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Online since: August 2014
Authors: Eva Mračková, Ivan Chromek
Ivan Chromek, PhD.2, b 1,2 Technical University in Zvolen, Faculty of Wood Sciences and Technology, Department of Fire Protection, Masaryka 24, 960 53 Zvolen, Slovak Republic a eva.mrackova@tuzvo.sk, b ivan.chromek@tuzvo.sk Keywords: equipment, crude oil, transportation, ecology, environmental safety Abstract.
During a liquidation of oil accidents it is necessary to take operatively immediate and progressive or organizational measures in the following order: 1. to avoid another uncontrollable spill of oil substances (for example through closing of valves, sealing of crackles, draining of oil substances from damaged tanks, etc.; 2. to implement measures against another spread of oil substances to a municipal surroundings or environment through prevention of their undesirable penetration into a sewerage system, shafts, wells, surface flows, etc., 3. to use special equipment in order to limit the spill of oil substances out of technological equipment through laying baffle walls on water surface and subsequent pumping into vessels, tanks or reservoirs; 4. to prevent spreading of oil substances through building up the soil walls, closing the ditches with sandbags, sealing of sewerage system, etc. ; 5. to use materials binding oil substances (absorbing oil substance, such as peat, wood
dust, dry sand, clay or special sorptive materials); 6. transport of caught substances for recyclation or environmentally friendly liquidation of oil substances from polluted soil.
The trainings check the cooperation with the following personnel: - Fire and Rescue Brigade of the Ministry of Interior of the Slovak Republic; - Employees of water management plants; - Other rescue and fire brigades established by the plants working with crude oil as primary raw material.
Journal of Information, Control and Management Systems, 2005, Vol.. 3, No. 2, p. 91-96. 
Online since: July 2015
Authors: Ji Qiu, Xiang Bo Suo, Shi Ning Ma, Gang Shuai, Hong Mei Wang
A Effects of Nano-particles Additives on Wear Performance of Micro-arc Oxidation Coating Prepared on 2A12 Aluminum Alloy QIU Ji1,a, SUO Xiangbo2, MA Shining1, SHUAI Gang1 and WANG Hongmei1 1Department of Equipment Maintenance and Remanufacturing, Academy of Armored Forces Engineering, Beijing, 100072,China 2College of Materials Science and Technology,Tsinghua University ,Beijing,100084,China aqiuji2003@sina.com Keywords: aluminum alloy, micro-arc oxidation, nano particles, friction.
Although aluminium alloy has many advantages, it has many disadvantages, such as low hardness, poor wear resistance, material strength of small, low melting point, difficulty in field welding repair.
Materials protection, 36 (1),20-21,2003
Journal of The Academy of Armored Forces Engineering, 22 (1),80-82,2008.
Online since: August 2013
Authors: Jun Qi Li, Yong Zou, Yong Zhen Jia, Chao Yi Chen
Study on Dissolution Behavior of High Titanium Bauxite Junqi Li1,a , Yong Zou 1,b, Chaoyi Chen 1,c, Yongzhen Jia 1,d 1College of Materials and Metallurgy , Guizhou University, Guiyang 550025,China ajqli@gzu.edu.cn, b467676017@qq.com, cccy197715@126.com, d348056928@qq.com Keywords:High titanium bauxite, Dissolution rate, Alumina, Titanium dioxide Abstract.
Experiment Experimental materials.
The experimental material is the high titanium bauxite, particle size is 43μm above 80% after milling and ball-milling.
Acknowledgements This work was financially supported by the State Natural Science Foundation (51264006).
References [1] C.Y.Yang:LightMetals Metallurgy(Metallurgical Industry Press,China 1991),P.23-35,in Chinese [2] S.W.Bi:Bayer Process of Alumina Production(Metallurgical Industry Press, China 2007),P.41-52,in Chinese [3] Y.J.Tao, Y.H.Yang:Light Metals,(1998)No.7,P.3-9,in Chinese [4] J.Hulston, P.J.Scales:Internation Journal of Mineral Processing, Vol.73(2004)No.4,P.269-279 [5] L.C,M.L:Light Metals,(1991)No.6,P.2-18,in Chinese [6] P.P.Cui,Z.M.Huang,S.L.Zhou: Light Metals,(2008)No.2,P.55-58,in Chinese [7] N Pejcinovic, R Frost:Physicochemical and Engineering Aspects, Vol.292(2007)No.5,P.21-26 [8] S.W.Bi:Bayer Process of Bauxite Dissolution(Metallurgical Industry Press, China 1996), P.150-162,in Chin
Online since: August 2011
Authors: Xin Li Tian, Xiu Jian Tang, Bao Guo Zhang, Keling Lin Lin
During the course of grinding, sharp edges on ceramic materials are prone to damage by chipping or flaking when diamond grinding wheel near the edge.
The sample is made of Al2O3, its material performance is E=300GPa, KIC=4.6MPa·m1/2, μ=0.20.
As a brittle material, the AE signal of engineering ceramics is a kind of sudden signal, and parameter analyzing method is often used to describe the acoustic emission response of edge chipping.
Acknowledgment This work is supported by National Natural Science Foundation of China (Grant No: 51075309).
Journal of the European Ceramic Society, 2009, 29(11): 2135-2141.
Online since: January 2011
Authors: Krishnamorthy Raghukandan, Somasundaram Saravanan
References [1] V.I.Lysak and S.V Kuzmin, Explosive Welding of Metal Layered Composite Materials, Paton, B.E.
,Kiev: Paton Electric Welding Institute, National Academy of Sciences of Ukraine, 2003
[2] S.Saravanan, K.Raghukandan, weldability windows for dissimilar metals cladding using explosives, Theory and practice of Energetic Materials, Vol VIII ,pp580-585
[8] P.Manikandan, K.Hokamoto, M.Fujita, K.Raghukandan, R.Tomoshige Control of energetic conditions by employing interlayer of different thickness for explosive welding of titanium/304 stainless steel journal of materials processing technology 1 9 5 ( 2 0 0 8 ) 232–240
Online since: June 2012
Authors: Wen Sheng Li, Mei Zhao, Li Xin Wang, Xian Ming Shi
Reaching-sign chart's isomorphism Markov chain The state transition equations of this Markov chain are as follows: (1) Modification of General Army-civilian Equipment Expropriation Business Process Under condition of information-based warfare, demands and varieties of equipment materials all have a great growth, therefore it has could not meet the needs of materials only by the army support in the future, especially for the needs of general army-civilian equipment.
So we must redesign and integrate all of the equipment materials.
Military Science Press, Beijing (2008)
Journal of academy of armored force engineering, Vol. 3 (2009), p. 11-14.
Online since: September 2013
Authors: Gang Cheng, Yang Li, Zhong Lei Wang, Xiao Li
Optimization Design Method of the Pre-Manufactured Hole of Flanging Yang Li1,a, Zhonglei Wang2,b, Xiao Li2,c, Gang Cheng2,d 1School of Material Science and Engineering,Shandong Jianzhu University,Jinan 250101,China 2School of Mechanical and Electrical Engineering,Shandong Jianzhu University,Jinan 250101, China ali77yang@163.com, bwade_thunder@163.com,c1203107113@qq.com,dChenggang@163.com Keywords: flanging, mathematical model, finite element simulation, optimization design method Abstract: For the difficulty of calculating the size of the Pre-Manufactured hole of flanging, the formula was derived by using the theory of equal line length and the theory of equal area.
The theory of equal area point out that the material thickness is constant, we can obtain the maximum of the size of the Pre-Manufactured hole.
(7) Generally speaking, in the actual flanging forming process, The thickness of the material and the length of the internal radial line change at the same time.
However, in the flanging process, the material thickness of forming area change more clearly than the length of the internal radial line.
Journal of Nanchang University. 2008.(1):40-43.In Chinese.
Online since: January 2014
Authors: Zhi Liang Zhu, Guo Jun Ma, Chen Fan Yu
Yu: Journal of Iron and Steel Research, Vol. 20(2008), p.14 (in Chinese)
Thomas: Metallurgical and Material Transactions B, Vol.27(1996),p.689
Stefanescu: Metallurgical and Material Transactions A, Vol. 23(1992), p.669
Curreri: Metallurgical and Materials Transactions A, Vol. 29(1998), p.1697
Du: Metallurgical and Materials Transactions B, Vol. 42(2011), p.522.
Online since: May 2016
Authors: Wei Zhang, Chao Yan
Mechanical equipment usually adopts metal materials, so only when calculating the maximum normal stress, it doesn’t need to care about tension or compression.
Power plant location parameter optimization In the case of given arms cross section parameters, the maximum stress of arms not only affects the selected material of arms, also affects the maximum external load withstand by the entire body.
Acknowledgement This work is supported by National Natural Science Foundation of China and Civil Aviation Administration of China jointly funded project (Grant # U1233106).
Dynamics Simulation of Scissors Elevating Platform Powered Hydraulic Cylinder [J], Journal of System Simulation, 2010, 22(11): 2650-2653 [6] LI Emin, QI Wenhu, WANG Bin, YANG Yang, ZHANG Chen.
Strength optimization design of boxshape arms of a scissor lift mechanism with singlehydraulic cylinder[J], Applied Mechanics and Materials, 2012, 141(1):513-518
Online since: September 2013
Authors: Lei He, Chuan Yi Lv, Xian Hai Yang
The geometric parameters of Figure 2 are defined as follows: modulus of elasticity of the material is; flexible hinge length is, cross-section moment of inertia is; rigid bar length is;cross-section moment of inertia is infinite; the rotation angle is; point D deflection is .According to the balance between static and deformation geometry, the Fig. 2 can be further simplified as half of the ladder beam model shown in Fig. 3 according to the theorem translation system of forces.
The moment of flexible segment AB arbitrary cross-section is: (1) According to the mechanics of materials, the beam deflection curve’s approximate differential equation is: (2) In Eq. 2: M, I are the moment of cross-section and the moment of inertia of the flexible segment, E is the elastic modulus.Plug Eq. 1 into Eq. 2, Through the integration, get the angle deformation equation and deflection curve equation respectively: (3) When the corner of flexible beam end section B is, there is no restricting to limit the deformation in the process of building the model.
material selection is65Mn, material elastic modulus is 210GPa, poison’s ratio is 0.3, density is 7.9g/cm3, yield stress is 785MPa.
Acknowledgment This work was supported by Shandong Province Natural Science Foundation (No.
Journal of Mechanical Design , 1994 , 116( 3): 770 -776