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Online since: January 2012
Authors: Robert Schaller, Daniele Mari, Iva Tkalcec-Vaju, Ann Kathrin Maier
Introduction The mechanical properties of solids depend strongly on their microstructure: point defects, dislocations, grain boundaries (GBs).
It has been shown that the Zener peak is a good probe to observe the order-disorder transition [14], which conditions the mechanical properties of these alloys.
The broadening factor β that corresponds to the width of the log-normal distribution of different relaxation times is found to be β= 0.5 for the Zener peak.
More precisely, the low temperature side of the peak undergoes a significant amplitude dependence whereas the high temperature side is not affected.
The mechanical loss tanf can be calculated from equations (1) to (4): (5) with (6) Plots of the theoretical mechanical loss spectrum have been drawn in Fig. 7.
Online since: August 2021
Authors: Vladimir I. Kuz'min, Evgeniy V. Kuz’min, Vladimir I. Lysak
Gurulev, Effect of plastic deformation on the structure and properties of laminated composite materials, Welding International. 16 (2002) 890-893
Gulenc, Investigation of interface properties and weldability of aluminum and copper plates by explosive welding method, Materials and Design. 29 (2008) 275-278
Kharlamov, Effect of heat treatment on the structure and properties of steel-aluminum composite with diffusion barrier, The Physics of Metals and Metallography. 116 (2015) 1096-1102
Nobili, Aluminum-steel electric transition joints, effects of temperature and time upon mechanical properties, Light Metals (The Minerals, Metals, & Materials Society). (2002) 439-445
Arisova, Structure and properties of explosion welded composites from steels of different kinds, Metal Science and Heat Treatment. 46 (2004) 167-169
Online since: January 2025
Authors: Gökhan Haydarlar, Mesut Tekkalmaz, Mehmet Alper Sofuoğlu
When these studies are examined, it is clear that workpiece and insert material properties, cutting conditions, and process parameter differences affect the residual stress results.
Key variables affecting residual stress are identified as friction coefficient, tool edge radius, and cutting speed.
Properties of materials used in simulation studies [25-26,28-32].
Material properties of insert and coating [25-26,28-32].
Despite these factors, the small percentage gaps suggest that the simulations are still highly reliable.
Online since: October 2012
Authors: Bei Qing Huang, Xian Fu Wei, Ling Ya Gu, Xiao Yang, Wen Ya Liu
It is the guarantee of obtaining high-quality prints to maintain the stability,uniform and appropriate of the ink transmission and merastasis.As a key technology that ink transfer affecting print quality will attract people's attention increasingly.
There are many factors what can affect the ink transfer, such as printing substrates, printing pressure,printing pressure and so on.
As a matter of fact, the ink performance is also an important factor, however, there are no so many researches about it.
With the influence of different factors, the ink-transferring ratio will decrease when the proportion of viscosity reducer is more than 6%.
Feng: Journal of Henan Mechanical and Electrical Higher Professional School, (2008)No. 6
Online since: September 2011
Authors: Raushan Zhilisbayeva, Nataliya Mokeeva, Zulhair Mansurov
According to theoretical consideration of metallurgists’ protective clothes reliability increase problem all the major questions, connected with obtaining of new kinds of composite materials and their properties regulated by special requirements, were experimentally studied.
There is suggested a formation of new fireproofed fabrics, which have high protective properties to the melted drops of metal, injuring the special cloth of the metallurgist.
The raw materials available for us may be used in the most efficient way by combination of different types and properties of thermal-resistant and heat-resistant threads in an appropriate composition which meets the established requirements.
If to consider the issue of the metallurgist’s clothes fire proofness from the point of view of in-service reliability, it was discovered that the most significant factor, affecting the worker’s clothes, was high adhesion of the melted metal particles to the metal surface with its subsequent burning.
When solving the task of elimination of the fabric surface damages caused by the melted metals splashes, it is necessary to consider the thermophysical processes of mass and heat transfer at the fabrics taking into consideration the specific properties of the components.
Online since: June 2012
Authors: Wen Hui Liu, Zhi Gang Chen, Hou Cai Liu, Zhen Sheng Wang, Zhen Hua Chen
So far, more attentions have been paid on the microstructure and mechanical properties of the spray deposited materials.
Investigating the size and distribution of the over-sprayed poeder will be helpful to analyze the microstructure characteristics of the deposits so as to determine their effects on mechanical properties[5].
It can be seen that there existed some smaller pores and atomized particulates in the spray deposited preform, which is bound to affect the mechanical properties of the current materials.
However, the subsequent cooling rate during deposition plays an important role which finally determines the microstructure and mechanical properties of the obtained materials.
Meanwhile, a too high temperature should be limited so as to maintain the RS microstructure and mechanical properties.
Online since: November 2011
Authors: Zhi Gang Wang, Ping Tan, Sui Chun Qu
The polar distance of TFSRM does not affect the location of the motor armature winding space, which provides wider freedom for designation.
,The factor of flux leakage can be minimized when the value of between 0.65-0.75, and the factor of flux leakage can be larger when the value of larger than 0.75 or smaller than 0.65 from Figure 5.
The change of gap lengtwill affect the output performance of the motor, the difficulty of processing and manufacturing costs.
Therefore, to got good magnetic properties, when design the motor, the air gap length should not be too large, but it can not be taken too small, so as not to increase the difficulty of machining and assembly of TFSRM.
Thus , the output power of motors , the torque ripple factors and motor manufacturing process required level should be taken into account when designed motors.
Online since: April 2013
Authors: Jazair Yahya Wira, Samion Syahrullail, W.N. Fawwaz, Wan Nik Wan Mohd Norsani
For each load, the tribological properties of RBD palm olein were compared with the properties of additive-free paraffinic mineral oil.
Following the completion of the wear test experiments, the ball wear condition and lubricant properties were observed.
There are several factors that affect the biodegradability of a substance, including the molecular structure, chemical properties and environmental conditions [1].
These oils all have excellent lubricating properties, load carrying capacities, and corrosion protection properties in comparison with mineral oil [3].
Conclusion RBD palm olein has better performance properties in terms of friction reduction (coefficient of friction) and wear resistance (anti-wear properties).
Online since: December 2010
Authors: Xi Liang Zhang, Li Juan Zhao, Ping Ping Li, Qing Yuan Sheng, Zhi Gang Liu, Yong Guang Hu
Considering the greater character differences between matrix and soil, and the great disparity in physicochemical properties of various substrate, now there is no special equipment to test matrix moisture, electrical conductivity (EC) and salinity of medium.
On the basis of analyzing physicochemical properties of various substrate, the relationship between output voltage and water content is studied through piezoelectric type soil moisture probe trial.
The substrate and soil are very different in physicochemical properties, and various substrate are quite differnt in physicochemical properties, therefore, the study on the matrix water content, electrical conductivity and the salinity in-situ detection and the related equipments are rare.
TDR can be used to measure the dielectric properties of material to calculate the soil volumetric water content according to the principle that the velocity of electromagnetic wave varies with the dielectric constant [3].
Furthermore, with the change of water content, the smaller the salt content, the greater the rate of electrical conductivity variation [5].With the determination of soil solution electrical conductivity and the analysis of the relevant factors, Lin Chengyi has pointed out that the electrical conductivity of soil solution is mainly affected by total salt content in soil and soil moisture.
Online since: August 2018
Authors: Thawatchai Plookphol, Nipon Denmud
Among the Sn-Ag-Cu solder alloy family, SAC305 solder powder has been accepted as the most promising and used instead of tin-lead solder alloy due to its relative low melting point, excellent mechanical properties and solderabilities [3].
For centrifugal atomization method, many processing parameters affect the liquid droplets.
One of the most crucial factors for energy transfer is wettability between the disk and the melt.
The results show that oxygen content in the chamber directly affected the amount of oxygen on the powder surface.
Suganuma, Effect of intermetallic compounds on properties of Sn-Ag-Cu lead-free soldered joint, J.
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