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Many researchers have worked very hard to develop thick laminated composite materials that are safe and more cost-effective by carefully considering factors like the number of layers, the angle of the fibers, the distribution of the laminates, etc.
In [3], experimental analysis was used to study the vibrational properties of an edge-cracked composite plate.
The AFESPI approach was used to examine the vibrational properties of a composite plate with an edge crack.
A free vibration test on a standard plate was used to evaluate the dynamic properties of the plate composites.
The vibrational properties of the composite plates were measured using the pulsed excitation technique [11].

In recent years, laser cladding ceramic coatings have attracted wide interests because of their better properties.
Most researchers have focused on the microstructure and properties of the laser-clad ceramic coatings [1-4].
The dilution rate is an important factor in the performance of laser cladding [5-6].
If the dilution rate is large, a large amount of substrate material will be mixed into the ceramic coating, thus affecting the coating properties.
It is necessary to control dilution ration based on the select a comprehensive multi-factor process parameters.

The objective of simulating bolted joints properties can be achieved through parameterized modeling method to simulate the 5 stiffness simultaneously.
Parameterized simulation and modeling for bolted joints The bolted joints stiffness factors in the rotor and stator system is mainly determined by the axial tension and compression stiffness.
This section has rationally simulated the bolted joints stiffness properties based on the mechanics characteristics of bolted joints structure in aero-engine system.
Firstly, the theoretical derivation has carried out to the mechanical properties of bolted joints based on the thin layer elements, and the equivalent parameters for different stiffness that need to simulate have been identified, which provides theoretical basis for parameterized modeling.
And then this paper explored to use the parameterized modeling method based on spring elements to simulate the bolted joints properties.

Surface treatment has affected the properties of the composite panel by increasing the interlaminar fracture toughness by a maximum of 53% at a 5.8vol% silane concentrations.
Silk has very good mechanical properties and is widely used in the textiles industry due to its luster [3].
Composite properties have a very strong dependent on the interphase between fibers and polymers [4].
The interphase properties can be determined by a surface treatment on the fibre which is applied during the manufacturing process.
Interfacial strength between the fibre and matrix has been a very important factor affecting the interlaminar fracture toughness of fibre reinforced plastics composites.

Surface treatment and number of woven silk fibre layers has affected the interlaminar fracture properties of the composite panel.
Silk has very good mechanical properties and widely used in the textiles industry due to its luster and strength [3].
Structural materials made from woven silk fibre reinforced epoxy composites require further improvement in order to increase their interlaminar fracture toughness properties.
Composites properties have a very strong dependent on the interphase between fibers and polymers [4].
The interphase properties can be determined by a surface treatment on the fibre which is applied during the manufacturing process.

And within the certain value, the impact properties can be improved by adjusting the end desired impedance inertial parameter and the virtual impedance inertial parameter respectively and reasonably.
In noncontact impedance control, the viscosity parameter of the end desired impedance can affect the impact stabilization process, but have little effect on the stability value.
The virtual impedance viscosity parameter is an important influence factor for the stable value and peak value of the impact.
And the stiffness parameters should keep the system at critical or over damping state without weakening mechanical properties of the impact.
However, because of the complicated inside factors and outside interference, the scientific quantitative coordination principle of the parameters hasn’t given out yet.

The optical, chemical and mechanical properties have been investigated using UV-Vis spectroscopy, FTIR and Micro-indentation tester, respectively.
Various studies of the effect of ionizing radiation on the properties of polymers has shown that there is an improvement in the properties of polymers such as electrical, optical and mechanical properties as well as the properties of the polymer surface [1-5].
It was found that the main factors causing the modification of these properties is the creation of unsaturated bonds, the chain scission, cross-linking, and the formation of volatile fragments and clusters of carbon atoms [6–14].
As a result, the physical properties of the polymer material may be changed such as optical, electrical, mechanical and compositional properties [19 - 21].
The main purpose of this paper is to study the damage, optical chemical and mechanical properties of the bombarded low density polyethylene to deepness of knowledge about the influence of ion beam bombardment on the properties of LDPE.

This paper summarizes the properties of the CFC as well as the appropriate material and geometry of the cutting tool that should be used when drilling of the CFC in order to optimize the drilling performance.
Furthermore, higher cutting speed and lower feed rate are also recognized as significant factors which contribute to rapid wear of the cutting tool.
Introduction Composites are advanced engineered materials which have outstanding performance due to the combination of superior properties from two or more different materials within them [1].
Furthermore, the fibreboard contained high composition of sulphur which can react with cutting tool during machining and oxidation of the cutting tool would also occur when it is operated at high cutting temperature and these factors weakened the cutting tool.
Cong, A review of mechanical drilling for composite laminates, Composite Structures. 94 (2012) 1265-1279

Removal efficiency and impact of the factors will be studied by expriments.
In which although a activated carbon, but its poor mechanical strength; while silica is generally 600 ~ 700 ℃, has begun a noticeable sintering, which is not conducive to the load of metal oxides.
In comparison, Al2O3 has large surface area, mechanical strength, strong adhesion with the active substance, and not easy to come off, so Al2O3 loads metal oxides as a carrier and studies them in the ozone in the catalytic reaction.
Baking temperature is the main factor affecting catalyst performance.
Surface Hydroxyl Groups is an important surface properties of metal oxides in the water, organic compounds adsorbed on the catalyst surface after the catalytic decomposition reaction to continue.

A selection of the appropriate technique is of importance since it affects thixotropic properties of the semi-solid slurry.
The microstructural factors, which have an important impact on thixoforming process and resultant mechanical properties of the final product include the globule shape and size, a fraction of the liquid metal entrapped inside it, as well as distributions of liquid and solid phases in the semi-solid slurry [2, 3].
These regions of micro-eutectics decrease the effective liquid fraction, present between globules, thus negatively affecting the alloy flow behavior during semi-solid processing.
The globule inhomogeneity is affected by chemical micro-segregation.
Luo, Microstructure and properties of AZ80 alloy semisolid billets fabricated by new strain induced melt activated method, Trans.