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Therefore, many researchers improved the mechanical properties of magnesium alloys by heat treatment [4-5].
Therefore, it does not want to see that after heat treatment although its mechanical properties were improved but the damping performance was decreased at the same time.
Our previous studies show that adding Sb can obviously improve the microstructure and mechanical properties of ZA84 magnesium alloys.
All of these factors can affect the dislocation damping evidently.
All of these factors will affect the movable dislocation density and the mean loop length, thus affecting the damping properties of the alloys.

Appropriate pore size distribution achieved by admixture of convenient substances leads to higher salt and frost crystallization resistance and also positively affects materials water (salt solution) transport properties.
Ellipsoidal geometry is described by means of depolarization factors [7].
The three depolarization factors for any ellipsoid satisfy the equation
Černý, Influence of Finely Ground Brick on Hydric Properties of Lime Plasters, 4th European Conference of Mechanical Engineering, Paris, France, ISBN: 978-960-474-345-2, pp. 117 – 121, October 2013
Čáchová, Properties of plasters with content finely ground brick, Diploma thesis, CTU in Prague, Prague 2013

The development of mineral casting continues to achieve better mechanical properties.
The mechanical properties testing is the hardness test (surface) and bending (inside).
The type of material affects mechanical properties [15].
The influence of factors and levels on hardness and bending, the highest factors are the epoxy ratio and the ratio of silica-sand raw materials of volcanic sand.
Suggestions Based on the mechanical properties test data, the improvement still needs to be improved to better mechanical properties as required of the structure machine (static).

Compared with the other machining technology, the electrochemical machining technology has many advantages: Firstly, the machining range is wide, the electrochemical machining is out of the limit of the mechanical properties of processed material itself, and it can process all kinds of high strength, high hardness and high toughness metal material.
Influence factors on machining accuracy.
There are many factors affecting the electrochemical grinding accuracy on the surface of the work piece, such as the electrolyte system, the conductive area of cathode, the character of the material of work piece, mechanical factors and the loss of cathode tool [5].
Mechanical factors.
Secondly, passive film is the key factors in electrolytic grinding processing, which affect the surface quality and processing precision of work piece.

Introduction Usually the optimization of the mechanical properties, to achieve high strength, good toughness and weldability, is achieved by the production route of Thermomechanical Controlled Processing followed by accelerated cooling.
Since procedures such as welding and hot bending can involve temperatures up to the austenitization range, and thus affect the mechanical properties, the objective was to correlate the effect of different cooling rates on the microstructure and mechanical properties.
Mechanical properties were also evaluated by microhardness measurements and, at this stage in the study, the tensile strength values were estimated from the hardness Rockwell B hardness measurements.
Among the several factors that can contribute to an increase of strength in HSLA steels grain refinement [2 -5] probably represents the biggest contribution for the steels studied in this work.
Bhadeshia, Steels - Microstructure and Properties, Second Edition, Butterworth-Heinemann, 1995 [4] K.

Analysis of variance (ANOVA) and pareto diagram are used to determine the most significant milling parameters affecting the surface roughness.
Introduction The popularity of carbon fiber reinforced polymers (CFRP) in the aerospace industry has been increasing thanks to their desirable mechanical and physical properties [1].
Schulze [6] found that cutting edge rounding is an important factor which affects the cutting process both in milling and drilling.
Statistical analysis has been employed to check the significance of all the factors.
[2] El-Hofy M H, Soo S L, Aspinwall D K, et al, Factors affecting workpiece surface integrity in slotting of CFRP, J.

Some researchers studied the microstructure stability and mechanical property stability on PWA1484 and SC180[3,5].
The morphology, size and distribution of γ’ phase strongly affect on mechanical properties [3-6].
The shape, size and distribution of γ’ phase significantly affects on alloy mechanical properties.
However, γ’ phase has been coarsened significantly and exhibits irregular aging for 1500~2500h at 980℃ (Fig.3), as a result, the mechanical properties deteriorated rapidly respectively (Fig.2).
Under the factors of elastic and boundary energy, γ’ phase grows continuously larger and larger with [100] orientation.

Investigating the creep of lightweight arbolit concretes greatly affecting the performance of bearing and envelope structures draws a special attention during the last years.
While carrying out scientific research, the following standard measuring and analysis methods of physical and mechanical properties have been used for sulfur-containing arbolit composites.
Organic filling aggregate has demonstrated lower deformation property than the mortar fraction, in spite of matching up their deformation properties.
The study of structure formation and mechanical strength properties of sulfur-containing woodcrete composites exposed to permanently acting loads.
The dependency of the lightweight concrete strength on its properties and filling aggregates.

Although the gelatin has these advantages, but porous scaffolds have good mechanical properties, closer to the native cartilage tissue, so it is widely adopted.
The factors which used to regulating chondrogenesis include TGF superfamily, insulin-like growth factor and fibroblast growth factor (FcF).
A variety of factors can transfer and promote multiple stages of cell differentiation and tissue formation at the same time.
But the mechanical properties of collagen is low strength, and it lack of strength and toughness.
Stress distributions and material properties determined in articular cartilage from MRI-based finite strains.

Thus, the composite casing artificial accelerated aging test should increase the role of mechanical force factor, while the composite insulator aging research methods and conclusions should also increase the qualification when applied to silicone rubber composite casing.
These aging systems will directly affect the safe operation of, if not timely measures will bring very serious consequences.
(a) Transverse crack (b) Longitudinal crack Fig.1 Crack forms of silicone rubber composite coat Different cracks when subjected to the impact of external factors will appear different crack extension phenomenon.
（a）Radial crack （b）Axial crack （a）Radial crack （b）Axial crack Fig.5 Different form of crack stress nephogram Fig.6 Different form of crack displacement nephogram From Figures 5 and 6, it is evident that four vertices of the rectangle is force and large displacement takes place, which reminds us that when aging occurs silicone rubber composite casing cracks, the crack phenomenon easily crack extension, so we must make timely repair and replacement work, and lest silicone rubber sheath of glass steel pipe loss protection, lead to the electrical and mechanical properties of the severe decline in [7], serious power accident.
c)According to the ANSYS analysis results found that the edge of the crack can easily develop into deeper and more serious cracks when affected by the external environment, it must make a timely repair and replacement work, in order to avoid serious power accident.