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Online since: August 2006
Authors: W.J. Clegg, J.E. Pitchford, Elis Carlström, L.K.L. Falk, Stefan Gustafsson, E. Lidén
This is not the case and substantial reductions in creep rate are still observed.
To compare these results with the predicted creep-rates from Eq. 6, values of DmΩm at 1300 and 1400 °C have been determined from existing diffusional creep data for pure mullite, using Eq. 1, where f is set equal to 1.
Diffusion data for mullite and SiC DmΩm [m5 s-1] DpΩp [m5 s-1] 1300 °C 1.0 × 10 -49 - 1400 °C 4.5 × 10 -48 8.5 × 10-50 Table 1 Estimated values of DmΩm and DpΩp for mullite and SiC at 1300 and 1400 °C respectively.
The data for the monolithic mullite gives reasonable agreement with the rates expected from Eq. 1, where f is set equal to 1, and the values of DmΩm estimated from other data in the literature.
The rates predicted for creep of the nanocomposite obtained from Eq. 6 and the diffusion data in Table 1 are shown by the solid line in Fig. 1 and are in reasonable agreement with the data obtained.
Online since: September 2017
Authors: Nima Razavi, M. Peron, F. Berto, J. Torgersen, F. Mutignani
The results are compared with previous data from notched galvanized specimens weakened by a central hole and not treated specimens characterized by the same geometry.
The available data on this topic are the very few and the present technical note is aimed to partially fill this gap of the recent and past literature providing also a clear explanation for the preparation and final assembly of the specimens.
The typical expression for the S-N curve in EC3 is reported as: (1) From the re-analyses of the data it is clear that considering a Ps of 97.7% at two million cycles Ds is equal to 100 MPa which is slightly lower than the corresponding classified category Dsc=112 MPa derived from EC3 for the considered uncoated bearing-type connection.
It is possible to observe that all data fall inside a narrow scatterband and that the reference value at two million of cycles and corresponding to a Ps of 97.7% remains almost the same (101 MPa) with almost no significant differences between galvanized and not-galvanized specimens (see Fig. 2).
(a) S-N-curves of hot dip galvanized connections, (b) unified scatterband considering uncoated and hot dip galvanized connections Conclusions This short technical note reports some new data from hot dip galvanized steel bolted connections under fatigue loading.
Online since: April 2014
Authors: Mohd Zulkefli Selamat, W.M.F.W. Mohamad, B. Bundjali, M. Musa
The as-received alloy was cold rolled up to 50% reduction in thickness (%RT).
The accuracy of the Tafel analysis data is shown by the higher values of coeficient (»1.000) for all steel specimens.
Table 2 illustrates the electrochemical data of the alloys which directly obtained from Tafel analysis.
Table 2 Electrochemical data of as-received and cold-rolled 316L stainless steel in aerated PBS solutions at 37oC and pH 7.31 obtained from Tafel analysis.
The lowest corrosion rate (23% reduction of corrosion resistance) was obtained for the alloy with 50% cold reduction.
Online since: February 2014
Authors: Veronique le Corvec, Philippe Lévèque, Dominique Siegert, Frederic Bourquin, Julien Waeytens
Data misfit functional.
Using these fields and mesh data, the gradient is computed from a python script.
In practice, the data outputs εxxmes are measured.
(14) In Table 1, the value of the maximum data misfit and its associated relative error are given, k corresponds to the sensor number which has the highest data misfit.
After the third iteration, we note that the data misfit reaches a plateau.
Online since: July 2014
Authors: Yuan Li Gu, Tong Jin Gao
According to the traffic survey data and meteorological data of a certain section between Jinshan and Wuhan on Beijing-HK-Macao Expressway, the change of the weighted average speed and the speed of different vehicle types under different visibility grades was studied, and the linear speed-density model of Green Shields was improved using the method of curve estimation and regression analysis. 
Sources of Data Traffic survey data were obtained by the microwave detector on a certain section between Jinshan and Wuhan on Beijing-HK-Macao Expressway, the detecting time is from April 22, 2012 to July 18, 2013, a total of about 400000 pieces of original data.
First of all, the relationships between speed (V) and visibility (D) and vehicle types (S) are estimated by the method of curve estimation using data set.
In order to test the rationality of the improved model, according to the actual testing data,regression analysis is applied to calibrate the linear speed density model and the modified model.
The vehicle speed for 4 data sets in mist, fog, strong fog and dense fog on this section is calculated and compared with the actual speed.
Online since: January 2019
Authors: Kean Chuan Lee, Hasnah Mohd Zaid, Beh Hoe Guan, Muhammad Naim Mohd Sukri, Hassan Soleimani
All of the test data obtained from all instruments for different composition of Samarium doped YIG nanoparticles/nanofluids will then be recorded and tabulated for discussion and analysis.
The data simplified above shows that as the doping composition of samarium into YIG increases, the magnetic saturation of the sample becomes higher in value.
The reduction of mobility ratio helps to generate a better sweeping process.
Table 2 and Fig. 4 present the data obtained from viscometer and shows that the viscosity reading of each sample under the presence of EM increases.
From the data obtained from experiments which have been done in this research, author believed that the doping of Samarium doped YIG nanofluid under the presence of electromagnetic waves is theoretically improving the oil recovery in EOR process.
Online since: July 2015
Authors: Si Putu Gede Gunawan Tista, Ainul Ghurri, Hendra Wijaksana
Configuration of 36 Testing Holes , Cp Data Collecting Procedure The data collecting procedure is conducted after determining or measuring the whole instrument that support in this data collecting procedure.
Data Collecting Steps : 1.
When the blower has already stable, conduct data collection. 4.
The data collection of the pressure distribution with the variation of the distance between ring with 10o sloping angle, is conducted by collecting the data from the cylinder surface. 5.
The data collection is taken three times at every variation of distance between ring.
Online since: May 2020
Authors: Sergei S. Belskii, Nina V. Nemchinova
However, while the inflows were easy to determine from factory data, the inter-tank flows had to be matched stepwise based on the material balance of the process while modeling.
Crystalline silicon chemical composition data were compared to the EMP data [25].
Data, V. 14, Supplement N 1, 1985
Data, V. 14, Supplement N 2, 1985
Powell, An internally consistent thermodynamic data set for phases of petrological interest, J. of metamorphic Geology. 3 (1998) 309-343
Online since: May 2004
Authors: M.D. Obradović, B.N. Grgur, Lj.M. Vračar
Apparent Enthalpies of Activation for Oxygen Reduction at Pt3Co Electrode in Alkaline Solution M.
Vra�ar 2� 1Institute of Chemistry, Technology and Metallurgy, Department of Electrochemistry, Belgrade, Serbia and Montenegro 2Faculty of Technology and Metallurgy, University of Belgrade, Belgrade, Serbia and Montenegro Keywords: Enthalpy of Activation, Oxygen Reduction, Pt-Co Alloy, Reaction Mechanism ABSTRACT Oxygen reduction (OR) at a Pt3Co alloy electrode has been examined in alkaline solutions of different pH’s in the temperature range from 274 to 313 K.
INTRODUCTION The oxygen reduction reaction is of most importance in electrochemical energy conversion devices such as fuel cells and metal-air batteries, as well as in corrosion and in several industrial processes.
In Fig. 2, the values of Tafel slopes, obtained from E - log j data in the high cd region, in solutions of different pH’s, are plotted against T.
Analysis of the experimental data All the quantities on the right side of Eq. 11 are either known (El and Eh) or can be determined experimentally ( � � lEa,H , � � hEa,H and ( � F/T)[d ET / d (1/T)]).
Online since: August 2016
Authors: Carlos Alberto Alves Cairo, V.A.R. Henriques, Eduardo T. Galvani, S.L.G. Petroni, C.C. Girotto
The mechanisms involved in the compaction of powders were detailed through the fit of compressibility data to a theoretical model originally developed for titanium powders.
A further reduction in costs may be achieved depending on the type of powder used and the technique employed.
The obtained apparent densities decreased with the reduction of the powder size (Table 1).
Table 3 shows parameters obtained from the fit of experimental data according to Eq. 1.
The excellent correlation of the experimental data to Eq. 1 was observed through the R2 values in Table 3.
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