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Researches on the volumetric changes and mechanical properties of concrete containing fly ash [9,10,11,12,13] or expansive admixture [14,15,16] are extensive and microstructure of concrete containing one or two of these admixtures were well studied.
The fresh properties of the concrete mixture are tested according to the Chinese standard.
"Assessment of the durability of concrete from its permeation properties: a review."
"Properties of high-strength concrete using a fine fly ash."
"Strength and shrinkage properties of mortar containing a nonstandard high-calcium fly ash."

Most of all the bridges are the concrete continuous box girder with long cantilevers and variable section, because of the material properties and the level of technology continues to progress.
More than 90% of the bearing capacity to resist the weight of the beam, and its technical and economic benefits are affected
The solid finite element model considers the vehicle impact factor, impact factors is 0.3 in the solid element.
Mechanical Behavior Analysis and Design Experience of Low-pylon Cable-stayed Bridge[J].
Analysis of mechanical Behavior of an Extradosed Bridge with diagonal Bracings Arranged [J].Bridge Construction，2013，43（2）：51-57.

In the analyses the socketed depth of piles, the properties of soil and rock mass, the scale, space position and filling situation of the Karst caves and the features of the contact interfaces between piles and soil and rock mass were taken into account.
To the working mechanisms of the rock socketed piles, some theories and principles were put forward [6~12], within them it is generally accepted that the characteristics form the load-transfer to failure of the rock socketed piles are related mainly with the ratio of length to diameter of the pile, the depth and the property of the Karst overburden, the rock properties of socketed section, the socketed depth into rock, the piling technology, etc.
The physical and mechanical parameters of the earth/rock in the numerical model are come from the survey report, using rational reduced average values.
The design of the pier foundation of the Super Big Chaogou Bridge is safety, and the safety factor is larger than 2. 2.
Analysis on the Parameters to Affect Behavior of Rock Socketed Segment of Piles.

This is one of the most determining factors of the tool or equipment’s longevity.
The physical behaviour of the material i.e. anisotropic material and isotropic material is a factor affecting the engineering structure.
Materials which have same physical, mechanical, and electrical properties in all the directions are called Isotropic material and on the other hand if they have different properties in different directions then these types of materials are called anisotropic material.
It is concluded that there is very little impact of the above factors on stress.
The authors concluded that cylinder properties approach the properties of a metal base (it has a smaller modulus of elasticity) and radial strain changes from positive values to negative values and tangential strain increases in the positive direction as the value of n increases.

Raof1,2,d 1Department of Mechanical & Materials Engineering, Faculty of Engineering and Built Environment, University Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia 2 Department of Manufacturing and Materials, Faculty of Engineering, International Islamic UniversityMalaysia, P.O.Box 10, 50728 Kuala Lumpur, Malaysia am_7sky1685@yahoo.com, bjaharah@eng.ukm.my, cchase@eng.ukm.my, dtasha0812@gmail.com *Corresponding author.
In the area of tribology, surface roughness has become one of the most important factors that contributed to the evaluation of part quality during machining operation.
The superior of specific properties such as high resistance to creep, high toughness and strength at elevated temperature, and good resistance to chemical degradation and wear have made this alloy well suited for service in extreme environments especially for high temperature application.
However, its small thermal conductivity and specific heat volume lead to high cutting temperature and its superior mechanical properties also have result to high cutting force.
It is claimed that in cutting superalloys material, due to their low thermal conductivity combined to a high chemical reactivity and adhesion with tool materials [5], temperature at the tool tip area seriously increases, and drastically affects tool wear [6, 7].

The seismic performance of reinforced concrete(RC) columns is one of the controlling factors of the shock resistance for RC frame structures and bridges under seismic loads.
Due to the complicated material behavior and complex external force during the earthquake, an accurate simulation of the mechanical performance under seismic loads demands more precisions for the hysteresis constitutive laws of materials.
Introduction Reinforced concrete (RC) columns, which are the important supporting member of bridges and reinforced concrete frame structures, will be repeatedly affected under the horizontal seismic forces of earthquake excitation.
In severe cases,the structure could lose its functions, or even collapse,and cause heavy losses of lives and property.

It is unclear how the presence of these contaminants directly affects the properties of Ti, but there is ample circumstantial evidence that suggests that by-products of these contaminants can cause porosity during consolidation.
Small volume fractions (<1-2%) of microscopic (less than a few mm in diameter) pores do not seem to affect tensile properties of Ti alloys because they are quite ductile, but these same pores can act as fatigue crack initiation sites during cyclic loading.
The basic mechanical properties of the materials consolidated by several of the methods mentioned earlier are acceptable, albeit typically higher in strength with somewhat lower, but acceptable ductility.
Some of these factors are related to market size and cost, but these factors are every bit as important to the acceptance of new production methods as the technology itself.
Clearly this situation will be more readily achieved for static than for dynamic properties.

It is influenced by all kinds of factors as electricity, heat and machinery and surrounding environment, so it makes the performance degradation gradually, and lead to fault finally[1].
There are both slowly faults, mutational faults, and electrical faults and mechanical faults. at the same time there both linear system faults and a nonlinear system faults.
The Principles of Fault Diagnosis on Motor Devices The operation of motor devices is influenced by many factors, as the network voltage, load properties, installation environment and the quality of the product and so on.
It is effective for mechanical damage diagnosis particularly.
Motor fault diagnosis technology, Mechanical Industry press, Beijing, 1995

The efficiency of the fan has been shown to be majorly affected by dust build-up [5], noted that an adverse dust build up on the blade could affect the speed of the fan and even cause the blade to wobble as well as cause the fan’s motor to heat up, thus resulting in more power being drawn for operations as well as pose safety challenges.
The conversion of electrical energy into mechanical energy in ceiling fan is done by an electric motor [3].
The design involves mechanical and electrical analysis.
The choice of Pugh Matrix Method was based on its simplicity and various determining factors of the concepts.
Determination of the physical properties of the cleaners and accessories Due to the geometrical properties of the fan blades, the cleaner, and holders would be made bigger (in width, thickness) in dimensions to ensure effective sliding.

Traditional ejection seat separation control system is a kind of mechanical height-time single control organ, because the time interval spanning from the seat ejection to the shoot and lifesaving parachute is fixed.
The polymorphic program controller was developed in the sixties abroad, and in the seventies, electronic programmable device with higher development property was began and researched significantly in the US and UK and other countries with the rapid development of electronic technology, recently, electronic adaptive program controller with more advanced technology.
The Advantages of Electronic Program Controller Compared with the mechanical program controller, the electronic program controller has the following advantages: (1)small size, light weight, high precision of time delay
And the defect is that it is easily affected by external factors.
Multiple factor input, multifunctional output and adaptive control technology requirements, makes the program controller move from the fixed delay to variable time delay, develop from single time delay functional to multi-functional and intelligent direction, change from mechanical to electronic direction, and the electronic way is an inevitable trend in the development of programmable device.