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Efficiency in air transmission In transmission through pipe, pressure loss and air leak are the two factors resulting in air power loss.Pressure loss occurs along pipe and at joints.
Fig.3 The network optimization control algorithm for the air compressor fleet system The problem of air compressor fleet in big flow fluctuation situation how to control the stability of the pipeline gas supply at the end is very urgent for the industrial site, which does not affect the normal work of the other end of the branch pipe equipment.
Chinese Journal of Mechanical Engineering, 2014,27(3):584-594
Mechanical properties evaluation based on the least squares for actuators system.
Mechanical Properties Evaluation for Pneumatic Actuator and Electric Actuator Based on AHP-FCE.

As the welding of stainless steel and copper belongs to dissimilar metal welding and their physical properties are very different, thus the welding of them is difficult and it is likely to cause a variety of defects in the welding process.
Through preliminary simulation and access to relevant Fig. 1 FE model of connecting pipe Fig. 2 Meshing of welding seam and heat affecting zones information, the heat affected zones of two tubes are all 3mm wide.
But for the welding of dissimilar metal, even though the weldments are symmetrical about the welding seam, the temperature distribution is asymmetrical as a result of the difference of physical properties of each weldment.
Analytical stress intensity factor solutions for resistance and friction stir spot welds in lap-shear specimens of different materials and thickness.
Effects of temperature-dependent material properties on welding simulation.

Recrystallization state seems not only affect the fatigue life, but also the crack initiation pattern and crack initiation life.
Introduction Nickel base directionally-solidified superalloys are widely used in aircraft turbine blade because of their outstanding properties in high temperature and severe operation condition.
However another forgotten factor that does affect recrystallization is free surface, especially in case that the plastic deformation is under certain threshold.
That perfectly explained that free surface is a detrimental factor besides plastic deformation and high temperature treatment.
Directionally Solidified Non-hafnium Superalloy and Its Overload Mechanical Damage, Materials for Mechanical Engineering, Vol.25(2001):4-7 [2] Y.R.Zheng, Z.C.Ruan, S.C.Wang.

Introduction Multiwall carbon nanotubes (MWNT), a promising reinforced component, are widely used in almost every polymer matrix owing to its excellent properties such as high mechanical strength, thermal conductivity and electrical conductivity [1-4].
Owing to the remarkable intrinsic properties MWNT exhibited, it was believed that the incorporation of MWNT in polymer matrix should lead to composites with unique properties.
Investigation was focused on electronic properties and SEM micrograph of MWNT reinforced polyacrylonitrile fibers.
However the thermal and flame retardant properties of MWNT reinforced polyacrylonitrile have not reported by reference.
While in many applications especially for electrical and electronic devices, both flammability and electrical properties are essential.

The work material was zirconia block used for dental restoration which properties as shown in table 1.
The response variable is an unknown function of the former design variables, which are also known as design factors.
In this experiment, the cutting speed, feed rate, width of cut and depth of cut were chosen as design factors as mentioned earlier.
Three levels were specified for each of the factors as indicated in Table2.
“Microstructural characterization and comparative evaluation of physical, mechanical and biological properties of three ceramics for metal–ceramic restorations”, Journal of Dental materials, 2008

Deformation has occurred to partial sections of the machine roadways, which affects their safe production badly.
Action mechanism of blasting on slope The action of blasting on the slope is performed in two aspects: firstly, the formed vibration inertial force adds slippery factors to the slope.
Secondly, the constant action of blasting vibration leads to the increase of the shearing strength of the surrounding rocks, the expansion and extension of the original structure face, tectonic structure face and original cracks and fractures, or even the formation of new blasting cracks and micro-cracks, and the decrease of the slope’s original physical and mechanical properties, thus affecting the overall stability of the slope[1,2].
The destruction of slope ground mass caused by blasting is not only decided by mechanical properties of rock mass, but also is related to loading nature and loading speed obviously.

Polypyrrole (PPy) and manganese (Mn) due their remarkable properties offers a good performance for electrochemical capacitors.
The capacitance will of course vary depending on the normalizing factor; i.e., mass or area.
The cause of the decreasing specific capacitance in the earlier cycling is probably due to the swelling of the thin film, or perhaps mechanical breakdown [10].
Another example of mechanical breakdown is the separation region between particles which can lead to the loss of active material.
Cyclic voltammograms of the thin films are affected by faradaic and non-faradaic processes.

Wu, Formation and properties Fe-based amorphous/nanocrystalline coating prepared by wire arc spraying process, J.
Coddet, Correlations between operating conditions, microstructure and mechanical properties of twin wire arc sprayed steel coatings, Mater.
Hashimoto, Chemical properties [amorphous alloys], edited by F.
Fatás, Mechanical and structural properties of electrodeposited copper and their relation with the electrodeposition parameters, Surf.
Liu, Microstructures, mechanical properties and corrosion resistance of Hastelloy C22 coating produced by laser cladding, J.

Tire-pavement noise generation is affected by a number of factors, such as type and size of tire, tire tread pattern, vehicle speed, wheel load, and pavement surface characteristics [2,3].
Although past experimental efforts allow the development of empirical relationships between tire-pavement noise and the factors affecting noise, they do not provide detailed engineering information (such as spatial, temporal and frequency distributions of sound pressure as well as sound pressure variations in the nearby field) which is essential for an in-depth understanding tire-pavement noise generation mechanisms.
Table 1 describes the identified tire stiffness parameters which produces eigen-frequencies along circumference from simulation in close agreement with the measured eigen-frequencies of tires with similar properties, as shown in Fig. 3.
The properties of air at 20 oC are used in the paper.
Key material properties include: dynamic viscosity = 1.51 x 10-5 kg/m.s, bulk modulus = 142 kPa and density = 1.205 kg/m3 [14].

In the early stage, they have been used for the investigation of material properties, and nowadays, they have expanded their application to many fields of the science and engineering, which are nano lithography [2], nano storage system [3], and so on.
The AFM can use not only conducting materials but also non-conducting materials, since the force between the nano tip and the test material is used for measuring the material properties.
The ZnO properties and the feature of the HAR nano tip are investigated.
And the interaction caused by the cantilever may affect the ferroelectric material and distort the domain information as seen in Figure 1 (a).
In the case of the ZnO piezoelectric layer, the c-axis orientation is one of the most important factors of piezoelectric property.