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Due to its exceptional electrical, mechanical, and chemical properties, SiC is currently receiving attention as an alternative to Si for use in micro- and nanoelectromechanical systems (MEMS and NEMS).
SiC is now receiving added attention for its potential in micro- and nanoelectromechanical systems (MEMS and NEMS) due its exceptional electrical, mechanical and chemical properties as compared with Si, currently the leading material in these technology areas.
In a follow-on study, we found that several mechanical properties critical to MEMS, namely Young's modulus and residual stress, were strongly influenced by the microstructure of the poly-SiC films [5].
A resonator of this type exhibited a mechanical quality factor of 150,000 when tested under vacuum conditions and was operated successfully at a temperature of 1000°C [7].
The very high quality factor and the high operating temperature can be attributed to the outstanding mechanical properties of poly-SiC.

Artificial Neural Network Modeling of Injection Upsetting Load Prediction Önder Ayer1,a, Sedat Bingöl2,b, Tahir Altinbalik1,c 1Trakya University, Faculty of Engineering, Mechanical Engineering Department, 22180, Edirne, TURKEY 2Dicle University, Faculty of Engineering, Mechanical Engineering Department, Diyarbakır, TURKEY aonderayer@trakya.edu.tr, bsbingol@dicle.edu.tr, ctahira@trakya.edu.tr Keywords: Lateral extrusion, Injection upsetting, Artificial Neural Networks.
Mechanical and physical properties of the parts so manufactured are also high.
Albeit its advantageous as referred above the most important factor which limits the lateral extrusion is tool stresses.
One of the most important factor that affects the material flow is geometrical ratio of the primary deformation zone, another one is instantaneous die filling ratio.
That the areas in the die that have not been filled in are left at small amounts and that material flow to these small areas is very hard and difficult however is another factor which leads to increase of the load.

Because of this, it is very important to know the effects of drying on the materials and their physical properties, chemical and mechanical, because these properties strongly affect the phenomena of heat transfer and mass, especially in material very sensitive to heat.
To model the drying process of solids with arbitrary shape (Figure 1), the following considerations were adopted: (a) The solid is homogeneous and isotropic; (b) The distribution of moisture and temperature inside the solid are uniform; (c) The thermo-physical properties are constant during the process; (d) The drying phenomenon occurs by heat and mass diffusion inside the solid and by heat and mass convection and evaporation at the surface thereof.
d) Themophysical and Geometrical Parameters Table 2 summarizes the thermo-physical properties of the solid and fluid, and Table 3 contain information about the geometric parameters of the solid, which were used in the simulations.
The area/volume ratio of the material is a factor of great influence in the heating process, since the higher this ratio the faster the process will happen.
Lima, Heat and mass transfer in porous solids with complex shape via lumped analysis: Modeling and simulation, Master dissertation in Mechanical Engineering, Federal University of Campina Grande.

Graphite has a few benefits that good corrosion resistance, conductivity and contact resistance.[3] Nevertheless graphite has several disadvantage that low permeability, mechanical properties, expensive cost and huge volume. [4~9] This paper applies Metallic bipolar plate material for austenite stainless steel 304 was used.
The aim of this paper, raw material has different surface preparation conditions, when the investigation of corrosion behavior and electrochemical properties. 1.
Typically, potentiodynamic polarization experiments and electrochemical properties of the metal material evaluation methods have been used.
And the other peaks are not affected in the corrosion test was confirmed.
In other words, As-Received specimen grain boundaries, many of which have brought an increase in the corrosion rate and electrochemical properties are also highly Icorr value is considered to be the cause.

The experimental results showed that the screw thread in probe is the main factor in driving material flow along the thickness direction of the weld during FSW of copper and steel, the flow morphology of the weld is significantly different with vary forms of welding joints, and the material flow on different locations from the probe are quite different from each other.
Copper and steel are quite different from each other in chemical property, physical property, mechanical property and other aspects.
Compare to the cross-section morphology of the weld with left screw thread probe and right screw thread probe, we can defined that the direction of screw thread in probe affects the flow of the plastic metal of the weld.
In a word, we can determine that, the screw thread in probe is the main factor in driving material flow along the thickness direction of the weld.
The direction of the screw thread in probe will change the force status and mobility patterns, thus affecting the flow of the material of the weld.

The pulse electrochemical machining has gotten researchers attention in various countries because it has its own characters and advantages and can solve many problems in mechanical finishing.
The surface obtained by PECF has good surface mechanical property.
However, the products and temperature will increase rapidly if the current density is too large, which would affect the homogeneity of the flow field and surface quality.
The study of the experiment also indicates that, the transformation of the physicochemical property of the gap is different in different frequency range and different range of pulse width.
Generally, the higher the pulse frequency is, and the smaller the duty ratio is, and the stronger and larger the pulse and the transformation of the physicochemical property are.

Welding is often accompanied by a larger welding residual stress, which directly affects the safety and service life of the hull structure.
Meanwhile, it also assumes that material mechanical properties and stress-strain relationship are linear change in the tiny increments of time.
Dynamic response analysis Welding is often accompanied by a larger welding residual stress, and it will affect the hull security and service life [2].
Loss factor of metal material is relatively low(the loss factor of iron and steel is often between 0.0001 and0.0006) [9], and damping ratio of general steel is also low (0.01-0.03) [10].
Vol. 19(2004), p. 30 [9] Qingpeng Sun, Qijun Zhang and Huizhu Yao: Mechanical Industry Press. (1993) [10] Jingxiang Zhou: Harbin Institute of Technology Press. (2004).

The effect of the heat treatment on both the catalytic activity for the oxygen reduction reaction (ORR) and the properties of ZrOxNy has been examined.
However, their activities were not so high, and the factor which affected the catalytic activity was not clarified.
It has been well known that a heat treatment during ZrOxNy deposition affects the properties of ZrOxNy, such as structural, mechanical and optical properties [12-14].
This suggested that the properties of the film changed at around 500 oC.
Therefore, the crystal structure and the crystallinity would be the main factors to affect the electrocatalytic activity for ORR Acknowledgement The authors wish to thank the Japan Science and Technology Agency (JST) and the New Energy and Industrial and Technology Development Organization (NEDO) for their financial support.

Study of Metallurgy and Mechanical Properties of Japanese Swords Muneo Yaso1, a, Yoshihiro Minagi1, b, Toshifumi Takaiwa1, c Kunichika Kubota2, d, Tsuyoshi Kanaizumi2, e Takuya Ohba3, f, Shigekazu Morito3, g, Taisuke Hayashi3, h 1 Yasugi municipal Wakoh Museum, Shimane 692-0011, Japan 2 Metallurgical Research Laboratory in Yasugi Works, Hitachi Metals, Ltd., Shimane 692-8601, Japan 3 Department of Materials Science, Shimane University, Shimane 690-8504 Japan ayasoke_youkoso@ybb.ne.jp, b, c wakou@tx.miracle.ne.jp, dKunichika_Kubota@hitachi-metals.co.jp etsuyoshi_kanaizumi@hitachi-metals.co.jp, fohba@riko.shimane-u.ac.jp, gmosh@riko.shimane-u-ac.jp, hthayashi@riko.shimane-u.ac.jp Keywords: Japanese sword, Lath martensite, Residual stress, Bending test, Strength, Toughness Abstract.
In this report, firstly metallurgical properties were observed in surface and cross section using two kinds of Japanese swords.
The relationship between metallurgical characteristics and mechanical property on Japanese sword is discussed.
The thickness of hardened area and transition length to soft area, that is, gradient of hardness, may affect sword strength and bending test behavior.
The residual stress is an important factor for understanding mechanical property of Japanese sword and especially the residual stress in longitudinal direction on the surface of sharp edge is effective for breakage.

In composite laminates drilling, it has been shown that drill geometry and cutting parameters are the key factors that determine holes quality and delamination occurrence.
The damaged area and the delamination factor become then larger with the feed increase.
Fig. 9: Delamination factor Fd = Dmax /D Fig. 10: Influence of feed and tool geometry on the delamination factor Holes inside.
It aims to highlight the parameters that affect cutting forces and delamination.
Moreover, defects will be correlated with the mechanical properties of drilled specimens and crack propagation, and the different damage mechanisms encountered during mechanical tests will be discriminated.