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Online since: January 2013
Authors: P.S. Pa
In addition, workpiece machining through the electrochemical process can improve the precision with the appropriate control of machining conditions or the electrode geometry [8].Data showed that the gap width between the electrode and workpiece directly influences the current condition and the discharge dreg of the electrolyte [9].
The amount of the removal reduction from the color filter surface after electrochemical machining for ITO is 15nm.
Compared with the experimental results, the small gap-width accompanied by a large electric power and a fast feed rate of the workpiece (optical PET diaphragm), shows a reduction in the machining time.
The amount of the removal reduction from the color filter surface after electrochemical machining for ITO is 15nm.
Compared with the experimental results, the small gap-width accompanied by a large electric power and a fast feed rate of the workpiece (optical PET diaphragm), shows a reduction in the machining time.
Online since: October 2013
Authors: Yun Fen Feng, Xiao Yan Yang, Jin Xin Gong, Qin Zhang
The third phase is the time from concrete cover cracking to an unacceptable level which is defined as 10% of reduction of bar cross-sections.
In this paper, the diffusion coefficient is written as (3) Where D(t) is the diffusion coefficient at time t (m2/s); D0 is the diffusion coefficient at some reference time t0 (usually 28 days) (m2/s); m is the age reduction factor depending on mix proportions, m=0.2+0.4(FA/50+SG/70)m [3], where FA and SG is the levels of fly ash and slag, respectively; kD is a factor representing the effects of temperature, humidity and sustain loading on the chloride diffusion coefficient, which can be defined as (4) Where kD,T, kD,RH and kD,load are respectively the factors accounting for the influence of temperature, relative humidity and loading on D(t).
(11) In this paper, the corrosion rate, λ1, is expressed as follows [8]: (12) Where ki,load is the factor representing the influence of loading on corrosion current density and can be expressed as [8]: (13) According to the observed data, Liu and Weyers developed the relationship between corrosion current density and time since initiation [2]: (14) Where tp is the time since corrosion initiation; icorr(1) is the corrosion current density at the time of corrosion initiation
In this paper, the diffusion coefficient is written as (3) Where D(t) is the diffusion coefficient at time t (m2/s); D0 is the diffusion coefficient at some reference time t0 (usually 28 days) (m2/s); m is the age reduction factor depending on mix proportions, m=0.2+0.4(FA/50+SG/70)m [3], where FA and SG is the levels of fly ash and slag, respectively; kD is a factor representing the effects of temperature, humidity and sustain loading on the chloride diffusion coefficient, which can be defined as (4) Where kD,T, kD,RH and kD,load are respectively the factors accounting for the influence of temperature, relative humidity and loading on D(t).
(11) In this paper, the corrosion rate, λ1, is expressed as follows [8]: (12) Where ki,load is the factor representing the influence of loading on corrosion current density and can be expressed as [8]: (13) According to the observed data, Liu and Weyers developed the relationship between corrosion current density and time since initiation [2]: (14) Where tp is the time since corrosion initiation; icorr(1) is the corrosion current density at the time of corrosion initiation
Online since: March 2014
Authors: R.K. Singh Raman, Sajjad Jafari
Samples tested in air showed a fatigue limit of 57 MPa while there was an obvious reduction in fatigue strength (17 MPa at 5×105 cycles) when tests were performed in m-SBF.
This reduction in fatigue strength (i.e., by 70%) is attributed to corrosion pits, followed by faster crack growth rate in m-SBF.
Accordingly, the authors have undertaken studies on the stress-life data for a thermo-mechanically processed Mg-Zn-Ca alloy that has been specifically designed for biodegradable implant applications.
This reduction in fatigue strength (i.e., by 70%) is attributed to corrosion pits, followed by faster crack growth rate in m-SBF.
Accordingly, the authors have undertaken studies on the stress-life data for a thermo-mechanically processed Mg-Zn-Ca alloy that has been specifically designed for biodegradable implant applications.
Influence of the Filler Root Surface Treatment on Bending Fatigue Test Results of the Hardened Gears
Online since: September 2013
Authors: Zdenĕk Jonšta, Petr Jonšta, Petr Maršálek, Jiří Havlík
Optimisation of any of the above parameters leads at the yearly production of tens of thousands to significant reduction of operation costs and thus to reduction of the production price of the vehicle.
Table 2 Results of experiment and comparison with the equivalents in the standards Data source Experiment DIN 3990 ISO 6336 ČSN 01 4686 Damage probability [%] 50 1 50 1 1 50 No shot-peened [MPa] 1001 856 1054 920 1000 700 Shot-peened [MPa] 1445 1311 - - - 910 Microhardness HV 0.05 was measured on the ruptured teeth for verification of microstructural parameters with use of the microhardness tester AMH-2000 made by LECO.
Table 2 Results of experiment and comparison with the equivalents in the standards Data source Experiment DIN 3990 ISO 6336 ČSN 01 4686 Damage probability [%] 50 1 50 1 1 50 No shot-peened [MPa] 1001 856 1054 920 1000 700 Shot-peened [MPa] 1445 1311 - - - 910 Microhardness HV 0.05 was measured on the ruptured teeth for verification of microstructural parameters with use of the microhardness tester AMH-2000 made by LECO.
Online since: August 2013
Authors: Rostislav Drochytka, Luboš Taranza
The form and the material composition of the testing bodies have the principal influence on the information value of the measured and gathered data.
Each cell consists of two half-cells and the half-cell is one part of the voltaic cell in which there is oxidation and reduction.
The electrode on which there is oxidising is indicated as anode; the electrode on which there is a reduction is indicated as cathode.
Each cell consists of two half-cells and the half-cell is one part of the voltaic cell in which there is oxidation and reduction.
The electrode on which there is oxidising is indicated as anode; the electrode on which there is a reduction is indicated as cathode.
Online since: August 2014
Authors: Jian Kun Chen, Zhi Wei Kang
The former is stimulus-driven and task-independent process and the latter is a goal-driven influenced by high-level data processing and prior knowledge.
Wu et al. [3] proposed a non-local spatial redundancy reduction method for saliency estimation.
[3] Jinjian Wu, Fei Qi, Guangming Shi: Non-local spatial redundancy reduction for bottom-up saliency estimation 2012
Wu et al. [3] proposed a non-local spatial redundancy reduction method for saliency estimation.
[3] Jinjian Wu, Fei Qi, Guangming Shi: Non-local spatial redundancy reduction for bottom-up saliency estimation 2012
Online since: March 2012
Authors: S. S. Pawale, Amol G. Baviskar
In the proposed work we have formulated technique to reduce number of domain blocks thereby reducing time for encoding and improving quality of compressed image. [2, 4]
Proposed Technique
Reduction of Domain Block.
Schematic view of reduction in domain block Comparison of range and domain block is very lengthy and time consuming process; in the proposed scheme we are using feature extraction method for the same.
There is loss of data but higher compression rate is achieved.
Schematic view of reduction in domain block Comparison of range and domain block is very lengthy and time consuming process; in the proposed scheme we are using feature extraction method for the same.
There is loss of data but higher compression rate is achieved.
Online since: May 2012
Authors: Yong Zhu, Yan Hua Zhang, Zheng Li
The former generally makes use of proportional allocation and weighted distribution, and the latter adopts the system optimization model to optimize the allocation according to the environmental capacity or target reductions.
The data of the model can switch to other units, but the model set does not lose the general.
Our country is still in the process of industrialization with the rapid development of economy, the rapid economic development bring more pressure on environmental protection and pollution reduction, especially in the present technical condition, it’s rather difficult for the comprehensive and scientific definition of the regional environmental capacity.
The data of the model can switch to other units, but the model set does not lose the general.
Our country is still in the process of industrialization with the rapid development of economy, the rapid economic development bring more pressure on environmental protection and pollution reduction, especially in the present technical condition, it’s rather difficult for the comprehensive and scientific definition of the regional environmental capacity.
Online since: November 2007
Authors: X.N. Zhang
Saito et al. [3] found that a Ti-12Ta-9Nb-3V-6Zr-1.5O alloy had a tremendous
decrease in Young's modulus after cold swaging by 90% reduction in area.
Earlier investigations on elastic properties of nanostructured materials implied a tendency of decreasing Young's modulus, but later works showed that the Young's modulus reduction might be related to the pores and other defects in these nanomaterials [5-7].
Careful comparison of the XRD data indicates shifts of diffraction peaks at different depths.
Earlier investigations on elastic properties of nanostructured materials implied a tendency of decreasing Young's modulus, but later works showed that the Young's modulus reduction might be related to the pores and other defects in these nanomaterials [5-7].
Careful comparison of the XRD data indicates shifts of diffraction peaks at different depths.
Online since: July 2008
Authors: Kevin K.L. So, Xue Qing Zhang, Moe M.S. Cheung
Having estimated the
fatigue life in cycles for the component, the data on average daily traffic specific to the bridge
roadway, distribution of traffic volume per traffic lane and expected traffic growth in future years
are used to convert fatigue cycles in terms of time (years).
Corrosion and fatigue damages will weaken structural members and result in increment of deflection, reduction of ultimate bending moment and shear capacities and reduction of fatigue strength.
Corrosion and fatigue damages will weaken structural members and result in increment of deflection, reduction of ultimate bending moment and shear capacities and reduction of fatigue strength.