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The effect of graphite content on the electrical properties of the piezoelectric composites was investigated.
The piezoelectric constant d33 of the composites is affected obviously by the graphite.
The dependence of electromechanical coupling coefficient Kp and the mechanical quality factor Qm of the composites with graphite content are shown in Fig.6.The maximum value of Kp, 0.288, was obtained when graphite content was 0.6 wt %.
The results suggest that the coupling effect between mechanical energy and electric energy strengthen because of the increase of poling properties with a small amount of graphite, but excess graphite make it difficult to pole composites and Kp value decrease.
As seen in Fig.6, the mechanical quality factor Qm increased monotonously from19 to 23.

The concern on the stiffening affecting elastic properties as seen in the previous studies[[] Manroshan, S., & Baharin, A. (2005).
Effect of nanosized calcium carbonate on the mechanical properties of latex films.
The effect of different levels of filler loading on mechanical properties of the NRL films were examined.
The film samples were subjected for mechanical properties measurement.
Evaluation of Some Mechanical Properties of Composites of Natural Rubber with Egg Shell and Rice Husk.

Multi-rope hoist is a very complex system, a lot of factors affect rope tension, so it's difficult to collect all factors accurately and make quantitative measurements.
Wire rope is an important part of hoist system, many factors affect it, but there are five main factors that cause rope tension imbalance [6]: (1) Differences in the diameter of each drum groove. (2)Differences in the length of wire rope
After analyzing deeply the main factors which affect rope tension imbalance, we assume that mines in practical production only can adjust the diameter of drum groove and the length of wire rope.
And these two factors are also the direct causes which contribute to rope tension imbalance.
We can see from table 1 that, when we use this article method, we can get groove diameter properties, which provide a reliable basis for turning groove accurately and eliminating tension imbalance exhaustively.

Therefore, study of the dynamic mechanical properties of CA mortar, i.e. the effect of strain-rate on mechanical indexes) is urgently needed.
Consequently, study the dynamic mechanical properties of type II CA mortar is very important.
Currently, the dynamic mechanical properties study of CA mortar is not understand completely.
So the validity of SHPB experiment research on dynamic mechanical properties of CA mortar must be analyzed.
And the dynamic mechanical properties of CA mortar in different strain-rate were analyzed.

New Trends and Technologies in Thin-Slab Direct Rolling: Improved Microstructure & Mechanical Behavior C.
To obtain optimum strength and toughness property combinations in a direct rolling process, hot rolling has to compact the dendritic as-cast microstructure and to achieve a fine-grained microstructure.
Introduction Typical features of the CSP® process are homogeneous structural and mechanical properties all along the strip.
This influence has been quantified considering the evolution of the multiplying factor affecting t0.5, this factor being equal to unity for plain C-Mn steels.
Above equations clearly show that, for a given chemical composition, the time, the temperature and the applied strain level are the main factors controlling the degree of recrystallization between subsequent passes as well as the occurrence of precipitation.

In extrusion process, the temperature, pressure, and flow channel structure are important factors of the propellant quality.
Compared inlet pressure of Fig.4 (a) with Fig.4 (b) and Fig.4(c), the inlet pressure field distribution changes much earlier in x axis and y axis, it is caused by large compression ratio.Fig.5 (a) shows that, the obvious pressure variation appears at the entrance of the fluid, which is unfavorable to stable extrusion of fluid and will affect the density and mechanical properties of propellant.
In the production process, all the factors must be considered.
Adjusting mold purposefully, tuning other parameters and optimizing process ensure propellant properties and dimensional stability.
[3] Qing-wen Wu,Research on the Rheological Properties of Sing-base Propellant Containing HMX and EC[dissertation]: TaiYan,North University of China,2010(in Chinese) [4] He-sheng LIU, Zhi-gang TU, Yan-ping SUN etc.

One of the factors determining the possible applications of Zn-Al-Cu alloys is their resistance to electrochemical corrosion.
The addition of aluminum increases the castability, reduces the grain size and improves the mechanical properties of the alloy [1-5].
Adding copper improves the mechanical and tribological properties, increases the tendency to spontaneously age and increases the density [5,6].
Due to their tribological properties, these alloys are used as an alternative material for bronze and aluminum alloys.
Monoeutectoid zinc alloys are characterized by higher mechanical strength and wear resistance than the eutectic and eutectoid alloys in both the as-cast and heat treated conditions [8].

The stress effect is affected by the coal pillar size and the properties of the coal pillar and surrounding rocks.
These factors may cause the variation of the stress concentration, which could cause the difference in the stress distribution on the bottom seam.
(2) The critical width of protection pillar in Fucheng mine The plastic zone width of the coal pillar is affected by the thickness of coal seam mining, mining depth, mining-induced stress increased coefficient, the internal friction angle of the coal pillar, cohesion and support resistance and other factors.
(I) Theoretical calculation of the coal pillar size According to the measured physical and mechanical properties of Fucheng mine’s each seam, we can calculated the theoretical coal pillar size calculation of Fucheng mine by using the formula (4),see the Tab.1.
And considering the safety factors, the protective coal pillar size of No.1 coal roadway is 8m.

This result suggests that other electronic or structure factors can influence on metal-hydrogen interaction and structural stability of transition metal hydrides.
The obtained results have shown that both magnetism and structural defects can play a key role in hydrogen sorption properties of palladium based alloys and can strongly affect the hydrogen-metal interaction.
The magnetic properties of alloys were studied in the framework of spin-polarized calculations.
The cell volume relaxations have been also applied, since the formation of metal-hydrogen-vacancy defect complex induced a large lattice strain, which can affect the electronic and structural properties of the alloys [2].
Our preliminary results have shown also that magnetism can strongly affect the metal-hydrogen interaction and the binding properties of hydrogen induced defect complexes. 4.

Recently, graphene (the two-dimensional version of graphite), a material with special properties, is becoming increasingly used in various practical applications.
Due to the resistance to chemical factors and mechanical actions, as well as due to the finishing qualities, polyurethane paints are successfully used for: metal structures, exterior surfaces of tanks, bridges, transport equipment, wagons, tanks, agricultural and construction machinery and equipment.
Due to its high corrosion resistance properties, the material is used in welded structures for the nuclear field, boiler production, in applications in the marine environment (boat production), road signs, etc.
The preparation can be done by different mechanical or chemical processes (cleaning of oxides, greases or other impurities that can affect the quality of the surface after painting).
H.: Covalently-grafted graphene oxide nanosheets to improve barrier and corrosion protection properties of polyurethane coatings, Carbon 93 (2015) 555–573 [5] Trupti N.