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Online since: July 2014
Authors: MIN Li, Bing Li
Establishing travelers satisfaction evaluation indicators system of passenger station External factors affecting travelers satisfaction has a lot, Including natural attributes travelers, social attributes, travel expenses sources, distribution of passengers, their mental capacity and ability to pay.
There are a lot Internal factors affecting travelers satisfaction, the main factors are from the internal transport, It also play a very important role in transportation enterprises to ameliorate their own problems .
We must integrate into external and internal factors and analysis of these factors on passenger satisfaction evaluation system.
Due to passenger satisfaction evaluation with special properties of multiple indicators and multiple level, it needs to clear construction principles of the travelers satisfaction evaluation index system[3],then analyzes the characteristics of passenger satisfaction based on the factors affecting travelers satisfaction evaluation.
The factors setare divided into several groups, such that , when (),we called the first stage of the factors set.
Online since: July 2011
Authors: Naoya Miyajima, Koichi Nakashima, Yasuo Mase, Kazuki Maeda, Ichiro Fujii, Shigehito Shimizu, Petr Pulpan, Satoshi Wada
Their piezoelectric properties were measured and discussed a relationship between porosity and piezoelectric properties.
Moreover, another factors became important for sensor application such as accelerator, i.e., sensor’s weight itself.
The dielectric properties of the ceramics were measured at 300 Hz and 100 kHz using LCR meter (Agilent Technologies HP4284A).
Next, all ceramics were sized into 2x2x0.4 mm3, and electric properties were measured.
Summary Porous KN and KN+CB ceramics were prepared in this study, and discussed a relationship between porosity and piezoelectric properties.
Online since: December 2007
Authors: Orhan Çakır
It was observed that etching temperature for any etchant concentration is important factor in case of depth of etch and surface roughness.
This material is recently established an important place for microelectromechanical systems (MEMS) due to its various mechanical and physical properties.
The chemical properties of material are given Table 1.
Properties of FeCl3 etchant Baumé degree [°Bé] Specific gravity [SG] Molarity [Mol] 32 1.292 2.33 36 1.330 2.70 40 1.383 3.16 44 1.443 3.61 Calculation of Bé: °Bé = [145 (SG-1)/SG] The measurements of thickness were carried out by Mitutoyo outside micrometer (deviation was ±0.001) and surface roughness was measured by Taylor-Hobson Surtronic 3+.
The chemical etching temperature which is one of the important factors, affects the kinetics of metal removal action.
Online since: October 2014
Authors: Gheorghe Brabie, Bogdan Chirita, Robert Stefanut Teaca, Elena Costache
In the case of such process the small thickness of sheet and the small dimensions of parts are the most important factors that influence the process parameters and can affect the accuracy and quality of the produced mini - parts.
Introduction In the case of macro deep drawing processes, the accuracy of the drawn parts and the occurrence of different specific phenomena (like: springback, diameter variation etc.) during sheet metal forming are strongly influenced or caused by different factors like: forming parameters, tools accuracy and geometry, part complexity, friction between sheet and tool, local contact conditions, state of residual stresses generated in material [1][2].
The miniaturization of mechanical components requires an increased manufacturing accuracy and a high quality of manufactured parts.
The material used in investigation was an aluminium alloy whose mechanical properties are presented in table 3.
Table 3 Mechanical properties of metal sheets Young Modulus Yield stress Poisson ratio Anisotropy coefficient Hardening coefficient Total elongation Ultimate tensile stress [MPa] [MPa] - - - [%] [MPa] 58000 98.957 0.3 0.752 0.285 33.0 163.725 The simulation was performed by using the DynaForm software - version 5.7.1 and the applied criterion of plasticity was the “transversely anisotropic elastic plastic criterion”.
Online since: December 2010
Authors: Hong Fei Chang, Hong Chang, Jun Wu Xia, Feng Jie Zhang
The strengthening design of the sluice chamber is a renovation from open style to frame, to increase the integral property.
Mining subsidence often produces significant horizontal and vertical movements at the ground surface [5, 6], this will affect the good running of the sluice, and then, will seriously affect the local purposes of flood prevention, irrigation and transportation.
The model is adopted to study the global stability of the sluice in mining subsidence areas through strengthening the foundation, which not considered the interfacial properties between the pile and the soil.
Figs.13 is the safety factors against sliding in the three locations.
The change of safety factors against sliding is analogous to that of the angles of rotation (Figs.16).
Online since: June 2011
Authors: Zhi Shu Yao, Hua Cheng, Hai Qing Song
Test study on mechanical characteristic of high strength composite shaft lining of steel and concrete Zhishu Yao a, Haiqing Song b and Hua Cheng c College of Civil Eng. and Architecture, Anhui University of Science and Technology,Huainan 232001, China ayao.zs@163.com ,bhaiqingsong80@163.com , chcheng@aust.edu.cn Key words: steel, concrete, composite shaft lining, mechanical properties, model test Abstract.
For the economic and reasonable application of high strength composite shaft lining of steel and concrete, the mechanical characteristic of this kind of structure were studied.
Therefore, this article introduces that the test of the mechanical properties of the high-strength composite shaft lining of double steel and concrete are studied.
According to the Eq.3 and Eq.4, the gain factor of concrete strength is shown in Table 3.
(3) High strength composite shaft lining of double steel and concrete has very high ultimate bearing capacity, the main factors of affecting its bearing capacity have the diameter-thickness ratio of concrete, concrete strength and the thickness of inner and outer steel.
Online since: February 2003
Authors: Leszek B. Magalas, L. David, S. Etienne, S. Elkoun
A set of isothermal frequency scanning where performed in order to assess the properties of the main relaxation process.
Harrison, The Dynamic Properties of Supercooled Liquids, Academic Press, New York (1976)
Ferry, Viscoelastic Properties of Polymers, 2nd edition, Wiley, New York (1970)
Dean, Determination of Dynamic Properties of Polymers and Composites, Halsted, New York (1978)
Ngai, Analogous Anomalous Properties of Relaxation and Diffusion in Different Complex Systems: Simultaneous Resolutions by the Coupling Model, in Mechanical Spectroscopy, ed. by L.
Online since: July 2020
Authors: Azwar Manaf, Ari Adi Wisnu, D. Mahmudin, Yuyu Wahyu, Yana Taryana
Permagraph of Magnet Physik was used for magnetic properties measumerent.
The RL measurement results as a function of composition · Absorption Characteristics of Ba1-x LaxFe12O19 with x=0, 0.1, 0.2, 0.3, 0.5, 0.7 The magnetic properties of the Ba1-x LaxFe12O19 samples should affect the characteristics of electromagnetic wave absorption.
Whilst, the shift in absorption frequency is caused by the permeability and permittivity factors and the sample thickness.
Yaw(Rohde&Schwarz), “Measurement of Dielectric Material Properties,” Meas.
Mohsen, “Factors Affecting the Synthesis and Formation of Single-Phase Barium Hexaferrite by a Technique of Oxalate Precursor ”, American Journal of Applied Sciences 7 (2010), 914-921
Online since: May 2011
Authors: Heng Lin Lv, Geng Long Xu, Chun Hua Xu, Shi Jie Ding, Shou Zhi Feng
These factors make the structure components more easily to get corrosion and deterioration.
Comprehensive Analysis of Deterioration Mechanism The auxiliary shaft RC headframe was built in the early 1980s.For the constraint of the history, technology and economy factors of that time, there was an inadequate consideration of the concrete durability.
Affected by the dynamic load, the micro cracks in concrete expand and shrink continuously.
In the end, the reinforcement project obtained good results basing on meticulous construction, without affecting the normal production of the mine.
Experimental Study on The Mechanical Properties and Durability of Corroded RC Beams Strengthened with CFRP.
Online since: July 2011
Authors: Bao Hong Zhu, Rong Hua Zhang, Biao Wu, Yong An Zhang
The effect of temperature on microstructure and mechanical properties of the alloys was studied by optical microscope(OM), transmission electron microscope(TEM) with energy dispersive spectrometer(EDS), X-ray diffraction(XRD), differential scanning calorimeter(DSC) in this paper.
The tensile properties of the alloy were measured by using a MTS-810 test machine at a constant crosshead speed of 1~5mm/min.
The size and uniformity of a-Al and a-Al12(Fe,V)3Si the two phases’ organizations determine the mechanical properties of materials[10].The distribution’s change of a-Al12(Fe,V)3Si will also has a negative impact on the alloys’ mechanical properties, the performance of the alloy decline.
For most alloys, because of the small solubility, the impact of this factor is small relatively.
It shows that the material in the organization has better thermal stability, which can guarantee the stability of the materials’ properties
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