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Online since: June 2011
Authors: Roshasnorlyza Hazan, Adilah Abdul Khalil, Ira Maya Sophia Nordin, Ishak Mat, Srimala Sreekantan
It was clear that rough surface morphology was important factor for better cell-metal interaction.
Surface topography can affect the cell migratory significantly and adhesion behavior on implant surfaces. 1.
INTRODUCTION Over the past several years titanium (Ti) and its alloys have become a focus of considerable interest as they possess unique properties relevant to implant materials application because of their good mechanical properties and biocompatibility.
Surface topography can affect the cell migratory significantly and adhesion behavior on implant surfaces.
Mabuchi, Processing and mechanical properties of autogenous titanium implants materials, Journal of Materials Science: Materials in Medicine, Vol. 13 (2002) 397-401
Surface topography can affect the cell migratory significantly and adhesion behavior on implant surfaces. 1.
INTRODUCTION Over the past several years titanium (Ti) and its alloys have become a focus of considerable interest as they possess unique properties relevant to implant materials application because of their good mechanical properties and biocompatibility.
Surface topography can affect the cell migratory significantly and adhesion behavior on implant surfaces.
Mabuchi, Processing and mechanical properties of autogenous titanium implants materials, Journal of Materials Science: Materials in Medicine, Vol. 13 (2002) 397-401
Online since: March 2011
Authors: Jiu Hua Xu, Guo Sheng Geng, B. Yang, L.L. Su, S.N. Galyshev
It is well known for its outstanding mechanical properties such as high strength and corrosion resistance, particularly at elevated temperatures.
On the other hand, Inconel 718 is also known to be one of the most difficult-to-cut materials, and the properties responsible for the poor machinability of it are as follows [1-3].
A major part of Inconel 718’s strength is maintained during machining due to its high-temperature properties, resulting in a large cutting force.
Due to the above mentioned machining properties, especially the large cutting force and cutting force fluctuation, the quality of the machined surface of Inconel 718 may be deteriorated [7, 8].
The factors and levels of different cutting tools are shown in table 4.
On the other hand, Inconel 718 is also known to be one of the most difficult-to-cut materials, and the properties responsible for the poor machinability of it are as follows [1-3].
A major part of Inconel 718’s strength is maintained during machining due to its high-temperature properties, resulting in a large cutting force.
Due to the above mentioned machining properties, especially the large cutting force and cutting force fluctuation, the quality of the machined surface of Inconel 718 may be deteriorated [7, 8].
The factors and levels of different cutting tools are shown in table 4.
Online since: September 2016
Authors: D.S. Robinson Smart, S. John Alexis, P.S. Samuel Ratna Kumar
Introduction
Carbon nanotube is one of the major reinforcement of composites due to their significant mechanical, electrical and thermal properties [1].
Compare to the PMC a little researches have been carried out in Metal Matrix Composite (MMC) reinforced with CNT, because of the carbide formation in the material which will affect the mechanical properties [3-8].
CNT volume fraction, distribution, aspect ratio, size orientation and interfacial bonding play a major role in composite mechanical properties [3].
Small but strong: a review of the mechanical properties of carbon nanotube–polymer composites.
Goddard III, "Energetics, Structure, Mechanical and Vibrational Properties of Single Walled Carbon Nanotubes (SWNT)", Nanotechnology 9 184-191 (1998)
Compare to the PMC a little researches have been carried out in Metal Matrix Composite (MMC) reinforced with CNT, because of the carbide formation in the material which will affect the mechanical properties [3-8].
CNT volume fraction, distribution, aspect ratio, size orientation and interfacial bonding play a major role in composite mechanical properties [3].
Small but strong: a review of the mechanical properties of carbon nanotube–polymer composites.
Goddard III, "Energetics, Structure, Mechanical and Vibrational Properties of Single Walled Carbon Nanotubes (SWNT)", Nanotechnology 9 184-191 (1998)
Online since: September 2014
Authors: Rui Qing Hao, Ping Cao
Introduction
Due to the human and natural factors, the stress balance of rock mass in the deep area is changed, which will lead to the elastic strain energy of rock is released.
And they got the mechanical properties of rock and damage models.
FENG X T [6, 7] analyzed the mechanical property of rock under the action of water by experiments.
Because these methods can reflect the mechanical properties of materials and get reliable results, this paper will use finite element method to analyze the mechanical properties of jointed rock.
Table 1 shows the mechanical parameters of model.
And they got the mechanical properties of rock and damage models.
FENG X T [6, 7] analyzed the mechanical property of rock under the action of water by experiments.
Because these methods can reflect the mechanical properties of materials and get reliable results, this paper will use finite element method to analyze the mechanical properties of jointed rock.
Table 1 shows the mechanical parameters of model.
Online since: March 2013
Authors: Dan Wang, Hui Xin Wang, Fan Gu, Jia Quan Sun
Submarine pipeline adopts buried form generally, but under the influence of multiple factors such as large-area seabed scour, soil collapse, soil liquefaction, etc., submarine pipeline can be bare or even occur local suspended span phenomenon.
Based on excellent comprehensive properties of composite pipe, domestic and overseas scholars have successively carried out study on viscoelastic theory for ploymer matrix composite material with various structures, static/quasi-static mechanical response characteristics, structural stability, interface characteristics, etc. [4-7].
From current domestic and overseas study status, there are few studies on the mechanical response of submarine flexible pipe.
As flexibility of submarine flexible pipe, internal pressure and local suspended span under the action of wave-current hydrodynamic forces, which is the main factor causing the failure of submarine flexible pipeline?
When submarine pipeline can be regarded as small objects that can not affect the original flow field pattern, scattering effect and free surface effect can be ignored.
Based on excellent comprehensive properties of composite pipe, domestic and overseas scholars have successively carried out study on viscoelastic theory for ploymer matrix composite material with various structures, static/quasi-static mechanical response characteristics, structural stability, interface characteristics, etc. [4-7].
From current domestic and overseas study status, there are few studies on the mechanical response of submarine flexible pipe.
As flexibility of submarine flexible pipe, internal pressure and local suspended span under the action of wave-current hydrodynamic forces, which is the main factor causing the failure of submarine flexible pipeline?
When submarine pipeline can be regarded as small objects that can not affect the original flow field pattern, scattering effect and free surface effect can be ignored.
Online since: June 2013
Authors: Yin Xing Li, Chun Ming An
Simulation Analysis of factors shaping the auto crash in the manufacturing process is the introduction of crash simulation models (mainly refers to the stamping process) affect the material properties of the crash simulation analysis techniques.
Domestic scholars studied the typical stamping parts forming factors impact the results of the crash, but the results of these studies illustrate the effect of directly forming factors stampings case of vehicle crash [6].
Stamping direction selection is reasonable, directly affects the quality and complexity of the mold structure stampings.
[8] Liang Liang, Han Liqiang , Shao Yang , etc. impact on the design of the door material properties and structural analysis [J].
Mechanical design and manufacturing . 2007 ( 1 ) :70 -73
Domestic scholars studied the typical stamping parts forming factors impact the results of the crash, but the results of these studies illustrate the effect of directly forming factors stampings case of vehicle crash [6].
Stamping direction selection is reasonable, directly affects the quality and complexity of the mold structure stampings.
[8] Liang Liang, Han Liqiang , Shao Yang , etc. impact on the design of the door material properties and structural analysis [J].
Mechanical design and manufacturing . 2007 ( 1 ) :70 -73
Online since: September 2013
Authors: Jiří Sís, Bedřich Votava
All types of corrosion in crude oil pipelines are affected by pH of crude oil, temperature and pressure in pipeline as well.
Many cases of pipeline failures caused by external factors like external loading or external corrosion processes also have been documented.
Corrosion rate is significantly affected by temperature and pressure as well.
The inclusions of that length could have a negative effect on mechanical properties of the tank.
- Both corrosion processes preferably occurred at the same place – in basic material nearby heat affected zone of weld joint
Many cases of pipeline failures caused by external factors like external loading or external corrosion processes also have been documented.
Corrosion rate is significantly affected by temperature and pressure as well.
The inclusions of that length could have a negative effect on mechanical properties of the tank.
- Both corrosion processes preferably occurred at the same place – in basic material nearby heat affected zone of weld joint
Online since: September 2016
Authors: N.V. Bekrenev, Irina V. Zlobina, G.K. Muldasheva
Based on the analysis of trends in the development of aviation and rocketry and ground transportation, the prospect of use of high-alloy steels, and titanium-based alloys with high strength, heat-and corrosion-resistant properties is established.
The working hypothesis of increase of efficiency of the ultrasonic drilling of small diameter holes proposes to consider correlation frequency supplied to the ultrasonic instrument, structural parameters and physical and mechanical properties of the material and to drive oscillations in the plane of the main cutting edges which would significantly reduce the magnitude of the oscillation amplitude.
Intorduction The general trend of modern production development , along with the widespread introduction of automation and computer technology application is implementation of new structural materials with a variety of physical, chemical and mechanical properties.
High elastic properties cause an increase in friction moment, the heating of the working area and, as a consequence , the reduction in resistance of the cutting edges and the entire instrument.
At the first stage there was examined the effect of structure and physico-mechanical properties of materials and the frequency of the ultrasound to the processes of indentation and microcutting of surface materials.
The working hypothesis of increase of efficiency of the ultrasonic drilling of small diameter holes proposes to consider correlation frequency supplied to the ultrasonic instrument, structural parameters and physical and mechanical properties of the material and to drive oscillations in the plane of the main cutting edges which would significantly reduce the magnitude of the oscillation amplitude.
Intorduction The general trend of modern production development , along with the widespread introduction of automation and computer technology application is implementation of new structural materials with a variety of physical, chemical and mechanical properties.
High elastic properties cause an increase in friction moment, the heating of the working area and, as a consequence , the reduction in resistance of the cutting edges and the entire instrument.
At the first stage there was examined the effect of structure and physico-mechanical properties of materials and the frequency of the ultrasound to the processes of indentation and microcutting of surface materials.
Online since: October 2011
Authors: Guan Yi Chen, Guang Rui Liu
Although the biodiesel has lots of merits, there are many disadvantages, such as high cold filter plugging point destroying the low-temperature flow property, the presence of unsaturated double bond decreasing the oxidation stability, and pigments affecting the color [22, 23].
According to range magnitude of the factors surveyed, temperature was the primary factor, while the amount of activated clay(ACY) was the least important factor.
Table 4 listed the properties of decolored biodiesel.
The activated clay (ACY) amount, decoloring temperature and decoloring time were selected as three factors to design the three factors and three levels orthogonal test.
According to range magnitude of the factors surveyed, the order of the effect on DR of the factors was temperature > operation time > activated clay (ACY) amount.
According to range magnitude of the factors surveyed, temperature was the primary factor, while the amount of activated clay(ACY) was the least important factor.
Table 4 listed the properties of decolored biodiesel.
The activated clay (ACY) amount, decoloring temperature and decoloring time were selected as three factors to design the three factors and three levels orthogonal test.
According to range magnitude of the factors surveyed, the order of the effect on DR of the factors was temperature > operation time > activated clay (ACY) amount.
Online since: January 2012
Authors: Xin Xi Liu, Qi Shu Bai, Zi Han Yang, Yuan You Xia
Roadway support is a key technology in coal mining, and the mechanical properties of surrounding rock directly affect the stability of roadways and their supporting structure.
The quantity value of the transient strain is related to the mechanical properties of rock materials, therefore, elastic elements should be included in the creep model
The model with the speedup creep original script is usually adopted to describe those mechanical behaviors, for example, adopting index or power function.
According to the above analysis, it is finally determined to adopt Burgers Constitutive Model as to describe the mechanical behavior, which is the four-element one in Fig. 3.
Reference [1]Lama R D,Vutukuri V S.Handbook on Mechanical Properties of Rocks,Testing Techniques and Results, Volume III[M].
The quantity value of the transient strain is related to the mechanical properties of rock materials, therefore, elastic elements should be included in the creep model
The model with the speedup creep original script is usually adopted to describe those mechanical behaviors, for example, adopting index or power function.
According to the above analysis, it is finally determined to adopt Burgers Constitutive Model as to describe the mechanical behavior, which is the four-element one in Fig. 3.
Reference [1]Lama R D,Vutukuri V S.Handbook on Mechanical Properties of Rocks,Testing Techniques and Results, Volume III[M].