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Online since: December 2006
Authors: Sang Jai Kim, Ill Seok Jeong, Taek Ho Song, Sung Yull Hong
Some fatigue data to date have shown not to be marginal enough for environmental fatigue [2-4].
Fatigue life was counted at the cycle numbers which were 25% load reduction from the first tension load [9].
Fatigue life of the solid data corrected for strain hardening by FEM (FEMafter in plot) are shown shorter than those of test data (FEMbefore).
KEPRI data produced by the domestic test rig have same trend with Japanese fatigue life data but longer fatigue life than Japanese.
But KEPRI data show so close to the solid triangle data of same material and test condition (CF8M unaged, 0.04 %/s, Japan).
Online since: June 2014
Authors: Nor Mariah Adam, Qi Jie Kwong, Mohamad Afri Arsad
Based on the data collected from the field assessment, the thermal comforts indices with expectancy factor were calculated.
Therefore, the radiant cooling technology was introduced and it was found that this type of cooling technology was effective in reduction of the air conditioners’ operating cost [3-4].
The field measurements and data collection were conducted for a period of five days (15/10/2012 – 19/10/2012) at level 2 - level 6 of the building, where the thermal environment for these five floors was measured.
The thermal comfort parameters in the building were recorded by using a thermal data-logger.
Measurements were taken in every 5-minute interval, and all the measured field data was transferred to the portable computer in daily basis for further analysis.
Online since: February 2011
Authors: Yi Sheng Zhang, De Qun Li, Chao Zheng
This paper started with analyzing the performance data of the plastic sheet molding material, using nonlinear finite element method and multi-physics coupling method to simulate the plastic sheet forming process, and the result gives the required parameters for product design and quality control.
And mechanical property constant C10, C01 is determined by the experiment, which is obtained by multiple testing and data fitting. 2) The geometric model and mesh configuration Simulation studies were focused on the common forming characteristics, such as cup drawing parts of different drawing ratio.
Based on the data obtained by photographic surveying the formed specimen with deformed grids, the ASAME grid Strain Measurement System gives the thickness distribution of specimen cup blow, as is shown in Figure 5 and then the thickness distribution of specimen cup blow can be obtained by data procession through ASAME grid Strain Measurement System, as is shown in Figure 6.
Reference: [1] Adolf Illig and Peter Schwarzmann, in: Thermoforming: A Practical Guide, Chemical Industry Press (2007), p.14 [2] A.Attar, N.Bhuiyan and Vince Thomson: Manufacturing in blow molding: Time reduction and part quality improvement, Journal of Materials Processing Technology (2008), Vol. 204, p.284-298 [3] WANG Wen-bo and PIAN Xiao-peng: Seal Design of Box Edges Based on Nonlinear FEA, Mechanical Engineer (2009) Vol. 10, p.104-106 [4] LAI Jia-mei, LIU He-sheng, HUANG Han-xiong and BAO Zhong-xu: 3D Numerical Simulation of Parison Inflation in Extrusion Blow Molding, China Plastics (2004), Vol. 18, p.85-87 [5] LV Xiao-dong and WAN Min: Application research on microscope strain testing system of sheet metal, Forging & Stamping Technology(2007), Vol 8, p.101-104
Online since: November 2015
Authors: Bianca Bontiu POP, Mircea Lobonţiu
In previous researches [1] I have investigated the feed rate influence on surface roughness and manufacturing time reduction.
The final results will be used as data for future research.
As to the productivity related to surface roughness, according to obtained data from the experiment, we found that the best ratio of these two factors is to the cutting regime: cutting speed at 530 m/min, feed per tooth at 0.14 mm/tooth and cutting depth at 4 mm, resulting a surface roughness of 0.212 μm.
Online since: July 2011
Authors: Qing Fen Li, Ping Long, Yong Lei Xin, Li Li Xue, Li Kun Xu
These data show that Ti/(Ru,Ir,La)Ox oxide electrode exhibits considerably high voltammetric charges, apparent current density and low onset potential for the ClER and OER.
It can be seen that crystalline diffractional peaks is identified according to the powder diffraction data contained in the JCPDS.
Hou et al. observed that the introduction of small amounts of La into supported Ni-B amorphous alloy produced by the chemical reduction method resulted in a higher crystallization temperature[10].
The XRD data reveals that the electrode exists in the major formation of amorphous phase as a consequence of the addition of La into Ti/(Ru,Ir)Ox oxide electrode The amorphous phase is believed to play an important role in improving apparent electrocatalytic activity.
Online since: September 2011
Authors: Ya Bin Tian, Xue Yi Qi, Jia Xin Hu
The Appropriate selection of the element type will reduce the amount of input data and computation time.
It has played the vital role on enhancing the improvement design of pump's structure dynamic performance,noise reduction and so on [9].
Fig. 1 Entity unit modeling Fig. 2 Entity unit modeling Fig. 3 Entity unit modeling of first-order vibration of second-order vibration of third-order vibration Fig. 4 Beam unit modeling Fig. 5 Beam unit modeling Fig. 6 Beam unit modeling of first-order vibration of second-order vibration of third -order vibration Data Analysis.
The reasonable choice of unit type may reduce the quantity of input data and the time of computing
Online since: May 2010
Authors: J. Eiken
For this purpose, a phase-field model has been extended to allow for complex 3D anisotropic interfacial energies and interfacial mobilities, calibrated by data from molecular dynamics studies.
The anisotropy coefficients are calibrated with data from molecular dynamics studies on pure Mg recently published by Xia et al
For the assumed anisotropy functions, based on molecular dynamics data for pure magnesium, dendrite arms are found to evolve only in <1120> orientations.
For the assumed anisotropy functions, based on molecular dynamics data for pure magnesium, dendrite arms are found to evolve only in <1120> orientations.
Figure 4: Simulations for two different process velocities in comparison with experimental data by Mirkovic [9].
Online since: March 2014
Authors: Tomáš Podrábský, Karel Obrtlík, Ladislav Čelko, Simona Hutařová, Martin Juliš, Ivo Šulák
Hardening/softening curves, cyclic stress-strain curve and fatigue life data of coated and uncoated material were obtained.
Experimental data were approximated by the power law log σa = log K´ + n´ log εap
was used to fit experimental data.
The Coffin-Manson law log 2Nf = (1/c) log εap - (1/c) log (3) was fitted to experimental data and material parameters were evaluated using non-linear regression analysis.
Fig. 6 shows that experimental data of both materials are close to each other.
Online since: April 2015
Authors: Siti Syamsiah, Hary Sulistyo, Muslikhin Hidayat, Eka Sari
Experimental data are used to formulate multisubstrate degradation and fungal growth influenced by the IMC.
TKN conversion into a dry weight of fungus follow equation conducted by Shi et al (2012) [6], but based on a preliminary data from pure Phanerochaete chrysosporium in this research that a linear correlation existed between fungal biomass and presence of TKN with a conversion coefficients (kT) of 10.8 g fungal biomass.g TKN-1.
The results of the evaluation of the application of the effects of IMC model to data of research by Wan et al (2011) can be seen in Figure 3.
Results of Curve Fitting Application of Moisture Content Model for Research Wan et al. 2011 Implementation of the experimental data of Wan et al. 2011 on the effects of IMC model gives Sum of Square Error (SSE) results of 0.000507, the relative error below 5% and R square above 0.8.
Curve Fitting Results of experimental data of Wan et al.2011, using IMC effects models result in some constants.
Online since: November 2015
Authors: Luis Salcedo-Mejía, Luis Ramírez-Osco, Hans Cayo-Gonzales, Vladimir Arias-Arce
With these data, we observed that the addition of iron is not necessary in a stage adaptation when the mineral contain iron.
Increased oxidation-reduction potential after the first 5 days was observed, tests with 0 and 3 g/L Fe2+ were first to give change (360 mV – 570 mV).
Showing 17351 to 17360 of 40609 items