Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: April 2014
Authors: Klára Kroftová
This feature has a significant positive effect on their physical and mechanical properties compared to conventional materials.
The standard properties of nanoparticles can be further functionalized and thus get completely new chemical and physical properties.
Furthermore, there should be no changes in material properties, surface color, diffusion properties and surface properties (reflectance, gloss, roughness, etc.).
Among the factors that significantly affect the success of the strengthening process are: the mineralogical composition of the strengthening material, the nature of the pore system (size and shape of the pores), the type of solvent used, the nanotextile density and temperature-humidity conditions during application.
It has been shown that the construction materials exhibit previously unknown properties at this level, which can be affected or modified.
The standard properties of nanoparticles can be further functionalized and thus get completely new chemical and physical properties.
Furthermore, there should be no changes in material properties, surface color, diffusion properties and surface properties (reflectance, gloss, roughness, etc.).
Among the factors that significantly affect the success of the strengthening process are: the mineralogical composition of the strengthening material, the nature of the pore system (size and shape of the pores), the type of solvent used, the nanotextile density and temperature-humidity conditions during application.
It has been shown that the construction materials exhibit previously unknown properties at this level, which can be affected or modified.
Online since: August 2014
Authors: Lucian Toma Ciocan, Marin Bane, Florin Miculescu, Mihai Branzei, Marian Miculescu, Daniela Meghea
The implant surface morphology and microstructure significantly affect cells and tissue quantity formed at the interface.
Surface properties of biomaterials are commonly grouped into three categories: geometric, electrical and chemical properties.
Implant geometry is one of the most important factors to be taken into account during the implant or prosthesis design.
Mullere, Relationship between surface properties (roughness, wettability and morphology) of titanium and dental implant removal torque, J Mech.
Voicu, Correlation aspects between morphology, infrared and acoustic absorptions properties of various material, Optoelectron Adv Mat 6 (5-6) (2012) 631-638
Surface properties of biomaterials are commonly grouped into three categories: geometric, electrical and chemical properties.
Implant geometry is one of the most important factors to be taken into account during the implant or prosthesis design.
Mullere, Relationship between surface properties (roughness, wettability and morphology) of titanium and dental implant removal torque, J Mech.
Voicu, Correlation aspects between morphology, infrared and acoustic absorptions properties of various material, Optoelectron Adv Mat 6 (5-6) (2012) 631-638
Online since: June 2012
Authors: Chang Rong Yao, Ya Dong Li
However, because of the complexity and particularity in bridge structure, monitoring variables are greatly influenced by environmental factors, which results in more difficulties in evaluation.
The main reason is that the dynamic parameters of a real bridge are affected greatly by the uncertainty of the non-structural factors and boundary condition, especially the interference of the environment.
The temperature difference between members is mainly caused by the difference of material thermal properties and geometry shape.
The temperature change affects elastic modulus, E, of concrete.
The temperature change affects boundary condition of structure.
The main reason is that the dynamic parameters of a real bridge are affected greatly by the uncertainty of the non-structural factors and boundary condition, especially the interference of the environment.
The temperature difference between members is mainly caused by the difference of material thermal properties and geometry shape.
The temperature change affects elastic modulus, E, of concrete.
The temperature change affects boundary condition of structure.
Online since: May 2012
Authors: Zhong Qing Cheng, Ping Yang, Hai Bo Jiang
The settlement of subgrade and the inclination angle of foundation are affected by vertical load, overturning moment, foundation size and mechanical properties of subgrade soil.
Through calculation, we got the variations of settlement and inclination angle of foundation for these factors.
Table 1 Influences of factors on settlement Vertical load [N] Settlement [m] Foundation width[m] Settlement [m] Deformation modulus of subgrade [MPa] Settlement [m] 117879 0.00159 2.5 0.00144 10 0.00283 119879 0.00162 3 0.00158 12 0.00236 124879 0.00168 3.7 0.00178 14 0.00202 132173 0.00178 4 0.00188 15.9 0.00178 139879 0.00188 4.5 0.00205 18 0.00157 149879 0.00202 5 0.00222 20 0.00142 Table 2 Influences of factors on inclination angle of foundation Overturning moment [Nm] Inclination angle [*10-3] Foundation width [m] Inclination angle [*10-3] Deformation modulus of subgrade [MPa] Inclination angle [*10-3] 60000 0.355 2.5 2.035 10 0.998 80000 0.474 3 1.178 12 0.832 106028 0.628 3.7 0.628 14 0.713 150000 0.888 4 0.497 15.9 0.628 200000 1.184 4.5 0.349 18 0.554 300000 1.776 5 0.254 20 0.499 Conclusion Transfer matrix method is applied to the calculation and analysis of settlement and inclination of gravity foundation.
The factors that affect the settlement and inclination of foundation and their influences are analyzed.
Through calculation, we got the variations of settlement and inclination angle of foundation for these factors.
Table 1 Influences of factors on settlement Vertical load [N] Settlement [m] Foundation width[m] Settlement [m] Deformation modulus of subgrade [MPa] Settlement [m] 117879 0.00159 2.5 0.00144 10 0.00283 119879 0.00162 3 0.00158 12 0.00236 124879 0.00168 3.7 0.00178 14 0.00202 132173 0.00178 4 0.00188 15.9 0.00178 139879 0.00188 4.5 0.00205 18 0.00157 149879 0.00202 5 0.00222 20 0.00142 Table 2 Influences of factors on inclination angle of foundation Overturning moment [Nm] Inclination angle [*10-3] Foundation width [m] Inclination angle [*10-3] Deformation modulus of subgrade [MPa] Inclination angle [*10-3] 60000 0.355 2.5 2.035 10 0.998 80000 0.474 3 1.178 12 0.832 106028 0.628 3.7 0.628 14 0.713 150000 0.888 4 0.497 15.9 0.628 200000 1.184 4.5 0.349 18 0.554 300000 1.776 5 0.254 20 0.499 Conclusion Transfer matrix method is applied to the calculation and analysis of settlement and inclination of gravity foundation.
The factors that affect the settlement and inclination of foundation and their influences are analyzed.
Online since: January 2013
Authors: Feng Xian Qiu, Dong Ya Yang, Jin Hua Liu, Cai Hong Chen, Hao Zhao, Qing Wang
Optically active polyurethane is a kind of promising material; its chiroptical effect can be combined with good mechanical properties and abrasion resistance.
The physical properties of the PU.
Thermo-optic properties of the PU.
The thermo-optic coefficient of a polymer is the main factors to affect the driver power and response speed of the optical switch.
In addition to their optical loss, refractive index, and the thermo-optic coefficient of the polymers plays a vital role in dictating the device properties.
The physical properties of the PU.
Thermo-optic properties of the PU.
The thermo-optic coefficient of a polymer is the main factors to affect the driver power and response speed of the optical switch.
In addition to their optical loss, refractive index, and the thermo-optic coefficient of the polymers plays a vital role in dictating the device properties.
Online since: August 2013
Authors: Li Po Yang, Bing Qiang Yu
Among the many factors that affect the measurement of shape signal, the error of strip edge is one of the important factors to be considered.
Within the shape measuring roller, two magneto-elastic transducers with similar properties are installed at symmetrical 180o.
Smooth Treatment of Transverse Shape Distribution For the transient measurement shape curve in real time, it is influenced by many factors and not continuous.
Chinese Journal of Mechanical Engineering, Vol. 44 No. 8 (2008), p. 137-142
Journal of Mechanical Engineering, Vol. 47 No. 12 (2011), p. 56-61
Within the shape measuring roller, two magneto-elastic transducers with similar properties are installed at symmetrical 180o.
Smooth Treatment of Transverse Shape Distribution For the transient measurement shape curve in real time, it is influenced by many factors and not continuous.
Chinese Journal of Mechanical Engineering, Vol. 44 No. 8 (2008), p. 137-142
Journal of Mechanical Engineering, Vol. 47 No. 12 (2011), p. 56-61
Online since: May 2015
Authors: Petr Martínek, Pavel Podaný, Jana Míšková
The quality of the steel depends on additional factors which cannot be deduced from its grade number, e.g. the manufacturer and the processing route comprising smelting and melting, final annealing and the treatment of semi-finished products.
Fig 1a, b microstructure of the die with distinct carbide bands, c) crack propagating from the die surface through carbide bands Poor mechanical properties are found in materials which underwent an inadequate amount of working.
Final properties upon hardening are to great extent governed by the quenching (austenitizing) temperature.
According to literature [5], even small deviations from the prescribed austenitizing and tempering temperatures and from the cooling rate may have profound effect on the mechanical properties of the material.
The material is then treated in the temper brittleness region and is imparted poor mechanical properties and toughness in particular.
Fig 1a, b microstructure of the die with distinct carbide bands, c) crack propagating from the die surface through carbide bands Poor mechanical properties are found in materials which underwent an inadequate amount of working.
Final properties upon hardening are to great extent governed by the quenching (austenitizing) temperature.
According to literature [5], even small deviations from the prescribed austenitizing and tempering temperatures and from the cooling rate may have profound effect on the mechanical properties of the material.
The material is then treated in the temper brittleness region and is imparted poor mechanical properties and toughness in particular.
Online since: April 2020
Authors: Yan Hang Wang, Tao Han, Kun He, Cheng Kui Zu
It is found that viscosity is the key material intrinsic factor affecting neck-down process of glass tube.
Given its good mechanical, thermal and chemical properties, especially low thermal expansion coefficient (≤3.5×10-6/K), which is favor to withstand large temperature difference, high borosilicate glass exhibits excellent potential for preparing glass pipe, widely used in the fields of aviation, aerospace, solar energy, instrument and lighting, and so on[1-3].
At present, the preparation of high borosilicate glass tube in China generally is the mechanical manufacturing method, but the key technical indicators of the domestic high borosilicate glass tube such as the apparent quality and dimensional accuracy are far from the foreign countries due to the limited manufacturing equipment and poor process maturity, which makes it not meet the requirements of high-tech applications.
As one of the key physical properties of glass, viscosity can directly reflect the structure of the melt, so it has always been a research hotspot of glass thermodynamics [4].
Therefore, it can be considered that the viscosity is the intrinsic factor affecting the neck-down process of the glass tube.
Given its good mechanical, thermal and chemical properties, especially low thermal expansion coefficient (≤3.5×10-6/K), which is favor to withstand large temperature difference, high borosilicate glass exhibits excellent potential for preparing glass pipe, widely used in the fields of aviation, aerospace, solar energy, instrument and lighting, and so on[1-3].
At present, the preparation of high borosilicate glass tube in China generally is the mechanical manufacturing method, but the key technical indicators of the domestic high borosilicate glass tube such as the apparent quality and dimensional accuracy are far from the foreign countries due to the limited manufacturing equipment and poor process maturity, which makes it not meet the requirements of high-tech applications.
As one of the key physical properties of glass, viscosity can directly reflect the structure of the melt, so it has always been a research hotspot of glass thermodynamics [4].
Therefore, it can be considered that the viscosity is the intrinsic factor affecting the neck-down process of the glass tube.
Online since: September 2012
Authors: Jun Wang, Huai Zhong Li, Xiu Bing Jing, Bing Wu
Mian et al. [3] studied the dominant factors towards identifying size effect to optimise surface quality in their recent work.
The motivation of this study is to identify the factors that affect cutting performance and results in micro milling operations.
The factors include workpiece material property and tool diameter.
The diverse material properties such as hardness can result in the variation of cutting performance, such as surface quality and cutting forces in machining processes.
Surface roughness on brass cutting tests with 0.9 mm diam. tool, 0.05 mm depth of cut Based on these results, material properties and tool diameter have strong influence on surface quality in the micro milling.
The motivation of this study is to identify the factors that affect cutting performance and results in micro milling operations.
The factors include workpiece material property and tool diameter.
The diverse material properties such as hardness can result in the variation of cutting performance, such as surface quality and cutting forces in machining processes.
Surface roughness on brass cutting tests with 0.9 mm diam. tool, 0.05 mm depth of cut Based on these results, material properties and tool diameter have strong influence on surface quality in the micro milling.
Online since: March 2014
Authors: Jin Hui Yao, Hang Xu, Tie Ping Wei, Xiao Xiang Yang
The Additional Side Force on the Force Transducer in the Combinatorial Load Cell
Tieping Wei1,a, Xiaoxiang Yang1,b, Jinhui Yao2,c , Hang Xu2,d
1College of Mechanical Engineering and Automation,Fuzhou University, China
2Fujian Province Institute of Metrology, Fuzhou, China
awtp12312@sina.com,byangxx@fzu.edu.cn,cyaojinhui2000@126.com,
dfjjl-xh@126.com
Keywords: combinatorial load cell; spherical plain thrust bearing; rotation effect; additional side force
Abstract: By the reason of the additional side force acting on the force transducers affecting the rotation effect of the combinatorial load cell,the paper describes the effect of the spherical plain thrust bearing’s structure on the additional side force.
Also the difference between the three force signals from the combinatorial force transducer revealed the asymmetric properties of a deadweight force standard machine.
Therefore, the friction coefficient is one of factors which might affect the force transfer in the combinatorial load cell.
Also the difference between the three force signals from the combinatorial force transducer revealed the asymmetric properties of a deadweight force standard machine.
Therefore, the friction coefficient is one of factors which might affect the force transfer in the combinatorial load cell.