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According to the research on the structure and properties of different soft start devices applied to long distance and large capacity belt conveyor.
It's easy to burn out the motor, we should increase the safety factor of the motor when we choose the motor, then it adds energy consumption.
The use of frequency converter can make the performance of each motor close to each other, reducing the differences between the motor load power. (3)High power factor The input power factor of the converter is about 0.99, energy-saving effect is remarkable[3].(4)Easy installation, simple maintenance.
The liquid can be converted into mechanical energy, reducer is driven by the output shaft.
CST, developed by the American Rockwell Automation, Inc, is a mechanical governor system combined liquid viscous transmission with planetary gear train[6].It is a kind of mechanical and electrical integration of liquid drive system.CST is composed of input and output parts, clutch assembly.

And the reaction product, CSH gel, is the main factor in strength gain.
It is evident that the performance of Sanhetu is better than common concrete, exhibiting excellent durability through time and possessing superior chemical and physical properties.
Sanhetu, an inorganic composite, has evolved into organic-inorganic composite during development, with the increase of mechanical properties.
Factors affecting the pozzolanic activity include the mineralogical nature and chemical composition of the raw materials, water solid ratio (W/S), curing condition (time, temperature, pH, etc.).
The mixing technology seriously affected the compressive strength.

Introduction SiCp/Al composites have many outstanding properties, such as high specific stiffness/strength, high wear resistance, low density, high thermal conductivity and low thermal expansion.
Because of their superior properties, they are widely used in aerospace, automotive, electronics and medical industries.
Although the mechanical properties of the composites have been significantly improved, with the introduction of ceramic particles, they show high hardness and leads to severe abrasive wear on the conventional tools like high- speed steel and carbide tools, and the diamond tools are considered the most cost-effective and by far the best choice for the machining of SiCp/Al composites[1,2].
From the available literature on SiCp/Al composites, it is clear that the morphology, distribution and volume fraction of the reinforcement phase, as well as the matrix material properties are all factors that affect the overall cutting process.
During experiments, only one of the parameters, such as the table speed was varied while the cutting depth was held constant to observe the effects of individual parameter on machining properties.

As the good mechanical properties and simple construction technology of the fiber reinforced concrete, a lot of experimental research have been done.
The fiber can bear some of the tension force, and then tensile properties of the fiber reinforced concrete is improved.
Polypropylene fiber has a certain degree of thickening and weak interface effect because of lower elastic modulus, which is the adverse factors of concrete specimen strength.
Conclusions Through the experimental study on fiber reinforced concrete, some conclusions can be got as following: (1) Mechanical properties of concrete specimen have a certain increase by adding fiber materials.
(4) When sprayed concrete on site, the pellet phenomenon of polypropylene fiber and length of steel fiber may be important factors of the construction quality and schedule.

There are many polishing parameters that can affect the final quality of polishing.
Through experimental method, the importance of many polishing parameters can be studied; there are four factors which may affect the surface roughness, their contribution in descending order are path pattern, polishing contact pressure, tool diameter, and feed-rate [2].
Especially, the path pattern and the polishing contact pressure more affect the surface roughness than the others.
Furthermore the properties of self-similarity are desirable to the implementation of programming in industrial applications.
Because of the properties of "plane-filling" and "self-similarities" of fractal paths, it's meaningful to an automatic polishing path planning in industrial applications.

The study focused on the various factors affecting the spiral flow in order to improve the performance and efficiency of the spiral flow generating device [1-4].
The use of computational fluid dynamics (CFD) numerical simulation study gas flow state of the cylinder body, not only able to get flow macroscopic properties in conditions of the shape of the gas inlet, air intake way and other parameters, and also can get a lot of the microscopic information of the internal flow field[6].
Therefore, we know the relationship between the shape of the gas inlet and fluid properties, which provide important theoretical basis for the improvement of the spiral flow field and industrial equipment.
Fig. 2.1 Velocity on surface x = 0 of model-A Fig. 2.2 Velocity on surface x = 0 of model-B Tangential velocity is a main factor to control the air flow stably moving in the spiral flow field.
School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240 [7] Xueyi Zhou.

It was concluded that the ageing of polymer dielectrics affected by electric microseconds impulses did not relate to volume charge accumulation in the polymers.
In the process of insulation use, the long-term influence of the operating voltage, as well as the number of other factors (temperature, mechanical loadings, environment, radiation and others) can result in its ageing.
The interconnection and interdependence of the influence of the ageing factors hinder the insulation ageing investigation.
A number of works points out the participation of macrostructure defects (cavities, where the partial discharges are developed) [3, 4], as well as the environmental factors [5].
Bonnet, Investigation on electrical properties of thermally aged PMMA by combined use of FTIR and impedance spectroscopies, J. of Alloys and Compounds, 469 (2009) 197–202

The paper explains their operation, key factors affecting performance like blade number, aspect ratio, and overlap ratio.
Zemamou [10] reviewed Savonius VAWTs and their performance factors, showcasing efficiencies 27-38% higher than conventional rotors through innovative designs.
The review emphasizes self-starting ability, wind handling, efficiency, and cost as key factors.
Material Selection and its Properties The material needs to be structurally robust with a tensile strength and fatigue strength of at least 300 MPa and 150 MPa to withstand wind, vibrations, and temperature variations.
Advances in Mechanical Engineering, vol. 7, no. 5, May 2015

The increasing complex joint geometry and its three dimensional nature combine to increase the difficulty of obtaining an overall system of governing equations for predicting the fatigue properties of the adhesively bonded joints.
They concluded that the joint ultimate loads could be accurately predicted based on stress concentration factors from FEA and FRP through-thickness tensile strength values obtained from small-scale coupon tests.
A 3D FEA of the hybrid joint was carried out using the ABAQUS code with the model including the effects of large-deformations, bolt-hole contact and non-linear adhesive material properties.
The analyses revealed that adhesive layers introduce large increases in the in- and out-of-plane displacements, reduce bending and stress concentration factors (SCF), and increase the fatigue life of riveted lap joints.
However, accurate and reliable FEA is still a difficult task as the fatigue behaviour of these joints is not only influenced by the geometric characteristics of the joints but also by different factors and their combinations.

A typical processing route includes the PVD deposition of a barrier layer and copper seed layer, followed by copper electroplate (EP), anneal, and chemical-mechanical planarization (CMP).
All the processing steps affect the texture of annealed copper, and therefore affect directly the performance of interconnects.
Texture in copper interconnects has been recognized as an important factor affecting the electromigration resistance [1-4], stress-migration [5-7], and electrical resistance [8].
The selection of the materials for the barrier layer affects the texture of the copper seed as well.
Statistically vast experimental data allows one to construct phenomenological relationships between texture and other physical properties of metallic films that are technologically important.