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Online since: October 2011
Authors: Ling Fang Xu, Qiu An Huang, Su Zhen Mei, Wei Ming Yang
Currently two factors of high cost and inadequate durability are hampering SOFC commercialization process.
It is of vital importance to build direct correlation between microstructure evolution and interface properties such as the interface bonding, interface porosity, interface conductivity and catalyst activity.
The interface properties derived from phase field theory model simulation not only determine polarization characteristics of MSC but also affect its durability.
(1) Firstly, based on phase field simulation, present work will attemp to reveal how external factors, such as gas pressure, gas atmosphere and operating temperature, and internal factors including substrate composition, anode composition, and interfacial morphology, together affect inter-diffusion and reaction on anode/substrate interface of MSC
Furthermore, polarization properties and long-term stability will be analyzed according to the above-mentioned diagnosis conclusions of interface phenomena
Online since: September 2013
Authors: Hong Wen Li
Analysis Of The Effect Of Environmental Factors On The Construction Phase Of The Project Hongwen Li1, a 1University of Science and Technology Liaoning, China aaszxk@126.com Keywords: Real estate development; Environmental impact assessment; Cost-benefit analysis; Environmental management Abstract.
Environmental impact assessment of construction period Sewage impact assessment Construction site sewage is mainly excavated foundation drainage, vehicles, equipment cleaning water, construction workers living sewage, the sewage containing sediment and suspended matter is extremely high, not handled properly, will affect the surrounding water environment.
The main factors of atmospheric pollution is NO2, CO, SO2 and dust, especially the dust pollution is the most serious.
Evaluation of the effects of noise pollution Including mechanical excavators, chainsaw, mechanical construction noise during the construction period, as long as there is a construction site will have a construction noise pollution, but is must do.
In addition, after the completion of the project to achieve certain benefits, construction project requires a large number of construction personnel, after the completion of repair, residential property management, engineering, business services and other aspects, need a large number of staff employment, income will change, will expand the scope of employment to a certain extent, have a beneficial effect to employment; engineering it will improve regional greening of the environment, improve the urban city image; good project construction, rich city humanities landscape; recreation projects supporting the construction of shopping malls, convenient, surrounding people live.
Online since: April 2016
Authors: Tomasz Machniewicz, Małgorzata Skorupa, Adam Korbel
A novel feature of the code is its calibration which involves a choice of the constraint factors based on a physical foundation.
A previous work (e.g. [9]) has revealed that the in order to adequately account for the above factors three different constraint factors according to Eq. 1 should be incorporated into the SY model.
The measured mechanical properties of the material were the following: ultimate strength 540 MPa, yield stress 398 MPa, elongation to failure 25% and cyclic yield stress 340 MPa.
Selection of the constraint factors: (a) computed and observed hysteresis loop; (b) constraint factors’ dependency on the stress ratio [12].
Constraint model in the overload-affected zone [13].
Online since: March 2021
Authors: Sami D. Salman, Adnan H. Rasheed, Hajar Alias
Thermophysical Properties for ZnO-Water Nanofluid: Experimental Study Adnan H.
The thermophysical properties, including viscosity and thermal conductivity, were measured by using Brookfield rotational Viscometer and Thermal Properties Analyzer, respectively.
The result indicates that the thermophysical properties of zinc oxide nanofluid increasing with nanoparticle volume fraction increasing, as well as the thermophysical properties of zinc oxide nanofluid affected by the change in temperature.
Journal Of Mechanical Engineering And Sciences. 2017 Dec 1; 11:3087-94
Thermophysical properties and stability of carbon nanostructures and metallic oxides nanofluids.
Online since: July 2015
Authors: Ji Hai Jiang, Yi Sun, Ze Bo Wang
Due to quick relative velocity, alternating load, numerous slippers, and high contact pressure between the friction surfaces, the wear-out and fatigue failure constantly occurs, which is one of the key factors affecting reliability of the piston pump.
Although researchers are aware of these two effect factors, there is no further quantitative comparison of the two.
Simultaneous temperature measurements of bearing and seal parts of a swash plate type axial piston pump - effects of piston clearance and fluid property[J].
Journal of Mechanical Science and Technology, 2010, (1): 203-206
Journal of Mechanical Engineering. 2010, 46(20): 161-168.
Online since: April 2023
Authors: Persia Ada N. de Yro, John Corvin A. Babaan, Kezia Mae P. Ortiz, Chelsea Mae Escutin, Madelaine L. Ebarvia
These differences would affect the cost, how quickly the object can be materialized, and would also affect the mechanical strength of the object.
Sezer and Eren in 2019[4] incorporated multiwall carbon nanotubes (MWCNT) in ABS in order to obtain a filament with improved mechanical and electrical properties.
The 3D-printed tensile test specimens were then subjected to universal testing machine (UTM) (Instron 5585H, USA) for mechanical properties determination.
Considering that the rest of the factors remains controlled and is considered to be constant, then the changes in the composition of the composite can be attributed to the changes in the peak intensities.
Coli and the 3 samples Mechanical Properties.
Online since: February 2011
Authors: Gang Wu, Chun Hua Zhao, Hong Ling Qin, Xin Ze Zhao
They found that the size, shape and content of the porogen in the molding mixture greatly affect the physical properties of the pores in the final porous sample.
The choice of the materials for the joint takes into consideration not only properties such as mechanical resistance, but also low friction coefficient and wear loss.
As we know, the mechanical strength is one of the factors that determine the tribological properties of material.
In dry wear condition, the coefficient of friction and wear loss were increased due to the decreased of mechanical properties.
Compare with that of UHMWPE sample, we attributed this change to the decrease of mechanical properties of porous UHMWPE.
Online since: February 2019
Authors: Esen Alp-Erbay, Ahmet Faruk Yeşi̇lsu, Mustafa Türe
Mechanical Properties The mechanical properties of the electrospun mats were determined by using a texture analyzer (TA.XT plus, Stable Micro Systems, UK) with a 5 kg load cell equipped with tensile grips holder.
Viscosity is one of the important factor affecting resultant fiber morphology due to configuration of polymer chain.
Relationship among fiber diameter, bioactive content and mechanical properties Mechanical properties of electrospun nanofibers mostly depend on fiber morphology which is affected by several parameters such as, conductivity, surface tension, polymer concentration, and viscosity.
Beaded fibers with thinner diameter exhibited lower mechanical properties similar to research done by [36].
Quadri, Spinnability, Morphology and Mechanical Properties of Gelatins with Different Bloom Index.
Online since: September 2013
Authors: Li Qing Fang, De Qing Guo, Yong Chao Chen, Lei Zhang
An analytical model of the monocrystal piezoelectric generator was established by using the mechanical vibration theory.
Then we studied the impact of the structural dimensions and material properties on the power generation performance.
The solution of displacement is (24) Speed is (25) Take static distributed load-deflection curve as the tentative formation function (26) According to the Rayleigh process (27) Simple calculation is (28) Numerical simulation analysis To visually illustrate the impact factors of the power generation performance of monocrystal piezoelectric generator, we analyzed the impact of the structural dimensions to power generation capacity in different substrate material conditions.
The change trend of the curve in the Figure shows that to the high Young's modulus of the substrate material, the thickness is a major factor affecting the amount of power generation.
[6] Zhang Yimin Mechanical Vibration [M] Beijing: Tsinghua University Press, 2007:187-18 In Chinese
Online since: June 2011
Authors: Cai Nian Jing, Ming Gang Wang, Qi Zhong Tan, Xiao Hui Chen
As we know that some processing parameters will affect the stress needed to move dislocations, thus determine the bake hardening properties.
Among them, the pre-straining, ageing temperature and holding time are the most important factors.
However, limited researches of cold-rolled CMnSi dual phase steel have worked on the bake hardening properties.
Therefore, the effect of pre-straining and ageing on bake hardening properties of dual phase steels was investigated in this paper.
It is believed that grain size and morphology of ferrite and martensite affect the mechanical properties of dual phase steel; these complex structures give the steel excellent combination of strength and ductility.
Showing 8581 to 8590 of 26166 items