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The paper presents the results of the strength examination of the influence of the different ways of layered polymerization processing on the mechanical properties of modern hybrid micro composite material with regards to the following quantities: compressive strength, strain to fracture, modulus of elasticity and work to fracture.
Composite material characterized with the low flow factors determining stress relief by viscous flow were the most promising ones [10].
The registered tendency is: the thinner the layer, the better the mechanical properties.
Increased temperature accelerates the polymerization of the composite and reduces the material viscosity, affects the process of composite material cross-linking what results in the increase of its strength properties.
Berglund, Effect of light power density variations on bulk curing properties of dental composites, J Dent. 31 (2003), pp. 189 – 196

Tensile Properties and HAZ definition for TIG and EB welds using Electronic Speckle Pattern Interferometry (ESPI) Yannis Kyriakoglou 1,a, Michael Preuss 2,b, Paul Bowen 3,c 1 Rolls-Royce plc, PO Box e1, Derby, DE24 8BJ, UK 2 The University of Manchester, P.O.
Electronic Speckle Pattern Interferometry (ESPI) is used in conjunction with a mechanical test rig to determine the tensile property response when loading cross weld tensile samples of Tungsten Inert Gas (TIG) and Electron Beam (EB) welded Inco718, which include the parent metal, Heat Affected Zone (HAZ) and weld metal.
When using more realistic mechanical properties for the weld and HAZ, as determined by ESPI/tensile testing, the maximum estimated plastic strain for certain stress conditions is nearly 6 times higher than the plastic strain predicted using the same material properties for the weld as in the parent (as suggested by the microhardness mapping).
As expected, it was also found that the different weld / HAZ properties affect the volume of the component that undergoes plastic straining.
Section of model indicating the effect of weld/HAZ properties on the volume of material that goes plastic (b).

Results showed that quadrature error is the primary factor of affecting gyro’s performance; the error caused by mass center deviation of vibration beam change with angular acceleration, which can be ignored under the condition that small angular acceleration.
Moreover, the main factors influencing the performance of gyros have been discussed, which provides the theoretical guide to improve the performance of vibration beam gyroscope.
(12) Figure 2 Scheme of position between gravity center and suspension center Figure 3 Sketch of non-vertical structure Where δ is transmitted coefficient, which depends on properties of the material.
Mechanical coupling error of silicon microgyroscope[J].
The Study of Mechanical Coupling in Quartz Micromachined Gyroscope System[J].

Mechanical properties in the weld and base metal were therefore determined by performing a series of instrumented indentations across the weld at room temperature.
Mechanical properties of 15Ch2MFA (base metal) as well as 10ChMFT (weld) steels can present a gradient through the wall thickness, which can hardly be assessed by conventional testing such as tensile or Charpy tests.
Conclusions Local mechanical properties in form of the local stress-strain behavior were determined by so-called automated ball indentation technique in the weld, base metal and cladding of WWER 440 pressure vessel wall.
Although the ABI test is a macroscopic technique, it estimates the properties on a small volume of material (few grains), which is particularly useful in testing e.g. welds and irregularly shaped heat affected zones.
Oliva, Determination of the elastic-plastic properties of 15Kh2MFA steel with austenitic cladding.

Orthogonal experiment 1 Program of orthogonal experiment The main factors of that affect the performance of Metal Rubber are annealing temperature, annealing time, metal rubber density and cooling.
(3) In the 4 factors, cooling method was the most influential factor on both static loss factor and dynamic loss factor.
(1) The static and dynamic loss factors were significantly affected by the relief annealing parameters which including annealing temperature, annealing time, Metal Rubber density and cooling methods
Beijing: Mechanical Industry Press, March 2006
[5] GB/T14465-93, Nomenclature for specifying damping properties of materials [S].

Design of experiment techniques has been used for different effective welding parameters (laser power, welding speed, and focus position) to optimize the dissimilar F/A joints in terms of its mechanical properties.
Three factors with five levels each (L-25) were employed in these models.
Hence, the most important mechanical property in this case is the impact strength [8].
ii) Laser power is the main factor affecting the response.
v) The model developed can adequately predict the response within the factors domain.

The latter was apparently caused by several factors, such as a marked reduction in the density and cell size, and an increase in the content of closed cells in composite foams compared with that in the neat ones.
The results discussed suggest that the introduction of nanocellulose fillers generally has a beneficial effect on the mechanical properties and thermal conductivity of rigid low-density PU foams.
It should also be noted that the modification by a nanofiller may cause a variation in the density of free-rise foams, which itself affects their mechanical properties and has to be taken into account when evaluating the efficiency of reinforcement [9].
Rigid PU foams were synthesized using polyols derived from ethanol organosolv lignin, and the effect of CNC reinforcement of 0, 1, and 5 wt.% on foam properties was studied in [5].
Ashby: Cellular Solids: Structure and Properties (Cambridge University Press, Cambridge 1997)

However, the quality of the dispersion is the major concern factor which determines the homogeneity of the enhanced mechanical and tribological properties of the composite.
Experiments and simulations showed that CNTs have extraordinary mechanical properties over carbon fibers, e.g. stiffness up to 1000 GPa, strength of the order of 100 GPa [5], and thermal conductivity of up to 6000 W mK.
Due to the high percentage of CNT in the 2 and 2.5 wt % in CNT-Al nano-composite clustering of CNT is much, which could affect the mechanical and the tribological property of the material, because the quality of the dispersion is the major factor which determines the enhance and desired property of the nano-composite.
Tian, H. liu: Tribological properties of short fiber C/SiC Brake materials and 30CrSiMoVA mate.
Boran: Fabrication and properties of dispersed carbon nanotube– aluminum composites.

The effect of vibration on the microstructure and mechanical properties of high-density polyethylene (HDPE) sheets, obtained through vibration plasticating extruder in low temperature, were studied systematically. 
In this work, an attempt is made to enhance the HDPE properties by vibration plasticating extrusion (VPE) process.
We has prepared HDPE sheets using EMDP extruder, and studied vibration force field effect on the microcosmic structure and mechanical properties of the samples.
So the VPE samples have a wider melting range than that of the CSE sample, and these small imperfect crystals are of great benefit to the mechanical properties of the extrudate.
So the vibration could affect the crystallization behavior of polymer.

The thermal properties of these materials were conducted by TG, and thermokinetic models and equations in process of pyrolysis were established by Doyle calculation.
Owing to its natural properties including water sorption and adsorption and abound in organic constitution, wood is subjected to instability in dimension, easy attack by insect and microbe, and high combustion ability [1].
H2SiF6 and SiCl4 have excellent properties of decay resistance compared to these samples with untreated controls [2].
In the function= (1- ) n, n reflects the reaction series and is key factor that affect the model.
Fig.1 exhibits above mentioned four stages clearly and fully, whereas, the obvious different between these curves, which is the reflection of the natural properties especially the flammability.