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Online since: September 2011
Authors: Jin Tang Zhou, Zheng Jun Yao, Juan Juan Zhou
Crystallinity is one of the most important factors affected to both embrittlement and softening temperature[1].
Macroscopic mechanics properties were detected to reveal the influence of change in crystallinity on mechanical property.
The two Ethylene-octene copolymers had almost the same mechanical properties.
It should be pointed out that not only polarity but also the other factors have affect on compatibility of polymers.
Equilibrium of distilled water on each sample 3.2 Relationship between mechanical properties and crystallinity The crystallinity of PLA matrix affected by POE, the result of XRD test on PLA matrix was shown in fig. 2.
Macroscopic mechanics properties were detected to reveal the influence of change in crystallinity on mechanical property.
The two Ethylene-octene copolymers had almost the same mechanical properties.
It should be pointed out that not only polarity but also the other factors have affect on compatibility of polymers.
Equilibrium of distilled water on each sample 3.2 Relationship between mechanical properties and crystallinity The crystallinity of PLA matrix affected by POE, the result of XRD test on PLA matrix was shown in fig. 2.
Online since: October 2014
Authors: Ping Hua Zhu, Xin Xin Zhang
The content of pigment from 5% to 10% has no impact on mechanical properties and permeability of RAC.
The table 2 declared that the degree orders of four factors affecting the flexural strength were: water-binder ratio>polypropylene fiber dosage>pigment dosage>slag dosage.
Table 4 showed that the degree orders of four factors affecting the compressive strength were: water-binder ratio>polypropylene fiber dosage>slag dosage>pigment dosage.
Table 6 showed that the degree orders of four factors affecting the permeable coefficient were: water-binder ratio> polypropylene fiber dosage> slag dosage >pigment dosage.
It stated that water cement ratio was the main factor affecting permeable coefficient.
The table 2 declared that the degree orders of four factors affecting the flexural strength were: water-binder ratio>polypropylene fiber dosage>pigment dosage>slag dosage.
Table 4 showed that the degree orders of four factors affecting the compressive strength were: water-binder ratio>polypropylene fiber dosage>slag dosage>pigment dosage.
Table 6 showed that the degree orders of four factors affecting the permeable coefficient were: water-binder ratio> polypropylene fiber dosage> slag dosage >pigment dosage.
It stated that water cement ratio was the main factor affecting permeable coefficient.
Online since: October 2015
Authors: Ivana Schwarzova, Nadežda Števulová, Julia Cigasova
In this paper, the important characteristics of fibrous and isometric particles affecting the final properties of hardened composites are discussed.
The natural fibres properties depend on several factors, including fibre source and type, chemical composition, structure, fibrous aggregate shape and dimensions (length, width), cell dimensions, microfibrillar angle, surface, physical and mechanical parameters.
This article gives a review of the results of research aimed at studying the influence of key factors of fibrous and isometric particles on the final properties of hardened biocomposites with inorganic matrix.
Based on literature data as well as on our previous research, the key factors influencing properties of biocomposites based on hemp hurds are content of fibrous material [28], particle size of used fibres [29, 30], pre-treatment method [9, 31] and binder nature [21, 32].
Chotard, Mechanical properties of hemp-lime reinforced mortars: influence of the chemical treatments of fibers, J.
The natural fibres properties depend on several factors, including fibre source and type, chemical composition, structure, fibrous aggregate shape and dimensions (length, width), cell dimensions, microfibrillar angle, surface, physical and mechanical parameters.
This article gives a review of the results of research aimed at studying the influence of key factors of fibrous and isometric particles on the final properties of hardened biocomposites with inorganic matrix.
Based on literature data as well as on our previous research, the key factors influencing properties of biocomposites based on hemp hurds are content of fibrous material [28], particle size of used fibres [29, 30], pre-treatment method [9, 31] and binder nature [21, 32].
Chotard, Mechanical properties of hemp-lime reinforced mortars: influence of the chemical treatments of fibers, J.
Online since: November 2012
Authors: Guang Fu Liu, Zhi Feng Liu, Shao Bo Pan, Zhong Wei Wu
Multivariate quadratic simulation equations are established and the order of significantly affecting the regeneration is determined.
Theoretical analysis of physical decomposition and regeneration Through mechanical forces affecting phenol resin for a long crushing time, the size reduced, specific surface area increased.
It is a mechanical result of force, friction, heat, and other factors.
According to conditions and the existing experience, each factor sets three level factors, determine the orthogonal experimental programmer.
Molecular chains are broken, and the material recovers thermoplastic molding properties.
Theoretical analysis of physical decomposition and regeneration Through mechanical forces affecting phenol resin for a long crushing time, the size reduced, specific surface area increased.
It is a mechanical result of force, friction, heat, and other factors.
According to conditions and the existing experience, each factor sets three level factors, determine the orthogonal experimental programmer.
Molecular chains are broken, and the material recovers thermoplastic molding properties.
Online since: November 2012
Authors: Liu Hai, Xiao Bin Zhu
Abstract: In order to weaken the loss of erosion damage for highway slope in loess area, the author analyzes the main factors affecting the erosion and puts forward prevention measures by theoretical analysis and field survey.
Large-scale erosion damage is easy to be caused in loess slope by rainfall splashing and scouring effect of water for the slope combining with special physical properties and hydrological properties.
Degree of rainfall erosion on the highway slope of loess area is affected by the various above factors.
Silts in loess are dominant, but the loess physical and mechanical properties are significantly affected by clay particles.
(2)Summarize the main factors affecting rainfall erosion damage of the slope, such as catchment area, slope length, slope grade, vegetation coverage and soil parameters, etc.
Large-scale erosion damage is easy to be caused in loess slope by rainfall splashing and scouring effect of water for the slope combining with special physical properties and hydrological properties.
Degree of rainfall erosion on the highway slope of loess area is affected by the various above factors.
Silts in loess are dominant, but the loess physical and mechanical properties are significantly affected by clay particles.
(2)Summarize the main factors affecting rainfall erosion damage of the slope, such as catchment area, slope length, slope grade, vegetation coverage and soil parameters, etc.
Online since: April 2014
Authors: Bao Liang Bai, Ming Chen Han, Mei Sheng Zhu, Li Peng Zhou, Pei Tong Ni
Because the alloy has complex composition, its microstructure and mechanical properties are sensitive to processing factors.
The effect of cold machining deformation rate on mechanical properties is shown in Fig.1.
The results above reveal that the mechanical properties of TB2 alloy strips in as-solutioned condition are hardly affected by cold machining deformation rate.
Fig.5 shows the effect of cold machining deformation rate on mechanical properties in as-aged condition.
(2) The deformation rate hardly affects the mechanical property in solution condition while it does have a certain contribution to the mechanical property in the solution and aging (STA) condition.
The effect of cold machining deformation rate on mechanical properties is shown in Fig.1.
The results above reveal that the mechanical properties of TB2 alloy strips in as-solutioned condition are hardly affected by cold machining deformation rate.
Fig.5 shows the effect of cold machining deformation rate on mechanical properties in as-aged condition.
(2) The deformation rate hardly affects the mechanical property in solution condition while it does have a certain contribution to the mechanical property in the solution and aging (STA) condition.
Online since: July 2024
Authors: Jian Qin Zhang
The structure and properties of the fiber surface directly determine the interface properties of the composite material, which in turn affects the mechanical properties of the composite material.
The flexural properties, interlaminar shear properties and compression properties of the composites were studied.
Good interface binding energy can effectively transfer the load, thus improving the mechanical properties of materials.
There are many factors affecting the compressive properties of carbon fiber composites, such as fiber mechanical properties, resin matrix properties and the interfacial bonding strength between fiber and resin matrix.
T700 carbon fiber reinforced epoxy resin composites have the best comprehensive mechanical properties
The flexural properties, interlaminar shear properties and compression properties of the composites were studied.
Good interface binding energy can effectively transfer the load, thus improving the mechanical properties of materials.
There are many factors affecting the compressive properties of carbon fiber composites, such as fiber mechanical properties, resin matrix properties and the interfacial bonding strength between fiber and resin matrix.
T700 carbon fiber reinforced epoxy resin composites have the best comprehensive mechanical properties
Online since: September 2016
Authors: Xiang Jie Yang, Guang Bin Yi, Hong Min Guo, Yun Hai Jing, Yi He, Yong Bo Zhu, Chuan Lin Hu
The mechanical properties under different process conditions were analyzed; also the influence of the three factors on the results was analyzed.
Range reflects the influence of factors.
Mould temperature also has a more obvious influence on the mechanical properties of specimens.
After analyzed the variance of orthogonal data and test the significance, table5, we can see that the factors affecting the tensile strength and yield strength are the injection rate, the factors affecting the elongation rate is the preheating temperature of the mould, and the optimum technological parameters are: Injection speed is 0.5m/s, injection pressure is 50Mpa and mould temperature is 240℃ Table 4 Mechanical properties under different process conditions Mechanical propeties Values Injection speed( m/s) Injection pressure(MPa) Mould preheating temperature (℃) Ultimate tensile strength Average value 1 311.667 292.667 290.667 Average value 2 300.000 302.000 306.667 Average value 3 286.333 303.667 305.667 Range value 25.334 12.334 15.000 Yield strength Average value 1 235.667 227.333 228.667 Average value 2 232.333 231.333 232.000 Average value 3 227.667 237.000 235.000 Range value 8.000 9.667 5.333 Elongation rate Average value 1 11.330 10.067 9.167 Average value 2 10.467 11.033
Microstructure and mechanical properties of squeeze cast and semi-solid cast Mg–Al alloys [J].
Range reflects the influence of factors.
Mould temperature also has a more obvious influence on the mechanical properties of specimens.
After analyzed the variance of orthogonal data and test the significance, table5, we can see that the factors affecting the tensile strength and yield strength are the injection rate, the factors affecting the elongation rate is the preheating temperature of the mould, and the optimum technological parameters are: Injection speed is 0.5m/s, injection pressure is 50Mpa and mould temperature is 240℃ Table 4 Mechanical properties under different process conditions Mechanical propeties Values Injection speed( m/s) Injection pressure(MPa) Mould preheating temperature (℃) Ultimate tensile strength Average value 1 311.667 292.667 290.667 Average value 2 300.000 302.000 306.667 Average value 3 286.333 303.667 305.667 Range value 25.334 12.334 15.000 Yield strength Average value 1 235.667 227.333 228.667 Average value 2 232.333 231.333 232.000 Average value 3 227.667 237.000 235.000 Range value 8.000 9.667 5.333 Elongation rate Average value 1 11.330 10.067 9.167 Average value 2 10.467 11.033
Microstructure and mechanical properties of squeeze cast and semi-solid cast Mg–Al alloys [J].
Online since: August 2013
Authors: Tao Xue, Jun Fa Xu
The environmental factors have complex effects on the bearing properties of group pile foundation.
Finally, the impacts of different environment factors on the bearing properties of group pile foundation had been got.
But studies of assessing the effect of complex environmental factors on the bearing properties of group pile foundation are relatively rare.
In order to build relationship between strains and water level, it is needed to choose the strains that during the simple construction conditions (for example bridge has been finished) and also less affected by other factors (such as the cloudy day without wind).
So we can think the impact of these factors on the mechanical characteristics of group pile foundation degree is bigger.
Finally, the impacts of different environment factors on the bearing properties of group pile foundation had been got.
But studies of assessing the effect of complex environmental factors on the bearing properties of group pile foundation are relatively rare.
In order to build relationship between strains and water level, it is needed to choose the strains that during the simple construction conditions (for example bridge has been finished) and also less affected by other factors (such as the cloudy day without wind).
So we can think the impact of these factors on the mechanical characteristics of group pile foundation degree is bigger.
Online since: December 2014
Authors: Ying Wang, Pan Pan Yang
The physical and mechanical properties and microstructure of Q2 loess are of great theoretical and practical significance.
These are due to its internal stress distribution caused by uneven, the internal structure of loess is one of the main factors affecting the stress distribution.
Methods Soil samples are from the Lin-tong District, Through the geotechnical experiment, study the basic physical and mechanical properties of loess;Q2 loess electron processing, analysis the microstructure characteristics of loess and links with the physical and mechanical properties.
By the loess Q2 of the experiment of the physical properties can get physical properties analysis, The results is shown in Table 1.
By the loess Q2 of the experiment of the mechanical properties can get physical properties analysis, The results is shown in Table 2.
These are due to its internal stress distribution caused by uneven, the internal structure of loess is one of the main factors affecting the stress distribution.
Methods Soil samples are from the Lin-tong District, Through the geotechnical experiment, study the basic physical and mechanical properties of loess;Q2 loess electron processing, analysis the microstructure characteristics of loess and links with the physical and mechanical properties.
By the loess Q2 of the experiment of the physical properties can get physical properties analysis, The results is shown in Table 1.
By the loess Q2 of the experiment of the mechanical properties can get physical properties analysis, The results is shown in Table 2.