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Introduction Eggshell powder, having cementitious properties due to the presence of calcium oxide, have been investigated by researchers as a possible material of construction [1,2,3].
Their observations have shown that PET-ash composite tiles can be a viable option in terms of the desired properties.
The tiles were then left to dry for 72 hours before mechanical strength testing.
Yield % vs. the proposed Interstitial Dynamic Spacing – IDS As can be deduced, the mode of breakage (impact, chipping or attrition) is influenced by a number of factors.
After the curing period, the tiles were tested for its mechanical strength shown in Fig. 4.

While restrictors working, the mechanical properties of the film, including the pressure distribution, load capacity and stiffness index are the key factors who determine the stability of the aerostatic restrictors.
The Mechanical Structure Design Restrictor is a device to result in cutting effect before the external pressurized gas entering the bearing clearance, and form stable lubricate air film with certain stiffness and bearing capacity.
To facilitate the calculation, some related mechanical parameters are marked in the body’s top view respectively as shown in Figure 4.
Gas enter the gap between restrictor and the rail working face through orifice  when experiment, changes in air pressure also affect the actual value of the dielectric constant, causing the deviation between theoretical and measured values .
Considering the difficulty of adjusting the controling error factors and the existing experimental conditions and methods, the error can be considered within the allowable range.

Effect of Aging and Microstructure on Mechanical Rolling CuAlNi Shape Memory Alloy G.S.
Introduction Shape memory effect is called as the property to recover the original shape from deformed one by heat treatment above critical temperature.
Therefore, in order to apply to mechanical and thermal materials, it is important to obtain the experimental data for a transformation under the loading, and physical properties, and slip resistant for repeated thermal cycling.
Another factor is the decrease of Al concentration by the change of β1 F+ γ1 F Phase, and the increase of orderness during a long time aging.
Also, they affected in the formation of G.P zone and transformation temperature in company with γ2 phase formed by θ F to θ at grain boundary.

The main benefits arising from the use of PMLSM include high thrust density, low thermal losses and, most importantly, the high precision and accuracy achievable from the simplicity in mechanical structure [1].
However, due to the lack of a transmission unit, the tracking behavior of a linear motor feed drive is prone to be affected by external disturbances and model parameter variations [2].
In the past decade, the variable structure control strategy using the sliding mode has been the focus of many studies and research for the control of the ac servo drive system because the sliding model control can offer many good properties, such as insensitivity to parameter variations, external disturbance rejection, and fast dynamic response [3].
After some mathematical manipulations, the control law is found to be (18) where q is determined by all disturbance, and . m and k are the total mass and the whole amplification factor from the control signal to the generated force, respectively.
Disturbance Observer The merit of the disturbance observer (DOB) is that it can estimate a disturbance and reject it without affecting performance.

This is because a variety of factors influence the cutting process, e.g. material properties, relative die clearance and cutting edge geometry.
The achievable ratio depends on factors such as the diameter, the material properties, the present state of stress and the quality of the pre-cut hole.
Table 1 and Table 2 contain details of the mechanical properties and chemical composition of the test material.
However, test pieces were also manufactured and tested for hole expansion testing in order to achieve wider acceptance of trimming results. 3.5 Determination of the surface properties For the examination of the surface properties the cross sections are measured by means of a digital microscope.
The fundamental procedure for the determination of the generated surface properties is represented in figure 5.

Introduction Physical mechanical and thermal stability of a material is the primary factor responsible for quality of polymer vehicle components.
In order to evaluate the influence of the cross-linking degree (synthesis reaction) on the properties of a material, it has been investigated how heat treatment of a vehicle component part made of rigid PUF affects thermal physical and mechanical characteristics of the material.
Bazhenov, Mechanical properties and processing of composite materials, Dolgoprudny, Intellekt Publ., 2014
Shafigullina, Investigation of physical-mechanical and performance properties of glass fiber reinforced polyurethane materials used in the machine building industry, Proc.
Shafigullina, Analysis of physical and mechanical properties of polyurethane facade thermal panels used in civil construction.

Analytical solutions of stress intensity factors and crack opening displacements are obtained.
Thus, the trans-scale stress intensity factor is obtained as (1) (2) Kmacro micro is the trans-scale stress intensity factor. nmacro is the macroscopic Poisson’s ratio. mmacro and mmicro stand for the macroscopic and microscopic shear modulus, respectively.
The second involves the macroscopic and microscopic material property.
Influence of microscopic effects on the fatigue crack propagation behavior The microscopic effects include the size a0 of the initial micro-flaw and the evolution modes of three basic normalized parameters s*, d* and μ* that greatly affect the fatigue behavior of a material.
D dissertation, Department of Mechanical Engineering and Mechanics, Lehigh University, USA, 1962

The shearing force is the basis to calculate mechanical parameters of the disc cutter and slitting machine, therefore, it is very important to obtain the accurate shearing force.
All of them reference the analysis method of the cutting machine with beveled shear blade and choose some coefficient to modify the results [2], this affects the calculation accuracy of shearing force.
Fig. 1 Principle of the disc slitting process Fig. 2 Acting forces of the disc cutter Fig. 3 3D modeling of the disc slitting Table 1 The FEM parameters Parameters value[mm] Thinkness of sheet 1.6 Thinkness of cutter 8 Radius of cutter 135 Blade radius of cutter 0.03 Clearance 0.06 Overlap 0.32 Table 2 Mechanical properties of galvanized sheet Yield limit σs[MPa] Ultimate strength σb [MPa] Elasticity modulus E0[GPa] Elongation δ5[%] Hardening exponent n 280 488 206 47.37 0.196 Finite element simulation of the disc slitting process Finite element modeling.
The mechanical parameters of galvanized sheet (see Table 2) were obtained by the tensile test.
Zeng, Criteria of metal ductile fracture and numerical simulation for metal forming, Chinese Journal of Mechanical Engineering, 38(2002)21-25

Thus, the packing density of the adsorbent affects directly the excess adsorption on a volumetric basis.
The mold was installed in a mechanical press.
All of them have mechanical stability and can be well managed.
It has been well proved [15,26] that, depending on the adsorption temperature and on the pressure used, the hydrogen uptake depends on the sample properties (i.e., the micropore volume (also the apparent BET surface area) or the narrow-micropore volume).
Furthermore, if the density of the sample used is different from the packing density or the monolith density, the results will be affected.

Study on the Accurate Measurement of Film Thickness Zhiqiang Xua and Kaiguo Qianb Department of Physics, Kunming University, Kunming, China 650214 a x13808736648@yahoo.cn, bqiankaiguo@qq.com Keywords: ultra-thin films; material; accurate measurement; technology; methods Abstract.The thin-film technology is the hotspot of today’s material science research.The thickness is an important physical parameter of the film thickness, so measurement naturally becomes the important work of research into material properties.
In the sub-micron level, the thickness of film has great relevance to mechanical, electrical, magnetic, optical and other properties.
The film material having special properties is different from the material, and thus has a wide application in the IC process.
If a group of single-layer thin film thickness is uneven, it will not only affect the thin film throughout the tensile srtenth, barrier properties, etc. but also subsequent processing of the film.
However, the use os x-ray diffraction methods to determine the monolayer thickness, there are some nagative factors:Firstly, this method has a selectivity of materials, this method cannot be used in some material; Secondly , since the monolayer film has only two interfaces, so its signal intensity of the x-ray diffraction is weaker than that of the multilayer film , and it’s not conductive to data processing; besides, there is no similar repetition period of the multilayer film structure, the diffraction peak is wider,.