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Online since: March 2013
Authors: K.H. Zhang, Biao Xu, Wen Bing Xie, Si Wei Zhang
Many literatures conducted in-depth analyses of abrasive flow rheology and the impacts of various factors on the effect of processing.
It has poor mobility, small metal adhesion properties, expresses as a typical high-viscosity non-Newtonian fluid.
Meng: Journal of Mechanical Transmission. 35 (2011), p. 45-47 [3] C.F.
HAN: Mechanical Engineer.
Li: Mechanical Management and development. 24 (2009), p. 82-83 [11] W.
It has poor mobility, small metal adhesion properties, expresses as a typical high-viscosity non-Newtonian fluid.
Meng: Journal of Mechanical Transmission. 35 (2011), p. 45-47 [3] C.F.
HAN: Mechanical Engineer.
Li: Mechanical Management and development. 24 (2009), p. 82-83 [11] W.
Online since: June 2020
Authors: Yoshikazu Todaka, Hirotaka Kato, Kouhei Yamashita
Introduction
Ultra-fine grained (UFG) metallic materials produced by severe plastic deformation (SPD) have attracted a growing interest owing to their superior mechanical properties without alloying [1,2].
Moreover, it is well known that sliding wear behavior is influenced considerably by not only the mechanical properties of the materials but also the adhesion to the counter material, which would be affected by the microstructure of the friction material.
Wear properties of HPT processed S45C carbon steel were investigated using a ball-on-disk friction method.
Results and Discussion Wear Properties.
Adhesion Properties.
Moreover, it is well known that sliding wear behavior is influenced considerably by not only the mechanical properties of the materials but also the adhesion to the counter material, which would be affected by the microstructure of the friction material.
Wear properties of HPT processed S45C carbon steel were investigated using a ball-on-disk friction method.
Results and Discussion Wear Properties.
Adhesion Properties.
Online since: December 2012
Authors: Jian Chao Zhan
Study on the properties of polyester fabric by Ni/Co/Fe multilayer electroless plating technology
Jianchao Zhan
College of Materials and Textile Engineering, University, Jiaxing, Zhejiang, 314001, China
zhan1jian2chao3 @163.com
Keywords: electroless plating; multilayer; microwave absorption;
Abstract.
Electroless nickel plating has been used in many industrial applications due to its outstanding deposition properties, such as excellent corrosion,wear resistance and deposit uniformity [3].
Results and discussion Surface morphology The surface morphology of metallic fabric may affect their electrical, mechanical, and optical properties.
Ni/Co/Fe-plated fabric f.Ni/Fe/Co-plated fabric Figure 1 Scanning electron microscopy image of plated Fabric Microwave Absorbing Properties of the plated fabric On the base of electroless plating techniques, we have plated Ni, Co and Co/Ni,Co/Fe,Ni/Co/Fe and Ni/Fe/Co on PET fabric respectively,which parameters are listed in Table2 and the microwave absorbing properties of plated fabric was tested by the Vector network analyzer -R/SZVL6,which are shown in Figure 2.
The type, content and distribution of metal particles are also the important factor for microwave absorbing properties of plated fabric. 3.The handle of plated fabric is positive correlation to the surface density of which.
Electroless nickel plating has been used in many industrial applications due to its outstanding deposition properties, such as excellent corrosion,wear resistance and deposit uniformity [3].
Results and discussion Surface morphology The surface morphology of metallic fabric may affect their electrical, mechanical, and optical properties.
Ni/Co/Fe-plated fabric f.Ni/Fe/Co-plated fabric Figure 1 Scanning electron microscopy image of plated Fabric Microwave Absorbing Properties of the plated fabric On the base of electroless plating techniques, we have plated Ni, Co and Co/Ni,Co/Fe,Ni/Co/Fe and Ni/Fe/Co on PET fabric respectively,which parameters are listed in Table2 and the microwave absorbing properties of plated fabric was tested by the Vector network analyzer -R/SZVL6,which are shown in Figure 2.
The type, content and distribution of metal particles are also the important factor for microwave absorbing properties of plated fabric. 3.The handle of plated fabric is positive correlation to the surface density of which.
Online since: May 2014
Authors: Hong Yan Zhou
Technical parameters of FieldSpec Pro
Spectral range
350-2500nm
Sampling interval
1nm
Spectral resolution
3nm for 350-1000nm, 10nm for 1000-2500nm
Output number of bands
2150
FOV
10
Hyperion data preprocessing.Surface radiation arriving sensor is a complex process influenced by many factors, including the biophysical properties of the ground, the surface roughness geometry, observation and light exposure, atmospheric conditions and other factors, so the data cannot be directly reflected Hyperion feature reflectance information, and the process of acquiring the image due to some mechanical reasons may also cause some degree of distortion of the data [2].
Image noise is affected by the water vapor band,cannotshow the information of surface.
Delete severely affected by the water vapor bands 35.
Image noise is affected by the water vapor band,cannotshow the information of surface.
Delete severely affected by the water vapor bands 35.
Online since: February 2015
Authors: Zhao Hui Huang, Zhen Ya Chen
Introduction
Density logging, or gamma-gamma logging, scattered gamma ray logging is logging method using Compton scattering, which is mainly used to identify lithology, porosity calculation, computing flexibility and mechanical parameters of the rock formations.
In ideal condition, gamma ray effects only in strata and then output pure stratigraphic interpretation, so density logging is the direct reaction of formation properties.
However, usually, the underground condition is always complicated; data of density logging is highly affected by environment like the gap between instruments and the wall, the nature and gravity of mud, mud cake, debris, mud invasion, etc.
Model these factors in lab rather than fulfill the wish of revealing the underground situation, a huge burden of set the lab up cannot be afford.
Setting a suitable cut-off, combined with environmental factors density logging features, build optimization models.
In ideal condition, gamma ray effects only in strata and then output pure stratigraphic interpretation, so density logging is the direct reaction of formation properties.
However, usually, the underground condition is always complicated; data of density logging is highly affected by environment like the gap between instruments and the wall, the nature and gravity of mud, mud cake, debris, mud invasion, etc.
Model these factors in lab rather than fulfill the wish of revealing the underground situation, a huge burden of set the lab up cannot be afford.
Setting a suitable cut-off, combined with environmental factors density logging features, build optimization models.
Online since: February 2012
Authors: Hua Qing Lai
Pham and Colton [2] developed an ejection force model by combining the effects of thermal shrinkage and mechanical interlocking due to stair-steps on the surface of SL tools.
Palmer and Colton [3] studied the design rules for stereolithography tooling, the study indicates that draft angle is one of the critical factors that contribute to mold life and by increasing the draft angle, more parts can be made before the tool failure.
Mold feature geometry is another issue that directly affects the number of quality parts that a mold can produce.
The inputs required to simulate the process were the molding conditions and mold material properties.
Conclusion The stereolithography tooling life not only depends upon factors such as material and processing conditions, it also depends on the geometrical features of the mold.
Palmer and Colton [3] studied the design rules for stereolithography tooling, the study indicates that draft angle is one of the critical factors that contribute to mold life and by increasing the draft angle, more parts can be made before the tool failure.
Mold feature geometry is another issue that directly affects the number of quality parts that a mold can produce.
The inputs required to simulate the process were the molding conditions and mold material properties.
Conclusion The stereolithography tooling life not only depends upon factors such as material and processing conditions, it also depends on the geometrical features of the mold.
Online since: January 2014
Authors: Rui Cheng Feng, Guo Tao Zhang, Zhi Yuan Rui, Chang Feng Yan
Besides, the following assumption is put forth as the basis of the discussion: interstitial atom is just affected by those atoms which surround the interstitial atom and locate in the lattice.
In order to simplify the discussion, the analysis for force will be taken in one lattice and other factors except for Coulomb force will be neglected.
Generally speaking, the atom which locates in the gap position of lattice(be called interstitial atom) will be affected by lattice atoms which surround the interstitial atom at the same time.
As is well known that pure metal is made up of the stacking of lattice and temperature also plays a vital role in the performance of metal, so those factors should be taken into consideration in the future study to get more accurate results.
Averback:The role of self-interstitial atoms on the high temperature properties of metals, Phys.
In order to simplify the discussion, the analysis for force will be taken in one lattice and other factors except for Coulomb force will be neglected.
Generally speaking, the atom which locates in the gap position of lattice(be called interstitial atom) will be affected by lattice atoms which surround the interstitial atom at the same time.
As is well known that pure metal is made up of the stacking of lattice and temperature also plays a vital role in the performance of metal, so those factors should be taken into consideration in the future study to get more accurate results.
Averback:The role of self-interstitial atoms on the high temperature properties of metals, Phys.
Online since: August 2013
Authors: Tao Chen, Song Li, Yang Du
The river is a strong tidal river, affected by the Yellow Sea half-day tidal and seawater flows backward all year.
But the construction of the vacuum in the stability and control of transfer efficiency requirements are strict and affect directly the desired effect.
Considering the river water level, water level of face side, opening gate in flood season, 8 degrees seismic and other factors, and vertical load of wing wall foundation pile is little difference, so the design uses the maximum load (Pmax=561.73KN) as design basis of pile length.
Considering the river water level, water level of face side, opening gate in flood season, 8 degrees seismic and other factors, the maximum horizontal load of single pile under the wing wall is 146.60KN.
Physical and mechanical properties of marine soft soil are complex.
But the construction of the vacuum in the stability and control of transfer efficiency requirements are strict and affect directly the desired effect.
Considering the river water level, water level of face side, opening gate in flood season, 8 degrees seismic and other factors, and vertical load of wing wall foundation pile is little difference, so the design uses the maximum load (Pmax=561.73KN) as design basis of pile length.
Considering the river water level, water level of face side, opening gate in flood season, 8 degrees seismic and other factors, the maximum horizontal load of single pile under the wing wall is 146.60KN.
Physical and mechanical properties of marine soft soil are complex.
Online since: March 2016
Authors: Xin Li, Hong Na Fan, Shu Xin Niu, Xiao Guang Liu, Jian Sheng Yao
A ceramic core with very precise and complex shapes must have excellent properties such as dimensional conformity, mechanical strength, thermal shock resistance, thermal stability, chemical inertness against the super alloy, enough mechanical weakness to prevent the generation of cracks or recrystallizations in the single crystal blades.
The effect of mullite fibers on the properties and microstructure of fused silica-based ceramic core material, including flexural strength and leachability, have been investigated.
Another factor was cristobalite content of ceramic core after sintering.
Conclusions In this work, effects of mullite fiber content on microstructure and properties of fused silica –based ceramic cores had been investigated.
[6] Rui Zhang, Yexia Qin, Pan Wei, Influence of Al2O3 fiber on the properties Al2O3-based Ceramic core, Rare metal Materials and Engineering, 36(2007),675-677
The effect of mullite fibers on the properties and microstructure of fused silica-based ceramic core material, including flexural strength and leachability, have been investigated.
Another factor was cristobalite content of ceramic core after sintering.
Conclusions In this work, effects of mullite fiber content on microstructure and properties of fused silica –based ceramic cores had been investigated.
[6] Rui Zhang, Yexia Qin, Pan Wei, Influence of Al2O3 fiber on the properties Al2O3-based Ceramic core, Rare metal Materials and Engineering, 36(2007),675-677
Online since: April 2019
Authors: Fred J. Davis, Geoffrey R. Mitchell, Spiridon Koutsonas
Degradation refers to the irreversible process by which an organic precursor deteriorates due to different external factors such as thermal, mechanical, light, or microwave treatment.
The microwave power absorption on the irradiated materials is predominantly affected by dielectric properties, which are changed by the material temperature.
Therefore microwave power absorption of the irradiated PAN material can affect its dielectric properties, static electrical conductivity as reported by Koutsonas [11] and possibly create a carbonised porosity with high surface area, which are collectively referred to as degradation of PAN and are important factors for materials in applications such as supercapacitors for mobile applications.
If the variations in these properties can be detected after microwave treatment they can be indicative of the degree of degradation of the PAN [11]. 3.
More important factors in the performance of applications such as supercapacitors are if the variations in porosity can be detected after microwave treatment they can be indicative of the degree of degradation of the PAN.
The microwave power absorption on the irradiated materials is predominantly affected by dielectric properties, which are changed by the material temperature.
Therefore microwave power absorption of the irradiated PAN material can affect its dielectric properties, static electrical conductivity as reported by Koutsonas [11] and possibly create a carbonised porosity with high surface area, which are collectively referred to as degradation of PAN and are important factors for materials in applications such as supercapacitors for mobile applications.
If the variations in these properties can be detected after microwave treatment they can be indicative of the degree of degradation of the PAN [11]. 3.
More important factors in the performance of applications such as supercapacitors are if the variations in porosity can be detected after microwave treatment they can be indicative of the degree of degradation of the PAN.