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Introduction Magnesium and mg alloys have some advantageous properties that make it an excellent choice for a number of applications.
These properties make it valuable in a number of applications including automobile and computer parts, aerospace components, mobile phones, sporting goods, handheld tools and household equipment.
The factors of hydrolysis temperature, coating times, calcinations temperature and time were investigated in orthogonal experiment.
The level and factors is shown in the Table1.
However, its influence intensity is lightest in the factors.

This means that the evaluation of the structural behavior has to be approached through an assessment of the current condition of the structure and its history in term of material properties, construction techniques, structural details, crack pattern, damage map, and material decay [5].
The occurrence of decay is not isolated but almost always part of a more complex process that involves physical and chemical environmental factors, and the structure and design of the building also.
Structural Details of the Aghjots Monastic Complex The structural analyses of a new masonry building is a relatively simple task, however the assessment of the seismic vulnerability of an ancient masonry building is a challenging task, because of several uncertainties affecting the geometrical and the mechanical characteristics of the structural elements [6,7].
Also, it has been affected from time effects.
Mechanical damages in structures of Aghjots Monastery results when stone is subjected to a load or a stress that is above the mechanical resistance it has.

According to the material properties and operational research theory, the mathematical model of the optimal selection material of water lubricated rubber bearing is established.
The influence of material properties on the objective function is discussed..
The urgent need to carry out the research of the system including the development of the material, the mechanism of the vibration and sound mechanism and the influencing factors, and the measures of reducing vibration and noise[9].
By changing the proportion of each component, a series of composite rubber material with similar properties can be obtained[6].
The mechanical properties of water lubricated plastic alloy bearing material modified [J]. lubrication and sealing.2004 (6):80-82

The homogeneity of plasma surface modification of large-area thin film materials has always been paid close attention, and it is also the key factor affecting the industrialized applications of the technique.
The presence of gas will affect the exchange efficiency of ion and molecular in nozzle area.
Conclusion The transport property of discharge gas under vacuum is investigated by adopting the combination of numerical simulation of fluid distribution, pipe flow theory and Fluent simulation design.
Alkali Absorption Property of Polypropylene Non-woven Fabrics Surface Modified by Hollow Cathode Remote Plasma Polymerization [J].
Materials for Mechanical Engineering, 2011, 35(8):70-74.

For example: military exercises, simulation training, courseware, mechanical process simulation and so on[1].
Modeling is good or bad directly affecting the creative process.
Create a model mainly to follow the assessment factors: the degree of similarity with the physical, the speed of rendering, the size of model file.
Whenever you change the properties of the geometry parameters, the shape changes can be implemented to meet the needs of making model.
Fig.4 shows a standard primitive and Boolean operation modeling Fig.4 The Standard Primitives and Boolean Operations Ⅱ.Spline and Lathe command Graphics and spline are made of the round, rectangular, star and text and straight lines, curves, spirals, although they are two-dimensional graphics, but you can modify the parameters in the object properties so that they can be rendered, or by turn three -dimensional command so that they can render.

The road surface was assumed to be random, stationary, Gaussian and centered function i.e. all its statistical properties did not vary with any change of the argument time t, the law of distribution of variable X(t) was a Gaussian law, and the average of X(t) for any t, pertaining to [0, T], was null.
In this work, the numerical value of this factor was estimated to be 0.025 for a maximum force of 5056 N [5].
The field of high strain may affect the natural frequency of a mechanical part with change in shape and increase in the density of dislocations that can affect the rigidity of the structure which is again related to the eigen modes.
The field of the high strain significantly affects the natural frequency of the mechanical part.
The field of high strain can affect the natural frequency of a mechanical part and is influenced by change of shape and increase in the density of dislocations that can affect the rigidity of the structure which is in turn related to the eigen modes.

Study of Manufacture Process and Properties of Tailings and Slag Based Mine Filling Cementitious Materials ZHANG Jinxia1,a, LIU Shuxian1,b,XIE Jun2 1College of Mining Engineering, Hebei united university, Hebei Tangshan, 063009 2 No.2 Geological Brigade of Hebei Geology and Mineral Exploration Bureau, Hebei Tangshan, 063000 azhangjinxia163@163.com,b liushuxian1970@163.com Keywords: tailings;slag; cementitious materials; compressive strength Abstract: The tailings and slag based mine filling cementitious materials was prepared by sodium silicate and sodium hydroxide alkali-activated tailings and slag.
Therefore, in this experiment, iron tailings are pretreated by a physical treatment, chemical excitation and combination of both, in order to enhance the capacity of tailings iron in response and improve the mechanical properties of products.
Discussing the main factors on affecting the compressive strength of inorganic polymers, such as tailings mass fraction of total solid phase, doped volume of liquid sodium silicate, solid-liquid ratio, curing period and cement content of slag.
References [1]J.G.S. van Jaarsveld, The effect of metal contaminants on the formation and properties of waste-based geopolymers[J], Cement and Concrete Research,1999,(29):1189~1200 [2]Puyam S.Singh, Outstanding problems posed by nonpolymeric particulates in the synthesis of a well-structured geopolymeric materials[J], Cement and Concrete Research,2004,(34):1943~1947

The hexagonal metallic materials such as magnesium and titanium alloys, which have many advantages of low density, high specific strength, thermal properties, damping capacity, fatigue properties and machinability, provide great potential to reduce weight and replace the commonly used structural materials [1-3].
Hexagonal materials are generally characterized by highly anisotropic mechanical properties due to the pronounced texture that develops after deformation processing.
This is reasonable that the schmid factors for different deformation modes depend on the corresponding specific crystal orientation under the identical applied stress tensor.
The plate texture basically affects the subsequent production process and the resulting mechanical properties.
By comparison, increasing the friction coefficient is an efficient means for weakening the basal texture and improving the forming properties.

Introduction Titanium alloy has been widely applied in aeronautics & astronautics, boat & ship manufacture, and petrochemical industries due to its distinctive mechanical properties.
Experiment and Analysis on the Near-dry Deep-hole Drilling of Titanium Alloy The cutting tool life and the cutting force are the major factors affecting the machining accuracy and efficiency of titanium alloy, while the material, structure and geometry parameters of the cutting tool play the decisive roles in tool life and the cutting force.
Considering the major factors, we make an experiment plan as follows: (1) Select several kinds of cutter materials such as YG8, YW1, YD15, YT726, and YT798 etc. to drill the deep holes with same dimension and depth in titanium alloy.
From Table 2, we can see that the cutter with material YG8 has the best machining properties, the wear rates of which is lowest, the torque and axial force are smallest, and the surface finish of the hole drilled is best.
This is related to the properties of the material YG8.

During welding the joining parts are affected by heat and force, which cause inhomogeneous microstructure and mechanical properties, furthermore stress concentrator places can form.
In case of matching condition, the evolved mechanical properties of the weld are equal or nearly the same as the base material.
It is important to note that at matching condition, the equality of all mechanical properties can be hardly achieved.
The mechanical properties of the base and the filler materials.
The results of the measurement can be significantly affected by numerous factors.