems with hybrid particle swarm optimization, Engineering Optimization, 40(2008) 1031-1049 [12] Gopalakrishnak B, Al-Khayyal F, Machine parameter selection for turning with constraints: an analytical approach based on geometric programming, Int J Prod Res,29, (1991) 1897-1908

Computerized Design and FE Simulation of Meshing of Involute Spiral Bevel Gears with Alignment Errors Ben Wang1, a, Lin Hua2, b 1School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China 2School of Automotive Engineering, Hubei Key Laboratory of Advanced Technology of Automotive Parts, Wuhan University of Technology, Wuhan, 430070, China awangben1017@126.com, blhuasvs@yahoo.com.cn Keywords: Spiral Bevel Gear, Alignment Error, Contact Stress, Transmission Error, Shift of Path of Contact.
The material is 20CrMnTi steel with the properties of Young’s modulus MPa and Poisson’s ratio .
Handschuh: Computer Methods in Applied Mechanics and Engineering, Vol. 158 (1998), p. 35

Ecological Floating Bed Applied to Control Nutrients and Cyanobacteria Bloom in the Pond Water under Intensive Aquaculture Ling Tao 1,2,a, Jian-qiang Zhu 1,b,*, Gu Li 2,c,* 1 Engineering Research Center on Ecology of Wetland and Agricultural Use, Ministry of Education, Yangtze University, Jingzhou,434025, China 2 Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China; a taolingcjs@yfi.ac.cn, b zyjb@sina.com, c ligu667@yahoo.com (*Corresponding Author) Keywords: intensive pond aquaculture; nutrient reduction; harmful algal; cyanobacteria bloom Abstract.
Schematic diagram of the ecological floating -bed Materials and Methods Design of Ecological Floating-bed.
Substrate filled in the floating bed could be any other material which is easily to enrich microorganism and form biofilms.
Headley: Ecological Engineering, No.37 (2011), p.474–486
Li, et al: Ecological Engineering ,vol.24, No.37 (2011) ,p.474–486

Research on the System for Coal Mine Disasters Prevention Based on Modularization Heterogeneous Multi-robot Hong WANG 1,2,a, , Ruiqing JIA 1,b , Hongxiu ZHU 1,c 1 School of Mechanical, Electronic and Information Engineering, China University of Mining and Technology (Beijing), Beijing, China 2 School of Mechanical Engineering, Heilongjiang Institute of Science and Technology, Harbin, Heilongjiang, China a Wanghong_cumtb@foxmail.com, bRuiqingjia@yahoo.com, cZhx@cumtb.edu.cn Keywords: Heterogeneous Multi-robot system, Coal mine safety, Disaster prevention, Emergency network Abstract.
MHMRS applied in coal safety engineering should be subject to the following process: 1) Formulated the task.
The key tasks are to fully survey and map the laneway structure including the position of the equipments, and save the information.
Image materials could be transferred to the ground via network for the purpose of judging any field violation, predicting disaster and taking correct measures by computer graphic recognition method or expert on the ground.
Instant rescue must be composed of diversiform robots according to the task demands, such as: personnel searching robots, communication robots, robots for succor material supplying, ambulance transport robots and robots for leading the personnel.

Start-up of ANAMMOX Bio-filter for Domestic Secondary Effluent in Ambient Temperature Di WU1,a, Dong LI1,b, Wei-nan GAO1, Hui-ping ZENG1, and Jie ZHANG2 1Key laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China 2School of Municipal & Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China ahitwudi@126.com, blidong2006@bjut.edu.cn Keywords: ANAMMOX; bio-filter nitrification biofilm; domestic sewage; ambient temperature Abstract.
Materials and methods Reactor system.
Nitrification biofilm Fig.5 Picture of filter material It was concluded from Fig. 4 that ANAMMOX bio-filter had a low growth rate and TN removal rate because a long process of selection and adaptation of micro-organisms in bio-filter.
Acknowledgements This work was supported by the Trans-Century Training Program Foundation for Talents from the Ministry of Education of China (NCET-10-0008), the Open Project of State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (QAK201005), and the National Water Pollution Control and Management Technology Major Projects (2012ZX07202-005).

Yavari, An Overview of Additive Manufacturing Technologies—A Review to Technical Synthesis in Numerical Study of Selective Laser Melting, Materials. 13 (2020) 3895
Fatemi, Analysis of the effect of internal defects on fatigue performance of additive manufactured metals, Materials Science and Engineering A. 785 (2020) 139385
Mizuno, Influence of Shot Peening Treatment on Rotating Bending High-Cycle Fatigue Properties of Additive Manufactured Maraging Steels Material, Journal of the Society of Materials Science of Japan. 67 (2018) 891-897
Raju, An empirical stress-intensity factor equation for the surface crack, Engineering Fracture Mechanics. 15 (1981) 185-192
Nam, Analysis on peculiar fatigue fracture behaviour of shot peened metal using new threshold stress intensity factor range equation, Fatigue & Fracture of Engineering Materials & Structures. 44 (2021) 306–316.

Study on the Temperature Filed of Wet Dual Clutch Transmission during Starting Process Xi Liu, Xiusheng Chenga, Yan Li, Qiang Gu, Yinshu Wang College of Automotive Engineering, Jilin University, Changchun, China axiusheng_cheng@yahoo.com.cn Keywords: Dual clutch transmission, Wet clutch, Matlab, Temperature field, Numerical simulation Abstract.
Jerk is one of the key evaluating indicators of starting quality, which is quantized riding comfort.
Fig. 1 Clutch pressure increment graph in starting process The slipping work is another key evaluating indicator of starting quality.
l The physical parameters don’t change while coupling, for the material of the friction pairs are even.

Application of RFPA 2D in Sublevel Caving Mining Extra-thick Coal Seams Hua NAN 1,a , Tao XU 2,b , Zhidong WEI 3,c 1 School of Energy Science and Technology, Henan Polytechnic University, Jiaozuo 454000 China 2 Research Center for Numerical Tests on Material Failure, Dalian University, Dalian 116622 China 3 School of Energy Science and Technology, Henan Polytechnic University, Jiaozuo 454000 China a nanhua@hpu.edu.cn, bxukyle@163.com, cweizhd@hpu.edu.cn, Key words: numerical simulation test; stress surrounding; parameters' selection; failure of top coal; extra-thick coal seams Abstract: On the basis of suitable arrangement for the special stress surrounding and parameters selection, Realistic Failure Process Analysis 2-D (RFPA 2D ) numerical simulation of extra-thick coal seams' displacement and failure is carried out.
Introduction Sublevel caving mining technology is a new promising mining technology presently, and the key problem of this technology is whether the top coal can be fully fractured or not[1-3].
[4] Mengtao ZHANG.: Journal of Rock Mechanics and Engineering Vol. 6(3) (1987) p.197

Material Heavy oil and geological water used in the experiments are collected from the Chengbei (Bohai, China) oilfield. 1.2.
By lowering the activation energy of catalyst activation key reaction to accelerate reaction rate, the component of heavy oil is deep degradation.
The active ingredients of oil-soluble catalyst can attack small segment of asphaltene molecular skeleton, thereby breaking macromolecules to small molecules generated, upgrading the role of asphaltenes(fig 4). 2.4 Catalytic modification with hydrogen donor Water as a key nucleophilic component can provide an amount of hydrogen ions, and then attack α carbon, to split C-S bond, and open cyclic structure, releasing H2S and CO, through water gas reaction to convert CO2 and H2.
Chemical Reaction Engineering and Technology, 2005, 21: 463-467