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Online since: April 2012
Authors: Ping Bai
In another way, it is very hard to form hydraulic membrane in coupling friction pair because of poor lubrication of pure water, and it is really necessary to use some special materials, structures and techniques of high machining precision to solve the problems of dry friction and clogging [2].
However, because of unbalanced radial force resulted from large pressure of outlet and small pressure of inlet when high-pressure gear pump treated, serious wearing between axle journal of drive shaft and bearing hole exits and causes not ideal dynamic characteristics of pump, with reduction of volumetric efficiency and bad control of leakage after long run. 2.New structure design and experimental research In this design, a rectangular groove iss set between the inner-hole of front and back plates towards the inlet side of high-pressure gear pump (as Fig.1 and Fig.2) to make a connection for the high-pressure liquid at the inlet of high-pressure gear pump.
The material of floating plate was ADC12, with its elements: Si=(9.6~12)%, Cu=(1.5~3.5)%, Mg=0.3%, Mn=0.5%, Ni=0.5%, Fe=1.3%, Zn=1%, allowance of Al=(79~85.3)%.
The material of gear and shaft was 20CrMnTi.
Jiangsu science and technology Press.In Chinese. 1981.1
Online since: October 2011
Authors: Xiao Huo Li, Chao Wang, Jiang Wei Cao, Shu Ming Liu
The isotropic linear elastic material [3] (45 steel) is used in the carriage, and the material parameters of the isotropic linear elastic material (45 steel) are: E = 2.1×1011 N/m2, μ = 0.3, ρ = 7800 kg/m3.
(4) As the material of the carriage is 45 steel, the material’s damping ratio (0.125) is taken into the formula (4), and the module of the frequency response function is got while resonance.
Acknowledgments The research is supported by: 1National Natural Science Foundation-funded Project (59774033); 2Project Guiding Scientific and Technological research of China Coal Industry Association (MTKJ-08-311); 3Liaoning Province Key Laboratory of large-scale Mining Equipment (the second batch of sci. & tech. projects of Liaoning province (2008403010)).
Mi and C.Yang: Journal of Chongqing University, Vol.26(2003) No.2, p.90
Online since: July 2011
Authors: Jun Duo, Xiao Min Wang
Experiment Test material is cast AM60 magnesium alloy; the specimen is 30 mm×20 mm×5 mm rectangular sheet.
Materials Protection,2007,40(2):4~6
Materials Protection, 2002, 35 (7) : 1~3
Journal of Shenyang Normal University(Nature Science),2006, 24(4):460~462
Online since: November 2012
Authors: Artur Chrobak, Grażyna Chełkowska, Nirina Randrianantoandro, Grzegorz Ziółkowski
Introduction Development of modern technologies requires new materials that exhibit extremely hard magnetic properties.
The low intensity of remanence relaxation (H=0 T) for x = 0.08 can be explained taking into account that this material is magnetically hard.
The obtained results from generated as well as empirical curves indicate that the proposed approach leads to physically reasonable conclusions and can be used in the field of magnetic characterization of hard magnetic materials.
Acknowledgments This work was partially supported by the Polish Ministry of Science and Higher Education under grant N N202 200039 and the TWING project co-financed by the European Social Fund.
Lupu, Journal of Non-Crystalline Solids 250-252 (1999) 751-756
Online since: August 2021
Authors: Petr Cikrle, Dalibor Kocáb, Petr Misák
This level is already commonly used in technical practice in relation to the so-called characteristic value of the material property.
It would more beneficial to use the Schmidt L rebound hammer or SilverSchmidt L rebound hammer with a mushroom plunger.Acknowledgment This paper has been written as a part of project No. 19-22708S, supported by the GAČR - Czech Science Foundation.
Construction and Building Materials. 2014, 53, 333-347.
Epitoanyag - Journal of Silicate Based and Composite Materials [online]. 2011, 63(1-2.), 2-8.
Online since: November 2012
Authors: Xiao Jiang, Long Di Cheng, Elena Stojanovska, Wen Hong Fan, Qin Wang
The products of akund fibers have good wearing characteristics, for example, good hydraulic conductivity which can make the body excretion of sweat through the fabric easily, so the discomfort will be reduced and big holes inside of the fibers make them a warm material [1~3].
Fig .2 The surface of akund fibers Material and Method.
Mixed fibers of akund and cotton fibers are used as materials.
Carding processing length (see Fig. 3) is an important parameter if we want to transform the raw material into a smooth coherent web by disentangling and ordering the fibers and eliminating the unwanted impurities, and it is suggested that carding processing length is longer than the main length of fiber.
Strcuture and Thermal Properties of Kapok[J].Journal of Zhongyuan University of Technology,2008,19:47-51
Online since: October 2012
Authors: Guo Fu Li, Lan Lan Liu, Yi Hua Liu, Xiang Bo Ma
One is that the manufacturing resources belonging to the MS only are Key resources, such as new production facility, monopolistic row materials etc.
The quantity and kinds of equipment, raw materials and other resources are ascertained after making the production plan.
The measurement of manufacturing system complexity based on the key resources simplifies the complexity for measuring manufacturing system complexity and hence saves manpower resources, material resources and other costs on information acquisition.
Acknowledgment This paper supported by the Natural Science Foundation of Zhejiang Province, China (LY12E09001, Y1080429); The Key Subject Program of Ningbo, China (szxl1055).
Rao: Chinese Journal of Mechanical Engineering, Vol. 42 (2006) No.7, pp.8-13.
Online since: October 2015
Authors: Bryan B. Pajarito, Reymark D. Maalihan
Knowing the effect of colorant on PE degradation will contribute to design and manufacturing of oxo-biodegradable PE films with engineered material properties.
Experimental Materials.
Acknowledgement The authors acknowledge the Department of Science and Technology, through the Engineering Research and Development for Technology, for the research grant.
[7] Maryudi, Hisyam A, Yunus R.M and Bag M.D.H, Thermo-oxidative degradation of high density polyethylene containing manganese laurate, International Journal of Engineering Research and Applications 3 (2013) 1156–1165
[12] Shawaphun S, Manangan T and Wacharawichanant S, Thermo- and photo-degradation of LDPE and PP films using metal oxides as catalysts, Advanced Materials Research 93 (2010) 505–509
Online since: January 2009
Authors: Adam Piłat
They depend on the stator dimensions and used material properties.
The formalized geometry is used at the optimization stage to satisfy the maximum force criterion and other criteria related to eddy currents looses, thermal heating, material properties, controller performance, etc.
The numerical calculations were performed for the following materials: iron assigned to the stator and rotor, cooper assigned to coils and air assigned to free levitation space.
Setting of the material properties has been done by the appropriate assignment of relative permeability and electric conductivity to subdomains.
[5] Piłat, A.: FEMLab software applied to active magnetic bearing analysis, International Journal of Applied Mathematics and Computer Science. vol. 14 no. 4 spec. iss.: Issues in modelling, optimization and control, (2004), pp. 497 ÷ 501 [6] Piłat, A.: Automatic generation of Active Magnetic Bearing geometry with COMSOL Multiphysics, Proc. of Computer Methods and Systems CMS'07, Krakow, Poland, (2007), pp. 147150, [7] Schweitzer, G.: Characteristics of a Magnetic Rotor Bearing for Active Vibration Control, Paper C239/76, Proc. of First Int.
Online since: March 2009
Authors: Sandro Solmi, Roberta Nipoti, Francesco Moscatelli, Antonella Poggi, Fabrizio Tamarri, G. Pizzochero
Furthermore, the use of a high N dose gives rise to the amorphisation of the surface layer with the consequent advantage of a faster oxidation rate with respect to the crystalline material [5].
Haney: Journal of Electronic Materials Vol. 37 (2008), p. 646 [2] T.
Canino: Materials Science Forum Vols. 457-460 (2004), p. 945 [7] S.
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