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Dielectric ceramics possess good thermal stability and mechanical property compared to polymer [3].
Therefore, the improvement of DBS is the key to enhancing the energy storage properties for SBT.
The energy storage properties of (1-x)SBT-xCT at 180 kV/cm are shown in Figure 4a-d.
The DBS is affected by many factors, such as grain size, porosity, defects, secondary phase, and so on [3].
(c-d) P-E loops and energy storage properties of (1-x)SBT-xCT with maximum applied electric fields.

The reason is that these materials display superior chemical inertness, optical, electrical, and magnetic properties, corrosion and oxidation resistance, such mechanical properties as high wear resistance and hardness and high strength and stiffness at elevated temperatures.
Machinable Glass Ceramic (MGC),as a type of glass ceramics and Aluminum Nitride Ceramic (AlN) representing the category of structural ceramics are of special interest due to their wide range of applications and properties.
The tool wear in the machining of advanced ceramics is mainly affected by tool materials and cooling conditions [11].
It was found [34] that a lot of pits occurred in the lower surface zone affecting the surface quality.
Yang, Q.Xuanhui, Structure and properties of AlN ceramics prepared with spark plasma sintering, Mater.

The author researched the mechanism of filtration on the basis of experiment and discovered that the porous structure is a key factor affecting the efficiency.
Porous structure type in fiber filter bed Factors influencing the efficiency of the filter The expansion ratio of the fibers The expansion ratio of the fibers impacted deeply on filtration efficiency by experiment result.
Contact sediment, mechanical removing, contact flocculation taken place distinctively in every pass hole.
Conclusions Fiber is a new kind of filtration materials whith can to improve filtration efficiency .The most important factor to dominate filtration efficiency is internal porous and porosity of fiber in-depth bed which will be controlled by structure and construction in filtration bed.
Water & Wastewater Engineering 2004(5):21-24 [8] Wanjun FU, ZL2007 1 00647 14.9 State Intellecture Property Office of The peoples Republic China Jun.29 2011.

Ayatollahi2,b, Mahnaz Zakeri 2,c and Chiara Colombo1,d 1Dipartimento di Meccanica, Politecnico di Milano, Via la Masa, 34-21056 Milano, Italy 2 Mechanical Eng.
However, some studies show that this term can exist in mode II problems as well; and significantly affect the elastic stress field around the crack tip.
Introduction Elastic stress field around the crack tip is usually written as a set of infinite series expansions [1] in which the first term is the singular stress, depending on the stress intensity factors KI and KII, and the second term is constant T-stress, independent on the distance from the crack tip.
Fringe value is an optical property of photoelastic materials, which is f =7 fringe mmN / for polycarbonate [6].
This contact can affect the results and increase the difference between experimental and numerical findings.

High wear resistance, less built-up edge formation, better surface finish and good adhesion are considered to be the most important properties for a good tool performance.
Therefore, it is necessary to have an experimental study for understanding and assessment of the above mentioned coating properties for different coating materials during high-speed machining processes.
The speed of spindle rotation, feed per tooth, and axial depth of cut are considered as the affecting factors.
El-Wardany et al. [10] dealt with an experimental and analytical investigation into the different factors which influence the temperature distribution on ceramic tool rake face during machining of difficult-to-cut materials.
Tool wear is a significant factor affecting the machined surface quality.

Introduction Aggressive media influencing polymer coatings cause their physical as well as chemical destruction (leaching, hydrolysis, oxidation), which leads to the loss of protective and decorative properties of coatings [1. 2. 3].
One of the aggressive factors that negatively influence polymer coatings are sodium chloride aqueous solutions that come from the sea and marine breeze and are commonly used as road de-icing agents in winter conditions [4, 5, 6].
The degree of the porosity of polymer coatings determines their barrier properties in relation to the substrate [8, 9, 10].
Furthermore, discolorations that appear on the surface and gloss loss (resulting from an increase in roughness) contribute to the deterioration of the decorative properties of the coating [2, 25].
The thermal properties of the coating were studied with reference to thermogravimetry (TG) while the effect of ageing on the mechanical properties of the coating was evaluated carrying out dynamic mechanical analysis (DMA) as well as assessing Buchholtz hardness.

The minimum XRD peak width ratio, b/B, is the calibrated RCF damage parameter that links materials to mechanical engineering (Weibull) failure analysis.
As evident from Fig. 3a, the bearing is affected by severe high-frequency electric current passage which can occur in operation depending on the alternator design.
The tribological properties are still sufficient but continuous chemical decomposition of the lubricant and surface remelting promote hydrogen penetration.
The amount of hydrogen absorbed by the steel depends on the release from the aging lubricant and the available catalytically active fresh metal surface [9]: both affecting factors are enhanced by HF electric current passage.
As the estimated b/B value of 0.71 does not even exceed the XRD L10 equivalent, premature formation of WEB, especially HAB, shows the acceleration of classical RCF under pure mechanical loading by the absorbed hydrogen.

Flašker University of Maribor, Faculty of Natural Sciences and Mathematics, 2000 Maribor, Slovenia University of Maribor, Faculty of Mechanical Engineering, 2000 Maribor, SLOVENIA boris.abersek@uni-mb.si, joze.flasker@uni-mb.si Keywords: Gears, mathematical models, experiemnt, numerical analyses Abstract.
In order to calculate the service life as precisely and reliably as possible we need good mathematical models for describing loading, geometry, properties of materials and fracture mechanics parameters.
The test with surface area replication was affected with examination of loading of stress levels 892 N/mm 2 and 696 N/mm 2 , which corresponded to a service life of 22.385 and 80.150 cycles.
By means of the least square method from equation: ( ) 21 z ∆K = z dN da (1) for each pair of data thus obtain with the some stress level we determined the corresponding value of coefficient of the material for short cracks: z1 = 120,571742 and z2 = 3,069 R=2.5 R=2.5 The value of the tooth stress intensity factor K is related to propagation of the plastic zone, deformation and orientation of grain in case of short cracks and stress intensity factors in case of long cracks.
When we want to approximate the tooth stress intensity factor for general use for crack initiation, propagation of micro and macro crack, the stress intensity factor for gear tooth becomes a more complex form [2, 5]: ( ) ( ) ln + 0.2= 2 th th K ) - Kπ a σ Y(a/S) π a σ Y(a/S) ae K π σ (2) where the shape factor [4] is: ( ) ( )a/S Y L S - a/S Y L c - Y(a/S) = tm ϕ ϕ ϕ sin 6 sin cos       (3) where Ym(a/S) is the bending part and Yt(a/S) is the known shape factor for the compact tension specimen. (4) Replicas on gears.

Oil and gas pipeline accidents are usually caused by a series of generalized management failure factors.
·Management-Software interface means the management of non-physical factors interface, such as legal regulations, management files and emergency plans.
The important point tents to be the direct cause of the accident or momentous factors affecting pipeline safety.
The factors affecting pipeline safety are summarized and classified comprehensively aiming at finding effective ways to improve the safety of pipeline in essence.
American Society of Mechanical Engineers, (2008), p.437 [2] Stacy, Joan H.

Analysis on Circumferential Clearance of Four-Ball-Pin Constant Velocity Joint Yang Hong-Xing1, a, Guo Chang-Ning1,b and Shi Bao-Shu3,c 1School of Mechanical Engineering,Shanghai Jiao Tong University, Shanghai 200240,China 2Zhejiang Zhong Da Transmission Co., Ltd, Jinhua 321025,China ayhxshine@sjtu.edu.cn, bchnguo@sjtu.edu.cn, cmyy968@sina.com Keywords: Four-Ball-Pin constant velocity joint, Tripod constant velocity joint, Circumferential clearance Abstract: By using Matlab, the circumferential clearance changing law with any swing angle and rotating angle of four-ball-pin CVJ was obtained, the results show that, under the same size specification and machining accuracy, four-ball-pin CVJ has a roughly similar vibration amplitude with traditional tripod CVJ, when the CVJ rotates one circle at any swing angle, there are four fluctuations of circumferential angle in four-ball-pin CVJ, but there six fluctuations in tripod CVJ, so the former one fluctuate less and has much more slight
Composed of two or one set of constant velocity universal joints, intermediate shaft, and other components, the mechanical part is usually used to transmit motion and torque.
Motion model Due to the factors such as design tolerances and machining errors etc, clearances exist among components of a CV.Joint after being assembled.if the circumferential clearance of the CVJ is too large, the internal components of the CV.Joint can generate shock, noise, thus this clearance can affect the reliability and lifetime of the CVJ severely.
The property of a CV Joint can therefore affects the stability and comfort of a car directly.The analysis on circumferential clearance of CVJ and influencing factors from the internal structure can be used to improve the product design and manufacture of craft, and to improve the comprehensive properties of future products as well.