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It is the matrix-inclusion interfacial damage and the matrix crack propagation damage that resulted in the poor properties above.
It is concluded that number of inclusions has much affect on the tension strength, and the fewer the inclusions is, the more strength the model has.
Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing, 1993, A172(1-2): 63~69 [4] Llorca J.
,Gonzalaez C.Microstructural factors controlling the strength and ductility of fiber-reinforced metal-matrix composites.
The influence of fiber distribution on the mechanical response of a particulate metal matrix composites.

Electropulsing treatment was applied to high carbon pearlitic steel to assess the effects of the treatment on microstructure and properties.
At 40μs, no visible electropulsing effect was observed and no change in electrical or hardness properties was noted independent of the frequency applied.
No change in electrical properties was observed but microhardness was found to decrease after electropulsing compared to cold-rolled, unelectropulsed samples.
However, the literature suggests that other factors such as athermal effects (electron wind) may also affect the microstructure [8-10].
Liu, Effect of Electropulsing on Recrystallization and Mechanical Properties of Silicon Steel Strips, J.

It was found that that the measured improvement of mechanical properties is significant also in the statistical point of view.
Mechanical properties of the stressed samples were determined using a T 2000 Tensile tester (Alpha Technologies) with the displacement rate in 2 stages.
Conclusion As has already been mentioned, in practice, in the preparation of nanocomposite polymer systems, multiple influences and process conditions interact and affect more properties of the resulting nanocomposites.
Therefore, statistical methods have been used for a more comprehensive assessment of the properties and their relationship.
This result is also important for the practical preparation of nanocomposites based on polymers and clays as it has been confirmed that in these systems the improvement obtained in this case mechanical properties can be considered significant even in a more comprehensive view of the whole system and its properties.

Introduction A difficult problem in the penetration into a concrete target is a proper understanding of friction properties between the projectile surface and the target.
But there is still a heat-affected zone from the observation on the remaining projectile after the experiment.
The heat conversion factor in Fig.4 and Fig.5 is different.
This coefficient is related to many factors, such as hardness, strength of projectile, target and so on.
Advances in Mechanical Engineering, (2012), pp.1-9

Comparing Mechanism of Mechanical and Electrochemical Finishing Mechanical Finishing.
Properties changed after reaction, the surface can be ground subsequently more efficiently and effectively by fixed abrasive, for example, whetstone etc.
It is universally agreed that in general applications the most important factor of surface topography is the roughness height.
The concave surface and heat-affected layer can be gained at one time; fig.5(c) and fig. 5(d) is the surface topography of PECF and ECMF namely ECF surface.
The strong or weak adhesiveness directly affect on the workpiece operating condition, as much performance and lifetime.

Strain has valuable effects on the formation of the growth and the photo electronic properties of Ge/Si quantum dots (QDs), and it is important to understand the distribution of strain and the other properties of Ge/Si QDs theoretically.
The Ge QDs density, size fluctuation [4] and ordered array, which are also the determining factors of electronic energy band structure and the optoelectronic properties of multiple layer Ge/Si QDs device, are hard to manipulate.
However, most of recently work pays more attention to the strain properties of the III-V compound semiconductor QDs, and of those isolated QDs.
Therefore distribution trend of εh and εb is crucial for the research of photoelectric properties of QD devices.
But separate discussion of effect of the lateral spacing and vertical spacing of QDs on the distribution of strain field is helpful to grasp various influencing factors.

Pooladi B.b Dept. of Mechanical Engineering, Ferdowsi University of Mashhad, Mashhad, Iran a Farhang@um.ac.ir, behsanpb@yahoo.com Keywords: Fatigue, Damage tolerances, Crack propagation, Stochastic modeling Abstract.
Fatigue damage plays a significant role in fatigue life of structures and mechanical parts.
In other words in this study all of the random properties of fatigue are shown as a function, X (t), which is multiplied by an experimental deterministic equation, e.g.
To take stochastic properties into consideration, a non-negative stochastic process X(t) is introduced to include the random properties of all parameters affecting crack propagation.
Also as been stated in linear regression theory, regression coefficients are characterized in normal distribution.This means that m and c (material properties in Paris-Erdogan law) have normal and lognormal distributions as Soboyejo (2001) stated [3].

Finite element method is widely used to study the factors that affect ISR and to improve stent designs to minimize ISR [2,3,5-11].
The material properties of the models are taken from the literature as shown in Table1 [12].
Fig. 1 Models of the artery and the stents Table 1 Material properties Composition Stent Artery Plaque Material Element Model of material Elasticmodulus (GPa) Poisson's ratio Yield strength (GPa) 304 stainless steel C3D8R Bilinearity, isotropy 193 0.27 0.207 Calcified plaque C3D4 Linearity, isotropy 0.00175 0.499 Calcified artery C3D4 Linearity, isotropy 0.00219 0.499 The stents are virtually deployed inside the artery using the commercial tool ABAQUS.
Moreover, the stent is implanted in the artery perpetually, so the service life of the stent is also affected by the structural mechanics.
A long-term mechanical effect of stent scaffolding would exist because of the existing of stent.

The mechanical properties of these materials are also adversely affected at elevated temperature [5].
Such properties could overcome shortcomings of cobalt binder in the WC-Co composites [9, 10].
Sikka: Properties, processing and applications of iron aluminides, M.A.
Chaturvedi: Effect of boron additions on microstructure and mechanical properties of a DS gamma prime -Ni3Al base alloy.
Ahmadian, Sintering, Microstructure and Properties of WC-FeAl-B and WC-Ni3Al-B Composite Materials, in School of Mechanical, Materails and Mechatronic: (The University of Wollongong, Wollongong, NSW, Aus. 2005). 6.

The complex thermal cycle produced during the WAAM processing results in mixed microstructure (coarse and fine grain) in the whole part, which is harmful to the mechanical properties [4].
The previous investigations highlighted that the different surface treatments (ion beams, currents and energy densities, et al) refine grain size and improve mechanical properties [17-20].
Additionally, there is a melting phenomenon after surface treatment. there are some microcracks formed in the boundaries which are affected the tensile properties.
Papadimitriou, Microstructural changes accompanying repair welding in 5xxx aluminium alloys and their effect on the mechanical properties, Materials and Design. 27 (2006) 968–975
Wang, Effect of heat input on microstructure and mechanical properties of Al-Mg alloys fabricated by WAAM, Applied Surface Science. 486 (2019) 431–440