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Online since: January 2013
Authors: Bei Hai He, Ying Li, Wen Juan Gu
The surface topography and properties of coating layer have an important influence on penetration and distribution of the print ink.
Factors such as pore structure, coating color formulation, particle arranging and coating speed, et are important to final printing.
The amount and type of latex binder has a significant effect on both the structure and chemical-physical properties of coated paper, which affect critical surface properties, e.g., print gloss, roughness, ink setting rate via liquid absorption, and spreading properties [1-2].
One of the important factors affecting printability is the surface structure of coated paper, generally referred to as surface smoothness or roughness.
It could be concluded that binder affected surface topography, pore distribution, surface physical-chemical properties and final printing quality of coated paper.
Factors such as pore structure, coating color formulation, particle arranging and coating speed, et are important to final printing.
The amount and type of latex binder has a significant effect on both the structure and chemical-physical properties of coated paper, which affect critical surface properties, e.g., print gloss, roughness, ink setting rate via liquid absorption, and spreading properties [1-2].
One of the important factors affecting printability is the surface structure of coated paper, generally referred to as surface smoothness or roughness.
It could be concluded that binder affected surface topography, pore distribution, surface physical-chemical properties and final printing quality of coated paper.
Online since: January 2014
Authors: Ling Xia Gao, Li Kun Qin, Hong Wei Song, Xiu Wei Wang
Introduction
The double factors, namely freeze-thaw cycle and corrosion, directly affect the durability of concrete.
At the present time, the study on mechanical properties of concrete under the action of the freeze-thaw cycle and the corrosive medium is not so more, the applied freeze-thaw methods for concrete are also no same.
In this paper, mechanical properties experiments of concrete in seawater after 0, 25, 50, 75 and 100 freeze-thaw cycles were studied using fast frost method.
Mechanical properties experiments of concrete after 0, 25, 50 ,75 and 100 freeze-thaw cycles were carried out.
Fig.2 The relation between strains at peak stress points with freezing-thawing cycles Conclusions (1) Both freezing-thawing cycles and corrosion can damage mechanical properties of concrete.
At the present time, the study on mechanical properties of concrete under the action of the freeze-thaw cycle and the corrosive medium is not so more, the applied freeze-thaw methods for concrete are also no same.
In this paper, mechanical properties experiments of concrete in seawater after 0, 25, 50, 75 and 100 freeze-thaw cycles were studied using fast frost method.
Mechanical properties experiments of concrete after 0, 25, 50 ,75 and 100 freeze-thaw cycles were carried out.
Fig.2 The relation between strains at peak stress points with freezing-thawing cycles Conclusions (1) Both freezing-thawing cycles and corrosion can damage mechanical properties of concrete.
Online since: December 2013
Authors: Bin En Nie, Shi Dong Hu, Jian Liang Zhou
This improves the mechanical and biological properties of scaffold materials [33,34].
When cells are recognizing with the characteristics of scaffold surface, they can respond to micron- or nano-scale structures, thereby affecting cell adhesion and growth.
At present, POSS-PCU is a favorable option as a biologically stable nano-scaffold due to good mechanical strength and viscosity properties.
De Vos, et al: Layer-by-layer incorporation of growth factors in decellularized aortic heart valve leaflets.
Gaharwar, et al: Effect of biodegradation and de novo matrix synthesis on the mechanical properties of VIC-seeded PGS-PCL scaffolds.
When cells are recognizing with the characteristics of scaffold surface, they can respond to micron- or nano-scale structures, thereby affecting cell adhesion and growth.
At present, POSS-PCU is a favorable option as a biologically stable nano-scaffold due to good mechanical strength and viscosity properties.
De Vos, et al: Layer-by-layer incorporation of growth factors in decellularized aortic heart valve leaflets.
Gaharwar, et al: Effect of biodegradation and de novo matrix synthesis on the mechanical properties of VIC-seeded PGS-PCL scaffolds.
Online since: December 2022
Authors: Mohd Zulkhairi Abdul Rahim, Nadirah Arifin, Zaida Rahayu Yet
Thickness can also affect the mechanical properties of other films such as tensile strength and elongation.
Rhim, (2004) Physical and mechanical properties of water resistant sodium alginate films, Lebensm.
Effect of Time Save Biodegradation Plastic Film from Cassava Skin Starch on its Mechanical Properties.
Effect of different plasticisers on the mechanical and barrier properties of extruded cast PHBV films.
Effect of different formulations on mechanical and physical properties of calcium alginate edible films.
Rhim, (2004) Physical and mechanical properties of water resistant sodium alginate films, Lebensm.
Effect of Time Save Biodegradation Plastic Film from Cassava Skin Starch on its Mechanical Properties.
Effect of different plasticisers on the mechanical and barrier properties of extruded cast PHBV films.
Effect of different formulations on mechanical and physical properties of calcium alginate edible films.
Online since: January 2012
Authors: Qiang Wu, Lan Ying Xu, Yu Zhong Li
For example through adding Alloy to structural steel, optimizing composition, special smelting method, galvanizing and other technology can obtain excellent performance such as high strength, good ductility and toughness, low temperature resistance, high temperature resistance, corrosion resistance and wear resistance properties and so on. therefore high strength galvanized steel has become preferred vehicle body material.
Table 1.Chemical composition and mechanical properties of tested materials /MPa /Mpa C Si Mn P S Others 800--950 500 10(%) 0.18 0.5 2.0 0.025 0.015 ≥0.015 Adopting acetone to clean the welding positions before welding, using the self-made clamp fixing workpiece, ensuring smooth workpiece welding, butt weld welding gap is controlled in plate thickness of less than 10%.
Along the perpendicular direction of weld seams to Cut welding parts after welding, polishing workpiece after acid etching, metallographic microscope is used to observe the weld seam and welding quality, a hardness test has done to weld heat affected zone, and mechanical performance analysis has been done to welding specimen.
(a) Weld pool (b)Heat affected zone Fig.1 Joint microstructure(500) (P=1300W,V=0.96m/min,defocus=-0.4mm,gap0.15mm,α=300,Ar) Mechanical properties tests of weld microstructure.
When the welding speed exceeds a certain value, sensitivity of the welding joint crack increases, Welding speed limit is related with laser power, thickness and other factors.
Table 1.Chemical composition and mechanical properties of tested materials /MPa /Mpa C Si Mn P S Others 800--950 500 10(%) 0.18 0.5 2.0 0.025 0.015 ≥0.015 Adopting acetone to clean the welding positions before welding, using the self-made clamp fixing workpiece, ensuring smooth workpiece welding, butt weld welding gap is controlled in plate thickness of less than 10%.
Along the perpendicular direction of weld seams to Cut welding parts after welding, polishing workpiece after acid etching, metallographic microscope is used to observe the weld seam and welding quality, a hardness test has done to weld heat affected zone, and mechanical performance analysis has been done to welding specimen.
(a) Weld pool (b)Heat affected zone Fig.1 Joint microstructure(500) (P=1300W,V=0.96m/min,defocus=-0.4mm,gap0.15mm,α=300,Ar) Mechanical properties tests of weld microstructure.
When the welding speed exceeds a certain value, sensitivity of the welding joint crack increases, Welding speed limit is related with laser power, thickness and other factors.
Online since: March 2011
Authors: Yu Xin Dai, Rui Fen Zhou, Lin Bai, Kang Xing Dong
It is difficult to analyze because the touch grinding between sucker rod and oil tube is uncertain random factors.
In addition, there are environmental factors, such as corrosion influence is also one of sucker rod column short-lived reasons.
The static load part is related with oil well production parameters , such as the diameter of rod, diameter of pump, submergence depth, pump setting depth and well liquid density;As dynamic load part relates to the above factors , but also to the well liquid properties which contains pumping stroke length, stroke times and well liquid viscosity, containing gas ratio.
Comprehensive considerating above all factors affect on sucker rod, this paper adopt 6 factors as influence variables .They are sucker rod stroke, sucker rod flush times, the diameter of the sucker rod, pump diameter, submergence depth, pump set depth.
It is reasonable that take sucker rod stroke, stroke frequency, sucker rod diameter , pump diameter, submergence depth, downhole pump depth asthe main factors which affecting sucker rod suspension load.The maximum relative error of sucker rod maximum suspension load is 4% which can meet the demand of actual producing wells.It provides a new method to predict sucker rod suspension load by BP artificial neural network improved from LM.
In addition, there are environmental factors, such as corrosion influence is also one of sucker rod column short-lived reasons.
The static load part is related with oil well production parameters , such as the diameter of rod, diameter of pump, submergence depth, pump setting depth and well liquid density;As dynamic load part relates to the above factors , but also to the well liquid properties which contains pumping stroke length, stroke times and well liquid viscosity, containing gas ratio.
Comprehensive considerating above all factors affect on sucker rod, this paper adopt 6 factors as influence variables .They are sucker rod stroke, sucker rod flush times, the diameter of the sucker rod, pump diameter, submergence depth, pump set depth.
It is reasonable that take sucker rod stroke, stroke frequency, sucker rod diameter , pump diameter, submergence depth, downhole pump depth asthe main factors which affecting sucker rod suspension load.The maximum relative error of sucker rod maximum suspension load is 4% which can meet the demand of actual producing wells.It provides a new method to predict sucker rod suspension load by BP artificial neural network improved from LM.
Online since: December 2014
Authors: Long Sheng Bao, Ling Yu, Dong Ye Zhu
The properties of asphalt material determine that it is bound to result in large porosity of mixture, and then poor water resistance, thus easily causing moisture damage.
Analysis of Factors for Wheel Rut Wheel rut is mainly caused by internal and external factors.
Internal Factors.
External Factors.
This paper did not analyze RAP proportion, for there are a lot of factors affecting pavement performance and simple analysis is not persuasive enough.
Analysis of Factors for Wheel Rut Wheel rut is mainly caused by internal and external factors.
Internal Factors.
External Factors.
This paper did not analyze RAP proportion, for there are a lot of factors affecting pavement performance and simple analysis is not persuasive enough.
Online since: July 2023
Authors: Mashuri Mashuri, Muh.S. Sapri
Especially in materials, the materials needed are quality materials and have high mechanical properties.
The fiber functions as a reinforcing element that determines the mechanical properties of the composite because it transmits the load transmitted by the matrix.
To study the mechanical properties of these polymer composites, it is necessary to test the mechanical properties by providing a certain thermal variation.
This increase in storage modulus indicates that the addition of carbon concentration greatly affects the mechanical properties of the composite.
[5] Oroh, J., P.Sappu, F. and Lumintang, R. (2013) 'Analysis of Mechanical Properties of Composite Materials from Coconut Coir Fiber', p. 10
The fiber functions as a reinforcing element that determines the mechanical properties of the composite because it transmits the load transmitted by the matrix.
To study the mechanical properties of these polymer composites, it is necessary to test the mechanical properties by providing a certain thermal variation.
This increase in storage modulus indicates that the addition of carbon concentration greatly affects the mechanical properties of the composite.
[5] Oroh, J., P.Sappu, F. and Lumintang, R. (2013) 'Analysis of Mechanical Properties of Composite Materials from Coconut Coir Fiber', p. 10
Online since: October 2010
Authors: Chuan Bai Yu, Chun Wei, Dong Ming Pan
In comparison, U-SiO2 reinforced nanocomposites showed higher thermal properties than those reinforced by mesoporous silica (SBA-15) and SiO2 synthesized by stirring (S-SiO2).
Introduction The organic-inorganic hybridizing materials, especially the nanocomposites consisting of nano-inorganic particles and polymer resin, have received considerable attention recently due to that the resultant materials are supposed to have better mechanical and/or thermal properties.
The objective of this study is to improve mechanical strength and thermal properties of nano-SiO2/PF nanocomposites.
The effect of various nano-SiO2 on thermal properties of the PF nanocomposites was characterized with dynamic mechanical analysis (DMA), thermomechanical Analysis (TMA), and thermogravimetric analysis (TGA).
The followings are the conclusions: (1) The dynamic mechanical properties of nano-SiO2/PF nanocomposites are affected by adding nono-SiO2 to the polymer matrix.
Introduction The organic-inorganic hybridizing materials, especially the nanocomposites consisting of nano-inorganic particles and polymer resin, have received considerable attention recently due to that the resultant materials are supposed to have better mechanical and/or thermal properties.
The objective of this study is to improve mechanical strength and thermal properties of nano-SiO2/PF nanocomposites.
The effect of various nano-SiO2 on thermal properties of the PF nanocomposites was characterized with dynamic mechanical analysis (DMA), thermomechanical Analysis (TMA), and thermogravimetric analysis (TGA).
The followings are the conclusions: (1) The dynamic mechanical properties of nano-SiO2/PF nanocomposites are affected by adding nono-SiO2 to the polymer matrix.
Online since: October 2010
Authors: Jun Zhang, Xin Li Wei, Zhong Yao Zhao
It was observed that the anisotropic conducive adhesive bonding
strengths decreases much after thermal cycle and humidity experiment; it can affect not only on the
maximal strength but also interfacial stiffnesses.
The thermal damage factor and humidity damage factor can be derived from the experiment.
When the temperature and humidity is the bonding interfacial major damage factors, the interfacial damage factor Hκ is relation to the duration.
The constitutive properties of the bonding interface can be determined through the cohesive zone damage models by the four parameters maxσ ,δ,αandκ.
Fig. 2 demonstrated the effects the damage factors that can impact not only the initial bonding energy but also the bonding strengths.
The thermal damage factor and humidity damage factor can be derived from the experiment.
When the temperature and humidity is the bonding interfacial major damage factors, the interfacial damage factor Hκ is relation to the duration.
The constitutive properties of the bonding interface can be determined through the cohesive zone damage models by the four parameters maxσ ,δ,αandκ.
Fig. 2 demonstrated the effects the damage factors that can impact not only the initial bonding energy but also the bonding strengths.