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Online since: December 2013
Authors: Huey Ling Chang, Chih Ming Chen
Effects of Nano-Silica Addition and Reactive Diluent Addition on Dynamic Mechanical Properties of Epoxy Nanocomposites Huey-Ling Chang1a*, Chih-Ming Chen2b 1 Department of Chemical and Materials Engineering, National Chin-Yi University of Technology, Taichung 41170, Taiwan, R.O.C. 2 Department of Mechanical Engineering, National Chin-Yi University of Technology, Taichung 41170, Taiwan, R.O.C.
Recently, new strategies have appeared utilizing nanoparticles to improve toughness and other mechanical properties [1].
Some researches demonstrated that using nanometer fillers can significantly improve thermal and mechanical properties [3, 4].
The silicon dioxide powder can enhance many properties [5, 6].
The trapped solvent will affect the properties of the nanocomposites after curing.
Online since: December 2010
Authors: Xin Tang Wang, Wan Zhen Wang, Ming Zhou
The fire behavior of the planar pre-stressed tubular steel trusses in which two cables are set is analyzed with the model presented here and the effect law of different factors on the bearing capacity of the structures in fire are discussed.
Introduction Pre-stressed steel structures with better mechanical behavior is a kind of special structures which has been widely used in practical engineering [1], but its overall performance will change greatly when fire happens because of its speciality.
The fire response and thermal expansion effect of the structure resulting from the change of material properties are considered in the model.
The effect law of different factors on behavior of the whole structures are discussed by analysis of bearing capacity of the pre-stressed steel trusses with two plans of cable-setting in fire.
(5) wherestands for the reduction factor, is elastic modulus of steel cable at room temperature.
Online since: May 2015
Authors: Emil Spišák, Branislav Duleba, Ivan Gajdoš
The properties of semicrystalline polymers, such as PPS, depend on its crystallization behavior [1].
Experimental part DSC / TGA analysis was performed to indirectly assess the degree of crystallinity as an important factor affecting the final mechanical properties of the PPS.
One of the factors that mostly influence the degree of crystallinity is the mold temperature into the melt PPS is injected, respectively the temperature at which crystallization takes place.
Studies dealing with the characteristics of PPS found that the degree of crystallinity affects inversely proportional to the strength properties of PPS-glass composite and that the morphology of spherulite is an important factor.
Brady, The crystallinity of poly(phenylene sulfide) and its effect on polymer properties J.
Online since: February 2014
Authors: Ye Shen He, Xi Hong Zhang, Li Hua Liang
Introduction Power line carrier communication isone kind of communications that makes use of power line to transferthe data, voice, media and other signals.Power line carrier communication technology has the properties of high economic value, universality and practicability.With the rapid development of power electronics technology,switching power supply is widely used in power line communication equipment.
Factors of switching power supply affect the power line communication Phase noise.The main factor that influences the performance of broadband power line communication is the physical layer modulation technique which is used as the core chip of power line communication equipment.
Phase noise and electromagnetic interference are the main factors, affecting power line communication by the switching power supply.The follows in the passage mainly analyzethe influence between the phase noise, electromagnetic interference of the switching power supply and the power line carrier communication.
Beijing: mechanical industry publishing house, 2006
Beijing: mechanical industry publishing house, 2005
Online since: September 2005
Authors: Henry Prask, R.E. Ricker, Vladimir Luzin, Thomas Gnäupel-Herold, S. Banovic
Measurement and Calculation of Elastic Properties In Low Carbon Steel Sheet V.
The magnitude of the springback depends on elasto-plastic properties of the metal, parameters of the forming process and geometrical factors, such as shape, metal sheet thickness, etc.
However, many features must be taken into account such as stresses/strain evolution, texture development, changes in the plastic properties, etc.In response to these needs, NIST has carried out a comprehensive program to develop standard mechanical test and measurement methods for characterization of the properties related to formability of metals and springback, as described in [1].
Four-point bending measurement accuracy can be affected by internal friction in the instrument.
Among calculation schemes, neutron texture analysis provides a good average (global) estimate of elastic properties.
Online since: October 2023
Authors: Karel Dvořák, Dorothea Sklenářová
It was already observed that the different composition and structure of a raw material influence the transformation process and has effects on the chemical and mechanical properties of the formed lime.
This study is focused on the characterization of the raw material (porosity, chemical composition, geological age and origin) and its effect on the burning process and the formation of CaO and its properties.
Even two mineral samples obtained from apparently the same quarry/location can have very different physical and chemical properties, as they were formed differently [1].
This high industrial need have a heavy environmental impact of a high carbon footprint, which in this century is one of the important factors in the industry.
The properties of the input material and how it affects the transformation process and the parameters of the product material, is the main objective of this study.
Online since: July 2022
Authors: Samir Allaoui, Rym Azzouz
The composite materials are high on demand in various applications, because of the wide range of properties that they offer.
One of the major factors that influence the outcome of the pre-forming is the geometry type.
Lower density generates local weaknesses in terms of the mechanical properties contrary to the increase in the density, which is desirable.
Based on that, the density decrease percentages are measured, because it creates local weaknesses in terms of the mechanical properties.
As an out-of-plane defect, the outcome will alter the thickness of the fabric leading to a change in the mechanical properties.
Online since: July 2011
Authors: Yi Luo, Chun Tian Li, Chang Hua Du, Hui Bin Xu
On the other hand, in the actual welding process, the system is inevitably affected by interference from external factors, such as the surface of the work pieces is uneven near the zone of weld joint, the instability of the operation, small changes in speed of wire feed, the voltage fluctuations from grid and other factors, might cause damage to the static equilibrium, so, which requires the system, after the disappearance of interference factors from the outside world, can automatically recover or reach a new static equilibrium, making re-welding process parameters to restore and maintain stability.[2][3] The static model of the system Without interference from external factors, if the system can ensure the arc's continuous and stable combustion in a given parameter based on welding process, and maintain the system's static equilibrium, the electrical characteristics of the system should have the following relationship: (1)
Beijing: Mechanical Industry Press, 2007.35-36
Beijing: Mechanical Industry Press, 2004.4-30
Beijing: Mechanical Industry Press, 2000. 5-25, 35-44
Mironov, Effect of the secondary current lead resistances on the properties of an arc steel-melting furnace as a receiver and transformer of electric power.
Online since: March 2015
Authors: Yan Li, Jian Can Yang, Zhen Liu
The mechanical properties of these welded joints were investigated.
The loss of rare earth oxides of electrode had little effect on the mechanical properties of welded joints.
From Table 5, it can be seen that the mechanical properties of the three specimens are close.
Therefore, the loss of rare earth oxides had little effect on the mechanical properties of welded joints.
The loss of rare earth oxides of electrode had little effect on the mechanical properties of welded joints.
Online since: May 2020
Authors: Yuri N. Goikhenberg, Radii V. Sprikut, Alexander N. Maznichevsky
Mechanical properties conducted after quenching at two temperatures in water.
The analysis of the mechanical properties at room temperature showed that nitrogen alloying increase in strength of pilot steel at sufficiently high values of plastic properties (see Table 2).
Mechanical properties and technological plasticity of middle-nitrogen steel 1 - AISI 304L; 2 - 03Cr18Ni11Mn1N0.16; 3 - 03Cr20Ni9Mn3N0.30; 4 - 03Cr20Ni9Mn3N0.27 Fig. 5.
Speidel, Properties and applications of high nitrogen steels.
Speidel, Properties of high nitrogen steels.
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