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Online since: November 2013
Authors: Zhi Yong Li, Zong Wei Niu, Xiu Ting Wei, Li Li, Hong Fu Liu
Experiment methods In this research, the experiments material was aluminum alloy 6061.
The work described in this paper is supported by National Natural Science Foundation of China (Project number: 51005140), Natural Science Foundation of Shandong Province (Project number: ZR2010EQ037) and Young Teacher Development Support Fund of Shandong University of Technology.
Metin, Characterization and corrosion behavior of ceramic coating on magnesium by micro-arc oxidation, Journal of Alloys and Compounds, 509(34) (2011), 8601-8606
Online since: October 2011
Authors: Hong Mei Sun, Ming Gao, Song Lin Nie
The Application of Hydraulic System in Wind turbine Sun Hong-mei1, 2, a, Gao Ming3, b and Nie Song-lin1, c 1Beijing University of technology, Beijing 100124, China; 2Beijing Vocational College of Electronic Science and Technology, Beijing 100029, China; 3Beijing JINGCHENG New Energy Co.Ltd.
For example, accumulator bladder is used ECO (epichlorohydrin rubber) material, the hydraulic cylinder piston rod is used 40CrNiMoA, and cylinder body is used Q345E.
M: The Application of Hydraulic System on Windmill Generator, Science &Technology Information, Vol.10(2010), p, 130-131 [2] CHU Jin, GAO Wenyuan: Designing and Modeling of Yawing Brake Hydraulic System for Large-size Wind Turbine, Machine Tool& Hydraulics, Vol. 38, No.16 ( 2010), p, 60-62 [3] LIU Wei, DONG Mu-jie, ZHANG Xiao-yong, WAN Wei: Modeling and Emulating of Hydraulic Variable Propeller Pitch System of Wind-driven Generator’s, Electric power survey&design, Vol.5, (2010), p, 69-72 [4] SUN Hou-huan, XU Hai-han, YANG Mou-cun, YIN Chen-bo: The speed control of hydraulic upturning mechanism for wind power blade mold, Chinese Hydraulics & Pneumatics, Vol.7,(2010), p ,51-53 [5] QU Gui , YANG Yong, WU Xiao-dan: Design and dynamic analysis on hydraulic variable pitched propeller system of mega-watt graded wind power generator, Journal of Machine Design, Vol.7, (2009), p, 54-56 [6] Qu Gui, MEI Hu-Guang, WU Xiao-Dan: Synthetical Hydraulic System Design df Large-scale Wind Power Generator
Online since: September 2013
Authors: Fang Yi Li, Bao Long Gong, Qing Dong Hao
Ultrasonic transducers attached to the interior of the vibration plate use PZT-5H as the fundamental material.
Acknowledgements This work was financially supported by Engine remanufacturing laser pulse energy precision cold-weldingtechnology research and application mechanism (2012ZD010), basic science problem of remanufacturing of machinery and equipment (2011CB013403) and “Taishan Scholar Program Foundation of Shandong”.
[6] Xiangming Deng and Min Cui: Journal Of Wuyi University (Natural Science Edition) Vol. 4(2000), p. 65-68
Online since: April 2014
Authors: Cheng Wei Huang, Cheng Shen, Li Ming Li, Yi Tian
A method of optimum installation of the viscoelastic damper on the steel frame structure Liming Li1, a, Chengwei Huang2,b , Cheng Shen3,c, Yi Tian4,d , 1,2,3,4Faculty of Civil Engineering,Kunming University of Science and Technology, Kunming, Yunnan, 650500, China a451027094@qq.com, b994048762@qq.com, c369245743@qq.com, d1106268047@qq.com Keywords: viscoelastic dampers; Time history analysis; Optimum installation; Abstract.
The material of beam and column is steel(NO.Q235) ,and floor is reinforced concrete of C30.
[2] Mingfeng Huang,Jiaxiang Tang, Optimum Installation of the Viscoelastic Dampers for the Tower Structures[J], Journal of Huazhong University of Science and Technology, 2001,29(11) :73-75 [3] Qin Zhang,Wenjuan Lou,Yong Chen,Objective Functions And Their Implementing Method of Location Optimum of Viscoelastic Dampers[J], Industrial Construction,2003,33(6):10-13
Online since: May 2014
Authors: Zhen Dong He, Rui Min Hu, Jing Chao Xu
The Development of Badminton Auxiliary Training System Based on Kinect Motion Capture Zhen-dong He1, a, Rui-min Hu1,a, Jing-chao Xu1,b 1 Physical Education Department of Hebei University of Science and Technology, Shijiazhuang, Hebei Province, 050018, China ahuruimin1975@163.com, bxujingchao58@163.com Keywords: Auxiliary training, Kinect, Motion capture, Badminton Abstract.
Introduction As people living standard is becoming higher and higher, people no longer meet the basic material needs, more and more people have physical and mental and spiritual needs.
Mullins: Journal of Science and Medicine in Sport, Vol.16 (2013), p.24
Online since: June 2010
Authors: Na Jia, Chang Liu
Self-adsorption fiber board is a new type of functional wood-based panel belonging to the category of functional compound material, which utilizes the composite element functional processing method [9].
Physical and Mechanical Performance of Self-adsorption fiber board Amount of added activated carbon Density [g/cm 3] Bending strength [MPa] Elastic modulus [MPa] Internal bond strength [MPa] 24h water absorption thickness expansion rate [%] No addition 0.76 30.04 2350.72 0.30 13.95 3% powder 0.78 30.61 2265.98 0.38 15.60 5% powder 0.78 31.26 2360.06 0.41 16.10 10% powder 0.79 34.04 2526.26 0.45 18.95 3% grain 0.78 30.43 2312.87 0.42 14.78 5% grain 0.79 32.46 2257.87 0.59 15.15 10% grain 0.81 32.16 2315.88 0.56 9.70 (2)Test on formaldehyde release of self-adsorption fiber board In accordance with the regulation of GB /T18580-2001 Indoor Decorating and Refurbishing Materials-Limit of Formaldehyde Emission of Wood-based Panels and Finishing Products, the drier method is adopted to test the formaldehyde emission of self-adsorption fiber board . 0 0.2 0.4 0.6 0.8 1 Amount of addition % F o r m a l d e h y d e e
Discussion Physical and mechanical performance The composition element of self-adsorption fiber board is added with activated carbon, especially the activated carbon grain, which plays a role in reinforcing composite material, therefore, theoretically, the mechanical performance of the panel will be improved.
Forest Products Journal, 1999, 49(1):49-55 [4] Jack D Thrasher, Kaye H Kilburn.
Jiangsu Environmental Science and Technology (supplement 2): 43-45
Online since: September 2012
Authors: Keng Soon Woon, Shigeyuki Kanno, Kui Liu
Introduction Gundrilling is a specialized material removal process for the construction of deep holes with typical depth to diameter ratios of greater than 10.
Primarily, this type of nickel-chromium-based superalloy is highly prone to work hardening [5] in which machining of the outer layer of material increases the hardness of the subsequent layer through sub-surface plastic deformation.
With the increased in hardness, higher magnitude of cutting force (energy) is required to machine the same amount of materials.
Teo: Journal of Materials Processing Technology Vol. 63 (1997), 199-204
Mannan: Machining Science and Technology Vol. 4-1 (2000), 127-168.
Online since: November 2013
Authors: Jian Guo Zhang, Bao Qun Wang, Yong Duan
., Room 2-2601, A Building, No. 24, Culture East Road, Lixia Region, Ji¢nan, Shandong, China 2School of Civil Engineering, Shandong Jiaotong University, No. 5001, Crabapple Road, University Science Park, Changqing Region, Ji¢nan, Shandong, China awbaoqun@163.com, bjgzhang0508@163.com Keywords: tunnel entrance, forepoling bolt, pre-supporting, finite numerical simulation, complicated geological condition Abstract.
Mechanical parameters of surrounding rock and supports materials are shown in Table 1.
Table 1 Mechanical parameters of the materials Types of materials Elastic modulus (Gpa) Poisson ratio Cohesion (Mpa) Internal friction angle (°) Density (kg.m-3) Surrounding rock 0.30 0.40 0.15 19 1900 Primary supports 28.5 0.23 - - 2500 Reinforced area of systematic bolts 0.33 0.40 0.15 19 1900 Forepoling bolts 210 0.30 - - 7700 Analysis of Internal Force and Safety Factor of Primary Support Five control points in section have been chosen for analysis, and position of control points is shown in Figure 2.
Chinese Journal of Rock Mechanics and Engineering.
Online since: October 2011
Authors: Li Ming Wu, Zi Jian Wang
Figure 1 The building of reservoir slope section plane Figure 2 The Area of slope sliding led to building superstructure foundation settlement after cracking Table 1 Member size and strength of material Member Cross-section /mm Strength of material Upright post 450×450 C25 Beam 250×350 C25 Foundation beam 300×400 C25 Pile 800×800 C25 Wall 240 Mu10 Floor 100 C25 Table 2 The related parameters of soil Soil number Proportionality constant Internal friction Average bulk density Lateral pressure coefficient Negative friction coefficient The friction strength 1 2000 10 16.5 2000×H 0.3 -4.80e3 2 4000 22 18.0 4000×H 0.3 -16.14e3 3 3000 30 20.0 5000×H 0.3 -33.78e3 Figure 3 The structure layout Figure 4 Distribution of soil profile Figure 5 8 single piles settlement Figure 6 Roof beam and column position location number intersected 12 nodes location number Material Character.
Table 5 Comparison of internal force and displacement of load step table Number Result 0 1 2 3 4 5 6 7 8 Model node y maximum displacement (m) 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 Floor node y maximum displacement (m) 0.0043 0.0305 0.0221 0.0272 0.0347 0.0238 0.0174 0.0220 0.0280 Wall node y maximum displacement (m) 0.0020 0.0305 0.0221 0.0272 0.0347 0.0238 0.0174 0.0220 0.0280 Maximum frame bending moment E6 0.0808 1.230 2.230 2.920 1.520 2.180 2.070 2.720 2.810 Maximum value of frame-shear E6 0.1971 3.530 5.410 6.780 4.350 5.100 4.850 6.360 6.590 Axial force maximum frame E7 0.112 15.20 15.20 19.10 3.790 14.20 14.20 18.60 3.720 Lower Figure 7 and Figure 8 from the previous comparison results can be seen, in the same material, size, and the same gravity loads under those conditions, after the settlement of the upper 12 nodes of displacements and stresses are greater than when not settlement.
Design of superstructure Foundation and when considered separately, in order to meet seismic bearing capacity of structure shall increase the strength of materials.
Journal of Chongqing Jiaotong University Natural Science,Vol. 540-543 (2008), p. 27(4).
Online since: August 2014
Authors: Francesco Micelli, Maria Antonietta Aiello, Emilia Vasanelli, Maria Sileo, Giovanni Leucci, Angela Calia
Material and Methods Materials.
Despite the large scatter (R2=0.5), there is a linear positive trend with the UPV, which is in agreement with the theoretical assumption that ultrasonic pulse velocity is directly dependent on the density of the material, where longitudinal waves are measured.
Erdogan, Correlating sound velocity with the density, compressive strength and Young’s modulus of carbonate rocks, International Journal of Rock Mechanics & Mining Sciences. 41(2004) 871–875
Spanu, Some mechanisms of microstructure weakening in high-porous calcareous stones, Materials and Structures (2006), 39, 525–531.
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