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Online since: July 2012
Authors: Jian Feng Wang, Feng Feng, Peng Sun
Based on the damping characteristics, design a kind of magnetic fluid shock absorber, and the damping force theory formula, derived from the damping force of the formula can be that, according to the design of shock absorber, in the vehicle suspension on the dynamic performance simulation test for the damping-displacement characteristic and speed characteristics is verified by experiments, the proof is in the formula of the damping force of the damping force and the polarization current into nonlinear (secondary) relationship is reasonable, to design the actual shock absorber to really have a certain reference value.Intorduction Introduction At present, the magnetorheological fluid, as a kind of new intelligent materials, is widely used in engineering and vehicles in the fields such as research, the main research fields are various types of active and semi-active damper [1].
Material characterizationof MR fluid at high frequencies [J].
Journal of Sound and Vibration, 2005283 (2) : 121~133
Mechanical science and technology, 2006, 25 (6) : 655~657.
Online since: December 2013
Authors: Zhai Shi, Juan Su, Chun Lan Li, Song Huai Du
With regard to the structure of hardware, [1] presents two techniques that greatly reduce the vulnerability to nuisance tripping: phase detection to eliminate sensitivity to capacitive leakage, and a more elaborate two-stage time delay to reduce vulnerability to transients. [2-5] presents that current transducer were made by different processing and different materials in order to overcomes the problem of the saturation and the low transient accuracy of current transducer.
Acknowledgements This work was financially supported by the Research Project of Xinjiang Higher Educational Institution of China (XJEDU2012I15), the Chinese Nature Science Foundation of China (51177165) and the Prior Period Funded Project of Xinjiang Agricultural University of China (XJAU201121).
[4] Luis M., Ryszard R., Franjo C., “Design of a magneto-optic residual current device using aqueous ferrofluid as the sensing material”, Proceedings of the 21st IEEE Instrumentation and Measurement Technology Conference, Como, Italy, May 18-20, 2004, Vol.2, pp. 804-807
(In Chinese) [6] Mu Longhua, Meng Qinghai, Hu Tianlu, “Selective ground fault protection based on active power of faulted components”, Journal of China University of Mining & Technology, Vol.31, No.4, 2002, pp.380-383.
Online since: October 2009
Authors: Zhuo Yi Yang, Yong Jie Pang, Zai Bai Qin
Because of the distinct difference in the material, structure form and load condition between the deep-sea submersibles and the submarine, it is necessary to consider the application bound of these equations or charts in criteria[1].
The material of the shell is Titanium alloy which is used to deep-sea submersible metals for low weight, strength, and highly corrosion-resistant.
Here are the material parameters: the yield stress s is about 840Mpa; the elastic modulus is equal to 115Gpa; the density is 4540.8kg/m3; the major poisson's ratios is 0.35.
[2] Chen Meixia, Jin Baoyan and Chen Lejia: Ship Science and Technology.
Vol. 30-3 (2008), p.64 [3] Simpson TW, Lin K J and Chen W: International Journal of Reliability and Applications.
Online since: September 2011
Authors: Allan J. Easteal, Norizah Abdul Rahman, Jadranka Travas-Sejdic, Allan J. Easteal
Electrospun nanofibres of PLA/PANI and PLA/P(ANI-co-m-ABA): thermal studies Norizah Abdul Rahman1,a, Allan Easteal1,b and Jadranka Travas-Sejdic1,2,c 1Polymer Electronics Research Centre, Chemistry Department, The University of Auckland, Private Bag 92019, Auckland, New Zealand. 2 MacDiarmid Institute for Advanced Materials and Nanotechnology, New Zealand.
Since the analysis was performed in a nitrogen atmosphere, the mass loss is attributed to extensive non-oxidative degradation that is evidently facilitated by the nanofibrous morphology.The thermal characteristics of the PLA source material as, powder, cast film and NF were determined using DSC as shown in Figure 3A.
Journal of Membrane Science, 282 (2006) 60-70
Online since: September 2013
Authors: Tei Chen Chen, Zong Wei Kang
The annealed ES material coils received from the continuous annealing line (CAL) pass through cleaning, insulation paint coating, paint baking and cooling sections, and are recoiled as ES products, where the CAL includes cleaning, annealing, tempering and finishing processes.
When receiving the paper, we assume that the corresponding authors grant us the copyright to use the paper for the book or journal in question.
Should authors use tables or figures from other Publications, they must ask the corresponding publishers to grant them the right to publish this material in their paper.
Besides, the strip was assumed to be an elastic and perfect plastic material due to its small plastic strain produced in CAL.
Acknowledgement This research was supported by the National Science Council in Taiwan through Grant No.
Online since: February 2020
Authors: Raimundo Pereira de Farias, Antonio Gilson Barbosa de Lima, Robson Araújo de Queiroz, Hallyson Gustavo Guedes de Morais Lima, Ana Raquel Carmo de Lima, Joselito Bastos da Silva Júnior, V.A. Agra Brandão
Cooling and Freezing of Cashew Apple Using Computational Fluid Dynamics: The Effect of the Moisture Content Alves Agra Brandão VANDERSON1,a*, Araújo de Queiroz ROBSON1,b, Gustavo Guedes de Morais Lima HALLYSON1,c, Pereira de Farias RAIMUNDO2,d, Raquel Carmo de Lima ANA1,e, Bastos da Silva Júnior JOSELITO3,f and Gilson Barbosa de Lima ANTONIO1,g 1Department of Mechanical Engineering, Federal University of Campina Grande (UFCG), Zip Code 58429-900, Campina Grande, Paraiba, Brazil. 2Department of Agricultural Sciences, State University of Paraiba (UEPB), Zip Code 58884-000, Catolé do Rocha-PB, Brazil 3Department of Food Engineering, Federal University of Campina Grande (UFCG), Zip Code 58429-900, Campina Grande, PB, Brazil avanderson_agra@hotmail.com, brobson_frr@hotmail.com, challyson@ccta.ufcg.edu.br, drp.eng.tec@gmail.com, eanaraquel_alimentos@hotmail.com, fjoselito.bastos@hotmail.com, gantonio.gilson@ufcg.edu.br Keywords: Temperature
The cold preserves the food by the total or partial inhibition of the main agents that cause changes in the material such as: microbiological activity, enzymatic and metabolic after harvest [8].
The thermophysical properties of biological materials depend on the characteristics of each product, such as moisture content, structure, chemical composition and temperature, andthus, to identify theinfluence of these parameters in thethermo-physicalproperties plays important role for a correct formulation of the heat transfer processes.
International Journal of Refrigeration, v.13, n.6, p.379-392, 1990
Online since: August 2013
Authors: Biao Li, Yong Xin Yang, Qing Rui Yue, Bin Wang, Peng Yang Zhang, Hua Wei Cheng
LTD, MCC Group Beijing100088, China 2 Metallurgical Corporation of China LTD Beijing100028, China 3 Southwest University of Science and Technology, Mianyang 621010,China 4 Dalian University of Technology, Dalian City116024,China ano_1libiao@163.com,byangyongxin@tsinghua.org.cn, cyueqr@vip.163.com,dmccwangbin@126.com, ezlw.20080808@163.com Keywords: CFRP tendon; Anchorage; Mechanical properties; Influencing factors Abstract: According to GB/T 26743-2011, 37 different surface state of 8 mm CFRP tendons are made on the mechanical properties test to determine some mechanical properties such as tensile strength, elastic modulus and elongation rate.
Introduction CFRP tendon is made by binding carbon fiber-reinforced polymer and matrix resin, the stranded continuous carbon fiber as reinforcing fiber, thermosetting resin as matrix material, molding by die extrusion, drawing, fast curing.
Journal of Building Materials, 2007,4(10):493-499 [6] GB/T 26743-2011, Application fiber reinforced composite tendon in structure engineering[S]
Online since: May 2012
Authors: Chien Ting Wu, Ming Cheng Chen
However, point cloud data acquired from 3D laser scanners will produce measuring noise due to the measuring environment, such as air particles, measuring materials, colors, etc.
Given normal paper as material with black and white figures printed, the intensity value can be used to recognize the black and white part of the paper.
Least Squares 3D Surface Matching, International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol. 34, Part 5/W16
Error Models and Propagation in Directly Georeferenced Terrestrial Laser Scanner Networks, Journal of Surveying Engineering, 2005.
Online since: June 2010
Authors: Feng Liu, Zhan Bin Wang, Bin Lin
omenclature x x-coordinate(along circumferential direction) z z-coordinate(along axial direction) h local film thickness p film pressure Kx, Kz correction factors: η dynamics viscosity of lubricant Kx=12+0.0136(Rec) 0.9 vφ permeability of porous material Kz=12+0.0043(Rec) 0.98 ps supply pressure U linear velocity of spindle H thickness of restrictor qv volume flow of fluid c specific heat of fluid A flow areas T film temperature pt pressure of fluid reservoir ρ lubricant density Introduction The performance of high speed spindle system directly influences the development of the high speed machining technology, which is a key technology of AMT (Advanced Manufacturing Technology).
umerical Calculations for Hybrid Ceramic Bearing Lubricated by Water Based Fluid According to the special ceramic materials and the porous restrictor, which is applied for its high rigidity and excellent stability with vibration damping under certain conditions, the numerical calculation program for high speed hybrid bearing was compiled with FORTRAN language.
The above calculation of the bearing is similar to that of common journal bearing where there have been considerable theoretical work on the relative numerical computations[7, 8].
Acknowledgements This work was support by the National Natural Science Foundation of China (No. 50975199).
Online since: September 2007
Authors: Han Seok Seo, Jong Ho Lee, Ho Keun Song, Jae Bin Lee, Jeong Hyun Moon, Jeong Hyuk Yim, Hoon Joo Na, Hyeong Joon Kim
4H-SiC Planar MESFETs on High-Purity Semi-insulating Substrates Jeong Hyuk Yim 1,a, Ho Keun Song1,b, Jeong Hyun Moon1,c, Han Seok Seo1,d, Jong Ho Lee1,e, Hoon Joo Na1,f, Jae Bin Lee2,g and Hyeong Joon Kim 1,h 1 School of Materials Science and Engineering, Seoul National University, Seoul, 151-742, Korea 2 R&D Center, Sangshin Elecom, Choong Chung Nam Do, 339-814, Korea a marine2@snu.ac.kr, bsongho@snu.ac.kr, csilrok6@snu.ac.kr, dboyface1@snu.ac.kr, e elhoho00@snu.ac.kr, fhjna@snu.ac.kr, gjblee@sangshinec.com, hhjkim@plaza.snu.ac.kr Keywords: MESFET, High-purity semi-insulating (HPSI) substrate, Current instability Abstract.
Introduction Because of its excellent properties, such as high electric breakdown field, high saturated electron drift velocity and high thermal conductivity, silicon carbide (SiC) becomes an attractive material for high power microwave devices. 4H-SiC MESFET, particularly, has the capability of high voltage, high output impedance, high matching convenience and wide bandwidth.
Spencer: Journal of Applied Physics Vol. 90(1) (2001),p. 337.
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