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Online since: July 2011
Authors: Xing Lin Guo, Hai Yang Gao, Ming Yong Wu
Study on Identification of Structural Boundary Using Frequency Parameterization Haiyang Gaoa, Xinglin Guob and Mingyong Wuc State Key Laboratory of Structural Analysis for Industry Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian, China aeric415@126.com, b xlguo@dlut.edu.cn, c wudayuyong@163.com Keywords: Inverse problem, Structural boundary, Frequency parameterization, Impulse response Abstract.
Introduction The finite element method is widely used in dealing with complex engineering problems.
Therefore, model updating has been attracting the attention of engineering community for a long time.
Boundary conditions have great effect on the dynamic behaviors of engineering structures and should be considered carefully in theoretical studies and structural analysis.
One can see that purely mathematical calculation cannot ideally deal with some uncertain boundary when the material parameters of foam cushion is unknown.
Online since: January 2013
Authors: Yan Li, Zhi Nan Zhou, Long Xie, Xiao Yan Xu
Synthesis of two novolac type epoxy resin curing agents and their application Yan Li1, Zhinan Zhou1, Xiaoyan Xu1, Long Xie2 1School of Materials Science and Engineering, Tongji University, Shanghai 201804, China 2BaoShan Iron & Steel Co., Ltd Research Institute (R & D Center), Shanghai 201900, China * Corresponding author address: School of Materials Science and Engineering, Tongji University, 4800 Cao’an Road, Jiading District, Shanghai, 201804, China 1E-mail: yanl@tongji.edu.cn (Yan.
Li) Key words: epoxy resin; novolac resin; coating; curing kinetic; sulfide resistance Abstract: Two novolac resins were synthesized by the reaction between bisphenol A and benzaldehyde (bis-BENR) or bisphenol A and p-hydroxybenzaldehyde (bis-PHNR).
Synthesis and molecular structure of (a) bis-BENR and (b) bis-PHNR Experimental 2.1 Materials Diglycidyl ether of bisphenol A (DGEBA, epoxy equivalent weight=2400~3300g/eq, softening point=130~145°C) was purchased from Dow Epoxy with commercial code of DER 669.
Materials and equipments, 2003(104): 28-29, In Chinese [6] Mika, T.
Online since: September 2013
Authors: C.N. Muralinath
Hence it plays an essential part in both engineering materials and decorative materials.
· EAF is more flexible in the choice of raw materials.
[3] Miroslaw Karbowniezek et al, ‘Foaming of EAF Stainless Steel Slags with Cr2O3 using Steelcal’Metallurgy and Foundry Engineering vol 34 2008
[4] J.Reichel et al, ‘EAF – Foaming Slag in Stainless Steel Production New Extremely Efficient Technology Easy to Handle and Cost Efficient’ Archives of Metallurgy and Materials vol 53 2008
[8] ‘Production of stainless steel parts 1,2 and 3’, Key to Metals Database, December 2007
Online since: January 2009
Authors: Gao Feng Zheng, Ling Yun Wang, Hong Lian Wang, Dao Heng Sun, Wen Wang Li, Li Wei Lin
Deposition Characteristics of Direct-Write Suspended Micro/Nano-Structures Gaofeng Zheng1, a , Lingyun Wang 1, b , Honglian Wang1, c , Daoheng Sun1, d*, Wenwang Li1,2,e ,Liwei Lin1,3,f* 1 Department of Mechanical and Electrical Engineering, Xiamen University, Xiamen, Fujian, CHINA 2 Department of Mechanical Engineering, Xiamen University of Technology, Xiamen, Fujian, CHINA 3 Department of Mechanical Engineering, BSAC, University of California at Berkeley, USA a zhgffj@yahoo.com.cn, b rabitwangly@yahoo.com.cn, c lianzi442@yahoo.com.cn, d sundh@xmu.edu.cn, e xmlww@xmut.edu.cn, f lwlin@me.berkeley.edu Keywords: Direct-write, Near-field electrospinning, Micro/Nano-structures, Deposition Abstract.
Introduction DW technology based on NFES [1] is a versatile top-down fabrication technique, which can fabricate solid nanofiber with diameter from 50nm to 800nm or thin film with line width from 1µm to 20µm [2] from viscous solution, such as organic or bio-material.
At present, realizing the position and morphology controllable deposition of suspended structures is the key for industrial application.
Nanotechnology and Precision Engineering Vol. 6 (2008), p. 20 [3] Chow DC, Johannes MS, Lee WK, Clark RL, Zauscher S and Chilkoti A.
Vol. 29 (2006), p. 291 [8] Dao heng Sun, Liwei Lin, Dezhi Wu and Yinhong Dai. 2nd IEEE International Conference on Nano/Micro Engineered and Molecular Systems. (2007), p.72 [9] Darrell H.Reneker, Alexander L.
Online since: June 2017
Authors: Cai Yun Shang, Yan Wang
AlCrFeNi High-Entropy Coating Fabricated by Mechanical Alloying and Hot Pressing Sintering Caiyun Shanga and Yan Wangb School of Materials Science and Engineering, University of Jinan, No. 336, West Road of Nan Xinzhuang, Jinan, 250022, China.
All these properties show promising prospect for engineering applications.
However, the cost may be increased significantly if some expensive elements were involved in the synthesis of HEAs bulk materials.
Therefore, fabrication of high entropy coating alloys (HEACs) on commonly used substrate materials, such as Q235 steel, provides an economical and promising method in reducing the cost and enhancing the material surface properties.
Acknowledgements The authors acknowledge financial support from the Natural Science Foundation of China (No. 51671095), and Key Research Development Program of Shandong Province of China (No. 2015GGx102016) References [1] J.W.
Online since: August 2013
Authors: Ji Lin Cheng, Yi Gong, Jing Sen Liu
Study on Optimal Scheduling Methods of Urban Drainage Pumping Stations Based on Orthogonal Test Jingsen Liu a, Jilin Chengb, Yi Gong c College of Hydraulic Science and Engineering, Yangzhou University No.131 Jiangyang Middle Road,Yangzhou City, Jiangsu Province, China, 225009 aliujs@shsl.org.cn, bjlcheng@yzu.edu.cn, cgongyi_8@163.com Keywords: Orthogonal Test;Pumping Station;Storm Drainage;Optimization Method Abstract.
Two rivers in this region were connected to outside rivers, and the key project of pump and sluice were equipped at the connection point.
River length (m) Riverbed material Bottom width (m) Bottom elevation (m) Side slope coefficient Ordinary water level (m) Highest controlled water level (m) Ground elevation (m) 1 4587 Soil 13.6 0 0.7 2.8 4.4 4.8 2 4820 Soil 22.2 0 1.1 2.8 4.4 4.7 3 2100 Soil 12 0 0.3 2.8 4.4 4.7 4 4630 Soil 20 -0.3 1.1 2.8 4.4 4.7 5 1630 Soil 20 -0.3 1.1 2.8 4.4 5.1 There were 21 rainfall pumping stations built along rivers in this region.
Contributions concerning the power optimization of the pumping stations. 2008 Proceedings of the ASME Fluids Engineering Division Summer Conference[C].USA: American Society of Mechanical Engineers, 2009, v 1, n PART B, p 1097-1105
Journal of Hydraulic Engineering, 1997(3):49~57
Online since: January 2022
Authors: Sofiane Amziane, Khaled Seifeddine, Evelyne Toussaint
Road Materials and Pavement Design, 21(3), 666–682
Field and laboratory measurement of albedo and heat transfer for pavement materials.
Construction and Building Materials, 202, 46–57
Construction and Building Materials, 183, 502–512
Journal of Irrigation and Drainage Engineering, 140(1), 4013003
Online since: November 2011
Authors: Xin Wei Zheng, Zheng Li, Hao Wang, Xiu Hui Chen, Xue You Wen, Yu Sun
Stress Problems at the Steam Drum Fatigue Checking Point of a Supercharged Boiler Zheng Xinwei1,a, Li Zheng2, Chen Xiuhui3, Sun Yu3, Wang Hao3 and WenXueyou1 1 College of Power and Energy Engineering, Harbin Engineering University, Harbin 150001, China 2 Heating Ventilating Constituent Corporation, Beijing Capital Airport Power and Energy Co., Ltd., Beijing 100621, China 3 Offshore Oil Engineering Share-holding Co., Ltd., Tianjin 300452, China azhengxinwei17@126.com Keywords: supercharged boiler; steam drum fatigue checking point; internal pressure stress; radial temperature difference heat stress; heat stress caused by the temerature difference between the top and lowest points on the outside surface of a steam drum; resultant stress Abstract.
Acknowledgment This paper is funded by the International Exchange Program of Harbin Engineering University for Innovation-oriented Talents Cultivation.
Zinin, “Application of Main Marine High-duty Boilers in Stationary Power Engineering”,Teploenergetika, no. 11, 1996, pp. 56-60
Zinin,“Using Main Highly Supercharged Shipboard Boilers in Land-based Power Installations”, Thermal Engineering, vol. 43, no. 11, 1996, pp. 936-40
[12] Chinese Power Engineering Society, Technical Manuals for Thermal Power Equipment, Vol. 1.
Online since: November 2013
Authors: Hai Yan Wang, Yue Xi Zhou, Hua Zhao, Quan Yuan
Journal of Environmental Engineering.2008,134(6):469-578
Journal of Hazardous Materials, 2004, 106( B) : 83~ 92
Engineering Test on “Zero Discharge” of Residual Sludge [J].
Advanced Materials Research.2011(255-260) : 2934-2939 [34] Low E W, Chase H A.
Chinese Journal of Environmental Engineering, 2012(6):2049-2054.
Online since: June 2014
Authors: Chuan Bao Huang, Li Li Qian, Shu Zhong Wang, Xing Ying Tang, Yang Guo, Dong Hai Xu
Removal of organic matters in pesticide wastewater by supercritical water oxidation Donghai Xu 1, a *, Shuzhong Wang 1, b, Chuanbao Huang, Xingying Tang, Yang Guo, Lili, Qian 1 Key Laboratory of Thermo-Fluid Science & Engineering, Ministry of Education, Xi’an Jiaotong University, Xi’an, Shaanxi Province 710049, China a haidongxu93346423@aliyun.com, b szwang@aliyun.com Keywords: Supercritical water, Oxidation, Pesticide wastewater, Removal efficiency.
Because when energy is self-sufficient, the mass concentration of the organic matters is at least in the range of 3%–4%.[33,34] However, previous studies mentioned that organic compounds at high concentration were easy to produce tarry materials such as char in supercritical water, resulting in the reduction of conversion efficiency[35,36].
However, tarry materials such as char and tar, are not detected in our tests, and this may be due to unique properties of feedstock.
Stenmark: Chematur Engineering AB, Sweden(2002) [35] Y.
Ma: 5th International Conference on Bioinformatics and Biomedical Engineering.
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