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Online since: January 2012
Authors: Hong Bo Wang, Ying Xue Yao, H.W. Geng, H.D. Geng
Quested: Measurement Science and Technology, Vol. l6 (2005), p.354-362
Smith: Journal of Anhui University of Technology: Vol. 18 (2001), p.277-282
Zhou: Applied Mechanics and Materials: Vol. 16-19(2009), p.1030-1032
Dong: Journal of Beijing Institute of Machinery: Vol. 20 (2005), p.28-30
Online since: May 2012
Authors: Yu Hua Lu, Qiu Yuan Liu, Yan Qiu, Chun An You
Parameter Design of Anti-Slide Pile Control Method in Floor Heave Yan Qiu1,a , Yu’hua Lu1,b , Chun’an You1,c , Qiu’yuan Liu1,d 1College of Civil Engineering, Shandong University of Science and Technology, Qingdao 262510 China, aqiuyansdust@163.com, b Sdkdlyh@yahoo.com.cn, c,youchunan@163.com, dliuqiuyuan104@163.com Keywords:floor heave of roadway; limit equilibrium; anti-slide pile; Slip Line Fields; geometry size analysis Abstract:Floor heave is a kind of deformation form that rock and soil mass of roadway floor enter a plastic flow state under surrounding stress.
Analysis about the stress field in opening floor heave The rock around roadway is Coulomb material(c-φ), and φ≠0.
Assume that the rock is a kind of rigid-perfectly plastic material obeying Coulomb yield condition, Prandtl slip line field in floor is shown in Figure 1 after the rock mass under roadway floor entering yield condition.
[2] You Chun’an, Song zhenqi, Theory And Application of Floor Heave Control in Roadways with Anti-Slide Piles, Chinese Journal of Rock Mechanics and Engineering, 6(2002)
[6] Shen Zhujiang, Resistance against sliding of Pile and Anti-slide Pile Design, China Journal of Geotechnical Engineering, 1(1992)
Online since: October 2007
Authors: Yun Fu, Qi Zhang, Feng Sun, Hao Yu Bai
Effect of isothermal aging on the growth and morphology of the intermetallic compounds formed at the Solder/Cu interface of the lead - free solder joint FU Yun, ZHANG Qi*, SUN Feng, BAI Haoyu, School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, People's Republic of China *E-mail: qz@buaa.edu.cn Keywords: lead-free solder, intermetallic compound, isothermal aging.
Main References [1] Sanka Ganesan, Ji Wu, and Michael Pecht , Long-term Reliability Assessment of Lead-free Soldered Electronics, CALCE Electronic Products & Systems Center [2] Tao-Chih Chang, Moo-Chin Wang, Min-Hsiung Hon, Growth and morphology of the intermetallic compounds formed at the Sn-9Zn-2.5Ag/Cu interface, Journal of Alloys and Compounds 402 (2005) 141-148 [3] Y.
McCluskey, Effect of PWB Plating on the Microstructure and reliability of SnAgCu Solder Joints, CALCE Electronic Products and Systems Center University of Maryland [5] Tao-Chih Changa, Moo-Chin Wang, Min-Hsiung Hona, Growth and morphology of the intermetallic compounds formed at the Sn-9Zn-2.5Ag/Cu interface, Journal of Alloys and Compounds 402 (2005) 141-148 [6] Wei Huang, James M.Loman, Bulent Sener, Study of the effect of reflow time and temperature on Cu-Sn intermetallic compound layer reliability, Microelectronics Reliability 42 (2002) 1229 - 1234
Online since: February 2013
Authors: Pei Hsun Tsai, Chih Chun Lou
The fitness of 50 sets of geo-material parameters is evaluated in each generation.
There are three geo-material parameters of thin layer stiffness matrix method in a soil layer, such as layer thickness, shear wave velocity and Poisson's ratio.
Acknowledgements This study was supported by the research funding from the National Science Council of Taiwan (NSC 96-2622-E-324-012-CC3).
[2] Ryden, N., Park, C.B., Ulriksen, P. and Miller, R.D. (2004): Multimodal approach to seismic pavement testing, Journal of Geotechnical and Geoenvironmental Engineering, 130(6), 636-645
[5] Chai, H.Y., Phoon, K.K., Wei, C.F. and Lu, Y.F. (2011): Analysis of effects of active sources on observed phase velocity based on the thin layer method, Journal of Applied Geophysics, 73, 49-58.
Online since: January 2012
Authors: Xiao Zhong Du, Xiao Ping Zhang, Rui Ren
FEM Simulation of the Slab Edge Rolling in Unsteady Rolling Stage Rui Ren1, a, Xiaoping Zhang1, b and Xiaozhong Du1, c 1Taiyuan University of Science and Technology, Taiyuan, China arenrui20090177@sina.com, bzxp_0007@tyust.edu.cn, cxiaozhong.du@163.com Keywords: Hot slab rolling, Unsteady rolling stage, Edge rolling, FEM simulation Abstract.
Bite stage and back-end whip stage of strip in hot rolling, especially unsteady material flow of the head and tail in rougher in edge rolling, will result in fishtail and width shrinkage and decrease incoming ratio.
The edge roll adopts analytical rigid model, while the slab material model adopt elastic-plastic of classical plastic theory.
Piber: submitted Stahl and Eisen(1980) [2] SW Xiong, Xianglin Zhu, Xianghua Liu: submitted to Journal of Plasticity Engineer(1996) [3] ChuanguoZhang, Jingtao Han, JiingLiu: submitted to Journal of plasticity engineering(2006) [4] Xuetong Li, Fengshan Du: submitted to Iron and Steel Vol. 40(2005) [5] Ginzburg V B, Guodong Wang: Steel Rolling Technology Theory and Practice, Beijing, 2002
Online since: November 2010
Authors: Bo Qin Gu, Jin Shan Dong
But these models concern much about micro characteristics of material and are not convenient for engineering application [2].
The flow velocity of the supercritical fluid CO2, the properties and granule size of material are invariant. 1: CO2 bulb 2: Clarifier 3: Storage 4: High pressure frequency control pump 5: Flowmeter 6: Water bath heater 7: SFE kettle 8: Governing valve 9: Separation kettle Fig. 2 Flow chart of supercritical CO2 extraction test Considering the test specification of the test device, the levels of the factors A, B and C are listed in Table 1.
Komers: Chemical Engineering Science, Vol. 49 (1994) No. 15, pp. 2499-2505
Reverchon: The Journal of Supercritical Fluids, Vol. 10 (1997) No. 1, pp. 1-37
Farzad: The Journal of Supercritical Fluids, Vol. 38 (2006) No. 1, pp. 37-43
Online since: February 2019
Authors: S.Ya. Zhuravlev, V.I. Matyukhin, A.V. Khandoshka
Raw materials in the form of alternating loading of mineral raw materials and cupola coke are charged into the unit workspace in layers with the height of 5 m.
Charge materials in the melting zone remain for a significant period of time of 25-40 minutes [16-18].
Interrelation of Flow Heat Capacities The major type of heat transfer from the heated gas to materials in the cupola is thermal convection, complicated with heat conduction phenomena when heating thermally solid charge materials [19-21].
[5] R.E., Aristizabal, P.A., Perez, S., Katz., Perez, M.E., Bauer, Studies of a quenched cupola, International journal of metalcasting.
[9] Loy, David, Taking control of the cupola, Materials World.
Online since: August 2013
Authors: Li Hui Zheng, Zhi Heng Zhang, Ben Guang Guo, Shang Zhi Meng
These cases reflected excellent properties of the fuzzy ball drilling fluids including effectively sealing, good carrying and suspension ability, formation damage control and compatible weighted by inert materials.
The air core is surrounded by transformable fuzz in different lengths, so we vividly call this material as fuzzy ball (FB) [6].
About 40t cotton shells and lost circulation materials were used.
In addition, further thanks to National Science and Technology Major Project of the Ministry of Science and Technology of China-Large Oil and Gas Field and Demonstration Project for the Development of CBM at the eastern margin of Ordos Basin-(2011ZX05062-002).
Oil Journal, 25 (6): 92-95. (2004)
Online since: December 2012
Authors: Jin Chen, Ai Min Yang, Jiang Hao Lin, Yong Mei Zhou
Sentiment classification was conducted in the Corpus DBBJ, DBGZ being the training language material.
But in massive language material classification, methods based on HRSL and imHRSL are simpler and more convenient.
Acknowledgements This work was financially supported by the National Social Science Foundation(12BYY045), MOE (Ministry of Education in China) Project of Humanities and Social Sciences (10YJCZH247), Ministry of Education, Humanities and social science research projects(09YJCZH019), Science and Technology Planning Project of Guangdong Province(2010B031000014), Natural Science Foundation of Guangdong Province(9151042001000010), Postgraduate Research & Innovation Project of GDUFS(12GWCXXM-12).
[3] Weiping Liu etc.Research on building Chinese basic semantic lexicon[J].Journal of Computer Applications,2009,29(11):2882-2884.
Computer Engineering & Science,2012,34(9):160-165.
Online since: March 2021
Authors: Volker Schulze, Frederik Zanger, Daniel Beckers, Gregor Graf, Manuela Neuenfeldt, Tobias Müller, Jörg Fischer-Bühner, Sven Donisi
The requirements regarding the materials in use are steadily increasing in the AM market.
The main process advantages can be related to the freedom of design due to the layer wise manufacturing and the unique material properties based on the local energy input into the metal powder materials.
However, there is a growing demand for materials with higher hardness and better wear properties for LPBF processes.
Figure 1: Iterative process chain for the qualification of new materials for additive manufacturing Material.
In: Journal of Manufacturing Science and Engineering 136, pp. 061026-1 - 061026-6, 2014 [2] Liu, Z.H.; Zhang, D.Q.; Chua, C.K.; Leong, K.F.: Crystal structure analysis of M2 high speed steel parts produced by selective laser melting.