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Tires are a key part of the vehicle, mainly constituted by rubber materials.
However, there are no studies on the extrusion process of the tire rubber material; extrusion processes of different rubber materials are also different.
Effects of the actual diameters and diameter ratios of barrels and dies on the elastic swell and entrance pressure drop of natural rubber in capillary die flow, Journal of applied polymer science. 2002, 86 (2002) 1762-1772
Rheological behavior and processability of polypropylene blends with rubber ethylene propylene diene terpolymer, Journal of Applied Polymer Science. 81 (2001) 1-10
Finite element analysis of rubber extrusion forming process for automobile weather strip, Journal of materials processing technology. 201 (2008) 168-173.

Different damage mechanics models have been proposed by researchers to calibrate the failure behavior of materials.
Damage mechanics is a framework which aims to simulate the failure behavior of materials.
[3] J.Lemaitre, A continuous damage mechanics model for ductile fracture, Journal of engineering materials and technology, Vol.107 (1985) p.83-89
[6] Y.Bao, T.Wierzbicki, On fracture locus in the equivalent strain and stress triaxiality space, International journal of mechanical sciences, Vol.46(2004) p.81-98
Viganò, Ductile fracture locus of Ti-6Al-4V titanium alloy, International journal of mechanical science, Vol.54 (2012) p.121–135 [9] M.

It can be produced from carbonaceous source materials at high temperature.
This characteristics showed that BCZY f-ACEFB has potential to be introduce as a part of materials for composite cathode instead of as electrolyte materials.
Series: Journal of Physics: Conf.
Materials Science-Poland. 25 (2007) 755-765
Materials Science Forum. 819 (2015) 140-145 [9] Barison, S, M Fabrizio, S Fasolin, F Montagner, and C Mortalo.

Influence of Density on the Thermal Conductivity of Fiberglass Felt Yong Yang1,a,Xueyu Cheng2,b, Zhaofeng Chen1,c,Renli Fu1,d,Zhou Chen1,e, Jinglian Qiu1,f,Dan Su1,g 1College of Material Science and technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P.R.China 2Suzhou V.I.P.New Material Co., Ltd., Hong Da Fang Yuan Group, Suzhou 215000, P.R.China *Corresponding author.E-mail:zhaofeng_chen@163.com Keywords: Thermal conductivity, Density, Fiberglass felt, Heat-transfer mechanism.
Introduction Fiberglass felt are used widely as insulations and building sections in commercial and industrial applications[1].Coefficient of thermal conductivity for the Fiberglass felt is an important index,which could evaluate the thermal insulation performance of the fiberglass felt.In general,thermal insulations are classified into the following two types of materials:isotropic materials with a uniform thermal conductivity and anisotropic materials with a nonuniform thermal conductivity[2].Fiberglass felt are the isotropic materials.The thermal conductivity of the material is defined as the amount of heat crossing a unit area of the material per unit time per unit temperature gradient[3].In porous materials heat is propagated by three processes:thermal conductance through the solid and both radiation and convection through the pores[3].
In this paper,using this heat-transfer mechanism of the porous materials explains the relationship between thermal conductivity and density of the fiberglass felt.
Generally speaking,thermal properties of a fibrous material depend on:thermal properties of each phase(fiber and air),fiber volume fraction,and fiber size, orientation and mass distribution[4].The value of the thermal conductivity of heat-insulating materials,among which are fibrous materials,is affected by their density and kind,the size and location of pores,the chemical composition and molecular structure of hard constituents,the emissivity of surfaces bounding the pores,and the kind and pressure of the gas filling the pores[5].Main aim of this paper is to describe the relationship between thermal conductivity and density.According to the aim,we study the effect of density of fiberglass felt and analysis the reason.
References [1] N.E.WIJEYSUNDERA and M.N.A.HAWLADER: Effects of condensation and liquid transport on the thermal performance of fibrous insulations, Heal Mass Transfer.Vol.35,No.l0, pp.2605-2616,1992 [2]T.Ohmura1,2, M.Tsuboi1 and T.Tomimura3:Estimation of the Mean Thermal Conductivity of Anisotropic Materials.International Journal of Thermophysics, Vol.23,No.3,May 2002(©2002) [3] ARTHURL.LOEB: Thermal Conductivity: VIII, A Theory of Thermal Conductivity of Porous Materials, Journal of the American Ceramic Society-Loeb, Vol.37, No.2.p.96 [4] Moran Wang, Jihuan He, Jianyong Yu, Ning Pan: Lattice Boltzmann modeling of the effective thermal conductivity for fibrous materials, International Journal of Thermal Sciences 46(2007)848–855 [5] M.G.Kaganer, Heat Insulation in Low-Temperature Technology [in Russian], Mashinostroenie, Moscow(1966)

Jing, Preparation and Characterization of Cordierite Powders by Water-Based Sol-Gel Method’, Indian Journal of Engineering and Materials Sciences, 18 (2011) 221–226
Abed, Wear and friction analysis of bio-ceramic cordierite system as orthopedic material, Materials Today: Proceedings, 60 (2022) 1934–1941
Pundiene, Development of Cordierite Ceramics from Natural Raw Materials, Advances in Science and Technology, 89 (2014) 94–99
Cavalieri, Sintering of Cordierite Based Materials, Ceramics International, 29 (2003) 159–168
Yamamuro, Solutions able to reproduce in vivo surface‐structure changes in bioactive glass‐ceramic A‐W3, Journal of biomedical materials research, 24 (1990) 721–734

Minoura: Advanced Materials Vol. 12 (2000), p. 1214-1217
Minoura: Advanced Materials Vol. 15 (2003), p. 814-817
Spiccia: Journal of Sol-Gel Science and Technology Vol. 40 (2006), p. 45-54
Shin: Advanced Materials Vol. 17 (2005), p. 2349-2353
Frank: Chemistry of Materials Vol. 14 (2002), p. 1042-1047

Ruano: Texture evolution during large-strain hot rolling of the Mg AZ61 alloy, Materials Science and Engineering A, 355 (2003), 68-78
Ruano: Accumulative roll bonding of a Mg-based AZ61 alloy, Materials Science and Engineering A, 410-411 (2005), 353-357
Chen: Microstructure and mechanical properties of Mg-Al-Zn alloy sheets severely deformed by accumulative roll-bonding, Journal of Materials Science, 42 (2007), 9256-9261
Fatemi-Varzaneh: An analysis to plastic deformatiom behavior of AZ31 alloys during accumulative roll bonding process, Journal of Materials Science, 45 (2010), 4494-4500
Vogt: Properties of Magnesium Strips produced by Twin-Roll Casting and Hot Rolling, Materials Science Forum, 690 (2011), 21-24

The FDM technology thus offers the potential to produce the functional parts with a variety of materials including composite materials.
Material Science and Engineering A301 (2006) 125-130
Journal of Engineering Manufacture, 2010, 220(72): 2541-2550
Melt flow behavior of poly-e caprolactone in fused deposition modelling, Journal of Material Science: Material in Medicine, 2011, 19(7);2541-2550
Tsinghua Science and Technology, ISSN 1007-0214 05/38.

Optimal design of the aluminum electrical railcar under uncertainty of material property Tae Min Cho1,a, Byung Chai Lee1,b and Tae Soo Kwon2,c 1 Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, 373-1, Guseong-dong, Yuseong-gu, Daejeon, South Korea 2 Korea Railroad Research Institute, 360-1, Woulam-Dong, Uiwang-City, Kyonngi-Do, South Korea a ctm@kaist.ac.kr, bbchlee@kaist.ac.kr, ctskwon@krri.re.kr Keywords: Material property, Uncertainty, Random variable, Reliability-based design optimization, Aluminum electrical railcar.
Abstract In this study, optimal design of the aluminum electrical railcar under uncertainty of material property is performed.
Introduction There are a lot of uncertainties in the engineering problems such as material property, geometric dimensions, loads, and boundary conditions.
In this study, the optimal design of the aluminum electrical railcar under uncertainty of material property is performed.
Lee: Journal of Mechanical Science and Technology, Vol. 24 (2010), p. 279

Experimental Set Up and Procedure Materials for Experiments.
In order to reduce the casting defects; the composite materials were subjected to hot rolling process at 4000C.
Different weight percentage of Al 6061- SiCp composite materials were fabricated by ultrasonic cavitation method and the fabricated materials were subjected to hot rolling process to reduce the casting defects.
References [1] J.Hashim, L.Looney, & M.S.J.Hashmi; Metal Matrix Ccomposites-Production by stir casting method, Journal of material processing technology, Vol. 92-93, p.1-7, (1999) [2] J.Hashim, L.Looney, & M.S.J.Hashmi; The enhancement of wettability of SiC particles in cast Al-matrix composites, Journal of material processing technology, Vol.119, p.329-335, (2001) [3] J.Hashim, L.Looney, & M.S.J.Hashmi; Wettability of SiC particles by molten Al-alloy, Journal of material processing technology, Vol.119, p.324-328, (2001) [4] J.Hashim, L.Looney, & M.S.J.Hashmi; Particle distribution in cast MMC-Part I, Journal of material processing technology, Vol.123, p.251-257, ( 2002) [5] Y.Sahin; Preparation and some properties of SiC particle reinforced aluminium alloy composites, Materials & Design, Vol.24, p.671-679, (2003) [6] Yong Yang, Jie Lan & Xiaochun Li, Study on bulk aluminum matrix nano-composite fabricated by ultrasonic dispersion of nano-sized SiC particles in molten aluminum alloy
, Materials Science and Engineering A, Vol.380, p.378–383, (2004) [7] Yong yang & Xiaochun Li et al; Ultrasonic cavitation based manufacturing of bulk Al matrix nanocomposites, Journal of Manufacturing Science and Engineering, Vol.129, p.497-501, (2007) [8] Yong yang & X.Li; An experimental determination of optimum processing parameters for Al/SiC metal matrix composites made using ultrasonic consolidation, Journal of Engineering materials and technology, Vol.129, p.538-549, (2007) [9] G.Cao, H.Konishi & X.Li; Recent developments on ultrasonic cavitations based solidification processing of bulk magnesium nanocomposites, International journal of metal casting, winter- 08, p.57-68, (2008)