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Online since: August 2015
Authors: Kunagorn Kunavut
Introduction In offshore area, communication channels are necessary for exchanging data between various terminals and Base Station (BS) which behaves as the gateway to connect them to the organization computing resources (e.g. data storage and servers).
For example, the petroleum exploration and production companies require to exchange Supervisory Control and Data Acquisition (SCADA) data between wellhead and supervisory system at oil drilling platform (or onshore station).
However, data transmission over satellite link is very expensive and slow.
Because of this reason, it is only applicable for limited number of terminals with low-speed data transmission where delay is not significant.
Moreover, BWA is also a cost-effective solution for data transmission and voice communication in offshore territory.
Online since: November 2006
Authors: Wei An Lian, Wen Yuan Zhang, Yao Chun Zhang
Some empirical formulas to estimate the fatigue life and cyclic energy dissipation capacity of the bracing members are also presented based on the experimental data.
This behavior accounted for the apparent reductions in brace stiffness and maximum tension load displayed in the later cycles of the hysteresis curves.
��Some empirical formulas to estimate the fatigue life and the energy dissipation of the bracing members under cyclic loading with constant amplitude are also presented based on the experimental data.
Low-cycle fatigue damage and reduction in energy dissipation mainly depends on loading amplitude and the effects of overloads and mean compression amplitude can improve the fatigue performance of welded I-Section bracing members.
Online since: July 2021
Authors: E. Dieudonne, Evgeny V. Fominov, Maxim S. Egorov, Denis V. Moiseev, Constantine G. Shuchev
All the data obtained were compared with similar parameters for the basic alloy VK8 (Co-Mo), on the basis of which the experimental grades were developed.
The proposed by authors of [4] partial substitution of cobalt in the binders by other metals implies a reduction in the cost of HA without reducing cutting and operational characteristics, and in some cases, improving individual properties of EHA in comparison with the base alloy VK8.
Current environmental and economic requirements for the metal cutting processes imply a reduction or complete abandonment of the use of lubricating cooling liquids, which leads to an intensification of the wearing of cutting edges.
Each experiment was carried out five times, followed by statistical processing of experimental data.
Online since: August 2014
Authors: Eric Johnson, Zhong Yuan Qian, Scott Chumbley
X-ray Diffraction Measurement of Residual Stress A Bruker D8 diffractometer equipped with a two-dimensional area detector [19] and Cr tube was used to acquire the experimental X-ray diffraction data.
As regarding the data nomenclature, cut 1/10 stands for removal of one tenth (10mm) of the material along the direction A-B, 2/10 stands for two tenths (20mm), etc.
The acquired data as compared to simulations suggests that the critical parameters in determining the extent to which a sample can be sectioned and still produce valid XRD data appear to be the length of material in relation to the size of the heat tint zone (HTZ) produced by the weldment even though heat affected zone (HAZ) is traditionally the most important microstructural feature associated with a change in material properties in welds.
Relaxation is much more pronounced when sectioning perpendicular to the weld bead reduces length along the weld pass and a size factor r was derived from the experimental data.
Smith: Fundamentals of Two-Dimensional X-ray Diffraction (XRD2), CPDS-International Center for Diffraction Data 2000, Advances in X-ray Analysis, Vol. 43
Online since: January 2010
Authors: Paola Bassani, Irene Calliari, Emilio Ramous
The quantitative data of volume fractions are otherwise affected by measurements procedure.
Cold rolling was performed to 10-85% final thickness reduction.
These data confirm that the 2507 grade must be solubilised at T> 1050°, if the phase free structure is mandatory.
Indeed the reduction of Ni and mainly of Mo contents seems to allow avoiding the precipitation of intermetallic phases.
Left 750°C, 1500s, WQ Right: cold working 25% reduction
Online since: October 2014
Authors: Xiao Yu Dong
Data are the means ± SEMs from triplicate experiments.
Data are the means ± SEMs from triplicate experiments.
Data are the means ± SEMs from triplicate experiments.
Data are the means±SEMs from triplicate experiments.
Data are the means±SEMs from triplicate experiments.
Online since: November 2013
Authors: Min Dai, Yuan Chao, Zhi Sheng Zhang
If the type of products or the amount of test data is changed, both hardware and the control of software have to be adjusted, which will lead to a great reduction of productivity and generality of test handler.
If the large amount of test data or complicated test procedures lead to a reduction in the speed of E-test, and as a result affect other workstations’ movement and reduce the productivity, this method of E-test cannot be adopted. 3) Traceability.
A test thread is created to operate E-test, including sending test commands, reading test data from testing instruments, storing test data to database and sorting qualified products.
Problems of data synchronization can be solved in this way.
CTestDataBase is created to store test data instantly to database.
Online since: June 2011
Authors: Mohamed Konneh, Agus Geter E. Sutjipto, Afzeri Afzeri, Darmawan Darmawan, R. Muhida
Task of server is to receive data from client, responds the client message to update the representation of virtual model.
Remote Desktop Protocol allows for carrying presentation data, serial device communication, and licensing information with encrypted data transmission.
Multipoint data delivery allows data from an application to be delivered in "real-time" to multiple parties without having to send the same data to each session individually.
Reduction of data transfer rate can be done by reduction of color bit.
Server is a system to control data between remote user and machine as shown in Fig.2[10].
Online since: January 2020
Authors: Yuliia B. Egorova, Lyudmila V. Davydenko, Alisa V. Shmyrova
The article provides the results of statistical research on the dependence of the mechanical properties of bars with a 14 mm diameter, made of the titanium alloy VT22, on the heat treatment modes and the chemical composition on the basis of the analysis of experimental, literature and manufacturing data.
Original Materials and Research Conduct Method The initial data for the statistical analysis were the results of experimental research and production tests as well as reference data [20-23].
Statistical Research Results and Their Discussion At the first stage the authors made a generalization (Tables 2, 3) and conducted a statistical analysis of reference data [20-23] in relation to the search of the mechanical properties of the forged 14х14 mm bars made of the alloy VT22 for various smelts after heat treatment.
On the basis of the statistical research of experimental, reference and production data the authors analyzed the correlation links of the mechanical properties with a chemical composition and the modes of heat treatment of the bars made of the alloy VT22. 2.
Kulaichev, Methods and Means of Complex Data Analysis. 2006.
Online since: April 2014
Authors: Hao Hua Jia, De Min Wei
𝛽is defined as the lateral stiffness reduction coefficient, e.g. .
The lateral stiffness reduction coefficient at collapse point C is denoted as, e.g. ; γ is the inter-storey drift angle, e.g. .
The relationship between the lateral stiffness reduction coefficient and the inter-storey drift angle is derived in reference [2], according to the experiment data, as follows: =1.0 (≤1/ 500) (1) =(1/ 500<≤1/ 100) (2) =0.65-20(>1/ 100) (3) The horizontal line, curve and slash can be represented by Eqs.(1), (2) and(3), respectively, shown in Fig.3.
Researches show that[7], if the stiffness reduction coefficient after yielding is greater than 0.2, the structure elastic-plastic seismic response should have good stability.
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