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Online since: May 2011
Authors: Zhi Min Zong, Shan Shan Zhang, Yue Xu, Ting Yao, Xian Yong Wei, Shian Sun, Qing Wei, Shao Peng Liu, Gui Zhen Gong
Actually, bio oil contains many compounds, such as hydroxyl acetone, furfural, phenols, levoglucosan, etc., some of which are the important intermediate product for food, medicine or the other materials.
In order to obtain advantage materials, people have tried many approaches to transform the bio mass into some certain species, which are mainly phenols and carbon acids [2-4].
Methods Raw Material.
Cheng: Journal of Analytical and Applied Pyrolysis, Vol.88 (2010), p73 [7] R.
Zheng: Journal of Analytical and Applied Pyrolysis, Vol.80 (2007), p30 [9] P.
In order to obtain advantage materials, people have tried many approaches to transform the bio mass into some certain species, which are mainly phenols and carbon acids [2-4].
Methods Raw Material.
Cheng: Journal of Analytical and Applied Pyrolysis, Vol.88 (2010), p73 [7] R.
Zheng: Journal of Analytical and Applied Pyrolysis, Vol.80 (2007), p30 [9] P.
Online since: July 2015
Authors: Lothar Kroll, Meike Röhrkohl, Christian Müller, Johannes Freund, Sandra Gelbrich, Carolin Petzoldt
Textile reinforced concrete is one of those innovative materials.
Materials and Methods A load-oriented shell structure was developed to realize efficient and multi-functional material combinations.
Combining the favorable properties of two different composite materials produces a new hybrid material, characterized by high durability and surface quality.
In all production methods and materials, it was possible to produce hybrid material of less than 15 mm thickness.
Kroll, A Fiber-Reinforced Architectural Concrete for the Newly Designed Façade of the Poseidon Building in Frankfurt am Main, Journal of Materials Science Research. 3, 3 (2014) 33-39, doi:10.5539/jmsr.v3n3p33, ISSN 1927-0585
Materials and Methods A load-oriented shell structure was developed to realize efficient and multi-functional material combinations.
Combining the favorable properties of two different composite materials produces a new hybrid material, characterized by high durability and surface quality.
In all production methods and materials, it was possible to produce hybrid material of less than 15 mm thickness.
Kroll, A Fiber-Reinforced Architectural Concrete for the Newly Designed Façade of the Poseidon Building in Frankfurt am Main, Journal of Materials Science Research. 3, 3 (2014) 33-39, doi:10.5539/jmsr.v3n3p33, ISSN 1927-0585
Online since: October 2014
Authors: Ming Sheng Zhao, En An Chi, Jian Hua Zhang, Qiang Kang, Tie Jun Tao
Acknowledgements
This work was supported by the grants from the Guizhou Science and Technology Plan Project (No.
Journal of the Liaoning Technical University( Natural Science), 2008 (27):142~144
Journal of University of Science and Technology Beijing, 2006, 28(2): 101−103
Chinese Journal of Rock Mechanics and Engineering, 2010, 29(Supp. 1): 2720~2726
Chinese Journal of Rock Mechanics and Engineering, 2008, 27(2): 323-330.
Journal of the Liaoning Technical University( Natural Science), 2008 (27):142~144
Journal of University of Science and Technology Beijing, 2006, 28(2): 101−103
Chinese Journal of Rock Mechanics and Engineering, 2010, 29(Supp. 1): 2720~2726
Chinese Journal of Rock Mechanics and Engineering, 2008, 27(2): 323-330.
Online since: September 2014
Authors: Shu Wang Duo, Yu Chuan Chang, Ting Zhi Liu, Hao Zhang
Many efforts have been made to develop protective coatings to against AO erosion, Al2O3, SiO2 is thought as the best materials[3,4].Generally, Al2O3, SiO2 coating are prepared by physical vapor deposition[5], but these inorganic coatings have a different coefficient of thermal expansion from substrates, they can be cattle, and crack easily, and can not protect substrate materials well.
Polyimide is one of the most used materials on spacecrafts as substrate materials of solar panels.
The study is helpful for developing high performance materials against AO erosion.
Degradation of spacecraft materials in the space environment, MRS Bulletin 35(2010): 20-24
Journal of Applied Polymer Science 119(2011):794-802 [8]F.
Polyimide is one of the most used materials on spacecrafts as substrate materials of solar panels.
The study is helpful for developing high performance materials against AO erosion.
Degradation of spacecraft materials in the space environment, MRS Bulletin 35(2010): 20-24
Journal of Applied Polymer Science 119(2011):794-802 [8]F.
Online since: December 2013
Authors: Jing Liu
Journal of Capital Normal University (Natural Science Edition), Vol. 27 (2006), p. 57-63
[5] Haberl R, Perfler R, Mayer H: Constructed Wetland in Europe.
C.: Beneficial Effects of Plants in the Remediation of Soil and Groundwater Contaminated with Organic materials-Critical Reviews.
Journal of Lake Sciences, Vol. 14 (2002), p. 179-182 [10] Shuiping Cheng, Yikua Xia.
Journal of Lake Sciences, Vol. 10 (1998), p. 66-71 [11] Ellis J.
Materials Transaction, Vol. 44 (2003), p. 305-312 [20] Richardson C.J.: Mechanisms Controlling Phosphorus Retention Capacity in Freshwater Wetlands.
C.: Beneficial Effects of Plants in the Remediation of Soil and Groundwater Contaminated with Organic materials-Critical Reviews.
Journal of Lake Sciences, Vol. 14 (2002), p. 179-182 [10] Shuiping Cheng, Yikua Xia.
Journal of Lake Sciences, Vol. 10 (1998), p. 66-71 [11] Ellis J.
Materials Transaction, Vol. 44 (2003), p. 305-312 [20] Richardson C.J.: Mechanisms Controlling Phosphorus Retention Capacity in Freshwater Wetlands.
Online since: July 2008
Authors: Shao Peng Wu, Bo Li, Hong Wang, Cong Hui Liu
Numerical Simulation of Temperature Stress on Asphalt Pavement of
Concrete Bridge Deck in Cold Region
Hong WANG1, a, Shaopeng WU
2, b, Bo LI3, c, and Conghui LIU
4, d
1
Key Laboratory of Silicate Materials Science and Engineering
(Wuhan University of Technology), Ministry of Education, Wuhan 430070, China
2
Key Laboratory of Silicate Materials Science and Engineering
(Wuhan University of Technology), Ministry of Education, Wuhan 430070, China
3
Key Laboratory of Silicate Materials Science and Engineering
(Wuhan University of Technology), Ministry of Education, Wuhan 430070, China
4
Key Laboratory of Silicate Materials Science and Engineering
(Wuhan University of Technology), Ministry of Education, Wuhan 430070, China
a
wanghong@whut.edu.cn, bwusp@whut.edu.cn, clip@whut.edu.cn, dliuconghui666@126.com
Keywords: asphalt pavement, concrete bridge, cold region, temperature stress
Abstract: Flexible pavement plays an important role in the primary concrete
Table 1 Material parameters Thermal conductivity [W/(m•°C)] Specific heat[J/Kg•°C] Density[kg/m 3] Elastic modulus[MPa] Linear contraction factor(10 -5) Poisson's ratio AC 13 1.504 946 2100 1800 1.58 0.25 AC 16 1.826 1013 2100 1800 1.58 0.25 Concrete bridge deck 1.54 840 2500 30000 1.0 0.2 2.4 Boundary conditions 2.4.1 Thermal boundary condition Conjugating the first law of the thermodynamics, which states that thermal energy is conserved, and Fourier's law, that relates the heat flux with the thermal gradient, the problem of heat transfer by conduction within the pavement is solved.
Journal of Materials in Civil Engineering, Vol. 17(2005), p. 465-475
Balghunaim: Journal of Materials in Civil Engineering, Vol. 6(1994), p. 5282-5296
Chiasson, Ph.D., P.E., and Cenk Yavuzturk etc: Journal of Materials in Civil Engineering, Vol. 20(2008), p. 118-127
Table 1 Material parameters Thermal conductivity [W/(m•°C)] Specific heat[J/Kg•°C] Density[kg/m 3] Elastic modulus[MPa] Linear contraction factor(10 -5) Poisson's ratio AC 13 1.504 946 2100 1800 1.58 0.25 AC 16 1.826 1013 2100 1800 1.58 0.25 Concrete bridge deck 1.54 840 2500 30000 1.0 0.2 2.4 Boundary conditions 2.4.1 Thermal boundary condition Conjugating the first law of the thermodynamics, which states that thermal energy is conserved, and Fourier's law, that relates the heat flux with the thermal gradient, the problem of heat transfer by conduction within the pavement is solved.
Journal of Materials in Civil Engineering, Vol. 17(2005), p. 465-475
Balghunaim: Journal of Materials in Civil Engineering, Vol. 6(1994), p. 5282-5296
Chiasson, Ph.D., P.E., and Cenk Yavuzturk etc: Journal of Materials in Civil Engineering, Vol. 20(2008), p. 118-127
Online since: September 2011
Authors: Ming Tian Li, Shu Cai Li, Jun Lian He
With the development of the computer lattice model was also used to simulate fracture process of heterogeneous materials.
Oh: Materials and Structures, Vol.16(1983), p.155-177 [2] E.
International Journal of Rock Mechanics and Mining Sciences.
Zhou: International Journal of Rock Mechanics and Mining Sciences, Vol.41(2004), p. 452 [7] Y.S.
Hu: Journal of Hydraulic Engineering.
Oh: Materials and Structures, Vol.16(1983), p.155-177 [2] E.
International Journal of Rock Mechanics and Mining Sciences.
Zhou: International Journal of Rock Mechanics and Mining Sciences, Vol.41(2004), p. 452 [7] Y.S.
Hu: Journal of Hydraulic Engineering.
Online since: September 2012
Authors: Bao Xu Song, Li Kun Gao, Hui Xin Dai, Wei Zhao
Materials and Methods
Representative sampling is a decisive component to any test work.
Iron phase Hematite Limonite Chlorite Iron in total (%) Content (%) 26.24 2.28 4.31 32.83 Distribution (%) 79.93 6.95 13.13 100.00 To investigate the process mineralogy of the samples, a wide variety of instruments were used as below: The optical microscope is used to observe mineral textures, and to determine mineral quantities by point counting; X-ray diffractometer (XRD) is used to identify minerals with a high degree of certainty, and to qualitatively determine mineral contents in powdered materials; The scanning electron microscope (SEM) is one of the most versatile and widely used tools of modern science as it allows the study of both the morphology and composition of materials.
References [1] Santos, L.D. and Brandão, P.R.G.: submitted to Journal of Minerals Engineering (2003) [2] Santos, L.D., Brandão, P.R.G. and Sampaio, D.A.: submitted to Journal of Minerals and Metallurgical Processing (2005) [3] E.
Clout: submitted to Journal of Minerals Engineering (2007) [4] N.O.
Whiteman: submitted to Journal of Minerals Engineering (2011)
Iron phase Hematite Limonite Chlorite Iron in total (%) Content (%) 26.24 2.28 4.31 32.83 Distribution (%) 79.93 6.95 13.13 100.00 To investigate the process mineralogy of the samples, a wide variety of instruments were used as below: The optical microscope is used to observe mineral textures, and to determine mineral quantities by point counting; X-ray diffractometer (XRD) is used to identify minerals with a high degree of certainty, and to qualitatively determine mineral contents in powdered materials; The scanning electron microscope (SEM) is one of the most versatile and widely used tools of modern science as it allows the study of both the morphology and composition of materials.
References [1] Santos, L.D. and Brandão, P.R.G.: submitted to Journal of Minerals Engineering (2003) [2] Santos, L.D., Brandão, P.R.G. and Sampaio, D.A.: submitted to Journal of Minerals and Metallurgical Processing (2005) [3] E.
Clout: submitted to Journal of Minerals Engineering (2007) [4] N.O.
Whiteman: submitted to Journal of Minerals Engineering (2011)
Online since: October 2008
Authors: Ming Wei Wang, Liwen Zhang
Zhang
2,b
1
School of Mechanical Engineering and Automation, Dalian Polytechnic University, Dalian
116034,China
2
School of Material Science and Engineering, Dalian University of Technology, Dalian 116085,China
a
wangmw@dlpu.edu.cn, bcommat@student.dlut.edu.cn
Keywords: BT20 Ti-alloy, Vacuum hot bulge forming, FEM, Numerical simulation
Abstract.
Mechanical properties and thermal expansion coefficient of materials are measured by experiment.
Kang: Journal of Harbin Institute of Technology, Vol. 38 (2006) No.1, pp. 191
Li: Chinese Journal of Mechanical Engineering, Vol. 28 (1992) No.1, pp. 53 (In Chinese)
Dean: Journal of Materials Processing Technology, Vol. 153-154 (2004), pp. 122
Mechanical properties and thermal expansion coefficient of materials are measured by experiment.
Kang: Journal of Harbin Institute of Technology, Vol. 38 (2006) No.1, pp. 191
Li: Chinese Journal of Mechanical Engineering, Vol. 28 (1992) No.1, pp. 53 (In Chinese)
Dean: Journal of Materials Processing Technology, Vol. 153-154 (2004), pp. 122
Online since: June 2013
Authors: Rui Liu, Xiong Chen, Chang Sheng Zhou
Due to the different thermal resistance ability, steps are formed at the interface of two materials.
Several thermal protection materials have been successfully used in solid-propellant motors, such as carbon-based materials, reinforced-polymer composites, refractory metals and ceramics[3,4].
C is also the interface of two materials.
O.: AIAA Journal Vol. 3 (1965), p.1250-1257 [5] Evans B., Kuo K.
K.: AIAA Paper No.2007-5776 [6] Piyush Thakre, Vigor Yang: Journal of Propulsion and Power Vol. 24 (2008), p.822-833
Several thermal protection materials have been successfully used in solid-propellant motors, such as carbon-based materials, reinforced-polymer composites, refractory metals and ceramics[3,4].
C is also the interface of two materials.
O.: AIAA Journal Vol. 3 (1965), p.1250-1257 [5] Evans B., Kuo K.
K.: AIAA Paper No.2007-5776 [6] Piyush Thakre, Vigor Yang: Journal of Propulsion and Power Vol. 24 (2008), p.822-833