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Online since: November 2012
Authors: Thomas Gerber, Cornelia Ganz, S. Lenz, W. Xu, F. Maier, B. Frerich
In this process biomaterials with negatively charged surfaces promote the pre-activation of the Hageman factor – an enzyme involved in clotting.
That means that the generated putty should not affect vascularization at defect site and matrix change within the material.
After the optimization of the handling properties a hydrogel composition of 6 % PVP, 3 % silica and 91 % water gave the best mechanical properties.
That means that the generated putty should not affect vascularization at defect site and matrix change within the material.
After the optimization of the handling properties a hydrogel composition of 6 % PVP, 3 % silica and 91 % water gave the best mechanical properties.
Online since: May 2012
Authors: Dong Bing Zhang, Guo Liang Zen, Xiang Lin Jiang
Tan[5] have analyzed vibration character of simple beam under car loads, and got frequency computation method of simple beam under car loads.Frequency can reflected the whole structure’s properties, the field test can only be accurate to obtain the structure of the low-order frequency, thus limiting the application and promotion of structural damage identification method based on frequency, but the frequency is the basic characteristics in all structural properties character.
(2) The structure frequency is visibly affected by added mass whose quality is smaller than the bridge’s; and the effect of added mass are the same with stiffness damage.
When using monitoring data of bridge to analyze structural modal parameters of large-span steel truss bridge, the influence of vehicle load must be considered as a factor of added mass to the structure character.
Added Mass Method of Mechanical Vibration Modal Analysis[J].
(2) The structure frequency is visibly affected by added mass whose quality is smaller than the bridge’s; and the effect of added mass are the same with stiffness damage.
When using monitoring data of bridge to analyze structural modal parameters of large-span steel truss bridge, the influence of vehicle load must be considered as a factor of added mass to the structure character.
Added Mass Method of Mechanical Vibration Modal Analysis[J].
Online since: March 2006
Authors: Ung Yu Paik, Jae Young Kwon, Hyung Jun Jang, Yeon-Gil Jung
For which understanding might be obtained by focusing on TBCs system variables:
mechanical properties and damage resistance of each interface in the vicinity of the TGO [4].
Therefore, the properties, such as thermal behavior, residual stress, and damage resistance, is important to improve the reliability and lifetime of TBCs.
As a result, the formation of the TGO layer can affect the reliability and lifetime of TBCs and the control of the TGO growth is most important factor in TBCs failure mechanism.
Therefore, the properties, such as thermal behavior, residual stress, and damage resistance, is important to improve the reliability and lifetime of TBCs.
As a result, the formation of the TGO layer can affect the reliability and lifetime of TBCs and the control of the TGO growth is most important factor in TBCs failure mechanism.
Online since: October 2006
Authors: M. Stasiek, Andreas Öchsner
¨Ochsner1,2,b
1Centre for Mechanical Technology and Automation, University of Aveiro, Aveiro, Portugal
2Department of Mechanical Engineering, University of Aveiro, Aveiro, Portugal
amstasiek@mec.ua.pt, baoechsner@mec.ua.pt
Keywords: Segregation, Fick's Law, Non-Linearity, Mathematical Modelling, Numerical
Modelling, Finite Difference Method
Abstract.
The presence of solute atoms at internal metal-oxide interfaces influences the physical properties of the interfaces and this, in turn, may affect the bulk properties [3].
The material depending factor c = Mtot/(NA · ρtot · Vtot) in Eq. (1) ensures unit consistency for the general source expression γO [5, 6] which involvesadsorption (index a) and desorption (index d) at time t as: γO = (1−Θ)κ·ψO·νa exp à − E0a RT!
Structure-Property Relationship of MetalCeramic Interfaces (Gordon & Breach, USA 1996)
The presence of solute atoms at internal metal-oxide interfaces influences the physical properties of the interfaces and this, in turn, may affect the bulk properties [3].
The material depending factor c = Mtot/(NA · ρtot · Vtot) in Eq. (1) ensures unit consistency for the general source expression γO [5, 6] which involvesadsorption (index a) and desorption (index d) at time t as: γO = (1−Θ)κ·ψO·νa exp à − E0a RT!
Structure-Property Relationship of MetalCeramic Interfaces (Gordon & Breach, USA 1996)
Online since: March 2013
Authors: Cheng Hua Wang, Mei Na Zhang
But, the bearing behavior of bored piles is complicate and inlfuenced by many factors, such as type, length, cross section shape and size of the piles, pile process and quality, classification of the foundation soils and physical and mechanical properties of the soils, etc..
In short, if the given data do not display physical properties, the prediction ones based on it will not as well.
For the materials of pile loading tests involved in this paper, these had hardly affected the load-settlement relationship of the piles.
The graph shows that the revised prediction error has been decreased obviously, and eliminated some factors like individual pile with poor perfusion quality or difference between soil from the boring place and pouring pile place, the modified results meet the engineering practical needs in determination of the ultimate bearing capacity of piles, and are able to reflect the pile foundation bearing behavior to a certain extent.
The improved grey model only pays attention on load and settlement data, without considering many complicated influence factors, such as the loading time, soil characteristics, construction quality and so on, and needs more consideration of such factors in further improvement of this model.
In short, if the given data do not display physical properties, the prediction ones based on it will not as well.
For the materials of pile loading tests involved in this paper, these had hardly affected the load-settlement relationship of the piles.
The graph shows that the revised prediction error has been decreased obviously, and eliminated some factors like individual pile with poor perfusion quality or difference between soil from the boring place and pouring pile place, the modified results meet the engineering practical needs in determination of the ultimate bearing capacity of piles, and are able to reflect the pile foundation bearing behavior to a certain extent.
The improved grey model only pays attention on load and settlement data, without considering many complicated influence factors, such as the loading time, soil characteristics, construction quality and so on, and needs more consideration of such factors in further improvement of this model.
Online since: October 2018
Authors: A.L. Svistkov, A.Yu. Belyaev
A carbonized layer with important for medical application properties is formed on the surface of the material as a result of treatment [6, 7].
In addition to physicochemical properties the important characteristic of the layer is the relief and roughness of the treated surface [10, 11].
This is the result of the fact that we considered the polymer as an elastic medium and did not take into account its dissipative properties.
Mechanical properties of a bioengineering prosthesis of a trachea based on a synthetic ultrafiber matrix. // Russian Journal of Biomechanics, 2016, Vol. 20, No. 2, pp. 116-123
Polymeric endoaortic paving: Mechanical, thermoforming, and degradation properties of polycaprolactone/polyurethane blends for cardiovascular applications // ACTA BIOMATER. 2011. №7. p. 287-294
In addition to physicochemical properties the important characteristic of the layer is the relief and roughness of the treated surface [10, 11].
This is the result of the fact that we considered the polymer as an elastic medium and did not take into account its dissipative properties.
Mechanical properties of a bioengineering prosthesis of a trachea based on a synthetic ultrafiber matrix. // Russian Journal of Biomechanics, 2016, Vol. 20, No. 2, pp. 116-123
Polymeric endoaortic paving: Mechanical, thermoforming, and degradation properties of polycaprolactone/polyurethane blends for cardiovascular applications // ACTA BIOMATER. 2011. №7. p. 287-294
Online since: June 2010
Authors: Hiroyuki Sasahara, Erween Abdul Rahim
Rahim
1,2,a
and Hiroyuki Sasahara1,b
1
Graduate School of Bio-Applications & System Engineering,
Tokyo University of Agriculture and Technology, Koganei, Tokyo, Japan
2
Faculty of Mechanical & Manufacturing Engineering,
Universiti Tun Hussein Onn Malaysia, Batu Pahat, Johor, Malaysia
a
erween@uthm.edu.my,
b
sasahara@cc.tuat.ac.jp
Keywords: MQL; Surface integrity; Ti-6Al-4V; High speed drilling
Abstract.
They concluded that machining parameters (cutting speed, feed rate etc.) significantly affected the changes of the surface properties.
These factors could contribute to the improvement in surface roughness values.
However, as the cutting speed increases (Figs. 3 (i) and (ii) and 3 (v) and (vi)), the surface damage decreases in terms of severity the total area affected.
The depth of this work hardening layer is vary depending on cutting parameters (i.e cutting speed, feed rate, depth of cut) as well as mechanical and thermal interaction.
They concluded that machining parameters (cutting speed, feed rate etc.) significantly affected the changes of the surface properties.
These factors could contribute to the improvement in surface roughness values.
However, as the cutting speed increases (Figs. 3 (i) and (ii) and 3 (v) and (vi)), the surface damage decreases in terms of severity the total area affected.
The depth of this work hardening layer is vary depending on cutting parameters (i.e cutting speed, feed rate, depth of cut) as well as mechanical and thermal interaction.
Online since: July 2021
Authors: Vladimir A. Nosenko, Valeria E. Puzyrkova, Aleksandr V. Fetisov, Sergey V. Nosenko, Viktor G. Karpov
In this regard, the study of the properties of the abrasive material surface layer during grinding is a highly relevant scientific issue.
These factors have a significant impact on the interaction conditions in the contact zone, on the wear of the grain tip and the formation of the wear area.
Factors affecting the surface roughness in the deep grinding of titanium alloys.
Improving abrasive tool cutting properties with the use of impregnators that emit chemically active gas media during thermal decomposition.
Conducting and reflecting properties of nanometer-width films of various metals.
These factors have a significant impact on the interaction conditions in the contact zone, on the wear of the grain tip and the formation of the wear area.
Factors affecting the surface roughness in the deep grinding of titanium alloys.
Improving abrasive tool cutting properties with the use of impregnators that emit chemically active gas media during thermal decomposition.
Conducting and reflecting properties of nanometer-width films of various metals.
Online since: January 2014
Authors: Yulianto Sulistyo Nugroho, Muhammad Andira Mulia Siregar
Types of sample used in this experiment is the lubricating oil with the specification of synthetic thermal properties obtained from the MSDS of the lubricating oil that is shown in Table 1.
One of the important points that can be drawn from this experiment is the radiation from the environment that affect fire growth.
So, environmental factors become an important consideration that should not be forgotten.
Conclusion This study obtained some of the following conclusions: · A cone calorimeter study provides ignition properties of lubricating oil sample at various temperatures
Bachelor Thesis, Mechanical Engineering Department, University of Indonesia (in Bahasa Indonesia), 2012.
One of the important points that can be drawn from this experiment is the radiation from the environment that affect fire growth.
So, environmental factors become an important consideration that should not be forgotten.
Conclusion This study obtained some of the following conclusions: · A cone calorimeter study provides ignition properties of lubricating oil sample at various temperatures
Bachelor Thesis, Mechanical Engineering Department, University of Indonesia (in Bahasa Indonesia), 2012.
Online since: November 2010
Authors: Yi Min Zhu, Guo Liang Liu, Zhi Jun Ma, Xin Fang
Several factors have been affected on conglobation of the powder such as precipitation reaction temperature, reaction time, mechanical stirring rate, and organic additives [5-7].
Therefore, in this work, the purpose is to prepare MgO nano-powdere with different size from 30nm to 100nm, and to investigate its infrared absorption properties in order to find out the relationship between particle size to its infrared absorption properties.
Results and Discussion Effect of mechanical stirring rate on the shapes and sizes of nano-MgO particles.
(2) It can be indicated from formula (2) that the direct factor impacts the molecule vibration frequency is the constant of chemical bond force k and equivalent relative atomic mass μ, for the same substance, the position shift of infrared spectrum absorption peaks is related to the change of chemical bond force constant.
Therefore, in this work, the purpose is to prepare MgO nano-powdere with different size from 30nm to 100nm, and to investigate its infrared absorption properties in order to find out the relationship between particle size to its infrared absorption properties.
Results and Discussion Effect of mechanical stirring rate on the shapes and sizes of nano-MgO particles.
(2) It can be indicated from formula (2) that the direct factor impacts the molecule vibration frequency is the constant of chemical bond force k and equivalent relative atomic mass μ, for the same substance, the position shift of infrared spectrum absorption peaks is related to the change of chemical bond force constant.