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Online since: October 2018
Authors: A.A. Korolev, A.F. Balaev, Albert Viktorovich Korolev
Therefore, during the time t there will happen i=f•t number of loading cycles of the plate.
It is also inversely proportional to the saturation energy of the plate material at which plastic strain along the grain boundaries covers the entire volume of the material.
Online since: June 2008
Authors: Reinhard Pippan, Richard Stock, Anton Hohenwarter
In the last decades a variety of studies have shown that severe plastic deformation (SPD) is capable of producing materials with remarkable physical and mechanical properties due to a strong grain refinement [3,4].
(1) Here r is the radius, tm is the average thickness calculated of the thicknesses before and after deformation and n is the number of rotations.
Online since: August 2019
Authors: Ivo Kusák, Pavel Rovnaník, Patrik Bayer, Cecílie Mizerová
Quartz sand with a maximum grain size of 2.5 mm was used as aggregate.
SEM images of REF, CNT 0.10 and CNT 0.20 geopolymers Conclusions CNTs are widely used in a number of advanced applications, mainly due to their exceptional mechanical properties.
Online since: November 2024
Authors: Fahad Ullah Zafar, Muhammad Asif, Rizwan Mehmood Gul, Muhammad Ali Kamran
Introduction Performance and durability of solar panels is compromised by a number of factors, the formation of cracks being one of them.
Additionally, extrinsic flaws (cracks, broken contacts, and Transparent Conductive Oxides (TCO) corrosion for thin films) as well as internal defects (grain boundaries, dislocations, shunts, or process faults) may be visually detected using EL pictures.
Online since: April 2010
Authors: Zhong Min Zhao, Long Zhang, Chuan Zeng Pan, Zhen Sheng Qu, Quan Yang, Min Quan Wang
Recently, directional solidification technique has been proven to be an advanced method for successfully preparing the oxide/oxide in-situ composites with the eutectic structures of the outstanding performances and the absence of grain boundaries, however, the fracture toughness of the eutectics generally measured 4.0-5.0 MPa·m1/2 [2, 3], and the maximum value measured to be 8.0 MPa·m1/2 [4].
Meanwhile, EDS images showed there distributed a large number of Si and O elements as well as a few of Cr and Al elements in inter-colony regions, so it is considered that SiO2 component participated in forming the glass phase and was distributed at eutectic boundaries.
Online since: June 2012
Authors: Da Feng Gao, Peng Fei Li, Lei Wang
Table 2 Wood material attributes Elastic Modulus(MP) Poisson's Ratio Shear Modulus(MP) Longitudinal Radial, tangential Arrange grain shear, radial cross-section String section, Radial section Tangential, longitudinal Longitudinal, radial Radial, tangential 9702 1955 0.106 0.352 0.520 609 971 218 Model 2: corresponding reinforced concrete structure finite element of model The coordinate value of model 2 exactly the same with that of model 1.
(a)time-acceleration interval curve of model 1 (b)time-acceleration interval curve of model 2 (Taft wave 70Gal) (Taft wave 70Gal) (c)time-acceleration interval curve of model 1 (d)time-acceleration interval curve of model 2 (El-Centro wave 220Gal) (El-Centro wave 220Gal) (e)time-acceleration interval curve of model (f)time-acceleration interval curve of model 2 (Lanzhou artificial wave 400Gal) (Lanzhou artificial wave 400Gal) Fig.5 Time-acceleration interval curve Table 4 Peak acceleration and Peak displacement position Node number Displacement(cm) Acceleration(Gal) Model 1 Model 2 Model 1 Model 2 Model 1 Magnification factor Model 2 Magnification factor Taft(70Gal) Column feet 1053 1017 0.426 ─— 58.03 0.829 ─— ─— Column top 1092 1056 2.475 0.867 39.08 0.656 467.8 6.683 roof 8055 7771 2.544 0.971 34.51 0.909 529.6 1.132 El-Centro(220Gal) Column feet 1053 1017 1.381 ─— 200.6 0.912 ─— ─—
Online since: July 2011
Authors: Shuai Wang, Fang Du, Yun Fei Cui, Xin Ming Li
For large-scale, complex storage, computing and software processing environment in the cloud systems, customers don't need to know their specific number, arrangement and structure, only need to see a single interface by which they can process all the request service.
The customers can be divided into three categories in accordance with the coarse-grained: individual customers, corporate customers and research institutions customers. 3) Operability.
Online since: June 2012
Authors: Shuang Li Long, Hong Nie, Xin Xu
It visibly displays the capability of the simulations to resolve fine-grained turbulence and exhibits the complex although in general.
Considering the small block number compared with the experiment, there is difference for lower frequencies (f<10000Hz, St<4.5).
Online since: May 2014
Authors: Thidarat Cotanont, Chalong Buaphan, Kamonporn Kromkhun
While well pumping tests are widely used to estimate K values, many limitations such as limited number of wells, and cost of conducting a pumping test can affect the quality of representative K values determined for an aquifer.
The Formation is a lower Cretaceous of the Khorat group which is composed of medium to coarse-grained sandstone, conglomeratic sandstone and conglomerate.
The K value of a fractured aquifer is normally and spatially a random number.
The empirical probability [6], Fs, was calculated by Fs = m/(n+1), m is rank of data, and n is number of data.
Online since: July 2014
Authors: Veluswamy Muthuraman, Raju Ramakrishnan, G. Siddarth, V. Nikilesh, V. Rangaraja
Literature survey highlights the selection of proper optimal parameter for obtaining higher material removal rate and lower surface roughness in WEDM due to the large number of process variables. 3.0 Material and Methods Tungsten Carbide composite with cobalt binder (WC-20%Co) was selected as work material.
Composition and Properties of WC-20%Co Av.grain Size (µ) Density (g/c.c) Young’s modulus (GPa) Hardness (H R.A) Thermal expansion (K-¹) 0.9 13.55 490 85.5 6.4 x 10-6 Table 2.
For the HB and LB, the definitions of the loss function (L) for machining performance results (MRR, surface roughness) of n repeated number are, Where YMRR and YSF are the response for material removal rate and surface finish respectively and n denotes the number of experiments.
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