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Introduction Ultrasonic motors (USM) principles of operations are based on the concept of driving the rotor by a mechanical vibration force generated on the stator (PZT Transducer) via piezoelectric effect.
Mishandling of material deformation can produce a jerking effect, which can affect degree of accuracy of the USM.
Using these relations the torque factor of the motor and the diameter of the rotor including driving wheel and the shaft can be determined.
The transferred force to the shaft can be determined using the following torque factor relationship: (3) This relation shows that the torque factor has to be carefully selected during the design process of the motor.
This considered the properties of the material used to manufacture the shaft and the moment of inertia of the rotor.

Introduction The stamping formability of cold rolled sheet (CRS) depends not only on its microstructure and mechanical properties, but it is also closely related to the surface conditions of CRS.
The mechanical properties and microstructure of test material are shown in Table 1 and figure 1, respectively.
The grain size is level 9.5, and the mechanical properties of them are similar.
Table. 1 Mechanical property of the three steel plates No.
Sheet forming properties of three kinds of texturing technologies.

Material mechanical properties The thermal parameters are the most important factor affecting the hot forming simulation.
The mechanical properties of 22MnB5 steel are extracted from NUMISHEET2008 benchmark03[10] and the material basic parameters are listed in Table 1 including density ρ, heat capacity Cp, thermal conductivity k, linear expansion α, Young’s modulus E and Poisson’s ratio v.
They are calculated using the properties of the air at the film temperature, Tfilm=(940+20)/2=480°C.
The properties of the air are shown in Table 3, including density ρ, heat capacity Cp, thermal conductivity k, viscosity μ and volumetric expansion β.
MAT 106 is selected in the blank, which may enter data tables of the material as a function of temperature including stress-strain, Young’s modulus, Poisson’s ratio, thermal conductivity, heat capacity and so on Material mechanical properties.

The property and quality of the paper machine affect the quality of the presswork directly.
The sliding factor is, there is also relative sliding between the string band and the drive roller with string band, the sliding factor of which is .
(in Chinese) [4]Qiu Xuanhuai, Mechanical design .
Beijing: Mechanical Industry Press, 2003.
Mechanical parts manual .

Introduction Polyolefins are being increasingly used in many applications due to their attractive properties, such as recyclability and lightweight, especially polypropylene and polyethylene due to their low cost.
Typical surface modification techniques for polymers include severe chemical oxidation [1] or mechanical processes [2].
The synergy of these two factors provoke lower values of polar water contact angles compared to the disperse diiodomethane.
An improvement on polar component is found in a higher extent when working with the torch than that of the vacuum chamber, thus a higher promotion of adhesion properties is expected.
Conclusions Plasma treatments are confirmed to be capable to increase polyolefinic adhesion properties without affecting bulk properties and with no generation of toxic waste (environmentally friendly processes).

CRH2 type EMU was taken for example to discusses the important principles of ecological design from aspects of environment factors, modern humane ecological design, design methods and material technology.
Ecological design means environmental factors should be contained in the design, which can be used to determine the direction of design decisions.
Ecological measures and ecological factors of the design could be determined better according to a number of different external factors.
(c) Perfect property of anticorrosion can omit the coating design for the body.
The key of optimizing design process, using material or energy reasonably, minimizing the negative effect on the environment as well as human health, is the systematic analysis of the external factors that affect the product life cycle.

Table 1 illustrates the results of orthogonal array experiments, where ki is the mean value of yarn tensile strength or fabric K/S value for the factor at ith level, and R is the difference between extreme values of k, i.e. max(k1~ k4) – min(k1~ k4).
The bigger the R value, the more important the factor is for tensile strength and K/S value of the modified fabric.
Consequently, to preserve fabric tensile strength while achieving reasonable high color depth, the optimum levels for three factors tested were time for 1 hour, temperature at 40°C, and H2SO4 concentration at 2% w/w.
As UV affects the para-aramid fiber performance, in particular, mechanical properties, the work of light fastness and UV protection of dyed Kevlar fabrics will be reported in our future publications.
Tesoro, Effect of surface-limited reactions on the properties of kevlar® fibers, Text.

The rheological property, curing process and performance of the body were analyzed.
The induction period of the main factors was affected by the initiator added in the gelcasting molded.
Microstructures and mechanical properties of spark plasma sintered Al-SiC composites containing high volume fraction of SiC, Materials Science and Engineering: A, 527(27-28) 92010) 7235-7240

No-excess block construction in oil drilling platform Sevan Driller Zhang Yongkang1, a, Yang Chaojun1, b, Guan Chunsong1, c, Ni Tao2, d and Zhuang Jianjun2, e 1School of Mechanical Engineering, Jiangsu University, Zhenjiang, China, 212013 2 Cosco (Nantong) Shipyard Co., Ltd, Nantong, China, 226006 aykzhang@ujs.edu.cn, byangchaojun@ujs.edu.cn, ccs.guan@163.com, dnitao@ cosco-shipyard.com, ezhuangjianjun@cosco-shipyard.com Keywords: No-excess construction, hull blocks, accuracy control, compensation, shipbuilding Abstract.
In the manufacturing stage, the factors affecting the block accuracy include plate-cutting, plate alignment, marking, assembling and welding.
The introduction of drilling platform Sevan Driller The drilling platform Sevan Driller, which is the first cylinder marine drilling platform in the world, the first 6th-generation semi-submersible marine drilling platform that is developed independently and owned the independent intellectual property rights by China.
Accuracy control of ship hull construction should be considered from the design stage to the manufacturing stage because the steel plate has many factors associated with distortion, which is implemeted in the whole process of the hull construction.

But as the coal bed methane is attached to the coal seam and different from the conventional hydrocarbon reservoir in the physical and mechanical properties and in the storage, it determines the particularity of the drilling techniques.
On occasions that position drift is affected seriously by the formation factors, we can use cascade two stabilizers on the bit to stable position and deviation to a great extent.
Solid particles like cuttings and barite make the fluid flow properties go bad resulting into not only breaking the fluid property stability, but also increasing the friction of the circulation system which make the equipments wear prematurely.