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Online since: June 2014
Authors: David Strong, Ying Chun Chen, Hao Wu, Phil B. Prangnell
In the work presented when welding a high strength 7050 aluminium alloy, even in a relatively thin 6 mm plate, it is shown that SS-FSW has several advantages; including a reduction in the heat input, a massive improvement in surface quality, and a more uniform through thickness temperature distribution, which leads to narrower welds with a reduced heat affected zone width and more homogeneous through thickness properties.
Thermocouple measurements were made at six locations; near the top surface, plate centre and bottom, near the tool, and at distances of 10, 20, 30 mm, at the plate centre line to provide calibration data for the thermal model.
By calculating the theoretical torque at zero rpm, when the material will be at room temperature and have a uniform flow stress, a zero point can be obtained allowing exponential torque - rotation rate decay curves to be fitted to the experimental data [6] (Fig. 1a), from which the welding power curve can also be derived (Fig. 1b).
In addition the welds show little reduction in section thickness, and have a narrower weld zone profile, which results from a reduced HAZ width, and have more uniform through thickness properties.
Online since: September 2013
Authors: Zhu Min Chen
Cloud storage needs to have a big breakthrough in the amount of data storage and security compared with the traditional data storage solutions.
Node server is the original server in distribution system, which is responsible for the data storage in data pool and running virtual software.
Node server can learn from a highly scalable data distribution strategy [10] in data storage.
Energy Efficient Resource Management in Virtualized Cloud Data Centers[C].
Energy Efficient Allocation of Virtual Machines in Cloud Data Centers[C].
Online since: September 2011
Authors: Chuan Jiao Sun, Ru Yue Bai, Yuan Yuan Yu
Abstract: 9238 traffic accidents data are collected in rural road of China.
Through the data analysis, the main causes of rural road traffic accident are presented.
This paper collects rural road traffic accident data in some provinces of China, analyzes the main features of rural traffic accidents.
Comparison the overall statistics with the survey data: not keep a safe distance in survey area is not a more prominent compared with the national level.
The reason is that more sunny day data are collected and the sunny day are usual in the whole year.
Online since: March 2025
Authors: Yahdi Bin Rus, Haris Luthfi, Maria Ulfa
In the in-situ crystallization approach, metal salts and graphene oxide reduction co-occur.
CV curve of ITO in similar medium shows cathodic reduction.
Based on these CV curves, the cathodic reduction plateau initiates at approximately 0.6 volts on rGO and slightly more positively, around 0.7 volts, on bare ITO.
Availability of Data and Materials No data was used for the research described in the article.
Sheremet, Photochemistry dominates over photothermal effects in the laser-induced reduction of graphene oxide by visible light, Nat Commun 15 (2024) 9711
Online since: August 2011
Authors: Ding Hua Zhang, Yi Wei Dong, Kun Bu, Yang Qing Dou
The applicability of this method is validated using numerical simulation data.
Results and Discussions A certain type of turbo blade is used for optimization in this paper, an optical photography device: ATOS II was adopted to get a set of real measurement data of a turbo blade and the measurement data was expressed as a STL file.
By investigating the investment casting of a typical blade, substantial reduction in dimensional and shape tolerances is achieved with the proposed die-shape optimization method.
Online since: October 2018
Authors: Irina Sergeevna Pyshkina, Ch.V. Zhegera
The data of the analysis of mineralogical composition of the investigated additives are given, the influence of additives on the change in the plastic strength of the lime test and the content of free lime is revealed.
The interpretation of the X-ray diffraction patterns was carried out by comparing the interplanar distances and the intensity of the corresponding lines on the obtained X-ray diffraction patterns with the data for reference substances [10].
Additional evidence of the chemical interaction of modifying additives with lime is data on the change in the amount of chemically free lime (Fig. 3).
Thus, the introduction of synthesized additives into the formulation of lime mixtures leads to a reduction in the amount of free lime.
Online since: August 2015
Authors: Thanapong Suwanasri, Warunee Srisongkram, Ratana Kem, Phanupong Fuangpian
The actual data of all equipments in substation are used in the simulated circuit by using ATP/EMTP program.
Two power transformers are modeled using BCTRAN model with the data from manufacturer test report.
Table 1 The parameter data in KTL substation Equipment Parameter Equipment Parameter 1.
Therefore, increasing inductance results in the reduction of inrush current frequency, its rate of change and overvoltage at busbar.
Conclusion The simulation of capacitor bank switching in 115 kV substation is presented in this work by using actual data from substation.
Online since: May 2015
Authors: Tai Ping Chang
The vehicle-induced responses of the bridge in the damaged state are used as input data for damage identification and the response sensitivities with respect to the damage indices of the elements are calculated to establish the sensitivity matrix.
The vehicle-induced responses of the bridge in the damaged state are used as input data for damage identification and the response sensitivities with respect to the damage indices of the elements are computed to establish the sensitivity matrix.
The damage index of the bridge can be denoted as the relative reduction ratio of the norm of the element stiffness.
Assuming the damage index is related only to the stiffness of the dynamic system, the following differentiation equation can be achieved: (3) It is noted that the velocity response and the displacement response, computed from Eq. (1), are the input data for Eq. (3).
The vehicle-induced responses of the bridge in the damaged state are used as input data for damage identification and the response sensitivities with respect to the damage indices of the elements are computed to establish the sensitivity matrix.
Online since: June 2014
Authors: Shahnor Basri, S.N.A. Safri, N. Razali, Mohamed Thariq Hameed Sultan, Noorfaizal Yidris, Faizal Mustapha
All of the signals captured from the impact test were recorded using a ballistic data acquisition system.
This weight reduction results in improved mobility, fuel efficiency and transportability of armoured vehicles [1].
This instrument was connected to a ballistic data acquisition system to record the responses from the impact test.
The test machine consists of five main components, which are the catch chamber, ballistic data acquisition system, pressure reservoir unit, the firing mechanism unit and the launching unit.
The response signals from each test specimen were recorded using a ballistic data acquisition system.
Online since: March 2004
Authors: Young Won Chang, Tae Kwon Ha, Sang Ho Ahn, Hwan Jin Sung
By applying this new model to not only the results obtained in this study but also to previously published data, its generality and validity were sufficiently verified.
It is interesting to note that the less the initial pores the smaller the reduction of strength due to increase in porosity.
Salak Fleck & Smith Tronshenko Exner & Pohl model is applied to the experimental data showing a very good agreement in the entire range of porosity.
Data Relative Strength Porosity Expected Experiment 0.0 0.1 0.2 0.3 0.4 0.5 0.0 0.2 0.4 0.6 0.8 1.0 Pi = 0.4 Exp.
Data Relative Strength Porosity Expected Experiment [14] H.
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