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The main factors that influence macro-quality are the method of slicing, grinding and polishing.
If the quality of substrate is a little poor, it would make the LED with a bad light-emitting properties and even lead to failure of LED production [6].
This article analysis the factors which affect micro-quality of substrates from the process of machining, the factors are the method of wafer slicing, grinding, the composition of slurry, the process of polishing and so on.
The mechanical action provided by abrasives of one of the main factors affecting the speed of polishing.
Conclusion The factors which affect micro-quality are the method of annealing of crystal, the method of slice of wafer, the method of grinding of substrate, the method of polishing of substrate.

During the sintering, rigid reaction products can be formed which are very harmful to the mechanical properties.
By logical examining the relationship between technological steps, we can pick out the factors influencing the product's properties (such as porosity).
All factors, which contribute to the desired properties/product, have to be marked.
Consequently, the diagram is suitable for mapping technological problems, since it takes into account all factors that may affect the properties.
By understanding their mechanism, the amount of porosity can be reduced, preventing the deterioration of the mechanical properties.

However, no detailed study has investigated the effects of mechanical stress on the magnetic performance of TMR heads, particularly with regard to nanoscratching.
To investigate the effects of scratches on the magnetic properties of the TMR head, we measured the scratch depths by atomic force microscopy (AFM).
Thus, the magnetic properties of the shield are clearly affected by the presence of nanoscratches.
On the other hand, the line width Δf depends only on the magnetic damping factor α.
This affected layer can be removed by IBE.

Many researchers have been done so far on FSW of different Aluminum Alloys related to maximum travel speeds achieved and the respective mechanical properties.
The travel speed was varied while all other factors were kept constant.
Both these factors contribute to the temperature increase within and around the NZ.
Malek, Effect of Friction Stir Welding parameters on the microstructures and mechanical properties of 304 Stainless Steels, Eng. of Metall.,30 (2009) 26-30
Jung, Evaluation of the microstructure and mechanical properties of friction stir welded 6005 aluminum alloy, Mater.

Tool materials and cooling conditions are the major factors to affect wear of drill bits.
The factors of affecting wear of drill bits were discussed, such as tool materials, cooling condition, spindle speed and apex angle.
The factors of affecting wear of drill bits were studied through single factor test.
During machining of fluorophlogopite ceramics, the cooling condi- tion is one of mainly factors to affecting tool wear rate.
The factors of affecting wear of drill bits are tool materials, cooling condition, spindle speed and tool angles.

Introduction Factors in addition to shooting the ball must have the correct action.
Basic Theory Into the basket angle is an important factor affecting the ball into the basket.
Until better techniques are developed, average strain and average stress measures are the closest to real material properties that can be obtained.
Sarracino: Mechanical properties and modelling of a hydrophilic composite used as a biomaterial, Composites Science and Technology, Vol.66 (2006), p.92-101 [8] T.
Delp: Several factors affect knee flexion in swing phase, Gait & Posture, Vol.5 (1997), p.176-177

The overall result of the above factors is the formation of a complex of physicochemical properties in NCPM significantly (and in some cases many times: in terms of gas permeability, resistance to cracking, sb/sy at 110 °С, etc. [15, 16,] exceeding the normative properties of the initial base industrial polymer-HDPE.
The same factors also increase the thermal properties in HDPE +Z samples (sample No. 3 from Table 3).
An important factor in the formation of a new higher level of NCPM properties should be the adaptive transformable magnetic-dimensional properties of the nanomodifier to the given thermoplastic [18].
[10] Petrov AV Thermodynamics of mixing magnetically filled polymer composites: the influence of interphase interaction on magnetic and mechanical properties.
Features of the formation of physical and mechanical properties of dispersed-filled crystallizing thermoplastic nanocomposites.

The welded coupons were characterized for microstructural observations and mechanical properties such as tensile and Charpy impact properties.
Introduction Light-weight metals find wide applications in aerospace, automotive and marine sectors owing to their high specific mechanical properties and low density [1, 2].
FSW of aluminum alloys has been carried out in the existing literature and the properties studied include microstructure, mechanical properties such as microhardness and tensile properties [13].
All these factors results in the increased impact property at elevated temperature as can be observed from Table 2.
Niu, Comparison of microstructure and mechanical properties of TIG and laser welding joints of a new Al–Zn–Mg–Cu alloy, Mater.

Microstructure and Fatigue Crack Growth Behavior of Heat Affected Zone in P92 Steel Weldment B.J.
High fatigue crack growth rates were found along the fusion line and fusion line+2mm line into the heat affected zone. 1.
These different microstructural sub zones in the HAZ reveal different mechanical characteristics in hardness, fracture toughness and fatigue properties.
Fig.4 and 5 show the relationship of crack length (a) vs cycle (N) and fatigue crack growth rate (da/dN) vs �K (stress intensity factor), respectively.
Hence, a safety factor, should be introduced when the fracture and fatigue properties of base metal are substituted for those of HAZ.

A better understanding of the dynamic mechanical properties of the composite will help to define structure/property relationships as it is sensitive to internal structure and subsequently to relate these properties to the product final performance, Kaynak et al. [1996].
Khatibi et al. [2002] studied the existence of different interphases in the composites using DMA and found that cyclic loading affects the fibre-matrix interfacial properties in the composites.
Fouad et al. [2005] observed that pre-heat treatment process on UHMWPE strongly affects its mechanical and visco-elastic properties.
There are different parameters affecting the molecular motion within the matrix.
Landel: Mechanical Properties of Polymers and Composites (Marcel Dekker, New York 1994).