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Online since: September 2016
Authors: Ying Hua Liu, Hao Feng Chen, Yan Wei Dai
Variations of difference field under different mismatch factors for n=7 are partly presented in Fig. 5
(2) It can be found that normalized stress functions for n=7 under different mismatch factors coincide reasonably with each other, and the normalized stress functions and are slightly influenced by the radial distance and mismatch factor.
The normalized stress function is proposed by Dai et al. [12] as follows: (3) Fig. 5 Variations of difference field under different mismatch factors for n=7 (a) ; (b) Fig. 6 Variations of normalized stress function under different mismatch factors for n=7 (a); (b); M* and its explanation Fig. 7 presents the variations of with the mismatch factor.
Fig. 7 Variations of M*-parameter with different mismatch factors As usual, the Q-term is strongly dependent on the applied loading level.
The load independence property for the M*-parameter is verified.
Online since: February 2011
Authors: Xing Wen Luo, Hai Lin Yao
This is an important factor that affect the mechanical properties and durability of recycled concrete directly [7,8,9,10].Recycled concrete has been tried to use in highway and construction engineering currently, but the influence of loading method on dynamic behavior of recycled concrete have not been researched before[11,12].
In order to study the influence of the cyclic loading frequency on the mechanical properties of recycled concrete, the loading frequency of two groups of specimens were 0.5HZ.
In order to research the amplitude of cyclic loading on the mechanical properties of recycled concrete, the maximum and minimum stress ratio of two groups of specimens were respectively 0.95 and 0.25 in the tests.
We could research the influence of loading waveform on the mechanical properties of recycled concrete by different loading waveform.
[2] Cao Wei: Experimental and theoretical reseach on fatigue properties of plain concrete under trial cyclic loading with constant lateral pressure.
Online since: October 2014
Authors: Qistina Mohd Jamal, M.T.H. Sultan, M.Y. Haris, D.L. Majid, Noorfaizal Yidris
Advantages of natural fibers over traditional synthetic reinforcing fibers such as glass and carbon are in terms of low cost, low density, acceptable specific properties, ease of separation, enhanced energy recovery and biodegradability [1-5].
Mechanical Properties.
Mechanical properties of kenaf and fiberglass epoxy laminates were determined through tensile test.
The location of maximum displacement affects the shape of contour, which can be examined from top view.
Increase of load scale factor confers influence to the increment of displacement and stress on the radome.
Online since: December 2014
Authors: Xue Wen Dong, Qiu Yang Liu
He uses a solid model to reveal the dynamic property and damage forms of a CFST through arch bridge under the impact of an earthquake.
Besides, they also study how the elastic restraint of the bridge deck system affects the dynamic performance of the main arch.
They conclude that the most significant influencing factor is rise-span ratio.
This process turns a complex real model into a simplified spatial mechanical model which can be used in mechanical analysis [5].
Therefore, in the simplifying process, it is the major factors that should be focused on rather than those less important ones.
Online since: August 2014
Authors: Zheng Qiang Li, Peng Nie, Zhang Shun Ding, Shu Guo Zhao
Introduction Tool wear cutting state has direct affect on the quality and precision of processing mechanical parts, especially in the surface processing of the parts with high requirements[1].
AE are less affected by cutting condition and tool parameters’ variance, tolerate in environment disturbance and have high sensitivity.
In neural network, the initialization of the weights strongly affects the final solution.
When the factors of matrix change a little, their singular values change little.
These good features guarantee the robustness of the signal features represented by singular values, which meet the requirements of the properties in model identifying as feature vectors.
Online since: December 2014
Authors: Kuo Yi Li, Yin Chi Lin, Hui Ling Hsiao, Shu Chen Yang
The physical contradiction means a same parameter with two opposite properties, such as light and heavy.
Accordingly, the operator has to revise the size of the force for percussion immediately. 2.2 Measure 2: Problem of the value of the tapping frequency affecting the percussion effect and solutions thereof When a user subjects the patients to percussion via the intelligent percussion device, the stability of every tapping frequency must be noted, as the loosening of sputum from the deep part of a patient’s lungs can be affected by a tapping speed which is too fast or too slow.
This principle is not adapted to this measure; and (4) NO.28 (mechanical interaction substitution): Conduct the interaction between the object and an electric field, a magnetic field, as well as an electromagnetic field.
After turning on the intelligent percussion device, the nursing staff selects the data at the left bottom side of the display device, such as gender, age, weight, factor, division, language and wave.
Cucchiara: A Comparison of Manual to Mechanical Chest Percussion for Clearance of Alveolar Material in Patients With Pulmonary Alveolar Proteinosis (Phospholipidosis).
Online since: July 2013
Authors: Yi Min Lu, Dong Dong Wang, Xian Feng Huang
Therefore, the proposed method is not affected by the complexity of the system and is not sensitive to noises.
The traditional method uses Takens Theorem [3] to reconstruct phase space, from which chaotic properties of the system can be acquired for computing the Largest Lyapunov exponent from small data sets [4].
In this paper, we use an adaptive controller to suppress periodic oscillations and chaotic oscillations, and alter the control strength by adjusting the control strength factor.
This improved Dc(n) exhibited better convergence properties.
Tr=Lr/Rr, ωe=ωr*-ωr means the rotor flux time constant and the difference between the reference and the real mechanical rotor speed.
Online since: September 2011
Authors: Peter Groche, M. Kraft, S. Schmitt, S. Calmano, U. Lorenz, T. Ederer
In addition to that, other influence factors on the company and the manufacturing processes, such as scarcity of resources or labor availability, are commonly neglected or assumed as constants.
Adaptive and closed-loop control of forming processes As stated before, many manufacturing processes are widely sensitive to fluctuation in material properties.
This approach does not require a deep knowledge of the correlation between input properties, process values, and output properties.
Disadvantageously, an adaptation to fluctuation in input properties can only be made if they have already had an influence on the output quality.
If the comprehension of the process values is existent, at least by trend, the process can be adapted to the actual input properties before it is conducted.
Online since: October 2014
Authors: Alexander S. Rogachev, Sergey G. Vadchenko, Alexander S. Mukasyan
Thus, multilayer foil with the flat continuous nano-layers and advanced mechanical properties was obtained in the Cu-Nb system: bilayer thickness was about 10 -20 nm [14].
These effects are probably caused by difference in mechanical properties of Ni and Al (yield strength, hardness, etc.) and sliding of the layers relative to each other.
Some of the multilayer foils possess interesting mechanical or physical properties, e.g., high tensile strength or superconductivity.
Correlating mechanical properties to microstructure in rolled nickel aluminum reactive laminates.
Evaluation of mechanical properties and structure of multilayered Al/Ni composites produced by accumulative roll bonding (ARB) process.
Online since: January 2013
Authors: Jun Zou, Yi Hua Sun, Cai Hua Huang, Xiao Hua Sun
Thermal Effects Caused by Inclusions in Optical Films Irradiated by CW Laser Caihua Huang, Xiaohua Sun, Yihua Sun and Jun Zou School of mechanical and material engineering, China Three Gorges University, Yichang 443002, China email: caihuah2009@126.com, Keywords: Laser induced damage, thermal effect, damage morphology, optical film Abstract.
The laser-induced thermal damage can be effected by many factors, such as material property, the size and distribution of inclusions, the pulse duration [4,5,6].
Every physical model can not consider all the factors and depict the interaction of these factors accurately.
Although all the factors mentioned above can affect the thermal damage of film, the dominated factor can be determined by the damage morphology.
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