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There are many limits and requirements to shot peening, such as exposure time, distance, angle, coverage etc. the effects would be far from satisfactory if any factors above has problems, that will be a significant impact on flight safety.
Peening a metal surface spreads it plastically, causing changes in the mechanical properties of the surface. the plastic deformation generally considered as a Cyclic Strain, can change the organization structure and stress state in strain layer[3, 4].
Analyse and Summarize Shot peening to Aeropropeller pitch change knob is a extremely complex process, only two common factors are mentioned in this paper.
Besides all the above have discussed, many other factors will have an affect on the shot peening process, such as what type of Almen strip be used, the strip holder which is made to simulate pitch change knob, nozzle size, blastpressure, media flow and so on.
All those factors need further discussion.

String tension is only one of several factors affecting string plane stiffness.
Other factors include head size, number and spacing of the strings, string diameter and string type.
Such a result is indicated by laboratory tests of physical properties of strings (s), which show that all strings made from the same basic material (gut, nylon, polyester or Kevlar, in increasing order of stiffness) have very similar physical properties.
Mechanical, 1991,26, 67-73
Objective biomechanical description of tennis racket properties [J].

Technological factors acting (operating) on the technological head The most important part of the whole device is represented by the cutting head with a nozzle, which affects not only the quality of cut, but also the quality of jet.
Pressure - One of the most important factors, which influence the division of materials, is the working pressure.
When choosing the abrasive, the most important factors that affect the cutting process and division of material are [1, 12]: Price - represents the costs of providing the abrasive and makes up to 50% of the total costs.
Bicejova, Categories of factors influenced on hydroerosion, in: Proc. 13th Int.
Cincio, Comparison of mechanical properties of surface layers with use of nanoindentation and microindentation tests Metalurgija 51/3 (2012) 309-312

Introduction Ultrafine-grained materials have been studied by many scholars due to their excellent physical and mechanical properties.
This is an important process for a material’s microstructure and mechanical properties.
Therefore, these two factors make recrystallization more likely to occur.
Thus, for some metal materials, within a certain temperature range, the temperature will affect flow properties.
Therefore, deformation at a relative lower temperature and an appropriate speed is increased the material’s mechanical properties.

However, the determination of resilience modulus of subgrade is difficult, and we can see from a large number of experimental results and engineering experience that the determination of resilient modulus greatly affected by human factors.
CBR as a subgrade indicator which less affected by man-made factors can reflect the strength of subgrade under adverse conditions of the humidity affection.
But for a particular soil, since it has specific mechanical properties, so CBR and modulus of resilience is associated with each other.
There is remarkable positive correlativity between indices tested in laboratory and the reason is mainly because field test is affected by the factors of climate and experiment condition while laboratory test can avoid the impact of climate, test conditions and other factors .Due to the differences in regional, test condition and soil, all kinds of relation the paper set up has some limitations, so, the application of relation must be paid to the comparison and analysis.
[3] J.M.Lin,S.K.Chen,Analysis on the influence factors on the rebound modulus of subgrade soil [J].

In general the residual stress state of a welded structure is affected by the interaction of mechanical, thermal and material factors.
In practice, the superposition of these three factors results in characteristic residual stress distributions controlled by the dominating effect in each case [4-5].
The mechanical properties of the steel are shown in Table 1.
Table 1: Mechanical properties of the base material Rm [MPa] Rp0.2 [MPa] A5 [%] Z [%] 620-795 485 20 48 Fig. 1: Schematic of the joint configuration showing the position of the heating mats used for heat treatment The parameters shown in Table 2 were kept constant for all test welds.
Withers, On the evolution of local material properties and residual stress in a three-pass SA508 steel weld, Acta Mater. 60 (2012) 3268-3278

The machining does not equal the composition of the physical properties of metal forming, it involves forces or active and inactive stocks.
Introduction The superalloys Bronze Aluminum materials are of paramount importance in the industry and have great job in process equipment, shipbuilding, electronics and aeronautics, due to their excellent chemical and physical properties as corrosion resistance and high strength at elevated temperatures.
The screws of turbine blades, which are constantly subjected to high temperatures, have parts made of material which allows the coping not only the effect of heat but also the cavitation erosion, one of the factors responsible for corrosion.
Table 1 shows the properties of aluminum bronze C63000 series.
One of the factors affecting the morphology of the chips was the cutting speed (vc). 4.

This erosion could be described by 5 factors and in 3 phases: no erosion, erosion front beginning and rising rapidly, slowdown or stabilisation of the erosion front evolution.
Addition of bio based reinforcement to improve workability, mechanical properties and water resistance of earth-based materials.
USING ALGINATE BIOPOLYMER TO ENHANCE THE MECHANICAL PROPERTIES OF EARTH-BASED MATERIALS 7
Properties of some cement stabilised compressed earth blocks and mortars.
The properties of compacted soil and soil-cement mixtures for use in building.

The Research of a New Method for Manipulating Magnetic Beads through Multi-layered Flat Micro-coils Coupled with Permanent Magnet Zhihua Liu1, a, Yufeng Huang1, b, Jianpeng Li 2, c, Xinwei Xu1, d 1 School of mechanical engineering, Zhengzhou University, Zhengzhou 450001, China 2Henan province institute of metrology, Zhengzhou 450008, China aliuzhihua@zzu.edu.cn, b824397308@qq.com cljp86914@126.com, d410292675@qq.com, Keywords: multi-layered flat micro-coils; magnetic beads; manipulation; simulation Abstract.
Firstly, the theory of magnetic bead manipulation was analyzed and the main factors affected the magnetic beads manipulation was identified; then the magnetic field of multi-layered flat coils and Stokes viscous resistance of magnetic beads were analyzed and simulated quantificationally; finally the magnetic bead capture area was got under different flow velocity.
In order to avoid products’ manufacturing-experiment-remanufacturing, the repeated process, the theory analysis of magnetic bead manipulation should be carried on in static droplet to find out the major factors affecting magnetic bead manipulation, and to optimize the component’s design parameters.
By partially differentiating Equation (2.1), the magnetic force per unit volume, (), in the horizontal x direction can be written as: （2.2） The magnetic force also can be expressed with the magnetic beads material properties and magnetic field gradient： （2.3） Where,,, are magnetic bead volume, permeability in vacuum, magnetic susceptibility, and magnetic induction intensity.
B/T Fig3.3 (a) The gradient of magnetic-field strength curve at path (y=0, the distance from the top flat coil is 250 ) Fig3.3 (b) The value of capture force and stokes viscous resistance under different relative velocity for a single magnetic bead Conclusions （1）The major factors influencing the magnetic bead capture are given, which are the magnitude of magnetic field force and magnetic-field gradient

The factors such as slenderness ratio, eccentricity, gusset plate thickness and spacing were discussed, which produced the impacts to bearing capacity, and the relationship between stiffness and axial load.
Slenderness ratio, eccentricity and gusset plate spacing are the major factors that affected the mechanical behavior, while the gusset plate thickness has no obvious impact.
It suggests that slenderness ratio is the main factor controlling stable bearing capacity of composite column.
The flexural rigidity of eccentric compression column have relationship with material property, section form, slenderness ratio, gusset plate thickness, the eccentricity, axial load and so on.
Experimental study of the mechanical properties of cold-formed thin-walled C Steel Stub Columns[J].