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Material properties of cable member: elastic modulus is 1.85×105MPa, density is 7.85×103kg/m3, tensile strength is 1860MPa, where design value may takes 40%, 744MPa.
Material properties of strut element: elastic modulus is 2.06×105MPa, density is 7.85×103kg/m3, yield strength is 235MPa.
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For this purpose, the impact of structure on the strength is approached from basic deformation of material.
The compressive strength of concrete layer of the material itself and compressed area, as shown by the equation: (1) It is clear that the reduction ratio of compressive strength of the entire concrete is dependent on the ratio of the ratio of the area of this structure over the original structure, i.e.: (2) In case of structure of five Φ10 root system lead holes and exchange holes per square meter, the reduction ratio of strength calculated with the above equation is about 4%.The relationship between reduction ratio of strength and quantities of exchange holes is shown in Fig.2.In case of five holes, the impact of bore diameter on reduction ratio of strength is shown in Fig. 3.
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Δn is an important parameter in liquid crystal material.
The size of the pitch can be controlled by adding a chiral material, such as the CB15.
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Analysis on Crack Propagation Mechanism of Single Crystal Copper by FEAt Method Ge Li, Qinglong Zhang, Ming Chen, Linyong Zhou Inner Mongolia University of Science and Technology, Baotou, 014010, China ligeab@imust.cn Key words: Single crystal copper, Crack propagation mechanism, FEAt method Abstract.
Introduction The fracture process of metal material was a typical multi-scale phenomenon which throughout the macro, meso, micro-scale [1].
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Volume reduction caused by water evaporation, hydration, temperature decreases and other factors in the base of stable inorganic binder material is called shrink of stable inorganic binder material base.
Capillary action , adsorption , the role of intermolecular forces , the role of water and Carbonation contraction of mineral crystal material between layers or gel will cause volume shrinkage of stable inorganic binder material.
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Experimental The experimental materials and sample preparation.The experimental materials were stainless steel 304 (0Cr18Ni9) with thickness of 2mm.
Impedance of base material hit maximum, 36.175 Ω/cm2, and the minimum is B1R, 12.531 Ω /cm2.
This shows that after 3 months corrosion in seawater , the base material’s corrosion resistance is better than that of A2R, followed by A1R, B2R, B1R.
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At the same time, the SAED diagram shows the sample has a dispersion ring which is a significant characteristic of amorphous materials.
Acknowledgment We gratefully acknowledge the financial supports of National Natural Science Foundation of China(20563001) and Guangxi Science Research and Technology Developing Foundation(073101,05112001-2A1,0842003-12) References [1] Hong K.
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Experimental Materials The ore of ludwigite was used as raw material in the experiment, crushed and ground under 75μm by vibrating-sampling machine.
Fig.5 SEM micrographs of powders ruduction at 1470ºC for 8h Conclusions Using ludwigite crude ore as materials, phase transformation and mass loss rate of ludwigite was analysed in carbothermal reduction-nitridation process.
Acknowledgement This work was financially supported by National Natural Science Foundation of China (50904022) and Natural Science Foundation of Hebei Province(E2011209010).
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