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Online since: January 2012
Authors: Qi Huang, Jian Bo Yi
Figure 1.
identification results of LFOs from RTDS mode Identification parameters frequency amplitude attenuation factor damping Leading time 1 0.78 316.2 -0.91 0.16 0-1.5 2 0.82 164.5 -0.63 0.11 1.5-5 3 0.52 48.3 -0.22 0.065 0-5 Conclusions The problem of LFOs parameters identification in power system with the method of improved HHT is studied in a detailed.
References [1] M.
Huang, “Ensemble empirical mode decomposition: A noise-assisted data analysis method,” Advances in Adaptive Data Analysis, vol. 1, no. 1, pp. 1–41, 2009
Hayes-Gill, “Application of empirical mode decomposition to heart rate variability analysis,” Med.Biol.Eng.Comput., vol. 39, no. 4, pp. 471–479, 2001
Online since: December 2019
Authors: Yu Chih Tzeng, Chih Ting Wu
A V-shaped groove 3 mm in width and 1.5 mm deep was machined by wire electrical discharge machining, as shown in Fig. 1.
Table 1 shows the chemical compositions of the Inconel filler metal 625 and IN-713LC nickel-based superalloys.
The following conclusions are drawn from the experimental results: 1.
References [1] M.J.
A 479 (2008) 269-276
Online since: January 2016
Authors: Jaroslav Juračka, Tomáš Katrňák
The utilized methods are based on the state-of-the art methods, see [1, 2].
The main research was focused on the integral lower wing panel, presented in Fig. 1.
These criteria were essential parameters of the optimization procedure: The criterion comparing absolute values of two consecutive values of the objective function: CONV2=FXk-FXk-1=1∙10-20 (1) The criterion of relative difference of objective function: CONV1=FXk-FXk-1FXk-1=0,001 (2) These conditions controlled the step length of gradient in the design space. 5.
References [1] G.Y.A.
Zhou, Two-dimensional structural topology optimization based on isogeometric analysis, Applied Mechanics and Materials, 472 (2014) 475- 479
Online since: December 2013
Authors: Zhu Yu Su
Disc brake has more advantages than drum brake, disc brakes are applied more widely [1].
Fig.1 Curve of 60 pairs Fig.2 Five times fitting curve Prove the Characteristics of Friction Factor-Temperature.
Fig.7 Two kinds of sample Fig.8 Torque curve of sample 1 Fig.9 Torque curve of sample 2 Table 3 Test Conditions Disc rotate(r·min-1) Contact area(cm2) Pressure on contact(MPa) Diameter of Table(mm) 1000 10.5 0.8 110 Comparison and analysis of test results.
References [1] Jiarui Chen: Automobile Structure (China Machine Press,China 2005),p.282-371
[5] QC /T 479—1999.
Online since: November 2013
Authors: Qi Lin Huang, Xun Cai, En Ya Shen
Weinkauf et al[1] proposes a glyph representation for high-order vector singular points.
This is done by having two methods, one with order p and one with order p-1.
We give each ball a number from 1 to N.
With an interval n drawing a glyph, they are numbered 0, 1, 2, ..., N, until the end of the streamline .
IEEE, 2005: 479-486
Online since: July 2012
Authors: Wei Cai, Ai Lian Liu, Jia Wen Xu, Bing Yu Qian
Results and discussion Fig. 1 shows the optical microstructure of Ti-Ni-La alloys.
It is well known to us that Near-equatomic Ti-Ni alloy exhibits single solution as shown in Fig 1 a).
In Table 1, the Ni:La ratio is about 1 in Ti-Ni-La alloy.
References [1] K H Echelmeyer.
Forum. 475-479 (2005) 1949-1952 [7] F S Liu, Z Ding, Y Li, H B Xu.
Online since: September 2013
Authors: Yan Tao Wang, Yan Gang Wei, Hai Tao Li
Crowned Profile Design of Roller Bearings Used in Rolling Mill Based on Three Dimension FEA Yangang WEI 1, a, Haitao Li 1, b and Yantao WANG 2, c 1 School of Mechanical Engineering, Dalian Jiaotong University, Dalian 116028, China 2Wafangdian Yiekuang Bearing Manufacturing Limited Company, Wafangdian 116300, China aweiyg@djtu.edu.cn bhljhslht@163.com   cwangyt@ywygs.com Keywords: Rolling mill, Cylindrical roller bearings, Crowned profile design, FEA Abstract.
Hence, a lot of research works have been done to enhance life of the roller bearings [1~5].
The meshes of FEA are shown in Fig.1.
Reference [1] R.L.Ebaugh, Chock and roll maintenance and its effect on work roll bearings.Iron and Steel Engineer, 11(1978)64~68
Advanced Materials Research 479-481 (2012) 1759-1762.
Online since: September 2014
Authors: Francesco Gagliardi, Teresa Citrea, Matthias Haase, A. Erman Tekkaya, Nooman Ben Khalifa, Martin Schwane
The main geometrical parameters are summarized in Table 1.
Table 1: The main geometrical parameters of the investigated geometry.
Figure 1: Model and boundary conditions utilized for the Eulerian simulation in Deform 3D.
References [1] Valberg H., 2002.
Andreoli, Seam welds quality in AA6060 alloy, in: Proceedings of the ninth International Aluminum Extrusion Technology Seminar, WAUCONDA, ILLINOIS, USA, Extrusion Technology Foundation, 2008, pp. 479 – 488
Online since: May 2006
Authors: José Maria F. Ferreira, Susana M.H. Olhero, A. Patrícia Tavares
These two additives have been proved suitable for this purpose, according to some literature reports [1-2, 8-9].
Figure 1 presents the XRD spectra of the alumina powder produced by combustion synthesis.
Figure 1.
References [1] Giuliano Tarì, "Advances in colloidal processing of alumina", PhD Thesis, University of Aveiro, 1999
Soc., [18] (1998) 479-486
Online since: June 2012
Authors: Yu Liang, Zhong Yuan Sun, Ling Feng Yu, Zhi Yi Shi
The main specific component of industrial 7075 aluminum alloy is shown in Table 1.
At this time, the graphite electrodes (10mm diameter) could be also immersed in the molten Al-alloy and then switched on electric pulse current, as shown in Fig.1.
Fig.1 The schematic of experiment equipment 1-Electrode 2-Liquid aluminum alloy 3-Crucible platform 4-Resistance furnace The microstructures were observed by optical microscope (OLYMPUS-PMG3) after polishing and eroding the samples cutting from the cross section of aluminum ingots (eroded with a mixed acid solution, i.e.
HNO3: HCl: HF: H2O=2.5:1.5:1.0:95.0 [1]), and the main component was measured by surface scan using KYKY-2008B scanning electron microscopy (SEM) with energy dispersive spectrum (EDS).
(In Chinese) [6] Lei Pang, Xingguo Zhang etal: Special Casting & Nonferrous Alloys, Vol.27 (2007), pp.479-481.
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