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Despite the high strengthening potential of Al-Mg-Si alloys, processing factors such as the artificial aging processes, as well as the duration of artificial aging, can seriously impede the strengthening process.
It was to determine how aging process affected the microstructure and mechanical properties of the A6082 alloy as different ratio between Mg and Si.
It was to determine how Mg/Si atomic ratios affected the microstructure and mechanical properties of the A6082 alloy.
Furthermore, the effect of process parameters such as aging conditions affecting desired mechanical strength for automobile bumper was investigated.
The mechanical properties of A6082 alloy extruded bar were measured with ASTM B 557M – 07 specimen, respectively.

Introduction In any welding process the input parameters have an influence on joint’s mechanical properties.
By varying the input process parameter’s combinations, the output would be different welded joints with significant variation in their mechanical properties.
The variations in the process parameters affect the mechanical properties with great extent.
Among these elements Cr, Mo and Mn are the most important and influencing the weld properties.
The current is not so significantly affecting the hardness of the welded joint.

Characterization on Optical and Mechanical Properties of Low-density Polyethylene Films Doped with Eu(III)complex Mohd.
The mechanical properties of the films were measured according to ASTM D882, and ASTM D1938 standards.
The important environmental factors affecting plant growth are temperature, relative humidity, light level, and carbon dioxide [3].Greenhouses are covered with transparent material that transmits visible light (400–700 nm), the main source of energy for photosynthesis and Lozano (1996)  emphasized the importance of good light permeability in increasing greenhouse crop production [4].
In addition, polyethylene possesses relatively good mechanical and optical properties, combined with a competitive market price [5,6].
This is due to the small percentage of the complex which does not affect the properties of the films in transverse orientation.

Application of Vickers Indentation Cracking to the Evaluation of Mechanical Properties of Very Thin Metallic Films Y.
Nakamura1, a 1Department of Mechanical Engineering, Graduate School of Science and Engineering Kagoshima University, Kagoshima, Japan anakamura@mech.kagoshima-u.ac.jp Keywords: Mechanical properties; Thin metallic film; Vickers indentation cracks; Crack opening displacement Abstract.
In order to guarantee the structural integrity of such thin film coatings, it is necessary to evaluate the mechanical properties of the film coatings.
In most cases, the mechanical properties of thin films are estimated by means of nanoindentation techniques.
Values of parameters used in the evaluation of tensile properties.

In piezoelectric ceramic/polymer composites the interface adhesion is always a problem affected the properties of piezoelectric composites[4-6].
In recent years, piezoelectric ceramic or piezoelectric ceramic composites gained more and more attentions for acting as damping materials[9,10], but the interface adhesion between piezoelectric ceramic particle and resin molecular is still a factor affected the microstructure and damping property.
Storage modulus E¢ and loss modulus E² of composite can be obtained then loss factor tanδ equals the ratio of E²/E¢.The dielectric properties were measured using an Agilent HP4294A impedance analyzer at frequency of 1MHz and at room temperature.
In composite filled with particles, there is interface phenomenon, and the interface affects the glass transition temperature and damping properties.
Effect of Silane Coupling Agent Pretreatment on Dielectric Properties of PMN/EP Composites.

The moisture percent of these products also influences their properties, such as dimensional stability, mechanical properties, resistance to decay and etc., while the wood hydroxyl content affects their water absorption [5, 6].
Physical-mechanical properties.
Values of mechanical properties after uniaxial tension test.
Values of mechanical properties after three-point bending test.
A non-monotonic nature of the above-described functional dependencies of some mechanical properties of the WPC may be related precisely to the inhomogeneity of the material which is an important factor affecting the quality of its surface both before and after the machining process or the value of the surface roughness parameters Rz and Ra at various places on the surface of the tested WPC sample.

This may lead to the degradation of their mechanical properties.
There is no loss in mechanical properties of that composite[1].
There are several factors that will affect the rate of moisture absorption.
Those factors are atmospheric moisture content, thickness of composite, ambient temperature and the type of the polymer.
Thus, their mechanical properties will be deteriorated [14].

In addition to the interface, the CTE of particle reinforced metal matrix composites (MMCs) is affected by several other factors.
Stir casting technique was used to fabricate composites containing Si Cp as reinforcements and special thermo physical properties of the material are found.
Material properties desirable for satellite applications include tailorable and/or low coefficient of thermal expansion (CTE), extremely high thermal conductivity, high stiffness and strength, and low density.
In addition to the interface, the CTE of particle reinforced metal matrix composites (MMCs) is affected by several other factors.
In addition to the interface, the CTE of particle reinforced MMCs is affected by several other factors.

The MEMS technology is applied in fuze, since it meets the requirement of the fuze design, such as impact resistant properties, corrosion resistance, long storage, and etc.
Based on the analysis of the structural characteristics of the MEMS S&A, there are many factors may affecting the reliability.
We divided them into two major aspects, mainly including the internal factors and external factors.
Table 1 Failure relationship matrix Reliability factors Failure modes Plastic Deformation Fracture Creep Fatigue Internal factors (bubbles, porosity etc
) √ External factors Collision √ Vibration √ High impacts √ √ Extreme temperatures √ Dynamic Simulation Analysis Based on the above analysis of reliability factors, we select some factors that are more typical to do dynamic simulation analysis, details are as follows: Simulation Analysis of Internal Factors.

In this study, the effect of infill density, layer thickness and extrusion temperature on mechanical properties of polylactic acid (PLA) part manufactured using fused deposition modelling process was investigated to obtain optimum process parameters to achieve the best properties.
Rahmati and Vahabli [11] identified the tessellation of the digitalised model and slicing procedure as most influencing factors affecting surface roughness of built parts in FDM process and developed models to improve the surface quality by reducing the staircase effects.
Taguchi design was employed to plan the experiment and grey relational analysis in combination with principal component analysis for factor weight determination was adopted to determine the unified FDM process factors that optimised all the considered mechanical properties at once.
Table 1 Physical and Mechanical properties of PLA plastics [18] Property (unit) Value Density (g/cm3) 1.21 – 1.25 Melting temperature (oC) 150 – 165 Tensile strength (MPa) 21 – 60 Hardness (HR) 88 Process factors and experimental design.
In this study, the filament extrusion temperature, infill density and layer thickness were selected to observe their influence on the mechanical properties of FDM fabricated parts while other process factors were kept constant.