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Online since: August 2013
Authors: Yue Zhou, Qiong Jia, Yan Ni Shen
In the understanding of material properties,as a full integration of design and technology and art was realized, construction quality was improved.
The specific design should be done from the following aspects: (A) Combining decoration material choice and detail design All materials have internal and external characteristics, such as morphology, texture, color, mechanical, chemical properties, and so on.
Designers should pay attention to the fine integration of these environmental factors and decoration material selection of the building when designing.
So the local climate is one of the important factors that affect the selection of colors of the building and furnishing materials.
The specific design should be done from the following aspects: (A) Combining decoration material choice and detail design All materials have internal and external characteristics, such as morphology, texture, color, mechanical, chemical properties, and so on.
Designers should pay attention to the fine integration of these environmental factors and decoration material selection of the building when designing.
So the local climate is one of the important factors that affect the selection of colors of the building and furnishing materials.
Online since: June 2019
Authors: Xiao Yu Wang, Xin Wei Bo, Yan Hui Wang, Rui Tang, Qi Liu, Chun Dong Jiang
The main factors of affect sintering densification included particle size, particle size distribution, powder compaction process, sintering temperature, sintering process.
The preparation technology of high purity vanadium, mechanical properties and microstructure characteristics of vanadium metal had been studied at home and abroad [5-13].
Especially as a key material of self-sufficiency detector, vanadium wire was far behind foreign products in purity, mechanical properties and service life [14].
High temperature mechanical properties and fracture characteristics of pure vanadium.
Study on preparation and properties of pure vanadium.
The preparation technology of high purity vanadium, mechanical properties and microstructure characteristics of vanadium metal had been studied at home and abroad [5-13].
Especially as a key material of self-sufficiency detector, vanadium wire was far behind foreign products in purity, mechanical properties and service life [14].
High temperature mechanical properties and fracture characteristics of pure vanadium.
Study on preparation and properties of pure vanadium.
Online since: May 2011
Authors: Rui Pang, Shu Ting Liang, Xiao Jun Zhu
Steel plate’s thickness is another factor that has big effect on the HPC’s axial capacity.
The slug length is 100mm and the steel plates’s stickout was 25mm, and these two factors remained constain during the analysis.
Shear stiffness, tension stiffness and compression stiffness are three important factors in calculating the in-plane deforemation of untopped precast concrete diaphragms in equivalent beam model.
Slug length can affect the axial capacity greatly.
And the compression capacity can greatly affected by the steel plate’s thickness.
The slug length is 100mm and the steel plates’s stickout was 25mm, and these two factors remained constain during the analysis.
Shear stiffness, tension stiffness and compression stiffness are three important factors in calculating the in-plane deforemation of untopped precast concrete diaphragms in equivalent beam model.
Slug length can affect the axial capacity greatly.
And the compression capacity can greatly affected by the steel plate’s thickness.
Online since: December 2007
Authors: Wing Bun Lee, Chi Fai Cheung, Suet To, Ling Bao Kong
The quality of a machined surface is affected by a
number of factors [1, 2] which include tool geometry, feed rate, material properties, spindle rotational
errors and relative vibration between tool and workpiece as summarised.
The amount of swelling depends on the properties and the crystallographic orientation of the material being cut.
The BDT depends on the material properties, magnitude of applied force and volume of material to be removed.
Lee, "Study of Factors Affecting the Surface Quality in Ultra-precision Diamond Turning," Materials and Manufacturing Processes, Vol. 15, No. 4, p.481(2000)
Moronuki, "Effect of Material Properties on Ultra Precise Cutting Processes," Annals of the CIRP, Vol.37, No.1, p.113 (1988)
The amount of swelling depends on the properties and the crystallographic orientation of the material being cut.
The BDT depends on the material properties, magnitude of applied force and volume of material to be removed.
Lee, "Study of Factors Affecting the Surface Quality in Ultra-precision Diamond Turning," Materials and Manufacturing Processes, Vol. 15, No. 4, p.481(2000)
Moronuki, "Effect of Material Properties on Ultra Precise Cutting Processes," Annals of the CIRP, Vol.37, No.1, p.113 (1988)
Online since: March 2020
Authors: Achmad Chafidz, Ridwan A. Destian, Fitratur Rahman, Suharno Rusdi
Plastics have many uses and their hydrophobic properties give many advantages to plastics.
"Optimization of Mechanical Properties of thermoplastic starch/clay nanocomposites."
"Plasticizer effect on the properties of biodegradable blend film from rice starch-chitosan."
"Praparations and properties of glycerol plasticized-pea starch/zinc oxide bionanocomposite."
"Extrude Cornstarch_Glycerol_Polyvinyl Alcohol Blends: Mechanical Properties, Morphology, annd Biodegradability."
"Optimization of Mechanical Properties of thermoplastic starch/clay nanocomposites."
"Plasticizer effect on the properties of biodegradable blend film from rice starch-chitosan."
"Praparations and properties of glycerol plasticized-pea starch/zinc oxide bionanocomposite."
"Extrude Cornstarch_Glycerol_Polyvinyl Alcohol Blends: Mechanical Properties, Morphology, annd Biodegradability."
Online since: May 2011
Authors: Yong Le Liu, Jian Xun Ouyan, Xiao Wen Li, Yu Cui Wei, Jian Yu, Chi Ling Li, Fa Xiang Wang, Ding Xie
XT2i physical property tester
The physical property tester was supplied by the Stable Micro systems Co., UK.
Mechanical property indexof the noodles Shearing test One rice noodle of about 50mm in length was placed on the flat top of the TA.
Table 1 Physical and chemical change in rice ferment Rice Percentage (%) Tatal starch Amylose Crude protein Ash Crude fat Before ferment 83.17±1.11a 24.13±0.74 a 13.17±0.85 b 0.80±0.07 b 0.70±0.03 b After ferment 72 h 82.39±1.31 a 26.64±0.81 b 9.75±0.42 a 0.55±0.05 a 0.13±0.01 a Values followed by different letters in the same column are significantly different (p<0.05) Table 2 Noodle mechanical property index and sensory evaluation Rice noodles Tension stress (g.mm-2) Tensile deformation Shearing stress (g.mm-2) Shearing deformation Sensory evalution by fermented 16.98±1.08b 0.82±0.05 b 73.92±2.12 b 1.00±0.06 b flexible, good mouthful without fermented 4.30±0.29 a 0.35±0.02 a 53.5±2.11 a 0.77±0.03 a hard, brittle, bad mouthful Values followed by different letters in the same column are significantly different (p<0.05) 3.2 Anti-retrogardation effect of additives on rice noodles Retrogardation is the most important factor affecting the property of fresh instant rice
Therefore proper enzyme hydrolysis is a key factor in the inhibition of retrogradation of the rice product.
Lai,“Effects of rice properties and emulsifiers on the quality of rice pasta”Journal of the Science of Food and Agriculture, Vol. 82, No2, 203-216. 2002 [6] GB/T 15683-1995, Chinese stardard, Rice-determination of amylose content
Mechanical property indexof the noodles Shearing test One rice noodle of about 50mm in length was placed on the flat top of the TA.
Table 1 Physical and chemical change in rice ferment Rice Percentage (%) Tatal starch Amylose Crude protein Ash Crude fat Before ferment 83.17±1.11a 24.13±0.74 a 13.17±0.85 b 0.80±0.07 b 0.70±0.03 b After ferment 72 h 82.39±1.31 a 26.64±0.81 b 9.75±0.42 a 0.55±0.05 a 0.13±0.01 a Values followed by different letters in the same column are significantly different (p<0.05) Table 2 Noodle mechanical property index and sensory evaluation Rice noodles Tension stress (g.mm-2) Tensile deformation Shearing stress (g.mm-2) Shearing deformation Sensory evalution by fermented 16.98±1.08b 0.82±0.05 b 73.92±2.12 b 1.00±0.06 b flexible, good mouthful without fermented 4.30±0.29 a 0.35±0.02 a 53.5±2.11 a 0.77±0.03 a hard, brittle, bad mouthful Values followed by different letters in the same column are significantly different (p<0.05) 3.2 Anti-retrogardation effect of additives on rice noodles Retrogardation is the most important factor affecting the property of fresh instant rice
Therefore proper enzyme hydrolysis is a key factor in the inhibition of retrogradation of the rice product.
Lai,“Effects of rice properties and emulsifiers on the quality of rice pasta”Journal of the Science of Food and Agriculture, Vol. 82, No2, 203-216. 2002 [6] GB/T 15683-1995, Chinese stardard, Rice-determination of amylose content
Online since: September 2011
Authors: Bin Wu, Cun Fu He, Yu E Yang
By calculating phase difference for different values of dielectric thickness, dielectric permittivity, standoff distance or dielectric permittivity in waveguide, which affect sensitive frequency, we discussed the relationship between the sensitive frequency and other parameters, and the relationship between the sensitivity and other parameters; and discussed the development of a technique which utilizes the phase properties of reflection coefficient of a microwave signal as it passes through the dielectric plates and is reflected by the conducting plate.
2.
Theoretical result In the near-field approach, the properties of the phase of the reflection coefficient calculated at the reference plane of a probe (in this case the aperture of a rectangular waveguide) are described in theoretical bases in above.
This shows that the uniform dielectric permittivity will not affect the choice of frequency sensitive.
Frequency/f/GHz Standoff distance Phase difference/deg 0 5 10 15 20 25 30 35 40 0 5 10 15 20 25 30 35 5mm 10 15 20 These two factors (dielectric thickness and permittivity) are internal factors of the measured materials.
In order to improve the detection sensitivity, external factors should be studied.
Theoretical result In the near-field approach, the properties of the phase of the reflection coefficient calculated at the reference plane of a probe (in this case the aperture of a rectangular waveguide) are described in theoretical bases in above.
This shows that the uniform dielectric permittivity will not affect the choice of frequency sensitive.
Frequency/f/GHz Standoff distance Phase difference/deg 0 5 10 15 20 25 30 35 40 0 5 10 15 20 25 30 35 5mm 10 15 20 These two factors (dielectric thickness and permittivity) are internal factors of the measured materials.
In order to improve the detection sensitivity, external factors should be studied.
Online since: August 2014
Authors: Hansong Yang, Su Zheng Wu, Jian Xiu Liu, Chun Xia He
Used AR2000ex rheometer, investigated the effects of different sessions on the rheological properties of the grease.
When mechanical equipment stop working, grease can restore a certain viscosity, present solid properties and adhere on the surface of friction pair, because it is no longer affected by shearing action.
The rheological properties of grease decide it can work in the place where the lubricating oil inapplicable.
The Research Status At present, the review of literature on the rheological properties grease is still very limited.
Grease added different thickener present different rheological properties and their use are also different.
When mechanical equipment stop working, grease can restore a certain viscosity, present solid properties and adhere on the surface of friction pair, because it is no longer affected by shearing action.
The rheological properties of grease decide it can work in the place where the lubricating oil inapplicable.
The Research Status At present, the review of literature on the rheological properties grease is still very limited.
Grease added different thickener present different rheological properties and their use are also different.
Online since: October 2010
Authors: Ying Cai Yuan, Yi Lun Liu, Yan Li
Introduction
With the mechanical development to high-speed, the nonlinear vibration phenomenon of
mechanical system is more apparent than before, which is caused by clearance.
Ordinary mechanical optimization design can make some mechanical property achieve optimal, but it is hard to keep the mechanical system in stability for long time, because it don't consider the random of structural physical and geometric parameters [2].
Robust design is a modern design method which comprehensively considers the influences of uncontrollable factors, such as size errors and clearances in pairs, to the dynamic responses of mechanical system [3,4,5].
Analytical Robust Design of Non-linear Mechanical Systems, Journal of Mechanical Engineering, Vol. 40 (2009), p.207-215 [5] L.Q Liao, Y.
Mechanical Design and Manufacturing Engineering, Vol. 29 (2000), p. 7-13 [6] Z.Y Chang, C.
Ordinary mechanical optimization design can make some mechanical property achieve optimal, but it is hard to keep the mechanical system in stability for long time, because it don't consider the random of structural physical and geometric parameters [2].
Robust design is a modern design method which comprehensively considers the influences of uncontrollable factors, such as size errors and clearances in pairs, to the dynamic responses of mechanical system [3,4,5].
Analytical Robust Design of Non-linear Mechanical Systems, Journal of Mechanical Engineering, Vol. 40 (2009), p.207-215 [5] L.Q Liao, Y.
Mechanical Design and Manufacturing Engineering, Vol. 29 (2000), p. 7-13 [6] Z.Y Chang, C.
Online since: October 2014
Authors: Constantin Carausu, Pavel Iurea
Thermal stresses that arise due to rectification, should be removed as it can affect the depth at which compressive stresses exist.
Thereby, the residual stresses of mechanical origin result naturally after the mechanical processing or by cold pressing and mechanical treatments (straightening, stamping, autofretting, shot peening, rolling), which lead to non-uniform plastic deformation that occur in case of machine parts and mechanical structures overload.
Fig. 6 Distribution of residual stresses for samples of alloyed steel with Cr and Mo subjected to the tensile and compression tests [5] Fig. 7 Distributions of residual stresses caused by mechanical and thermal treatments in case of alloy steels [5] Fig. 8 Fracture strength values for samples with compressive stresses, tensile stresses and without induced residual stresses [5] Operations of turning, milling, broaching and finishing operations such as rectification, polishing and honing significantly affect the fatigue strength, the dominant factor being the residual tension.
In the case of cutting manufacturing processes, an important factor that must be considered is the effect of removal of the particles of material [5].
Proeedings, Institution of Mechanical Engineers, London, 177(25): pp. 676-685, 1963
Thereby, the residual stresses of mechanical origin result naturally after the mechanical processing or by cold pressing and mechanical treatments (straightening, stamping, autofretting, shot peening, rolling), which lead to non-uniform plastic deformation that occur in case of machine parts and mechanical structures overload.
Fig. 6 Distribution of residual stresses for samples of alloyed steel with Cr and Mo subjected to the tensile and compression tests [5] Fig. 7 Distributions of residual stresses caused by mechanical and thermal treatments in case of alloy steels [5] Fig. 8 Fracture strength values for samples with compressive stresses, tensile stresses and without induced residual stresses [5] Operations of turning, milling, broaching and finishing operations such as rectification, polishing and honing significantly affect the fatigue strength, the dominant factor being the residual tension.
In the case of cutting manufacturing processes, an important factor that must be considered is the effect of removal of the particles of material [5].
Proeedings, Institution of Mechanical Engineers, London, 177(25): pp. 676-685, 1963