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Online since: March 2019
Authors: Rajkumar Durairaj, Ming Chian Yew, Ming Kun Yew, Lip Huat Saw, Jing Han Beh, Yeong Jin King
.% of ES nano bio-filler, respectively showed a significant reduction in total heat rate, promoting thicker and more uniform char layer in protecting the steel structural.
The results were calculated based on the average of three experimental data [8].
Comparison of the temperature profile of the coated steel plates and height of char layer Moreover, the data in Fig. 2 also showed that the thickness of the intumescent char layer for B and D containing ES nano bio-filler was increased to 39.0 mm and 48.0 mm, respectively.
The samples B and D showed a very significant improvement in reduction of THR with the addition of ES nano bio-filler.
Online since: December 2013
Authors: Azry Borhan, Suzana Yusup, Nor Adilla Rashidi
In addition, reduction in the adsorption capacity with respect to temperature proves that the physisorption process is dominant.
The data was stored in Microsoft Excel macros.
Fig. 3: N2 adsorption isotherm at -196oC Type I isotherm data is evaluated to acquire the BET surface area, pore volume, and average pore diameter, and the findings of the porosity for both activated carbons are as tabulated in Table 1.
Based on Fig. 4 and Fig. 5, the reduction in the CO2 and N2 adsorption capacity with respect to temperatures implies that the physisorption process is dominant.
Online since: December 2013
Authors: Krzysztof J. Kaliński, Marek A. Galewski, Michał R. Mazur
At first, the workpiece modal parameters are estimated based on experimental data which leads to verification of computational model.
There are many methods for the chatter reduction whose feature is to interfere with the machine tool spindle speed [2-4].
The general concept of the proposed method is to determine first the workpiece modal parameters based on experimental data.
Galewski., The Optimal Spindle Speed Map for Reduction of Chatter Vibration During Milling of Bow Thruster Blade, Solid State Phenomena, 198 (2013) 686-691
Online since: September 2017
Authors: S.S. Gerasimov, Irina A. Gruzdeva, Vladislav R. Baraz
The mold temperature reduction from 550 °C to 450 °C leads to the grain size decrease and the little yield strength increase.
Such approach allows getting the most accurate information using a minimum volume of experimental data.
Table 1 presents data about the studied parameters taking into account the zero level, the varying intervals, as well as the upper and lower levels.
The reduction from 550 to 450 ° C contributes to decrease the grain size (20-25%) and increase lightly σ0,2 (no more than 10%).
Online since: January 2005
Authors: Hae Ryung Kim, Jaihyun Seu, Hamid Arastoopour
The formation of agglomerates or clusters results in a reduction in the number and an increase in the size of particles, both of which directly affect the frequency of inter-particle collisions and, in turn, the particle phase properties such as viscosity and pressure, as well as gas/particle drag force in gas/particle flow systems.
Moreover, the experimental data on particle fluctuating velocity using LDA by Zhang et al.[5] showed the significance of fluctuating velocity in identifying the particulate phase flow patterns in agglomerating or clustering particle flow systems.
Savage and Jeffrey showed good agreement between their theoretical prediction and the experimental data at 7.1=tR [8], and Lun also reported that tR can be of the order one when the collision becomes relatively less elastic[9].
S Chou: A Theory for Grain-Size Reduction in Granular Flows of Spheres, J.
Online since: December 2023
Authors: Hideki Okada, Takumi Wada, Hiroki Oribe, Tsuyoshi Kimura, Katsuyuki Kitahara, Takashi Kitahata, Naoya Hirano, Shunya Azami
Those skin sheets have complex shapes which include mainly machine milled thickness reduction area called pockets, thickness tapers, cutouts for the windows and doors.
Using data set of shim thicknesses based on current process with specified geometry of the die and the punch as the stroke amount for the variable punches would not works well.
In addition, no one has sufficient data of preferable shim thickness to apply newly designed skins.
It provides significant improvement in an accuracy and great reduction in a manufacturing time compared to the conventional methods.
Online since: June 2023
Authors: Tobias Erlbacher, Eric Guiot, Tom Becker, Jürgen Leib, Frédéric Allibert, Walter Schwarzenbach, Carsten Hellinger, Séverin Rouchier
The Smart Cut™ technology enables the combination of a high quality single crystal SiC layer onto a low resistivity handle wafer (<5mOhm.cm), allowing device optimization as well as the reduction of device’s conduction and switching losses.
The most commonly used method to form an ohmic contact to SiC devices, mainly to contact a device from its back side, includes the deposition of a metal layer followed by an annealing (at approximately 1000°C) to induce a reaction of the metal with the SiC (i.e. with the formation of silicides, carbides, or ternary phases), with a consequent reduction of the barrier height or the barrier thickness [8].
Fig. 1a: Sheet resistance of 70 nm NiAl2.6% on 4H-SiC substrate as-deposited with 225 data points measured.
Fig. 2b: Sheet resistance of laser annealed 70 nm NiSi on 4H-SiC substrate with different laser energies, ranging from 2.3 – 3.3 J/cm² and a non-annealed area with 625 data points measured.
Online since: January 2012
Authors: Qun Dang, Xiao Li Lei
According to Doppler’s different impacts on the correlation Peak and data demodulation, PN-code is acquired through single channel matched-filters, and parallel multi-channel correlators are used in the data demodulation branch channel.
Identical phase data and quadrature-phase data can be expressed by (5) and (6)
(5) (6) By judging identical phase data I3 is positive and negative, the demodulation data can be attained.
The most additional phase shift brought by identical phase data: 2πfdT=0.21π, reduction of SNR: 20lg(cos(0.21π))=-2db.
Therefore, taking parallel three-way channel scheme into data demodulation method, polarity reverse of data can be avoided, and deterioration extent of SNR can be reduced.
Online since: August 2013
Authors: Zi Rui Lan, Hong Wu Zhang
Construction of regional energy efficiency evaluation index system Data sources and reduction The construction of evaluation index system for regional energy efficiency is on the basis of certain data like subsector energy consumption, three industries added value and its proportion, etc.
This research adopts publicized data from China Statistical Yearbook, China Energy Statistical Yearbook, etc. as authentic sources.
Calculation of these 3 indexes shall be done only after 1) the decomposition method for subsectors has been settled; 2) subsectors could effectively handle data reduction and 3) indexation method has been determined.
Besides, the relationship between processed data and average level could be directly reflected by the data size after standardization processing.
Data sources The data used in this paper is extracted from China Statistical Yearbook (2011) and China Energy Statistical Yearbook (2011).
Online since: June 2021
Authors: Iuliana Duma, Aurel Valentin Bîrdeanu, Alin Constantin Murariu, Radu Nicolae Popescu
Results comparison of the two methods applied revealed a reduction of the preliminary estimated remaining live obtained using metallographic replica analysis.
The "Coxing chamber" has the following dimensional and technical characteristics (figure 1): - Interior diameter: D = 6200 mm - The calculus length of the cylindrical element: L = 18500 mm - Nominal volume: V = 687 m3 - Upper / lower bottom: Spherical / Conical reduction - Thickness projected (W 1.5423 steel) Sp = 25 mm - Addition for operating conditions (lining of X6CrAl13 steel, W1.4002): C1 = 3 mm - Maximum allowable pressure: PS = 0,5 MPa - Working pressure: PL= 0,4 MPa - Hydraulic test pressure (top level): Pînc.=1,45 MPa - Admissible temperature / maximum permissible: TSmin / TSmax = +15 / +485 °C - Minimum temperature / maximum for work: Tmin / Tmax = +30 / +475 °C - Number of operating cycles: Nc = 3380 cycles - Total operating hours: Nt = 144882 hours - Thermal isolation: 250/200 mm; Figure 1 The aspect of the coxing chamber (box) 2.
Material 16Mo3 Test Data Test Name Temperature Stress Strain Time Selected 1 480 300 rupt. 2740 YES 2 480 300 rupt. 2620 YES 7 480 255 rupt. 2888 YES 8 480 255 rupt. 2746 YES 11 500 200 rupt. 2813 YES 5 500 255 rupt. 2728 YES 6 500 255 rupt. 2674 YES 12 500 200 rupt. 2722 YES 9 520 200 rupt. 2680 YES 16 520 300 rupt. 1483 YES 15 520 300 rupt. 1390 YES 10 520 255 rupt. 2748 YES 14
Conference on Cyclic Operation of power plat, Institute of Materials (IOM3) London, 27-28 September 2007; [3] * * * Expert system iRis-Power, iRis-Institute, Stuttgart, 2007; [4] * * * ASTM E 606: Constant amplitude low-cycle fatigue testing; [5] * * * GOST 25.505-05: Metod ispîtanii na malo]iklovii ustalosti pri termomehaniceskom nagrujenii; [6] * * * ASTM E 739-06: Statistical analysis of linear or linearized stress-life (S-N) and strain-life (e-N) fatigue data.
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