Search Options

Sort by:

Sort search results by

Publication Type:

Publication Type filter

Open access:

Publication Date:

Periodicals:

Periodicals filter

Search results

Online since: March 2014
Authors: Ching Wen Lou, Jia Horng Lin, Ming Chun Sie, Yung Yu Chang, Wen Cheng Chen
SEM observation indicates that the temperature of a saturated vapor pressure does not affect the formation of the CPC scaffolds’ structure.
Like other calcium phosphates, CPC has low mechanical properties.
This study aims to examine the influence of different reaction temperatures on the structure and chemical properties of the CPC scaffolds.
Hydroxyapatite is a chief material of human bones, and it has good osteophilic properties and osteoconduction, and as a result is a good substitute for impaired bones.
SEM images exclude the temperature of saturated vapor pressure as a factor that influences the forming structure.
Online since: February 2015
Authors: Yang Yu, Wei Chao Zhang, Ya Rong Wang
., including inherently low irradiation-induced activity, good mechanical properties, high thermal conductivity and good resistance to irradiation-induced swelling and damage [1-3].
One of the main factors contributing to these challenges is the brittle compounds formation.
Another of the main factors is attributed to the physical mismatch of the combination of materials and processes used.
The major mechanical and physical properties were listed in table 2.
Effect of precipitation and solution behavior of impurities on mechanical properties of low activation vanadium alloy, J.
Online since: December 2013
Authors: Yong Jun Zhang, Jing Tao Han, Hui Zhang, Yuan Dong, Jie Ren Hu
The analysis of microstructure at the defect Due to the difference in the mechanical responses of austenite and ferrite under hot working conditions can lead to the formation of edge cracks or a poor surface finish.
The analysis on the factors influencing the sticking Sticking is not only affected by the microstructure and high temperature mechanical properties of rollers and rolled piece, but associate with rolling parameters such as rolling temperature, rolling speed, reduction, technological lubrication as well as the number and distribution of high temperature oxide.
To improve the rolling temperature can favorably affect the sticking. it does not generate higher volume fraction of oxides, but can induce infiltration-type oxide transform into layer type oxide, which can more significantly improve the high temperature hardness than the former.
Furthermore, on the premise of guaranteeing mechanical properties of the product, the decrease of the reduction appropriately can also reduce the incidence of sticking. 4.
Online since: February 2007
Authors: Seiji Ban, Masahiro Nawa, Hideo Sato, H. Nakanishi, Y. Suehiro
Introduction Previous reports demonstrated that yttria stabilized tetragonal zirconia polycrystals (Y-TZP) and the zirconia/alumina nanocomposite stabilized with cerium oxide (Ce-TZP/Al2O3 nanocomposite) have excellent mechanical properties and can be applied to dental restoratives [1].
Especially, the Ce-TZP/Al2O3 nanocomposite showed excellent mechanical durability for low temperature degradation in various water-based condition encountered in dentistry and high reliability for dental restoratives such as all-ceramic bridges [1,2].
It is known that the mechanical properties of zirconia frame were affected by these treatments [3,4].
Furthermore, these surface finish affects the low temperature degradation of zirconia [5].
The two-way analysis of variance (ANOVA) for each material was applied with the biaxial flexure strength in MPa as a dependent variable, and sandblasting pressure and heat treatment as factors.
Online since: June 2013
Authors: Li Ma, Huan Yun Wang, Jian Xin
Also allows the motor load starting as normal, mechanical overloading.
Electrical Equipment Failure Caused a Sudden Some Objective Factors The electrical heating equipment, high-current device electric power, electric contact points poor contact, arc these factors Heating of electrical equipment and electrical failures relationship From the energy point of view, is the root cause of the electrical equipment for heating the energy loss.
Poor electrical and electrical failure There are many reasons for poor electrical connection formed, the conductive material in the repair process or long-term wear, material properties change, the electrical contact performance deterioration of electrical contact form changes, resulting in increased contact resistance.
Environmental effects, temperature, high humidity, acids, bases, oxides, chlorine and other chemicals that affect accelerated chemical etching to increase the contact resistance.
In summary, rooted generate electrical fault circuit parameters change due to various factors, troubleshooting is based on the failure phenomenon using a variety of logic and experience accumulated gradually sort out, and ultimately to identify the point of failure, I hope this paper to find an electrical fault A little help.
Online since: August 2013
Authors: Yang Luo, Heng Liu, Tie Hang Wang
It concluded the present work on the two main factors which influence the bearing capacity of rock-socketed pile most.
In summary, the factors affecting the capability of rock-socketed pile can be divided into two aspects: in one hand, pouring concrete under water may lead to the problem of pile capability and geometric dimensions, such as eduction, necking, broken, etc; in the other hand, the problem of pile side soil and bottom sediment caused by rock characteristic, hole wall roughness and mud quality problems, etc. 2.1 Influence of rock-socketed depth With the research work goes deeper, scholars find that increasing the length can not always be effective to improve the capacity of pile.
It is a hot issue simulating the mechanical behavior of pile-rock interface under construction factors. 3.3 failure mechanism of rock-socketed pile The destruction and instability phenomena of rock-socketed pile often occur.
It concluded the present work on the two main factors which influence the bearing capacity of rock-socketed pile most.
Finite element analysis of load-bearing properties of large diameter rock-socketed single pile[J].
Online since: September 2011
Authors: Jun Wei Han, Zheng Mao Ye, Peter O. Ogbobe, Hong Zhou Jiang, Chi Fu Yang
The result further reveal that the dynamics coupling property of the system increase with the frequency and reach the maximum value at the natural frequency.
At a frequency higher than the natural frequency the coupling property decreases.
From (1), the coupling effects can be from these three factors: the mass matrix, the Coriolis /centrifugal and the gravitational effects.
Neglecting Coriolis/centripetal and gravity factors in (1), it can be simplified as (2) Gravity will be compensated in the Matlab/Simulink simulation model while Coriolis/centripetal will be treated as external disturbances.
The actuator forces, will affect the platform coordinates, through the transposed Jacobian, and the platform velocity will have to be projected along actuators by using, is the 6×1 acceleration vector of the actuator length changes.
Online since: June 2012
Authors: Wei Dong, Liu Yu
Introduction Image testing methods to analyze the material properties and defect distribution is the most commonly used method in Ultrasonic testing.
At present, judgment work mostly accomplished by manual according to certain criteria in most of the actual testing, judgment results would affected by subjective factors.
Ultrasonic C-Scan imaging results are generally expressed as a plane distribution form of the sample information, the signal amplitude variation reflect the factors of the defects within the sample.
The actual effect of defect analyzing is better in the material properties are basically the same conditions.
Chinese Journal of Mechanical Engineering, Vol. 44(2008), p.10 [2] Y.
Online since: December 2010
Authors: Feng Xia Li
It is analyzed that the preload of bolt, contact pressure of the components and the other components’ mechanical properties by nonlinear analysis.
Introduction Beam-to-column connections are integral element of a steel frame, and their behavior affects its overall performance under loading.
Because of the complexity of connectivity features, finite element analysis of simulation considered such factors as the pre-tightening force of bolt, bolt hole extrusion, all the frictional contact, geometric nonlinearity, material nonlinearity and contact nonlinear.
According to Specification of Testing Methods for Earthquake Resistant Building (GBJ101-96), first mechanical behavior of beam-column connection is calculated under unidirectional load.
There are two factors which influence contact pressure.
Online since: October 2012
Authors: Ming Zhang, Xu Dong Wang, Ping Liu, Hu Yuan Zhang, Qing Lin Guo, Lin Yi Zhao
The physical and mechanical properties and building technology of the earth determines the vulnerability of the earthen architecture sites.
The domestic scholars have conducted the systematic research on the classification and mechanism of diseases of the cultural relics. [5-6] However, many existing studies are mainly in the qualitative description without the scientific quantitative research data, such as the issues concerning the control of the threshold level of the factors affecting the cause and development of diseases of the sites, the prediction of the development mode of diseases under certain conditions, the scientific explanation of the cause mechanism of different types of diseases, etc.
For the earthen architecture sites, the properties of the construction materials have been confirmed, so it can only start from the structural form.
However, the relevant natural factors require the scientific and systematic researches through the technical means.
In the disease mechanism research of the earthen architecture sites, the current researches focus on the soil-water interaction, water and salt transport, thermodynamic properties, and wind erosion mechanism.
Showing 16211 to 16220 of 25950 items