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There are many rockburst factors, and by the mining process and mining, its leading factor was difficult to be determined during mining.
Energy theory, when the orebody-wall rock system Mechanical equilibrium has been broke, the releasing energy was greater than the consumed energy, the rockburst happed.
Impact tendentiousness theory, The theory holds that the rockburst was not only related to external conditions, but also was related to the physical properties of the coal and rock.
Three - factor theory, The theory is that rockburst occurred coal strata force the stick-slip process at the moment, It is a releasing kinetic energy process that coal seam and rock seam glided suddenly, Which concluded the three-factors mechanistic model[3,4].
Affected by the coal seam dip, Stress concentration area along the seam tilt direction was 10 meter to 30 meter because stable supporting strip was formed by mined above stage.

Experimental values of deflection δ thus allow estimating mechanical properties for the whole range of film thicknesses.
It was found that the main factor affecting the scale of such dependence is a deposition rate [13].
Nix, Mechanical properties of thin films, Metall.
Il’inskii, Mechanical properties of metallic films, Sov.
Zhu, Fundamentals of superior properties in bulk nanoSPD materials, Mater.

Abstract: The paper presents the effect of alloying with WC and TaC powders on structure and mechanical properties of the X40CrMoV5-1 steel surface layer using the HPDL (High Power Diode Laser).
Introduction Laser surface treatment techniques are widely used for improving the mechanical, tribological and chemical properties of metal parts.
Tool steels feature are widely used group of tool materials, especially interesting because of their low price and very good functional properties.
Big inters in these steels gives the basis for carrying out investigations focused on the improvement of the functional properties of these materials [8-13].
Gołombek, Properties of composite Ti/TiN layers produced by in situ method with high power diode laser, Bulletin of Welding Institute 1 (2013) 23-29 (in Polish)

Laser forming of open-cell aluminum foams can be modeled by means of 3D thermo-mechanical models but the correct evaluation of the alloy material properties is a key-factor for obtaining good predictions.
Experimental tests have been performed by compression and used to infer mechanical properties by means of a 3D FE model.
As a general conclusion, laser forming is able to produce large deformations of the foams without affecting their structural integrity.
The temperature-dependent material properties were partially extracted by references for elastic, yielding, and thermal properties.
Mechanical properties of foams are not uniform and it is also expected that they would change as an effect of the laser forming process.

The investigations show that the components fabricated by laser cladding process have better mechanical properties than that of the conventional manufacturing technology.
It is also aimed at understanding relations between the main laser cladding parameters and characteristics of cladding components and obtaining the superior properties.
We select the credibility more than 85 percent of the factors as important factors.
Three factors and three levels test was selected.
The results indicate that: the mechanical properties of components fabricated by laser cladding prototyping have been improved by the laser cladding rapid manufacturing.

Although there is a key relationship between combustion effects and law of property changes, the researches on influence factors of oil property changes after emulsification were few.
Therefore, for making sure watered fuel oil could play a better role in energy saving and emission reduction, this research has studied on the measurement of viscosity influence and effect factors of watered fuel oil, which could provide the theoretical basis and foundation for technology application of watered fuel oil.
A study of the influential factors of emulsified heavy-oil (EHO) viscosity.
Droplet surface properties and rheology of concentrated oil in water emulsions stabilized by heat-modified β-Lactoglobulin B[J].
Research on water droplet size influencing factors in watered fuel oil prepared by mechanical agitation[C].

The sandwich piezoelectric ultrasonic transducer is used in machining, aerospace, national defense, biomedicine, electronic equipment, etc. area with its excellent acoustic properties and physical characteristics of ultrasonic.
The chips belong to high-power emission, with good piezoelectric properties, stronger field of low dielectric loss and high mechanical strength and have good stability of the electrical parameters.
There are many factors affecting the bandwidth, one of those is the radiation diameter of the front end of the transducer, the size of the front end of radiation is larger, the more bandwidth.
Accordingly, the whole mechanical quality factor of the acoustic system in ultrasonic machining can achieve more than 1500.
But not the mechanical quality factor of transducer as high as possible, many factors must take into account at the same time.

Creep rupture data generally exhibits certain dispersity because of uncertainty factors in materials and experiment conditions.
Most design methods of rupture property are deterministic.
Reliability is used in electronic and mechanical domains.
As the rupture property is mainly the association of temperature, stress and rupture time, many parametric methods take some of these three factors into account and put the data in a band.
The safety is affected by dispersion degree of creep rupture data obviously.

This study reported the results of adding furfural on mechanical properties of Ordinary Iraqi cement.
The published researches in this field that the mineral additives or Portland material have a positive effect on mechanical properties of cement or concrete mixes.
Lamond ; "Factors Influencing concrete Workability", Significance of tests properties of concrete-making, American Society for Testing and Materials, STP 169C, Philadelphia, PA.;(1994)
Lamond ; "Factors Influencing concrete Workability", Significance of tests properties of concrete-making, American Society for Testing and Materials, STP 169C, Philadelphia, PA.;(1994)
Mehta ;" concrete Manual: Structure, properties, and Materials."

As the only process which allows changing shape and mechanical properties of the component at the same time, HCDF occupies an important position in manufacturing processes.
As it is well known that the flow stress and mechanical properties of the forging component may be significantly affected by changes in the strain rate, microstructure and temperature during the forming process.
Hence, as new materials continue to arise, it is necessary to investigate all mechanical and physical properties of them so as to estimate stresses, strains and strain rates during the forming process.
Precision forging technology can be defined as a series of measures, which affect improvement of one or more of the above mentioned factors, and due to that the quotient of the mass of the end-component and the mass of the forging component tending to zero while the machining allowance remains the same [1].
In addition, the mechanical properties could be improved if there is no convection while cooling.