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Online since: February 2019
Authors: R.S. Santos, A.G. Barbosa de Lima, Morgana Vasconcellos Araújo, W.R. Gomes dos Santos, R. Moura da Silva, J.B. Silva do Nascimento
A comparison between predicted and experimental data of the moisture content and temperature of the brick along the process was done and a good agreement was obtained.
In this sense, the use of Computational Fluid Dynamics (CFD) to simulate the drying process enables better process control, optimizing production with reduction of losses and cost, avoiding waste of raw materials.
In this work, it was used the experimental data from drying of industrial brick at 60oC [1].
T The initial conditions for the numerical simulation are adopted for the initial water mass in the greenhouse and in the brick, according to the following data: a) Initial water mass inside the kiln: 2.68886g; b) Initial water mass inside the brick: 386g; c) Air temperature inside the kiln: 60°C, and d) Initial temperature of the brick: 20.5°C.
It is noted that numerical result is in agreement with the experimental data, given reliability to the mathematical modeling.
Online since: July 2011
Authors: Bo Qi, Yan Chun Liu, Dian Wu Wang, Ji Jun Miao, Qiong Qiong Zhu
The temperature field contour curve were calculated for the column and beam, the law of deteriorated bearing capacity with time for the R.C. frame structure under elevated temperature were brought forward,which can adapt to R.C. frame structure with different damage index ω caused by earthquake.The relationship between ω and deteriorated bearing capacity for R.C. frame structure was also given, which was proved to be effective and correct according to comparison with the data recorded from the elevated temperature experiment designed by author.
The relationship between ω and deteriorated bearing capacity for the R.C. frame structure was also given according to the comparison with the data recorded from the elevated temperature experiment designed by author.
Fig.1 Summary of beam cracks Fig.2 Summary of column cracks Eight cracks were pre-settled symmetrically at the distance of 100 mm and 300mm to the end of the column while six cracks were pre-settled symmetrically at the distance of 200 mm, 1500mm and 1700mm to the end of the beam according to the statistical analysis data combined with the Fig.1, Fig.2.
The pre-settled crack depth was 20 mm and 40 mm respectively when the damage index ω defined as 0.2 mm and 0.4mm according to the statistic experimental data recorded from the low frequency reversal loading test.
Institute of Structure Engineering and Disaster Reduction at Tongji University, 1999, 9.
Online since: August 2012
Authors: S. Delijaicov, F.C. Cione, A.C. Souza, M.A. Colosio, J.L. Rossi
The mass of data generated makes it possible also the feedback of the same systems, increasing its database.
As show the data collected the behavior of stress changes with depth, geometry and range of analysis.
This effect of plasticity affects output data strongly and should be corrected.
The function of plasticity factor used with von Mises criteria in MathLab® procedure to rebuild data.
Data from HDrill was reworked to be self-consistent by plasticity factor [7].
Online since: October 2007
Authors: A. Irrera, G. Franzò, F. Iacona, F. Priolo, R. Lo Savio, M. Miritello, E. Pecora
These data are presented and discussed.
These data show that the Si excess has a very important role in determining the Er emission, both under direct and carrier-mediated excitation with an opposite behaviour in the two cases.
These data are summarized in Fig. 2a where the PL intensity at 1535 nm measured either by pumping with the 476.5 nm (carrier-mediated) or with the 980 nm (resonant) laser line is reported as a function of the total Si concentration.
These data are compared with the lifetime of the Si-nc luminescence measured at 700 nm in similar samples not implanted with Er (multiplied by a factor of 200 to allow the comparison).
This phenomenon presumably occurs through a reduction of the defect density of the material.
Online since: August 2013
Authors: Ying Han Wu, Min Lang Lin, Chich Tsung Lin
The test data are helpful to analyze the behavior and modify the design criteria for the RC member retrofitted by the CFRP anchor technique.
Following the ACI440.2R [6], the general U-wraps or two-sided wraps do not enclose the entirely section, therefore, the effective strain level should be concerned as (5) Where, is the bond-reduction coefficient varying with the concrete strength, wrapping types and the CFRP stiffness [6]; is the ultimate strain of CFRP.
An elastic bond stress approaching ignored the resistance provided by the concrete cone is also determined with R squared 0.725 to the test datas, as shown in Fig. 6(b).
Therefore, the shear strength of the epoxy resin with an appropriate reduction factor [0.6τ] is proposed for the design bond strength.
Online since: February 2013
Authors: Zi Jing Zhong, Run Lan Tian, Yang Liu
In the logistical materials inserted RFID chips and realize effective data reading and transmission is the army logistics visualization key link.
Transport supplies state information, take these messages back to the monitoring and data storage center through mobile communication network.
Mobile terminal receive satellite positioning data, then automatically calculate the place of their geographical coordinates, and the calculated out of the coordinates data together with sensing information from the control unit to deal with digital mobile communications network, and through the network to send data to command and control center, after decoding process, take the receiving coordinate data and other data reduction, match the Google Earth electronic map, and in the electronic map direct-viewing showing real-time coordinates of military material accurate position, the user can receive and inquire the vehicles information in the Internet by oneself, in the electronic map can clear and direct command of the vehicle dynamic information (position, condition, speed, etc.).
When GPS receiver, namely the car terminal receive GPS positioning satellite data automatically calculate the place of their geographical coordinates, the GPS transmission equipment will calculate coordinates data, control unit use these data together with sensing information, then send those information to military GSM digital mobile communication network through GSM communication machine, and through the network to send the data to distribution center, after decoding process, and then restore the coordinate data and other data, and match to the electronic map, and in the electronic map can direct-viewing show real-time coordinates of material precise location.
RFID module realizes real-time, dynamic data exchange and information through the Web service and management system.
Online since: December 2014
Authors: Wei Xu, Dan Li
AM2303 measure again environment temperature and humidity, and record data.
The Shock Burst function of nRF905 can easily achieve high data rate, without the need of a expensive high-speed microprocessor to process data and deal with clock recovery.
Transmitting or receiving data is stored in EEPROM of Mifare One tag.
Each sector’s block 0, block 1, block 2 can be used to store data.
Data blocks can be used for two fields: one field is general data, which you can carry out read and write operations; another field is data value, which you can initialize values, add value, read value operations.
Online since: September 2017
Authors: Kee Nam Song
Alloy800HT weld strip and measured data.
SUS316L weld strip and measured data.
Alloy617 weld strip and measured data.
Analysis of measured data.
Using the measured data, representative values of the mechanical properties in a weld including HAZ were suggested through a statistical approach for later using the input data of the structural analysis of the welded heat exchanger structures.
Online since: December 2012
Authors: Yan Ping Feng, Li Bing Yang, Yan Hong Chen, Wei Guo Li, Ya Li Liu
ADS40 for digital mine construction to provide mine and coal area topography, industrial square planar graph, digital image map spatial data, and provide basic data for mine construction[4].
In the application of the updated land utilization survey Using ADS40 digital sensor to acquire digital aerial image, using digital photogrammetry method production is digital orthophoto image, and as the data source for the investigation of land renewal, can solve the past land use change survey, backward technology, low precision, maps, map data, field inconsistency problem, meet the new period land management and the needs of economic construction.
Aerial photography sensor development trend With the progress of science and technology, aviation digital camera, laser radar sensor data acquisition ability and application domain expands unceasingly, multiple sensor integration and data fusion, the gradual reduction of ground control dependence, digital photogrammetry after treatment gradually realizes full automation, geographic information fast acquisition and update will become photography measurements of the important trends of the development of disciplines[5].
Using a variety of sensors for observation at the same time Using multi-sensor integrated effectively were observed, which can effectively improve the precision and reliability of measurement result, and has been widely applied in photogrammetric data acquisition.
But at present many sensor integrated potential is far from being mining, data integration algorithm multiple sensor integration technology will be the key[7].
Online since: April 2011
Authors: Jia Yuan Luo, Rong Fan, Cheng Xiang Shi
States and process history of the stress and the strain in each phase during the quench are obtained, which provides ponderable data and theoretical value for a fully understanding of the aluminum alloy quenching. 1.
Experimental data of material properties is from some related literature, the elasticity modulus, thermal conductivity, specific heat and the heat exchange coefficient are from literature [6].The “flow stress” feature of aluminum alloy in high temperature, which is different in different deformation temperature, strain and different strain rate.
A new flow strain feature of 7075 aluminum alloy with piecewise method is proposed in simulation based on the experimental data of reference literature [5]. 2.2 The set up of finite element model ABAQUS software is used here to do the simulation.
These studies provide ponderable data and theoretical value for fully understanding of quenching process of aluminum alloy, which offers great value for making a better process technology to control the residual stress.
[6] Muammer Koc,John Culp,Taylan Altan.Prediction of residual stresses in quenched aluminum blocks and their reduction through cold working processes[J].Journal of materials Processing Technology,174:342-354(2006)
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