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On some Conceptual Considerations for the Finite Element Simulation of the Oxygen Out-Diffusion in Ag-MgO Composites Andreas ¨Ochsner1,2 1Department of Applied Mechanics, Faculty of Mechanical Engineering, Technical University of Malaysia, 81310 Skudai, Malaysia 2Centre for Mass and Thermal Transport in Engineering Materials, School of Engineering, The University of Newcastle, Callaghan, NSW 2308, Australia Andreas.Oechsner@gmail.com, Keywords: Segregation, Diffusion, Finite Element Method, Interfaces, Composites Abstract.
The presence of atomic oxygen at internal metal-ceramic oxide interfaces significantly affects the physical properties of the interfaces which in turn affects the bulk properties of the material.
The presence of solute atoms at internal metal-oxide interfaces influences the physical properties of the interfaces and this, in turn, may affect the bulk properties [6].
The segregation of the oxygen atoms at the metal/oxide interfaces is modelled as a boundary flux q = −w12 · ψ1O + w21 · ψ2O , (2) where w12 and w21 are local transition rates which relate to the equilibrium segregation factor s = w12/w21.
Structure-Property Relationship of Metal-Ceramic Interfaces (Gordon & Breach, USA 1996)

• It has mechanical properties that are not the same in different directions
Disadvantages: • Microemulsion affects stability and external factors such as temperature and pH value
We can alter most of the properties of nanocomposite materials like mechanical, fire resistance, stability, surface, chemical, optical properties, etc.
Due to its good properties (such as mechanical properties, electrical and thermal properties), many application areas have emerged.
Various nanoparticles are used to prepare nanocomposites and their size affect the final properties [35-43].

Plateau pressure, temperature, humidity, radiation and other major climatic factors, not make all properties of the device are adversely affected, just make some performance affected, and to different equipment, influence and degree is not the same.
Mechanical properties: at altitude 5000 meters maximum solar radiation is 1.25 times area at plain.
For the outdoor equipment, the increase in solar radiation will cause high temperature affixally rise, reduce mechanical properties of the organic insulating material, thus brings the deformation of the material and mechanical thermal stress.
Electrical properties of polymer materials: the deformation and brittleness caused by plateau environment will make the performance of the cable and plastic components of electrical decrease.
Whether each support personnel can withstand high altitude reaction test, is an important factor affecting personnel in rate, equipment support ability.

From the microscopic point of view orientation and crystallization processes have the biggest influence on the mechanical and thermal properties of PET bottles.
More specifically, the properties of PET bottles depends on as many as 14 variables, however, in this paper they are not individually discussed.
The orientation of polymer chains and crystallization processes have the biggest influence on mechanical and thermal properties of CSD PET containers.
The ISBM number of parameters affecting the thickness profile and the quality of the bottles is very high.
There is a number of measurable characteristics of the bottle, such as thickness, mechanical properties, degree of crystallization, intrinsic viscosity, but they are not able to identify aesthetic "betterness" of the bottle.

The microstructure and mechanical properties of CO2 laser welded as-cast AZ31 magnesium alloy sheet were investigated.
The microstructure and mechanical properties of weld joint were studied at present work.
The hardness of base material (BS), heat affected zone (HAZ) and fusion zone (FZ) of AZ31 magnesium alloy was measured by a HVS-1000 type hardness tester.
Shan [10] found that the heat input was the most important factor to influence the weld shape.
Analysis of Tensile Properties.

Effects of Vibratory Disc Milling Time on the Physiochemical and Morphological Properties of Coal Fly Ash Nanoparticles Omolayo M.
It was established in the study that the duration of the milling affects volume, surface area, particle size, pore size distributions, as well as microstructure. 1.
It was established in the study that the durations of MDM affected volume, surface area, particle size, pore size distributions, and microstructure.
Rukuni, “Development , engineering properties and potential applications of un fi red earth bricks reinforced by coal fl y ash , lime and wood aggregates,” J.
Andrade, “Investigation of mechanical properties and carbonation of concretes with construction and demolition waste and fly ash,” Constr.

The manufacturing process is a significant influencing factor on the mechanical properties of fiber-reinforced cement-based composites.
Introduction Fiber-reinforced cement-based composites are currently considered to be an important class of construction materials for various applications due to their superior mechanical properties and their flexibility in design capabilities as construction materials [1].
In a composite, the micromechanical parameters that affect the fiber-bridging behavior include the component properties such as the fiber length, diameter, elastic modulus, strength, volume fraction, matrix strength, and elastic modulus, as well as the interfacial properties such as the frictional bond strength, chemical bond strength, and slip hardening effect [3].
In addition to the micromechanical parameters, the manufacturing process also affects the composite properties.
The application of extrusion molding to fiber-reinforced cement-based materials enhances their mechanical properties such as strength and elastic modulus.

Mechanical Properties.
Mechanical properties of ENR-30/clay nanocomposites containing different types of montmorillonite clay.
A similar observation also has been reported for the effect of nanoclay on the mechanical properties of ENR-50 [5].
Compatibility between the ENR matrix and OC-MMT is one of the main factors in determining the mechanical properties of the nanocomposite.
This is probably the reason why the best mechanical properties were observed for the ENR-30/OC-MMT nanocomposite.

The Evaluation of the Effects of the Maximum Stress Intensity Factor for Fatigue Crack Opening Behavior by Finite Element Analysis Hyeon Chang Choi 1, a Hyeonki Choi2, b and Jun Hyub Park 1, c 1 Department of Mechatronics Engineering, Tongmyong University, Busan, Korea 2 School of Mechanical Engineering, Sungkyunkwan University, Suwon, Korea a hcchoi@tu.ac.kr, bhkchoi@skku.edu, cjhyubpark@korea.com Keywords: Finite Element Analysis; Crack Opening; Cyclic Crack Tip Opening Displacement; Reversed Plastic Zone Size; Maximum Stress Intensity Factor.
It is confirmed that the crack opening behavior depends upon the maximum stress intensity factor Kmax.
The results of the smaller element sizes indicate that the crack opening behavior has not an affect on the element size except that the element size is larger than the reversed plastic zone size [8, 9].
Material properties are shown in their papers.
We can confirm that the crack opening behavior depends upon the maximum stress intensity factor Kmax.

Material mechanics and dynamic properties affect the service life of parts, and also the normal operation of machines.
The surface faults of mechanical parts are considered to be the most important factor to affect the service life and to some extent the normal operation of a machine.
It has many advantages in improving properties of materials and increasing their service life.
It helped to prevent the formation of surface micro-cracks, increase the service life of parts, and improved the mechanical properties of the metal surface.
Basic properties of materials were that yield strength was 355MPa and the tensile strength was 600MPa.