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Online since: November 2011
Authors: Yan Feng Wang, Chang Ming Qiu, Li Deng, Xiao Hua Sun
Test the mechanical properties.
Figure 2 and figure 3 show the change of mechanic properties with the deformation degree and diameter ratio.
Table 2 Data of rolling parameters and mechanical properties Diameter ratio i Sample NO.
Compare to deformation degree, the difference of diameter ratio can be neglected, if the deformation degree is quite high. 4) With the increase of deformation degree, the value of (σb-σs) becomes smaller, but the reduction is not so much, the hadfield steel still have good ductility after asynchronous rolling. 5) Compare the role of deformation degree with that of diameter ratio, the main factors affecting performance is deformation degree, the effect of diameter ratio is very little relatively.
(1) The deformation degree plays an important role on mechanical performances of hadfield steel.
Online since: August 2013
Authors: Han Jun, Yan He
This paper systematic analysis the factors which affect the feasibility of helicopter route from the point view of GIS.
The affecting factors will be divided into geographical and non-geographical influencing factors.
We can get various geographical factors which affect route planning from GIS, facilitate to analysis.
The non-geographic factors which can’t contain in the map of GIS, but could be load form database also are the important elements which affect helicopter flight.
The table 1 shows the factors which affect flight route planning.
Online since: January 2007
Authors: Paulo A.P. Wendhausen, Waldyr Ristow, Aline Silva, Ricardo Machado
Magnetic properties obtained for Fe-50Co alloy produced by MIM with elemental powders A.
Taking into account the above mentioned factors, was decided to analyze how the changes in chemical composition, by replacing pre-alloyed powders with the elemental powders, affect the processing and, more specifically, the sintering step and the final magnetic properties.
The presence of carbon could adversely affect the magnetic properties.
[2] SOURMAIL, T., Near equiatomic FeCo alloys: constitution, mechanical and magnetic properties, Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, (2003)
[5] SUNDAR, R.S., DEEVI, S.C, Influence of alloying elements on the mechanical properties of FeCo-V alloys, Chrysalis Technologies Incorporated, Richmond, VA, USA, (2004)
Online since: October 2013
Authors: Kai Yong Jiang, Jie Yan
Among them the titanium carbide reinforced copper matrix composites have been reported to show the good mechanical properties and high thermal conductivity [2].
The thermodynamics of powder system and the dynamic characteristics depart from the equilibrium properties.
With changes of the parameter represented by ball milling time and sintering temperature, the performance of the composite physical properties will be changed, especially electric conductivity properties.
There are many affection factors of the electric conductivity, such as the impurity content and the change of temperature and composition in solid solution and stress concentration etc.
The grinding affects the particle morphology.
Online since: October 2006
Authors: Joseph Langlais, Alain Lemieux
Mechanical Properties.
The mechanical properties at different SEED process conditions were demonstrated for the T5-temper condition.
The mechanical properties and particularly the ductility were significantly affected by the change in the SEED process parameters.
The latter are among other possible factors that could have introduced some variations and influenced the overall response of the material.
Typical range of mechanical properties for AA6061 alloy (SSF) UTS [MPa] YS [MPa] Elongation [%] Average 310-350 250-300 10-20 Table 3 shows the typical range of mechanical properties obtained from SSF parts of AA6061 alloy for different pouring temperatures and process conditions.
Online since: October 2016
Authors: Gang Zhao, Wen Long Song, Guang Li Zhang, Hong Shi Bi, Zhuang Zhi Sun
As a result, we found it presented various electromechanical properties under the preparation factors of the different additive glycerol (0mL, 2mL, 4mL).
Results and Discussion As can be shown in Figure 3, the content of additive can affect the film properties.
Electrochemical properties and actuation mechanisms of actuators using carbon nanotube-ionic liquid gel.
Effect of solvent mixture on properties and performance of electro-active paper made with regenerated cellulose.
Investigation into the actuating properties of ionic polymer metal composites using various electrolytes.
Online since: September 2011
Authors: Nenad Gubeljak, Jožef Predan, Vinko Močilnik
The rough criteria for distinguishing short crack (affected by notch root radius) and long crack in the notches with 60° angle has been proposed.
The mechanical properties are listed in Tab. 2.
Table 1 Chemical composition of spring steel Element C Si Mn Cr Ni Mo V Cu P S % wieght 0.44 0.28 0.56 0.87 1.41 0.26 0.11 0.12 0.009 0.002 Table 2 Mechanical properties of spring steel UTS Rm [MPa] Yield strength Rp0,2 [MPa] Torsion limit τe [MPa] Shear modulus G [GPa] Modulus E [GPa] Hardness HRc 2010 1570 800 75 193 52 - 55 Material for specimens were prepared at the same technological procedure as regular spring production.
Therefore, in order to compare equivalent stress intensity factors by using Eq.(1) we used only torque M5=238.67 Nm.
The rough criteria for distinguishing short crack (affected by notch root radius) and long crack in the notches with 60° angle has been proposed.
Online since: October 2015
Authors: Xu Dong Pan, Ye Li, Wei Jie Huo, Wen Dong Zhu
This paper presents the design of hydraulic locking mechanism based on material friction properties.
The strength, elasticity, temperature coefficient, and the factors such as friction coefficient are considered in the process of design.
We also consider the characteristics of different materials, and give a general design process according to the properties of the material.
The analysis of the effects of material properties to the locking mechanism design has a very important significance to practical applications.
Considering the machining errors, environmental differences and unstable factors such as friction properties, the actual size of interference quantity should be enlarged properly.
Online since: November 2010
Authors: Shi Wen Du, Hui Ping Qi, Yong Tang Li, Jian Jun Song
The mechanical response at the interface between the silicon, low-k, copper, and pad is simulated under the loading of the chemical mechanical polishing.
Using the model, the effects of applied down pressure, pad properties, status of slurry on the non-uniformity of the wafer surface can be readily evaluated.
Different CMP processes attempt to achieve a balance between removal rate and global/local planarization through a combination of solution chemistry speed, applied pressure and pad properties [1,2,3].
In spite of its apparent simplicity, CMP is a very complicated process in which both mechanical and chemical factors play an important role.
Using the model, the effects of applied down pressure, pad properties; status of slurry on the non-uniformity of the wafer surface can be readily evaluated.
Online since: April 2015
Authors: Libor Topolář, Peter Rypák, Kristýna Timcakova
The main drawback of this material is a high level of autogenous and especially drying shrinkage, which causes a deterioration of the mechanical properties.
Introduction Alkali activated aluminosilicate materials represent an alternative to ordinary Portland-cement based materials, reduce the impact of building industry on the environment and offering new superior properties.
Type and dosage of the activator as well as the way of curing have a significant effect on the hydration course and final mechanical properties [2].
The new measurements by Impact-echo method show the possibility of using this method to assess the degree of damage incurred during hardening mortars that affects the final properties of the material [6,7] Experimental part For research purposes we produced three sets of samples.
Day, Factors affecting early hydration characteristics of alkali-slag cements, Cem.
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