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This approach considers that the main factor affecting the stress field of composites is the existence of interphase between fiber and matrix, which possesses different Young's modulus than those of the constituent phase.
Introduction The most fundamental problems in composite materials are calculating stress field in terms of the properties and relative amounts of the individual materials or phase.
The stress field is an important aid to modeling the micromechanical performance of composite such as failure analysis and prediction of mechanical properties.
The characterization of fiber-reinforced composites is depended separately on the properties of fiber and matrix, as well as on the fiber-matrix and fiber-fiber interaction.
The problems in which the properties of interphase vary continuously have been studied by many researchers.

The mechanical property of as-deposited Cu film was measured by scratch test method.
Theory calculation shows these properties were connected to kinetic energy of atoms in the plasma.
For a deposition process is controlled by adsorption and desorption, there should be mixed factors affecting it.
Second, kinetic energy of atoms plays an important role on films’ properties. kinetic energy of atoms was calculated by Maxwell-Boltzmann assumption.
Results shows that high-energy atoms play an important role on films’ properties.

Moreover, introduction of these quantum dots into commercial production can significantly improve the mechanical properties of the covering films used for greenhouses and slow down the process of their destruction.
The first two factors can be achieved, the latter factor we can control to a less extent.
Main characteristics of the solar radiation, affecting the efficiency of light conversion can be determined by methods given in [22, 23].
Moreover, the introduction of these quantum dots in a commercial can significantly improve the mechanical properties of the film and decrease process of destruction.
Basic methods of testing the effects of external factors.

Surface layer of coated fabric bear the main mechanical properties of coating film, has a great influence on the handle of coated fabric.
First of all, Important order and the best group of factors which affect test indexes were obtained by visual analysis(range analysis) .
Significant of factors was achieved by variance analysis(α=0.10).
Important order of factors was decided according to R value size.
Then the properties of coated fabrics were tested.

RSW process between dissimilar materials are considered one of the most challenging part in material engineering history due to the differences in mechanical properties and microstructure [8].
Titanium alloy is well known for its light weight with high strength mechanical properties.
Metallurgical properties such as phase transformation are commonly ignored in simulation for stress analysis or mechanical analysis [42].
Devise a study plan in reducing the formation of IMCs as an external factor in affecting the capability of the welded joint to retain excess stress. 4.
[26] Mansor, M.S.M., Yusof, F., Ariga, T., Miyashita, Y.: Microstructure and mechanical properties of micro-resistance spot welding between stainless steel 316L and Ti-6Al-4V.

The distribution of residual stresses affects the fatigue life and stress corrosion resistance of the components in service.
The reliability of a mechanical component depends on a large extent on the physical state of its surface layers.
The direct influence of residual stresses on the functional behavior (the static and dynamic strength, chemical and electrical properties, fatigue, rust, etc.) of the component was relatively well known [5].
Experiment Design Material properties, grinding wheel, coolant and equipment.
Results and Discussions As the general machining process, the residual stresses on grinding surface are determined by three factors, the plastic strain caused by mechanical effect, the thermal stress, and the volume variety caused by metallographic transformation.

Friction may be affected by the following factors [3]: (1) surface texture; (2) normal loads; (3) sliding speed; (4) environmental conditions such as temperature and lubricants; and (5) material characteristics.
-0.591 -0.608 -0.475 -0.541 0.488 0.434 saliva 100 -0.178 0.081 0.073 0.124 0.099 -0.119 -0.14 200 -0.401 0.45 0.454 0.383 0.407 -0.386 -0.371 300 -0.404 0.607 0.64 0.439 0.522 -0.452 -0.399 To gain a better understanding of the factors affecting coefficient of friction, we examined the friction coefficient in three-dimensional plots of friction coefficient, wire diameter, and pore size.
A negative coefficient indicates an inverse relationship between impact factor and friction coefficient.
Overall, the most significant factors were wire diameter and pore size.
Tribological properties of patterned NiFe-covered Si surfaces, Tribology Letters 35 (2009), 199-9

In this study variations of the mechanical properties as well as wave interlocking have been related to the conformation of the interfacial waves (IW).
The interfacial waves result in a significant deterioration of the final product's properties of interest (i.e. barrier, mechanical, optical, etc.).
These irregularities are due the to different rheological properties of the material used and can significantly deteriorate the mechanical or optical properties of the product.
MATERIALS PROPERTIES AND PROCEDURE Two polymer systems utilized in these experiments are HDPE and PP.
The figure clearly shows effects of the stable/unstable interface on the mechanical properties of extrudate products.

Comparison for experimental values of fcu and fts with calculated values using linear fitting Main conclusions (1) Porosity is the main factor affecting the strength of pervious concrete, and the impact on compressive strength is greater than that on splitting strength
Several factors impacting on the performance of porous pervious concrete, Journal of Building Materials, October 2005.
Influencing Factors of Strength and Water Permeability of Pervious Concrete, Concrete 3, 2008 (total No.221).
Experimental Study on Physical and Mechanical Properties of Pervious Concrete.
Experimental Study on Number of Influencing Factors to Strength and Contractile Properties of Pervious Concrete.

We have applied this fine grain material to cement mixes and compared their mechanical properties.
Introduction Filler used for cement mixtures, accounts for 70 to 80% of the volume of mixtures, is for its quality one of the decisive factors.
The properties of bond between the binder and the aggregate are based on many factors.
As fundamental physical material characteristics, bulk density ρb [kg m-3] and mechanical properties [MPa] were determined.
The effect of fine grain corundum on mechanical properties of the concrete was investigated by compressive and adhesive strength measurement.