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Through the mechanical properties experiments and analyses of ordinary marine concrete and marine concrete with fly ash added, it was thought that the proper content of SAP added could release free water for cement particles to continue hydrating during the curing stage, guarantee adequate water.
Fig. 1 Water absorption and release demonstration of SAP Compared with concrete of land, marine concrete which was used in sea water environment would suffer from the stress of mechanics, frost, wind, seawater and other natural factors, it was easy to fail.
Experiments of appropriate content of SAP added of marine concrete 2.1 Mechanical performance experiments of ordinary marine concrete First, the amount of cement was set at 360kg/m3, sand rate was 37%.
When pore water was drained, the relative humidity of internal cement slurry would be changed, thus affecting the continuation of cement hydration directly.
So, fly ash added would affect the strength development when SAP added, leading to the appropriate content of SAP were different from ordinary marine concrete.

The grain refinement of the primary crystal α makes it changes from coarse columnar dendritic structure to fine equiaxed structure, the mechanical properties of the alloy greatly improved.
However, the temperature when the Al-Si alloy works is often still far from the eutectic point temperature, as this point, microstructure and mechanical properties of the alloy are changed, it is we need to know.
According to F distribution table F0.05(4,4)=6.39, F0.1(4,4)=4.11, when F> F0.05, F> F0.1,that is significant factors.
And the insoluble phase in the alloy grain boundaries and intragranular dissolve more fully, components are more uniform, the mechanical properties the better.
Solid solution is at low temperature, diffusion driving force is small, atomics diffusion is limited, so distribution of alloy elements is uneven, the alloy grain boundaries and intragranular the more insoluble phase residue, have fragmented the role of the matrix, affect mechanical properties.

The results showed that the cement-sand ratio was the most important influence factors on compressive strength and those factors have similar influence.
Experiment results were analyzed using variance analysis and found out the most important factors of affecting the filling compressive strength.
In Chinese ].According to the number of test factors and levels, the experiment choose orthogonal table L9 (34).
Factors and levels are shown in Table 1.
The network is trained by the LM algorithm until it is convergent ,then the optimal solution or approximate optimal solution can be searched.GA-BP has the properties of fast convergence, good stability and top-grade network training results ,these properties are needed in researching and building prediction method with properties of rapid constringency speed, good stability solution and good performance optimization[[] Guolei Ya, Jiahe Zheng, Yangzi Yan, et al: Mechanical Systems and Signal Processing.

In order to verify the possibility to prepare heat insulator from the solid NR, many factors such as effect of blowing agent on curing properties of the compounded rubber, types of vulcanization system, air bubble size would be mentioned in this paper.
Table 1 Formulations and properties of the compounded rubber.
Thus, mechanical properties such as tensile strength, compressive strength and elongation at break of the closed cell NR are necessary to investigate.
All mechanical properties and nature of the air bubble were found to be rather good among all NR formulations.
Zhanga, Study on microstructure and mechanical properties relationship of short fibers/rubber foam composites, Eur.

The results of the physical-mechanical and permeability properties of the functional textiles indicate a promising increase in abrasion resistance by at least 70%, although some other properties deteriorate.
This research was conducted as a preliminary investigation [8] to determine the most suitable shapes of 3D-printed polymers on textiles that provide adequate protection against impact without significantly affecting the useful properties of textiles, such as excessive weight, compromised flexibility, and deterioration of permeability properties.
Table 3 and Table 4 show the measured values of the physical mechanical properties of selected woven fabrics used as substrates for 3D printing.
The adhesion of 3D printed objects to textiles is influenced by many factors, of which the structure of the fabric is one of the most important.
The measured physical-mechanical properties and permeability of the functional fabrics showed that 3D printing of thermoplastic polymers on the fabric increased abrasion resistance, but compromised some other fabric properties.

Determination of the Mechanical Behavior.
Mondolfo: Aluminum Alloys, Structure and Properties, Butterworth and Co., London, (1976)
Person: Factors affecting the grain refinement of aluminum using titanium and boron additives , Metallurgical Translations B, (1976), p. 223-23 [7] A.I.O.
Zaid: Effect of some grain refiners on the mechanical properties of aluminum (Proc. 7th International symposium on advanced materials, 2001), p. 63-67
Chakkingal: Flow properties of commercial purity aluminum processed by equal channel angular pressing Material Science and Engineering A Vol. 487(2007)

The temperature is a key factor that affects the metal deformation and the material property in the rolling process.
Therefore, the numerical simulation of the rolling process should take the temperature factors into consideration to improve the prediction accuracy.
However, the mechanical parameters are difficult to achieve the required accuracy if the impact of temperature on the rolling process does not be taken into consideration.
For hot rolling process, temperature is one of the most important factors that affect the metal deformation resistance.
Cavaliere et al. [3] develop the coupling between the purely mechanical model of the work-piece and the thermo-mechanical model of the rolls.

Resonant electromagnetic high-voltage transformers have an electrical QE factor of 20 to 30 whereas the equivalent for the piezoelectric transformer is its mechanical quality factor QM, which exceeds 2000.
Impedance Spectroscopy (IS) proves to be an efficient method capable to detect contribution of grains and the grain-boundaries resistance to the complex impedance of the PZT compound; it properly estimates its electrical conductivity as well as corresponding activation energies and concludes on structural properties [11-13].
Finally IS is shown to be an important method for detecting the proper amount of isovalent Ca-dopant in PBZT ceramics due to change in electrical properties.
Calcium dopants are located in the Pb vacancies, due to ionic radii similarity, and the resulting decrease in the amount of point defects affects the conductivity [14].
Results and discussion Mechanical quality testing.

The overview of properties will be provided.
The importance of energy is further weighted by several political and economic factors.
[5] Auerkari, P., Mechanical and physical properties of engineering alumina ceramics.
[6] Zheng, M., et al., Microstructure and mechanical properties of Aluminum Borate whisker-reinforced Magnesium matrix composites.
Pearson, Factors affecting the grain-refinement of aluminum using titanium and boron additives.

However, such broader applications of the monolithic TiB2 are inhibited by factors like high sintering temperature and poor toughness.
The B:M ratio affects both the electronic structure and properties.
Besides the above factors, the densification of TiB2 also depends on the purity of the starting powders.
Table 2 summarizes processing conditions, density and mechanical properties of the TiB2 ceramics.
It was also demonstrated that MoSi2 addition does not degrade mechanical, wear and oxidation properties.