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To sum up, friction stir welding is a relatively complex thermodynamic process, and its hardness distribution is effected by many factors.
Texture and microstructure evolution and mechanical properties during friction stir welding of extruded aluminum billets.
Recent advances in friction stir welding/processing of aluminium alloys: microstructural evolution and mechanical properties.
The influence of multi-pass friction stir processing on the microstructural and mechanical properties of Aluminum Alloy 6082.
[9] Effects of tool sizes and welding parameters of F.C.Liu and Z.Y.Ma. on the structure and mechanical properties of friction stir welding of 6061-T651 aluminum alloy.

The effects of varying higher heat input on microstructure, mechanical properties and pitting corrosion resistance also were discussed.
Welding speed ν and focus height hf (distance of laser beam focus from material surface, positive if over the surface) were selected as factors, while the laser power P was kept constant at 12kW.
The microstructure and chemical composition of the weld metal are the most important factors which correspond to the breakdown of the passive film to the pitting resistance.
Mechanical Strength The mechanical properties, including tensile strength, yield strength and elongation, was measured from the test and the results are shown in Fig.4.
As the basic mechanical properties of normal DSS , they are high tensile strength and relatively low yield strength for all specimens.

In order to ensure the perfect electrical conduction and acceptable mechanical properties, the assembly has to fulfill some drastic holding force criteria.
This outfit is directly dependent on the indentation depth at the end of crimping, on the materials properties and on the geometrical dimensions.
Geometries and mechanical fields are obtained and then exported in the mechanical holding model to ensure realistic prediction.
Fig. 1: Numerical model of a crimping on empty barrel test used for inverse analysis Mechanical holding model set up To perform a mechanical holding simulation of a crimped contact, the mechanical history has to be taken into account.
Behaviour law effects on mechanical holding simulations The first factor which may affect the level of effort and the type of breakage during the tensile test is the material file used for both the cable and the contact.

SEM scanning were carried out to determine the mechanical properties and microstructure of the composite.
The microstructure and mechanical properties were then analyzed.
Powder metallurgy processes, in general, can produce porosity in metal, affecting the physical and mechanical properties.
The volume fraction of magnesium affects the physical properties (density and porosity) as well as the mechanical properties (microhardness and wear rate), where the addition of magnesium from 1% to 1.5% can increase the relative density and microhardness and reduce porosity and wear rate.
Ahn, “Effect of Mg composition on sintering behaviors and mechanical properties of Al-Cu-Mg alloy,” Trans.

The quality of pig iron from the point of view of the customer, that is steel plant, is one of main factors affecting the quality and cost of steel production.
Basic quality tools: statistical methods, control charts and the factors of qualitative ability of the process were used in the analysis.
From the point of view of the steelworks, this element should be present in limited level, which is dictated by the fact that the high phosphorus content [5]: - processing of pig iron in the oxygen converter requires a longer melting by downloading slag, - worsen the mechanical properties of steel.
In addition, the values of factors of qualitative ability of the process were determined.
SUMMARY Quality is one of the fundamental factors of choice of the product by the customer.

However, the quality of the dispersion is the major concern factor which determines the homogeneity of the enhanced mechanical and tribological properties of the composite.
Experiments and simulations showed that CNTs have extraordinary mechanical properties over carbon fibers, e.g. stiffness up to 1000 GPa, strength of the order of 100 GPa [5], and thermal conductivity of up to 6000 W mK.
Due to the high percentage of CNT in the 2 and 2.5 wt % in CNT-Al nano-composite clustering of CNT is much, which could affect the mechanical and the tribological property of the material, because the quality of the dispersion is the major factor which determines the enhance and desired property of the nano-composite.
Tian, H. liu: Tribological properties of short fiber C/SiC Brake materials and 30CrSiMoVA mate.
Boran: Fabrication and properties of dispersed carbon nanotube– aluminum composites.

The effect of vibration on the microstructure and mechanical properties of high-density polyethylene (HDPE) sheets, obtained through vibration plasticating extruder in low temperature, were studied systematically. 
In this work, an attempt is made to enhance the HDPE properties by vibration plasticating extrusion (VPE) process.
We has prepared HDPE sheets using EMDP extruder, and studied vibration force field effect on the microcosmic structure and mechanical properties of the samples.
So the VPE samples have a wider melting range than that of the CSE sample, and these small imperfect crystals are of great benefit to the mechanical properties of the extrudate.
So the vibration could affect the crystallization behavior of polymer.

Introduction Values and vertical gradients of shear wave velocity (Vs) are important physical and mechanical properties of soils.
In addition, several geological investigations have recently used correlations between geological parameters and Vs in predicting the foundation properties [4].
The affecting factors mainly include the physical and mechanical properties of foundation soils, such as standard penetration test (SPT) number N, side friction fs of CPT, cone tip resistance qc of CPT, depth z, void ratio e, compression modulus Es, water content w, density ρ, specific gravity of soil grain Gs and type of soils T.
The affecting factors are defined as the input samples and the corresponding Vs as output samples.
Because the GRNN estimation model considering the comprehensive factors, the predicted results show good agreement with the actual values.

More investigations on such biocomposites are needed to improve fiber-matrix interactions. 1.5 Factors Influencing Composite Properties.
Many factors combine to affect the properties of a composite material; ultimately, however, the properties of a composite are dictated by the intrinsic properties of the constituents.
How these properties are harnessed to reinforce a composite material is largely governed by the same factors that affect other fibre composite materials, namely the fibre architecture and the fibre-matrix interface.
Nevertheless, the properties of a biocomposite may be controlled and indeed enhanced by altering those factors that control composite properties, namely fibre architecture and the fibre-matrix interface.
Properties of Biocomposites: Mechanical Properties.

This paper focuses on the the relationship between strength and ductility of high-strength concrete (HSC) columns with high-strength aseismic transverse reinforcement under concentric compression and its influencing factors.
The fact affects the ductility and energy consumption capacity of structure and limits the use of high-strength concrete structures in strong earthquake area.
Model of Confined Concrete With the study of the mechanical properties of confined concrete by domestic and foreign scholars, it is also proposed the corresponding material model.
They proposed the followed model on the base of these experiments: When,, where ; When, The Han model takes the stirrups and longitudinal reinforcement layout, stirrup spacing, stirrup yield strength, the influence of concrete strength and ductility of confined concrete on mechanical properties into account.
Factors of Binding Effect on High-strength Stirrup Confined Concrete under Axial Compression .