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The use of such small clearances is possible since the bush and journal material is rigid, easily machined and maintains a very stable shape in water (no water soaking).
Elastic bearings are made of polymer materials of good tribological properties and relatively low degree of water soaking.
The use of polymer materials of relatively low hardness allows operation of these types of bearings with a non-hardened journal which constitutes a significant cost advantage.
The relatively low rigidity of bush materials allows for tolerating a certain degree of shaft misalignment.
The above values are representative of typical properties of bearing materials employed in elastic polymer bushes and rigid bushes of sintered bronze with graphite.

Materials.
Riot shield Polycarbonate VS E-waste PCB Materials.
Defence Science Journal, 58(2) (2008) 227-237
Defence Science Journal, 64(1) (2014) 55-61
Social and Behavioural Sciences. 57 (2012) 331-338

Journal Of Applied Physics 85, no. 6 (Mar 1999): 3348-51
Smart Materials & Structures 20, no. 3 (Mar 2011)
Journal Of Magnetism And Magnetic Materials 324, no. 13 (Jul 2012): 2147-52
Smart Materials & Structures 19, no. 4 (Apr 2010)
Journal of Magnetism and Magnetic Materials 320, no. 3 (2008): 158-63

Journal of Chemical and Pharmaceutical Science, 10(1), 267-269
Materials Today: Proceedings
Materials Today: Proceedings
RESEARCH JOURNAL OF PHARMACEUTICAL BIOLOGICAL AND CHEMICAL SCIENCES, 7(6), 2471-2477
RESEARCH JOURNAL OF PHARMACEUTICAL BIOLOGICAL AND CHEMICAL SCIENCES, 8(3), 1971-1979

Chen: An algorithm for the kinematic design of gear transmissions with high reduction ratio, Materials Science Forum, Vol. 505-507 (2006), p. 1003 [13] L.C.
Chen: On the Kinematics and Statics of Planetary Simple Gear Reducers, Journal of Advanced Materials Research, Vol. 591-593 (2012), p. 2165 [16] L.C.
Tang: The Kinematics of Eight-speed Planetary Gear hubs for Bicycles, Journal of Applied Mechanics and Materials, Vol. 232 (2012), p. 955 [17] L.C.
Tang: The Kinematic Design of 2K-2H Planetary Gear Reducers With High Reduction Ratio, Journal of Applied Mechanics and Materials, Vol. 319 (2013), p. 610 [19] L.C.
Tang: The Engineering Design of Helical Spur Gear Transmission with Single Gear pair for Electric Scooter,” Journal of Applied Mechanics and Materials, Vols.764~765 (2015), p. 374 [20] L.C.

Soft Compressible Porous Mat for “Flying” Vehicles: Model and Numerical Analysis Yangshuai Liu1, Jihuan He2, a 1College of Science, Donghua University, 2999 North Ren-Min Road, Shanghai 201620, China 2National Engineering Laboratory of Modern Silk, College of Textile and Clothing Engineering, Soochow University, P.O.
For example, utilizing the carrying capacity of the air in the porous media, the gas-lubricated journal bearing has been devised to optimize the traditional oil bearing by its neatness, cheaper raw material, better capacity and other advantages [1-4].
In this paper, we propose a new thought of utilizing the aerodynamics to decrease the fuel consumption of the vehicles which run on the high way or overhead road laying with the specific tracks made of porous materials.
Hwang: Journal of Physics D: Applied Physics Vol. 27(1994), p. 634
Yu: Textile Research Journal Vol. 4(2007), p. 205.

Enterprise Development lost momentum, such as the lost of high-end professionals, the lack of investment in research and development of science and technology, and so on.
Through strengthening the control of construction technology, building materials and acceptance of the implementation plan, it will ensure the realization of low-carbon construction entities.
Sustainable development pattern analysis of project contract enterprise under low-carbon background Through the low-carbon correlation knowledge study and the guidance, it will form strong low-carbon awareness in the company interior which can enhance the sense of social responsibility of the staff and will build a knowledge networks platform based on low carbon building including international advanced low carbon buildings model, technical guidance, the guide for the use of new low carbon materials, and so on.
Architecture Journal, Vol.7(2010), p.1-6
Sustainable development framework and sustainability investigation for Chinese construction enterprises Chin civil engineering journal, 2009,42(2), pp.126-130

Hydroxyapatite and tricalcium phosphate ceramics are good choices for designing such materials.
Polak, Third Generation Biomedical Materials science. 295 (2002) 1014-1017
Schepers, Bone Healing in Porous Implants; A Histological and Histometrical Comparative Study on sheep, Journal of Materials: Materials in Medicine. 11 (2000) 711-717
Bonfield, Effect of powder characteristics on the sinterability of hydroxyapatite powders, Journal of Materials Science: Materials in Medicine. 12 (2001) 163-171
Bonfield, Calcining influence on the powder properties of hydroxyapatite, Chemistry and Materials Science. 12 (2004) n.2.

Metallurgy of Highly Wear-Resistant Indefinite-Chill Work Roll Materials for Hot Rolling Mills Armin Paar1,a*, Michael Aigner1,b, Coline Béal2,c and Christof Sommitsch2,d 1Eisenwerk Sulzau-Werfen, R. & E.
Weinberger AG, Bundesstraße 4, 5451 Tenneck, Austria 2Graz University of Technology, Institute of Materials Science, Joining and Forming Kopernikusgasse 24/1, 8010 Graz, Austria aarmin.paar@esw.co.at, bmichael.aigner@esw.co.at, ccoline.beal@tugraz.at, dchristof.sommitsch@tugraz.at Keywords: Indefinite-chill, work roll material, wear resistance, carbide types, alloy development, thermodynamic calculations, graphitic high-speed steel, phase composition, phase analysis Abstract.
Indefinite-chill materials are used as shell materials for cast work rolls for surface-critical applications in hot rolling mills.
Experimental Investigated materials.
Materials Science Forum 879 (2016), Trans Tech Publications, Ltd., 1431-1436, DOI: https://doi.org/10.4028/www.scientific.net/msf.879.1431

Raghupathy, Modelling, analysis and optimization of weld bead parameters of nickel based overlay deposited by plasma transferred arc surfacing, Archives of Computational Materials Science and Surface Engineering.1(2009)174–182
Journal of Material Processing Technology. 88 (1999) 266–275
D′Oliveira, Nicrsib coatings deposited by plasma transferred arc on different steel substrates, Journal of Materials Engineering and Performance. 22(2013) 590–597
Murugan, Investigations on the influence of surfacing process parameters over bead properties during stainless steel cladding, Materials and Manufacturing Processes. 27(2012) 69–77
Kukreja, An analysis on bead characteristics in material deposition by PTAW process, Applied Mechanics and Materials. 592-594 (2014) 33 – 37.