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Online since: September 2011
Authors: Fu Xiang Jiang, Tie Jun Zhao, Ming Lei Hao
In fact, concrete structures under fatigue loading usually also face the combined threat of environmental factors.
Then the resistance ability of the concrete to the outside corrosion medium will be affected, which means the durability of the concrete will be influenced obviously.
It has been verified that when cyclic loading frequencys change among 5 Hz to 15 Hz, their influence on the mechanical property of the concrete is negligible [5-7].
Pore is one of the important components of the micro-structure of concrete, which has important influence on the macro-properties of the concrete [8].
Influence of Static and Dynamic Mechanical Load on Durability and Service Life of Reinforced Concrete Structures, Ph.D.
Then the resistance ability of the concrete to the outside corrosion medium will be affected, which means the durability of the concrete will be influenced obviously.
It has been verified that when cyclic loading frequencys change among 5 Hz to 15 Hz, their influence on the mechanical property of the concrete is negligible [5-7].
Pore is one of the important components of the micro-structure of concrete, which has important influence on the macro-properties of the concrete [8].
Influence of Static and Dynamic Mechanical Load on Durability and Service Life of Reinforced Concrete Structures, Ph.D.
Online since: November 2014
Authors: S.K. Tripathi, Ramneek Kaur, Mamta Rani
Optical Properties
2.1.2.
Electronic Properties 2.2.
In this method, the main reason of alteration in different thermal, mechanical and other properties is due to increase in surface to volume ratio.
Oxide nanomaterials can lead to advanced ceramics that exhibit superior corrosion/oxidation resistance, mechanical, thermal, optical, electrical, or magnetic properties.
But the higher density of transistors increases the problem of heat generation, thus affecting the functioning of the devices.
Electronic Properties 2.2.
In this method, the main reason of alteration in different thermal, mechanical and other properties is due to increase in surface to volume ratio.
Oxide nanomaterials can lead to advanced ceramics that exhibit superior corrosion/oxidation resistance, mechanical, thermal, optical, electrical, or magnetic properties.
But the higher density of transistors increases the problem of heat generation, thus affecting the functioning of the devices.
Online since: May 2011
Authors: Yan Juan Liu, Ming Zhu, Ya Wen Yang, Ai Bin Kang
Experimental
Device and filler properties.
Considering these factors comprehensively, the running period in this experiment is flooding 1d and dry 2ds.
The reason is that wastewater flow through the constructed rapid infiltration system by gravity, the pollutants were adsorbed by the first contacted materials, so the upper site o f materials were the mainly position that adsorbed pollutants through mechanical filtration and adsorption.
Clogging is one of the main problems in constructed rapid infiltration system, which can affect the water column and the outlet water quality, also the life span of the system.
Considering these factors comprehensively, the running period in this experiment is flooding 1d and dry 2ds.
The reason is that wastewater flow through the constructed rapid infiltration system by gravity, the pollutants were adsorbed by the first contacted materials, so the upper site o f materials were the mainly position that adsorbed pollutants through mechanical filtration and adsorption.
Clogging is one of the main problems in constructed rapid infiltration system, which can affect the water column and the outlet water quality, also the life span of the system.
Online since: January 2006
Authors: Kotobu Nagai, Shiro Torizuka, S.V.S. Narayana Murty
While the primary purpose of large plastic
deformation studies has been to reduce grain size of the material in order to achieve the desired
improvement in the mechanical properties by the above said methods, there seems to be some
practical limitation in the achievable grain size in bulk engineering components.
These factors significantly affect Eq. (1) and the predicted thickness deviates considerably from the actual thickness.
These factors significantly affect Eq. (1) and the predicted thickness deviates considerably from the actual thickness.
Online since: July 2016
Authors: Shao Wei Duan, Kai Meng Zhu, Wen Geng Chen, Lei Huang
These factors, on turn, always tend to a further increase of deformations of the soil body.
The significant region affected can be considered of a width twice the excavation depth.
Main physical and mechanical properties Soil Compression modulus Ea (MPa) Internal friction angle Ф (°) Cohesive force Cu (kPa) Status Poisson- ratio μ Seam thickness /7section [m] Miscellaneous fill 3.5 10 4 Loose-Slightly dense 6.20 Silty clay 6.8 16 30 Plastic 0.32 4.45 Strongly weathered slate (120) 30 60 Very soft rock 0.26 5.45 Weathered slate 3000* 32 75 Soft rock - softer rock 0.23 11.30 Slate breeze 5000* 37 400 Softer rock 0.20 10.40 Note: the data showed in brackets was deformation modulus, and the data with “*” was elastic modulus Monitoring results. 1) Buildings settlements The monitoring results are shown in Figure 1, 2, 3, from which we can deduce: A.
The significant region affected can be considered of a width twice the excavation depth.
Main physical and mechanical properties Soil Compression modulus Ea (MPa) Internal friction angle Ф (°) Cohesive force Cu (kPa) Status Poisson- ratio μ Seam thickness /7section [m] Miscellaneous fill 3.5 10 4 Loose-Slightly dense 6.20 Silty clay 6.8 16 30 Plastic 0.32 4.45 Strongly weathered slate (120) 30 60 Very soft rock 0.26 5.45 Weathered slate 3000* 32 75 Soft rock - softer rock 0.23 11.30 Slate breeze 5000* 37 400 Softer rock 0.20 10.40 Note: the data showed in brackets was deformation modulus, and the data with “*” was elastic modulus Monitoring results. 1) Buildings settlements The monitoring results are shown in Figure 1, 2, 3, from which we can deduce: A.
Online since: April 2008
Authors: Yong Tang Li, Shi Wen Du
When designing hydraulic valve, prototype performances test is done on computer with the
computational hydrodynamics method .The properties of hydraulic valve and negative phenomena
which are derived from internal flow, such as vortex flow, secondary flow, boundary layer
separation, wake, noise can be predicted in drawing design stage.
If not, it will affect the blow frequency of electrical-hydraulic hammer
However, in consideration of such factors as the symmetry characteristics of mobile and computing time and the feasibility it can be approximated two-dimensional flow. 4) No the axial velocity component. 0 x y zf f f= = = , xf , yf , zf represent mass unit components along x , y , z axis; 5) Incompressible fluid 6) Flow is steady flow, and velocity does not change with time. 7) Fully developed laminar flow 2.2Basic equations The fluid inside hydraulic valve is incompressible viscous fluid.
Measurement on Pressure Distribution of Non-Circular Opening Spool Valve, Chinese Journal of Mechanical Engineering.
If not, it will affect the blow frequency of electrical-hydraulic hammer
However, in consideration of such factors as the symmetry characteristics of mobile and computing time and the feasibility it can be approximated two-dimensional flow. 4) No the axial velocity component. 0 x y zf f f= = = , xf , yf , zf represent mass unit components along x , y , z axis; 5) Incompressible fluid 6) Flow is steady flow, and velocity does not change with time. 7) Fully developed laminar flow 2.2Basic equations The fluid inside hydraulic valve is incompressible viscous fluid.
Measurement on Pressure Distribution of Non-Circular Opening Spool Valve, Chinese Journal of Mechanical Engineering.
Online since: August 2011
Authors: Yang Xue, Hai Yan Zhuang, Hui Zhi Li
The experimental parameters that affect the extraction effi{TTP}-1279
ciency of Pb ions from aqueous samples were evaluated and optimized.
The hard bulk polymer was grounded in a mechanical mortar and wet-sieved to 30 -80 μm particle size.
In order to optimize conditions for obtaining high effi{TTP}-1277 ciency in preconcentration of neodymium ions by the proposed IIP, it is necessary to adjust several factors including nature and volume of eluent, pH, weight of polymer, preconcentration and elution time.
The detection limit was 1.6 µg L−1.These results indicated the suitability of the Pb–DHCB imprinted polymer for selective SPE and determination of Pb2+ in environmental water Table 3 Recovery studies of trace Pb(Ⅱ{TTP}8545 ) determination in various real samples(n=6) Sample Added /[µg L-1] Found /[µg L-1] R.S.D /[%] Recovery /[%] Waste water Huang River water Drinking water 0 60 0 60 0 60 34.8 92.0 12.3 75.9 5.8 68.7 2.83 2.89 3.11 3.96 2.12 3.89 96.9 98.3 104.8 Conclusion The study above indicated that the synthesized Pb2+-IIP had stable chemical properties, firmly rigid configuration, relatively strong templet affinity and quite good selectivity.
The hard bulk polymer was grounded in a mechanical mortar and wet-sieved to 30 -80 μm particle size.
In order to optimize conditions for obtaining high effi{TTP}-1277 ciency in preconcentration of neodymium ions by the proposed IIP, it is necessary to adjust several factors including nature and volume of eluent, pH, weight of polymer, preconcentration and elution time.
The detection limit was 1.6 µg L−1.These results indicated the suitability of the Pb–DHCB imprinted polymer for selective SPE and determination of Pb2+ in environmental water Table 3 Recovery studies of trace Pb(Ⅱ{TTP}8545 ) determination in various real samples(n=6) Sample Added /[µg L-1] Found /[µg L-1] R.S.D /[%] Recovery /[%] Waste water Huang River water Drinking water 0 60 0 60 0 60 34.8 92.0 12.3 75.9 5.8 68.7 2.83 2.89 3.11 3.96 2.12 3.89 96.9 98.3 104.8 Conclusion The study above indicated that the synthesized Pb2+-IIP had stable chemical properties, firmly rigid configuration, relatively strong templet affinity and quite good selectivity.
Online since: April 2014
Authors: Li Tian, Xiao Wei Liu, Shang Yu Liu, He Zhang, Xiao Wei Han
Because of the development of micro-electro-mechanical system (MEMS) technology and the increasing need for integration, the electrokinetic microfluidics has tended toward the multilayer devices.
But several roadblocks preclude the widely application of them such as the complex fabrication process and friable properties.
By the research of von Smoluchowski and Rice, there are several factors would affect the electroosmotic flow velocity include: solid surface Zeta potential, dissolved fluid medium viscosity, dielectric constant, the electric field strength and so on [20-21].
But several roadblocks preclude the widely application of them such as the complex fabrication process and friable properties.
By the research of von Smoluchowski and Rice, there are several factors would affect the electroosmotic flow velocity include: solid surface Zeta potential, dissolved fluid medium viscosity, dielectric constant, the electric field strength and so on [20-21].
Online since: October 2010
Authors: Gui Xiong Liu, Xiao Bin Hong, Jian Long Xu
Dynamic Interpretation Method of XML Configuration Strategy for IP
Mode Measurement and Control System
Xiaobin HONG a, Guixiong LIU
b, Jianlong XU
c
The Department of Mechanical & Automobile Engineering, South China University of Technology,
Guangzhou, Guangdong 510640, China
a
mexbhong@scut.edu.cn, bmegxliu@scut.edu.cn,
cxujianlong@126.com
Keywords: XML, Configuration strategy, DOM, IMMCS
Abstract.
Differently, many factors should be considered in the transformation for the component logic relationship, because the performance of same logic relationship has various implementation scheme.
Save property information of CMCS i++ Childnode is DataSources?
When executing strategy dynamically, each equipment's variable is picked up from EquipMap to check its type property, in order to ensure whether the equipment needs to be calculated.
All the equipments' variables are scanned to ensure whether the current equipment's value is affected by the active sensor.
Differently, many factors should be considered in the transformation for the component logic relationship, because the performance of same logic relationship has various implementation scheme.
Save property information of CMCS i++ Childnode is DataSources?
When executing strategy dynamically, each equipment's variable is picked up from EquipMap to check its type property, in order to ensure whether the equipment needs to be calculated.
All the equipments' variables are scanned to ensure whether the current equipment's value is affected by the active sensor.
Online since: April 2012
Authors: Yang Qiao, Xiao Qin Wang, Xiu Li Fu, Yong Zhi Pan
Experimental Study on Wear-resistance of machined surface
in High Speed Milling Aviation Aluminum Alloy
Xiuli FU 1, a, Xiaoqin WANG 1, b, Yongzhi PAN 1,c and Yang QIAO 1,d
1Department of Mechanical Engineering, University of Jinan, China
ame_fuxl@ujn.edu.cn, bme_wangxq@ujn.edu.cn, cme_panyz@ujn.edu.cn, dme_qiaoy@ujn.edu.cn
Keywords: Aluminum Alloy 7050; Wear Quantity; Friction Coefficient; Wear-resistance
Abstract.
The wear-resistance performance of machined surface is an important factor in the evaluation of surface quality and precision in aerospace manufacturing industry.
These results indicated [7, 8] the work hardening, surface roughness and residual stress in different machining conditions had significant effect on wear-resistance properties of machined surface.
Material Property In aerospace industry aluminum alloy 7050-T7451 was usually fabricated into large-scale integrated frame parts with thin-walled and complicated structures.
The results demonstrated that wear-resistance can be directly affected by work-hardening, and the higher of degree of work hardening is, the better its wear-resistance is.
The wear-resistance performance of machined surface is an important factor in the evaluation of surface quality and precision in aerospace manufacturing industry.
These results indicated [7, 8] the work hardening, surface roughness and residual stress in different machining conditions had significant effect on wear-resistance properties of machined surface.
Material Property In aerospace industry aluminum alloy 7050-T7451 was usually fabricated into large-scale integrated frame parts with thin-walled and complicated structures.
The results demonstrated that wear-resistance can be directly affected by work-hardening, and the higher of degree of work hardening is, the better its wear-resistance is.