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Online since: February 2015
Authors: Jie Chen, Miao Hua Huang
We received the early modeling design automobile aerodynamic coefficients, pressure distribution, velocity contours and other body outflow field data after the CFD post, combined with these data some advice to improve the aerodynamic drag of the designed car are given.
After the high accuracy computer calculation, the obtained data reflect the air drag coefficient and the flow field distribution around the vehicle.
Drag reduction on the 25°Slant angle Ahmed reference body using pulsed jets.
Online since: October 2011
Authors: E. Al-Khawaldeh, M. O. Abdalla
Moreover, real structure dynamic behavior is only available if minimum amount of data is available.
Heo et al. derived a kinetic energy based technique and applied it to real experimental data obtained from a model of an asymmetric long span bridge [5].
Expand the corresponding measured data using System Equivalent Reduction Expansion Process (SEREP) v.
Modal Expansion.Unfortunately, it is not possible to have data measurements in all DOFs.
Modal expansion solves the mismatch between the analytical model and the experimental data.
Online since: July 2020
Authors: Ulrike Grossner, Roberta Nipoti, Antonella Parisini, Salvatore Vantaggio, Marco Gorni, Massimo Camarda, Judith Woerle, Giulio Pizzochero, Virginia Boldrini, Maria Canino
No difference between the 300 K data at different magnetic field was detected.
In Fig. 2(b), the carrier density data increase progressively going from sample A, to B, and to C, at any temperature, with a common feature trend.
In the lower temperature region, the mobility data increase going from sample A to B to C, while in the higher temperature region the mobility data are higher going from sample C to A to B, the two latter also showing the maximum at about the same T.
The electron density, mobility and resistivity data at room temperature obtained by the P and Al co-implanted vdP are in agreement with the literature data for equally implanted P concentration and equal post implantation annealing temperature.
Comparing the observed effect of the annealing time with literature data has not been possible because the processing condition of the samples varied significantly.
Online since: January 2013
Authors: Hong Chun Sun, Yuan Cheng You, Mei Ling Zhang
In fact, the theoretical basis of the defect detection methods discussed in this article is that bars local stiffness reduction appears because of the crack and thereby causes curvature mode shapes mutation.
Table1 Local equivalent elastic modulus of cracks with different depths Crack depth/mm 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 E/MPa 2.1e5 2.0e5 1.7e5 1.4e5 1.1e5 7.8e4 5.5e4 3.6e4 2.2e4 7.8e3 3.1e2 In order to achieve the quantitative relationship between different cracks depths and stiffness (elastic modulus), we need to carry on the data fitting to obtain their mathematical expressions.
The computational formula of is as following: (1) Where, , is respectively test or calculated data and fitted data of the ith node; is arithmetic average ofor.
Fig.5 Relationship between the crack with different depths and elastic modulus Carry on the linear, quadratic and biquadrate fitting to the data of table 1, we can obtain the relationship between the cracks with different depths and local elastic modulus on the premise that the crack width is 1 mm as shown in figure 5.
New techniques for order reduction and damage detection in structural and rotor dynamic systems [D].2010
Online since: November 2007
Authors: Ioana Demetrescu, V. Mitran, Florin Miculescu, M.M. Sovar, E. Aldea
Cell morphology was assessed by fluorescent staining with hypericin and viability test was performed by the MTT dye reduction assay.
Such data support infrared data and are arguments in the explanation of induction of bioactivity.
According to data of table 2 the following scale for corrosion rates was supposed: natural passive TiAlNb < chemical bioactive TiAlNb < electrochemical bioactive TiAlNb.
From the open circuit potential in time data (fig. 5) at very short time of immersion of electrode in artificial saliva (5000 min), the results present a better stability of electrochemical deposition samples in comparison with the untreated and chemical deposition samples.
The viability test performed by the MTT dye reduction assay Conclusion Bioactivation method is directly related to surface stability and to in vitro compatibility. 1.
Online since: January 2015
Authors: Konstantin V. Zavadovsky, Marina O. Gulya, Yuri B. Lishmanov, Denis I. Lebedev, Stanislav M. Minin
Data were shown as arithmetic mean ± standard deviation (M ± SD).
These data did not obey a normal distribution law (by the Kolmogorov-Smirnov criterion).
Results and Discussion According to data of myocardial perfusion scintigraphy with 99mTs-MIBI and metabolic scintigraphy with 123I- BMIPP, the average size of perfusion and metabolic defects in patients with DCM did not exceed 10%.
In the delayed scan, there was a significant reduction in the size of the metabolic defect and an increase in perfusion-metabolic mismatch.
Our data are consistent with the studies of the Japanese authors [12] who showed that the presence of negative perfusion-metabolic mismatch detected using positron emission tomography with fluorodeoxyglucose and SPECT with 201Tl, defines a positive response to CRT.
Online since: January 2021
Authors: Francesco Panella, Alessandra Pirinu
IRT and UT experimental data are elaborated with MATLAB codes software for damage analysis and results are implemented to check results with strain and compliance data acquired during tests; data elaboration and post-processing of all experimental results are discussed.
Fatigue test data are recorded with a frame rate of 10 Hz and fatigue results seem to show a significant stiffness reduction increasing load cycles number, as normalized stiffness vs normalized fatigue life in Fig. 2b.
Amplitude data are recorded at regular intervals each of 10000 cycles and resulting data are analyzed as function of probe position on sample ROIs.
A graphical method was adopted on phase data to assess fatigue limit.
Saponaro, Advanced NDT Methods and Data Processing on Industrial CFRP Components, Applied Sciences 9(2019), 393.
Online since: August 2019
Authors: Alberto Custodi, Nicola Santopuoli
In the latest studies we have assumed the Guidelines (2011) for the "Evaluation and Reduction of Seismic Risk of Cultural Heritage.".
Guidelines for the evaluation and reduction of seismic risk of cultural heritage.
The evaluation of the seismic action, together with the previous data, is obtained from the knowledge of the topographic position of the site in question (Forlì-Cesena, Latitude ED50 44.2264 °, Longitude ED50 12.114 °, altitude 22.5 m above sea level, seismic zone 2) with respect to the reference grid and the evaluation of the local geological-stratigraphic and topographical features.
The presence of imbibition produces a reduction in the mechanical characteristics of the masonry, which have been considered with an additional reduction coefficient [7, 14, 15].
The reduction coefficient was applied to a masonry layer of two meters in height, both for the outer ring and for the inner ring.
Online since: November 2023
Authors: Hidayat Fauzi, Sri Retno Dwi Ariani, Lina Mahardiani, Endang Susilowati
Synthesis of colloidal silver nanoparticles has been successfully conducted through the chemical reduction technique.
Silver nanoparticles can be produced via the chemical reduction technique.
Further, the brownish-yellow change to brown was caused by LSPR excitation and AgNO3 reduction.
The generated Ag atoms would become the nucleation center and catalyze the reduction of the remaining Ag+ ions, causing aggregation.
PSA characterization data Sample PDI Average size (nm) Standard deviation (nm) A4 0.563 1.82 0.578 A6 0.540 1.30 0.325 The PDI value is associated with the standard deviation and particle size distribution curve shown in Fig. 8.
Online since: June 2010
Authors: Jerry D. Lord, Nick J. McCormick, J.M. Urquhart, Grant M. Klimaytys, Ian J. Lingham
The DIC displacement profile data was first normalised by dividing the displacement data by the load increment with respect to the "reference" frame to give the unit load-deflection for the specimen.
Results were in excellent agreement with the published manufacturer's data, which gives a value for elastic modulus of 3.1 GPa.
The flexural strength data for the graphite specimens is plotted against density in Figure 7.
Figure 8 shows the corresponding DIC-derived modulus data obtained from the same series of tests.
The DIC-derived modulus data were systematically lower than the dynamic modulus values, in the ratio of ~0.92.
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