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A key factor affecting the use of carbon fibre reinforced composite laminates is the low velocity impact damage which may be introduced accidentally during manufacture, operation or maintenance of the component.
They can also be formed into virtually any shape and offer optimized mechanical properties through a combination of fibre, matrix and interface conditions [1].
It can be seen clearly that the second impact on the same laminate doesn’t affect the impact duration.
Both the laminate thickness and the impact energy level may affect the detection of the DTL.
The residual stress from the curing process may also affect the behavior of the laminate under low-velocity impact.

Practice shows that the type of kernel function, kernel parameters, and penalty factor is one of the key factors affecting the performance of the SVM, so research SVM parameter selection method for support vector machine development has a very important practical significance.
For a given set of observations:, optimal decision function can be constructed in a high -dimensional feature space: (1) Where w and b are regression factors, which can be gained by minimizing the following regularized risk function (2) Among them, control model complexity, C is the penalty factor to control the degree of experience in risk of punishment; is error control function, error control function commonly used linear loss function, quadratic loss function, select a different loss function can be constructed in different forms of support vector machines.
After a given training set and selected kernel function parameters that affect the performance of SVM main penalty factor and nuclear parameters.
Using support vector machine to predict, to select parameters is important, if the parameter is selected unreasonable, it may result in the calculation of under- and over- learning phenomena, which directly affect the prediction accuracy.
Journal of Mechanical Strength, 2008, 30(3):349-353

At the same time, the vortex of down-raised happened at the back location, which is more closer to the passenger’s ear, and affect the car interior noise.
Introduction Car noise level is one of the most important performance parameter which is the main factor that affects the interior comfort.
The noise of passenger cars is related to car shape, cruising speed, wind direction, atmospheric properties and other relevant factors.
Among all these factors, car shape, especially rearview mirror and the A-pillar shape are the most important infections to aerodynamic noise.
The model is widely used in the turbine mechanical calculations afterwards.

The PM processing variables are obviously important factors that affect the resultant material properties.
Keraghel et al. [5] states that increasing compaction pressure improves the resulting mechanical properties.
The porosity level effects the relevant properties such as wear resistance, thermal stability and wear rate [1-3].
Consequently, the forming variables are an important factor to understand in order to control the porosity level and the resultant properties.
Jabur, Effect of powder metallurgy conditions on the properties of porous bronze, Powder Technology, (2013) 477-483.

Considerable aerodynamic loads that affect the high-lift devices make them being most often operated hydraulically (via hydraulic circuits).
The balance of fluid flow rates: (1) (2) The balance of motion of the hydraulic cylinder driving unit: (3) where: – flow intensity caused by external leaks, – liquid-holding capacity of the cylinder, – flow intensity caused by the compression of the hydraulic fluid, – flow intensity caused by internal leaks, B – coefficient of friction, m – weight of the driving unit referred to the piston rod axis, y – linear displacement of the piton, PS = y – force applied to the piston rod, Nkl – wing-flap affecting load factor.
of hydraulic circuit; KV – volumetric loss factor; m – mass of a driven unit as referred to the actuator’s piston-rod axis; NKL – wing-flap load factor; p0 – working pressure; T1, T2, T3 – constants of hydraulic circuit; α– flow ratio, V1 – volume of the actuator’s piston, EC – bulk modulus of elasticity of the fluid, l - flow-rate distribution coefficient.
Improper functioning of the hydraulic circuit can result from some increase in friction force, the main reasons for which being as follows: contaminants in working fluid; operating the hydraulic circuit with fluid of physical properties other than required; faults in the actuator manufacturing technology (e.g. increased roughness of the hydraulic-cylinder bearing surface); improper servicing (resulting in, e.g. actuator’s piston-rod corrosion); others.
It results from the fact that aerodynamic load affecting actuators increases as the flaps get extened.

During the production the quality of magnesium strips can be reduced by segregations, which also influence the distribution of the mechanical properties.
Inhomogeneity has a negative impact on the formability, which also affect the properties in transverse direction.
Supporting the thesis TRC magnesium strips are shown, which have different thickness profiles, mechanical properties and proportions of segregations.
However, the remaining part of segregations has a negative effect on the mechanical properties in transverse direction.
The segregations have in turn impact on the mechanical properties in transverse direction of the TRC strips.

Microstructure control of potassium niobate porous ceramics and their sensor properties Kazuki Maeda1,a, Kenta Yamashita1, Ichiro Fujii1, Kouichi Nakashima1, Tohru S.
Their piezoelectric properties were measured and a relationship between porosity, pore size, and sensor properties was studied.
Then, a relationship between porosity, pore size, and sensor properties was studied.
The dielectric properties of the ceramics were measured at room temperature and 1MHz using impedance analyzer (Agilent Technologies Co., HP4294A).
Their piezoelectric properties were measured and a relationship between porosity, pore size, and sensor properties was discussed.

A transformer is considered usually an electromagnetic device that is subjected to several stress factors, which are due to dielectric, thermal and electrodynamic conditions.
Usually it is necessary an annealing treatment, to have again the high quality magnetic properties [5].
The material properties and the geometrical dimensions of the tested materials are presented in Table 1: Table 1 Properties and geometrical dimensions of the investigated samples.
Scutaru, The effect of mechanical and electrical discharge cutting technologies on the magnetic properties of non-oriented silicon iron steels, Rev.
Scardi, Laser and mechanical cutting effects on the cut-edge properties of steel S355N, JCSR 133 (2017) 181-191

However, the amount of risk is dependent on the nature and volume of the oil besides other abiotic factors such as the sensitivity limit of the marine habitat.
These factors create limitations, which possessa challenge in recent years.
Factors limiting oil spill mitigation Oil spill clean-up is a rigorous exercise due to several factors that influence its control.
Some of these factors are discussed briefly as follows: Salinity.
Intrinsic absorbing properties.

Some researchers have improved the mechanical properties of cordierite ceramics by the method of toughening with zirconium oxide and preparing cordierite-mullite composites [4, 5].
In traditional opinion, the presence of glassy phase destroys the good dielectric properties of cordierite.
But some experiments, in which the (Ba, Ca)-MgO-2Al2O3-5SiO2 system was used for preparing cordierite crystallite glass, have proved that crystal grain boundary remnant glassy phase does not affect on materials dielectric properties [6, 7].
Moreover, the mechanism of liquid-phase-sintering affecting on the cordierite mechanical properties was studied.
Materials porosity and mechanical properties.