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Online since: March 2017
Authors: Yun Xin Wu, Hai Gong, Yang Li, Feng Xiao
The error data of the component contour deformation were processed and the component deformation contour was fitted, which makes the test result of the contour method and FE simulation result have good consistency.
In this work, the error data caused by datum inconsistencies and variation of the thickness of the component were analyzed, the cubic spline interpolation was adopted for deformation contour of component, which makes the test result of contour method for quenching residual stress of 7050 aluminum alloy typical component more accurate.
Proposing a method of averaging and smooth surface fitting to the original deformation contour data of two cut surface of cross-shaped component to eliminate the measurement error and machining error.
(a) Measured contour datum of the cutting plane (b) Smoothed surface after data processing Fig. 5.
Data processing A FE model of one-half component was built to calculate the residual stresses normal to the cutting surface using linear elastic analysis.
Online since: July 2014
Authors: T. Micha Premkumar, M.A. Ashish, T. Banu Prakash, D. Thulasiram
The main aim of this investigation is to predict complex flow mechanism like separation and recirculation around the turbine blades and subsequently reduction in torque coefficient at higher flow rate.
Further, Torresi et al. [5] evaluate the tip clearance effects and secondary flow losses in Wells turbuine that contribute major effect to reduction of the peak load efficiency.
The validation of numberical simulation has been done by comparing the experimental data[10] and numberical result of torque coefficient T* for particular flow coefficient U* of 0.22 as shown in Table 1.
The grid sensitivity study has been done along with comparison to the experimantal available data, with this confident CFD simulation has been proceded with our geomentry.
Further, its has favourable effect on its increasing in turbine performance by reduction in pressure drop.
Online since: May 2012
Authors: Zheng Wen Huang, Ao Yuan, Chun Wu
Finally, put forward some suggestions to provide a reference for the reduction, recycle and safe treatment of MSW in Nanchong City.
By analyzing the historical data, the population in main urban areas increased gradually, there was a linear relationship between the population and the time (year).
Based on the analysis on the data over the years in Nanchong city, it found that the per capita consumption expenditure was significant positive correlated with the time(year).
However, the output of MSW was also influenced by personal qualities, environmental awareness, waste reduction measures and management system and other factors. 
The government should improve the public awareness of environmental protection, strengthen waste reduction, resource and market-orientation operation, to reduce the output of MSW through some appropriate approaches, such as the garbage classification, levying waste disposal fees. 
Online since: May 2015
Authors: Hsiu Chen Tang, Tzu Hsia Chen
Gear Reducer Consider the cost of production, straight spur gear pair having reduction ratio 5.2667 is proposed to be the example for analyzing its corresponding meshing efficiency.
Fig. 1 shows its corresponding kinematic skeleton, the teeth number of gear 2 is 15 (Z2=15) and the teeth number of gear 3 is 79 (Z3=79) and its reduction ratio is 5.2667.
Table 1 shows its corresponding gear data.
Fig. 1 Spur Gear pair Table 1 Gear data of the straight spur gear pair (15, 79) Pinion 2 Gear 3 Teeth No. 15 79 Normal Module (mm) 1.25 1.25 Shift coefficient (mm) 0.75 0.00 Operation Pitch Dia.
Fig. 3 The average friction coefficients Meshing Efficiencies For the Straight spur gear data shown in Table 1, the angle of approach βa1=0.10638 rad and angle of recess βr1=0.43376 rad.
Online since: June 2008
Authors: Ajit D. Kelkar, Ram Mohan, Ronnie Bolick, Sachin Shendokar
Traditional methods such as stitching and Zpinning, while improving interlaminar properties in woven composites, lead to a reduction of the inplane properties.
Splaying is not dominant in reduction of diameter of nano fibers.
Table 1 shows the data obtained from the current MSBS and SBS tests.
The experimental test data indicates over 20% improvement in shear strength in the electrospun layered hybrid composites compared to the conventional two-phase composites.
Concluding Remarks The MSBS and SBS epxperimental data obtained indicates over 20% improvement in the delamination resistence of the nanoengineered hybrid composite with electrospun nano fiber layers compared to the traditional two-phase composite.
Online since: August 2016
Authors: Song Tao Xue, He Sheng Tang, Wei Chen, Da Wei Li, Jia He Mei
Case Study Experiment Data Processing.
The data in Table1 are sorted out, the uncertain interval of two uncertain constants are determined.
The distribution histogram of the data collected and the corresponding BBA values, as shown in Fig. 3.
And precise probability distribution is based on large quantities of experimental data.
The evidence theory method expresses the uncertainty based on the parameters obtained from the experimental data.
Online since: January 2016
Authors: Andreas Menne, Ralf Struzyna, Jens Steinmill
Since topics like the greenhouse effect and the associated global warming issue are much more discussed in the past, automobile manufacturers have to become even more active in in two fields: reduction of fuel consumption and reduction of emissions.
Introduction Automobile manufacturers focus instantly on CO2 emission reduction concepts to comply with federal emissions standards.
The data can be exported as Excel-file for further review and evaluation.
A heavy-duty diesel engine provided data for simulation.
Online since: October 2011
Authors: Xiao Chun Liu, Gang Chen
For China's traditional residential design and construction method formed as a linear process and single data feedback as well as great loss of information in design, the residential quality and properties have not only been unimproved, but have also led to relatively more time and costs spent.
The statistical data shows that the average service life of Chinese urban residence is only 30 years around.
In general, In order to answer global climate change, Chinese government institutes an emission-reduction target that CO2 in 2020 GDP is lowered by 40 to 45% than that of 2005.
It aims at studying and summarizing various information and data of the residence design; according to the design target, a creative design concept is put forward and visualized.
References [1] Data source: Speech by Vice Minister of Construction Bureau in 2006 Housing Expo [2] Data source: Statistic data of construction department [3] Data source: Speech by Vice Minister of Construction Bureau in 2010 Real Estate Science Development Forum [4] Lanping Zhen: Study on Design Method of Whole Life Cycle for Energy-saving Buildings.
Online since: August 2013
Authors: Jin Yun Guo, Li Tao Han, Qiao Li Kong
Therefore, DORIS can be used to precisely track LEO and collect abundant tracking data.
According to the equation of satellite motion and a variety of dynamic models acting on the satellite, the real-time orbit of the satellite can be estimated using the tracked data.
The observation noise is 0.3mm/s when we simulate DORIS tracking data for HY-2 satellite.
There are only 14 ground beacons in scheme 1, therefore the data coverage is very low, and the accuracy of orbit determination is low compared with other schemes.
In scheme 2, the data coverage is improved in some degree, and the accuracies are improved by -0.2mm, -1.3mm and 0.7mm on R, T and N directions respectively compared with scheme 1.
Online since: January 2012
Authors: Yang Han, Jiao Li, Xu Han
Study Method Data source of the article mainly includes: (1) TM satellite image data of Xinjiang area of late 1980s and late 1990s and image data in 2005 from Sino-Pakistan Earth Resources Satellite 02 (SBERS-02) and with method of false color composite of R4, G3, B2, (2) vectored Xinjiang soil map (1:500000), map of depth of burial of underground water of Xinjiang (1:500000) and salinity map of underground water (1:500000) in 1980s. (3) Database of Xinjiang environmental background based on macro remote sensing research, including Xinjiang weather data layer (1:500000 temperature and humidity), 1:500000 texture map of earth’s surface (psephitic texture, sandiness, loamy texture, viscidity and rock), chorography and topographic map and so on.
We acquired Landsat TM Satellite image data in 1989 and 1999 and the CCD Camera Data of China-Brazil Earth Resources Satellite 02 (CBERS-02). in 2005.
Specifically, such data as concerning the soil type, roads, lakes, vegetation distribution and water system etc. are superposed on the satellite pictures, which can be made by using the professional software ArcGis9.0, which allows vector superposing, after that, the accuracy of the information concerning the categories of some sampled wetlands stemmed from the interpretation was testified by observing the field sampling point through GPS, the accuracy reached over 90%, in addition, acquisition of land use spatial information, edit of spatial data and establishment of topological relation, formed the land use type database of the 3 periods in 1989, 1999 and 2005 in Altay region..
Reduction of water space relatively fewer, mainly turned to grasslands and swamp.
However, change occurred in latter 5 years are not so huge as of previous 10 years, general trends is reduction, mainly between swamp and water space
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