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Online since: June 2005
Authors: Sang Sik Jeong, Young Taek Lim, Byung Su Jung, Ki Won Kim
Introduction The linear PEO-LiX polymer electrolytes generally have some problems in lithium polymer battery--poor mechanical property, reactivity of lithium metal anode at high temperature and low ionic conductivity at low temperature.
In this case, particle size and content of ceramics play important roles as critical factors.
These polymers were applied to Li/S batteries, and their electrochemical properties and cyclic performance were investigated.
Al2O3 was added to investigate the effects of ceramic filler on electrochemical properties of a Li/S cell.
Summary In this study, we have presented the thermal and electrochemical properties of (PEO)6LiBF4-Al2O3 polymer electrolyte prepared by ball milling.
Online since: May 2014
Authors: Li Zhi Gu, Yan Hua Huang, Jian Tao Wang, Shao Kui Qu, Wei Wen Du
However, the processing surface stress state in the process of change will directly affect the physical integrity of the machined surface [6,7].
J-C simulation model parameters with related material Material A(Mpa) B(Mpa) n C m () 0.45% c Steel 553.1 600.8 0.234 0.013 1.00 1460 Finite Element Equation Model Selection It has a strong influence of the changes in the temperature and the microstructure of the cut material on the properties of it.
[3] Ai-jun CHEN.Analysis of dynamic stress intensity factors of three-point bend specimen containing crack [J].
China Mechanical Engineering, 2007, 18 (006):746 -751.
Beijing: Mechanical Industry Press, 1985.
Online since: October 2010
Authors: Li Min Ao, Yuan Sheng Zheng
For the selected metal type, the main effect factors of mechanical and physical properties and its functional durability of the coating fiber is not only the integrity of metal film, but also the metal deposition thickness of the fiber surface, that is the surface metallization of the metal content of the fiber [2].
Thus, fiber volume ratio of surface area will be some changes (fiber weight loss), the results reliability are affected, and therefore this method not practical in the actual production value.
Put the fiber into the cylinder; be sure to catch the bubble out, so as not to affect the test results.
Online since: November 2012
Authors: Xin Liao, Chun Ping Liu, Yun Shi, Yan Dong Tang, Fei Wan, Xiang Dong Bai
Mechanical anisotropy of aquifer also affects the well tide.
In this paper, a case study using data observed in the Chuan06 well was presented to analysis, so as to study the influence of the tidal drainage effect on well tide and explore the relation between the tidal hydraulic response and its influencing factors.
So, M2 and O1 tidal constituents was chosen to analyze to avoid the affect of barometric tide, and highlighting the response of water level to the earth tide.
Hsieh (1991), The estimation of fluid flow properties from the response of water levels in wells to the combined atmospheric and Earth tide forces, Water Resour.
Online since: June 2010
Authors: Xiu Jun Li, Yun Peng Chen
The Characteristics of DR Materials and Production Process Generally speaking, Mechanical Properties of DR material depends on many factors including steel making, hot rolling and cold rolling process and so on, especially the annealing and rolling schedule is very important for cold rolling strip.
At same time, the strip surface defects such as water marks thus affect significantly the surface quality of strip products.
During the process of double cold reduction rolling, the roller surface temperature increase gradually to form a certain amount of roll crown due to the metal deformation[2], and it would produce a certain thermal profile, which would affect the strip flatness in a certain degree, so the roll must be cool down effectively.
Online since: December 2011
Authors: Karel Jandečka
CSc Department of Machining Technology, Faculty o Mechanical Engineering, UWB in Pilsen, Univerzitní 8, 306 14, Plzeň, ČR, jandecka@kto.zcu.cz Keywords: grinding, surface shape, CAD / CAM software Cimatron, technological module, postprocessor, the NC program Abstract.
The most dynamic development took place during the First Republic, which affected a number of affiliates in Europe and worldwide.
Solutions of the dependence of the undercutting of helical (screw) grooves based on the grinding wheel diameter, its thickness and depth of cut: Grinding shaped grooves on these instruments is affected by both the geometry and the properties of the helix, and the dimensional parameters of the instrument.
We are currently working to adjust the numerical model, respectively, its specification and the inclusion of other factors.
Online since: October 2020
Authors: Mauricio David Martins das Neves, Renato Paulo Rezende
The samples were prepared by metallography and characterized using optical microscopy (OM), scanning electron microscopy (SEM) and mechanical microhardness test.
During the brazing process, the precipitates present in Inconel 718 concentrate in the region of the joint which causes a decrease in mechanical resistance [1,2].
The mechanical strength of the brazed joint is affected by the size of the joint gap inversely proportional.
However, a negative effect is that some brittle intermetallic compounds are generated and decrease the mechanical properties [5].
The brazing quality is influenced by many factors, including brazing temperature, filler metal thickness, holding time, cooling rate, and others.
Online since: August 2009
Authors: Gui Ming Chen, Jian Xun Yao, Shao Chun Hua, Liu Ying Wang, Gu Liu
The tribological properties of the surface hardened layer and untreated substrate were investigated using a block-on-ring tribometer sliding against GCr15 steel under unlubricated condition.
Introduction Surface properties are often a decisive factor affecting the performance and service life of a workpiece, and there are various kinds of surface treatment techniques for structural materials.
The geometric characteristics of melted and heat affected zones were studied as a function of working parameters.
When the two previously unworn material surfaces are first brought into contact, mechanical, thermal, chemical and microstructure changes begin to occur in and adjacent to the contact interface.
Martensite formed in the surface hardened layer has the properties of high hardness, fine grain size inherited from the substrate and severe dislocation.
Online since: September 2016
Authors: Murugasan Pradeep Kumar, S. Sriram, K.S. Vijay Sekar, V. Vignesh
AISI 1045 steel is known for its good weldability, machinability, high strength and impact properties in both the normalized and hot rolled condition.
Table 1 shows mechanical properties AISI 1045 steelPhysical PropertiesMechanical Properties Machining AISI 1045 steel has good machinability in normalized as well as the hot rolled condition.
Table 1 Mechanical properties of AISI 1045 steel MECHANICAL PROPERTIES METRIC Hardness, Brinell 163 BHN Tensile Strength, Ultimate 565 MPa Tensile Strength, Yield 310 MPa Modulus of Elasticity (Typical for steel) 200 GPa Bulk Modulus (Typical for steel) 140 GPa Physical Properties Mechanical Properties Machining AISI 1045 steel has good machinability in normalized as well as the hot rolled condition.
It was found that friction modelling affects thrust force and temperature more than cutting force.
One of the most important factors to influence the prediction of strain is the material model that is being used.
Online since: June 2014
Authors: Zhi Jian Peng, Jun Biao Peng, Lin Feng Lan, Lei Wang, Ju Sheng Ma, Hong Long Ning
But the values of normal equilibrium reaction condition and the real interface reaction brazing system were different; and the main influential factor was the brazing temperature, and the system vacuum of brazing condition can lead the change of equilibrium constant (Kα).
Introduction It was well-known that alumina ceramic played an important role in electronic industry because of its superior physical, chemical, mechanical and optical properties.
Feng, Interlayer design to control interfacial microstructure and improve mechanical properties of active brazed Invar/SiO2–BN joint, Materials Science and Engineering: A. 575 (2013) 199-205
Tsao, Microstructural characterization and mechanical properties of microplasma oxidized TiO2/Ti joints soldered using Sn3.5Ag4Ti(Ce) active filler; Journal of Materials Science, Materials in Electronics. 25 (2014) 233-243
Lin, Effect of Brazing Conditions on Microstructure and Mechanical Properties of Al2O3/Ti–6Al–4V Alloy Joints Reinforced by TiB Whiskers, Journal of Materials Science & Technology. 29 (2013) 961-970
Showing 19071 to 19080 of 25965 items