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Online since: December 2010
Authors: Yi Yan Chen, Fei Cui, Xiao Wei Yi, Qi Ming Wu, Rui Juan Jiang
However, both the technologies and the materials for structural health monitoring and diagnose are not fully developed by now [6].
If the two suspenders at the same anchorage are designed with different materials, the extra inconvenience both in design and construction of the arch bridge will be induced.
The material properties of the bridge are listed in Table 1, in which E, α, ν,G, ρ and σy are elastic modulus, coefficient of the thermal expansion, Poisson’s ratio, shear modulus, weight per unit volume and yield stress of the materials, respectively.
Ou: Arch bridge suspenders corrosion fatigue life assessment method and its application, in: Journal of Highway and Transportation Research and Development Vol. 8(22)(2005), p.106-109
Chen : The design and application of the composite bridges, Science Press(2002), Beijing, China
Online since: November 2013
Authors: Mukharbiy Banov, Andrey Shanyavskiy
Damage accumulation in materials before fracture surface creation has not the same acceleration that after crack occurring.
Within the material volumes ahead of a crack tip near specimen faces (macroscopic scale level of plastic deformation), and throughout crosspieces regions along the crack front (mesoscopic scale level) material’s compressive Yield stress exceeds.
References [1] Ivanova V.S.: Synergetics: Strength and Fracture of Metallic Materials.
Science Publ., 1998
[6] Shanyavskiy A.A., Burchenkova L.M.: Int Journal of Fatigue Vol. 50, (2013), p.47 [7] Shanyavskiy A.A., Banov M.: in: Proc.
Online since: September 2008
Authors: Ren Ke Kang, Zhu Ji Jin, Ze Wei Yuan, B.X. Dong
However, the relatively soft materials such as stainless steel, cast iron and nickel alloy widely used for polishing CVD diamond film are easy to wear and adhere to diamond film surface, which may further lead to low efficiency and poor polishing quality.
All materials used in this work were powders 99.9% in purity and -150µm in size.
The materials for grinding wheel fabricated by the combination of mechanical alloy and hot-press sintering (MA-HPS) may have high hardness.
Comparing two kinds of grinding wheels with SUS304, it is evident that two kinds of grinding wheels' materials have better high-temperature oxidation resistance than SUS304.
Acknowledgements The financial support for this research by the National Natural Science Foundation of China under grant No. 50575034 is greatly appreciated.
Online since: June 2019
Authors: David May, Sergiy Grishchuk, Bernd Wetzel, Peter Mitschang, Christian Goergen, Andreas Klingler
Materials and Methods In this study cut-off CF wastes are used (provided by ACE Advanced Composites Engineering GmbH) that are recycled mechanically.
Then, the resin-plate was placed on the NW-plate so that the materials were facing each other.
Leeke, “Current status of recycling of fibre reinforced polymers: Review of technologies, reuse and resulting properties,” Progress in Materials Science, vol. 72, pp. 61–99, 2015
Overcash, “Recycling of fiber-reinforced composites and direct structural composite recycling concept,” Journal of Composite Materials, vol. 48, no. 5, pp. 593–608, 2013
Nestler, “Development of Nonwoven Preforms Made of Pure Recycled Carbon Fibres (rCF) for Applications of Composite Materials,” KEM, vol. 742, pp. 555–561, 2017
Online since: November 2013
Authors: Gheorghe Ion Gheorghe, Liliana Laura Badita
Friction properties of this type of tribosystem depend on the properties of materials, the external environment and the nature of the wear particles generated during sliding [6, 7].
Since titanium nitrides (TiN) are hard biocompatible materials [8] with excellent resistance to abrasion, we used this material in order to achieve a nitrided layer on 316L stainless steel surfaces.
Ding, Surface modification of titanium, titanium alloys and related materials for biomedical applications, Materials Science and Engineering R 47 (2004) 49-121
Fischer, Subsurface microstructure of metal-on-metal hip joints and its relationship to wear particle generation, Journal of Biomedical Materials Research 72B (2004) 206–214
Tanno, A Azushima., Effect of counter materials on coefficients of friction of TiN coatings with preferred grain orientations, Wear 266 (2009) 1178– 1184.
Online since: September 2023
Authors: Miloud Hamadache, Adeline Gouillieux, Rose Marie Dheilly, Sihem Brahimi
Introduction Eco-mortar is an innovative solution for sustainable construction, using eco-friendly materials like recycled and natural ingredients.
This work deals with an experimental study, whose purpose is to substitute a quantity of cement by other quantities of natural pozzolanic materials.
As pinpointed, the pozzolanic materials are widely used as substitutes in the cement industries [3,4].
Algeria has a significant amount of pozzolanic materials of volcanic origin whose use remains at the level of a few cement plants only.
Lachemi, Efficiency of natural pozzolan and natural perlite in controlling the alkali-silica reaction of cementitious materials, Journal Homepage Case Studies in Construction Materials 17 (2022) e01246
Online since: January 2012
Authors: Liang Song Li, Jing Xie
Mairei Liangsong Li 1, 2 ,Jing Xie3,4 1 College of Forestry, Beijing Forestry University, Beijing, China 2 Beijing University of Chinese Medicine, Beijing, China 3College of Nature Conservation, Beijing Forestry University, Beijing, China 4 Department of Environmental Sciences, University of Toledo, Toledo, OH, USA abjlls66@sohu.com, bxiejingbj@126.com Keywords: Taxus chinensis var. maire; three-dimension green biomass; ecological benefit; assessment index; model Abstract.
Materials and Methods Research area was a 5 km2 region (27°35´35" N, 118°51´33" E).
For timber values, it was a valuable material for making furniture, carving crafts and processing health products.
Maire Industrial Development Strategies in Fujian, China,” Journal of Fujian Forestry Science and Technology, vol. 31(2), 2004, pp. 100-103
Maire,” Anhui Agricultural Science Bulletin, vol. 15(5), 2009, pp. 150-152.
Online since: November 2011
Authors: Liu Yun Hu, Xiong Fei Guo
The situation that the materials of PV industry in China depend on the overseas polysilicon supply and that PV market developed relies on overseas market seriously restricts the development of PV industry.
Polysilicon is the most importantly basis material in PV, its production and PV power installed which had tight correlation by calculation, it is important to develop polysilicon industry in order to support PV market in China.
[5] Long Guihua, Wu Bin, Han Song, Qiu Keqiang, “Development status and prospect of solar grade silicon production technology”, The Chinese Journal of Nonferrous Metals, Vol. 18 Special 1, Jun 2008, pp. 387-392
Science and Technology Review, 2006, 24(6), pp. 5-7.
Online since: May 2011
Authors: Yan Jiang Chen, Wei Ming Yan, Yong Li, Da Peng Gu
Journal of Structural Engineering,1997 ].
(1) Where x , y and z are the load position ; are the line load, concentrated force and concentrated moment; are the material bulk density , Poisson ratio , elasticity modulus; are the stress , strain , linear displacement and angular displacement; is the ratio of the model value and the measured value in the physical quantity . is the ratio of elasticity modulus in prototype and model.
In the process of the model design , the main arch rib is made by the expansion concrete mortar of the tube high-pressure injection, section type is shown in Figure 1; Stable arch was made by thin-walled steel tube ; Concrete girder and V-Bracket part was made by steel, the cross-section geometric form of the structure is also the box girder , maintaining the rigidity of the similarity between EA and EI [[] Li Zhigang: Research & Application of Building Materials,2007,6(in Chinese) ], the section of concrete girder is shown in Figure 2, the section of V-Bracket part is shown in Figure 3; The concrete base slab was simulated with steel box, the section type is shown in Figure 4.
Acknowledgements This work was financially supported by National Natural Science Foundation (50978009, 51008102) and Beijing Municipal Commission of Education Foundation (KZ200910005002) References
Online since: May 2011
Authors: Xiang Juan Qi, Ling Dong Sun
This paper studies on a new four column multi-effects distillation technology in the distillation process of edible alcohol production using cassava fermented liquor as raw material.
Overall Process Description Composition of the Raw Material Stream The raw material is a stream leaving the fermentation step of a conventional edible alcohol production fermented by cassava, it’s composition is listed in the Table1.
Liquor-making Science and Technology, 2009, 184(10): 43-47
AICHE Journal, 2008, 54(6): 1499-1525
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