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Online since: October 2025
Authors: Venkatesh Gudipadu, Saroj Saroj, Shobhan Bhukya
Simulation results were validated against experimental data by comparing surface roughness values obtained from simulations with those measured experimentally.
Increased pressure (up to 80 bar) led to a significant reduction in roughness, with further pressure increase showing diminishing effects due to saturation in media-workpiece contact area.
Experimental results confirmed that increasing extrusion pressure and cycle count contributed to a significant reduction in surface roughness, enhancing the biocompatibility and longevity of the implants.
Online since: November 2013
Authors: Bénédicte Chambon, Régis Lacote, Suttipong Angthong, Chaiya Kongmanee, Buncha Somboonsuke, Sophie Mazon, Akaraya Puengcharoen, Charlotte Martin
We used a structured questionnaire to collect data concerning the characteristics of the farms and the practices in the rubber plantations.
We did not observe a reduction of tapping frequency during the leaf fall season as we did in a previous survey conducted in 2008 in the South.
And in the North and Northeast, the long dry season induces a reduction of the tapping period.
Online since: June 2014
Authors: Dong Ya Song, Rui Fang Li
Introduction With China's laws and regulations to further improve energy saving and emission reduction, the society has pay more attention to reduce fuel automobile tail gas.
In general, the energy reduction for storage battery is beneficial to the improvement of the system efficiency.
Specific simulation parameters are as follows: vehicle drag coefficient 0.30, effective cross sectional area 2.3㎡, car weight 1500 kg, the engine displacement 1.4 L, maximum power 65kw, motor power 33kw, battery capacity 20ah, rated voltage 168v, SOC theoretical value 0.7, gearbox for five speed shift, the rest of the parameters comes from the literature [6] data.
Online since: November 2014
Authors: Bogdan Bogdanski
There is a lot of bibliographical data concerning the diffusion chromizing process, in particular, problems connected with hard carbide layers produced by the pack powder method, which are quite well expounded [6–9].
Chromium is transferred to the steel surface by one or more of several possible deposition reaction (of interchange, of reduction, or of thermal dissociation types) and then it diffuses in it to create a layer.
Reduction of chromium concentration in the layer was associated with the simultaneous increase of iron concentration, while the concentration of carbon remained at the same level of about 9 wt. %.
Online since: December 2010
Authors: Xian Qiong Zhao, Yi Lun Liu, Sheng Huang
Centre distance of rolling reduction device is B=3500mm.
Plasticity coefficient Mi of each stander is gotten by rolling data of scene.
Rolling reduction of equation Kf take typical value of each stander among it, so it gets number Kf which is approximation.
Online since: September 2018
Authors: Muhammad Salman, Wilayat Hussain, Anwaar Ellahi
In our production technique the reduction process of graphite oxide along with addition of ferrite content (stoichiometric amounts of Co-nitrate and Fe-nitrate) was carried out in a flask (kept at 280oC for 6 hours) instead of an autoclave.
Despite reduction in the amount of RAM our results show that the microwave absorption of RAM added silica fiber phenolic samples is still greater than the pure sample.
Different sorts of silica fibers give rise to different composite properties and the comparison of the results obtained with the literature data is deficient because these composites address sensitive zones of aerospace industry.
Online since: January 2010
Authors: Claudinei dos Santos, Luiz A. Bicalho, Carlos Antonio Reis Pereira Baptista, R.C. Souza, M.R.J. Barboza
There is a strong demand to generate design-relevant fatigue data which are required for many of the projected applications of structural ceramics.
In contrast, the reduction of the maximum stress promotes a significant increasing of the number of samples without failure during tests (2 × 106 cycles).
A tendency of the cycles reduction as function of stress increasing, to which the samples are submitted during fatigue tests, can be observed in Fig. 4, taking into consideration the standarddeviation of the results. 0.0 5.0x10 5 1.0x10 6 1.5x106 2.0x106 2.5x106 3.0x10 6 200 220 240 260 280 300 Fatigue strength zone Fatigue strength limit ZrO2- 3% bioglass Stress (MPa) N (Cycles) Fig. 4 - Statistical results of cyclic fatigue of the ZrO2-3%bioglass samples.
Online since: June 2012
Authors: Yun Hae Kim, Kyung Man Moon, Min Seok Oh, Jong Pil Won, Myung Hoon Lee
Consequently, it is suggested that the results of this study may provide a good available reference data to eliminate iron dissolved in flux solution as well as to eliminate impurities of the process of other plating fields which is associated with hot dip galvanizing.
Thus, the increment of addition of thiourea is condidered to play a role to inhibit oxygen reduction reaction as well as hydrogen evolution reaction.
As a result, their values tended to showed increasingly a lower value with decreasing amounts of thiourea additive, which may be resulted in increasing of overvoltage due to inhibition of all reduction reaction which take place at the surface with increment of thiourea additive.
Online since: December 2010
Authors: Zhi Hong Pan, Ai Qun Li, Yi Gang Sun
There are many types model of micro-model based on solid mechanics[3, 4] and macro-model based on member.[5] However, deficiency in many models includes[6] :(1) effects of confined concrete of boundary zone on mechanical behavior of shear wall are seldom considered; (2) it can not satisfy the demands of fine inelastic analysis focusing on the deformation capacity focused on seismic performance evaluation, since whole curve of load-displacement of shear wall, especially the post-peak descending curve, under lateral force is difficult to be obtained, resulting in inaccuracy prediction to post-peak mechanical behavior, and (3) it is weak on shear response though the prediction about flexural response is accuracy and there is few data about coupled flexural and shear response.
(4) Where fc′is the peak compressive stress (MPa); n is shape parameter; k is a reduction coefficient for toughness related to concrete strength.
The reduction factor to be applied to the peak compressive stress for concrete in compression is given as:
Online since: November 2012
Authors: Hossein Hosseini-Toudeshky, Bijan Mohammadi, Mir Ali Ghaffari
These figures show well agreements between the experimental and FEM results indicating the verification of both the FEM analyses for crack propagation modeling and the used material data in Paris law.
Implementing the composite patches, cause reduction of KI stress intensity factor values along the panel thickness especially at the patched side of the panel.
It is also shown that the patch layups of [90]4 and [75]4 have more influence on reduction of KI when compared with the results of the panel with [-45]4 and [45]4 patch layups.
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