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The durability of structures is affected, but the structure will not collapse.
Fatigue damage is a fading process of the mechanical behavior of structural material.
The Parameters and damage factor of side column KZ1 in the third floor under repeated blasting vibration are shown in Table 3 [9], the damage factors of other components can also be obtained by the same method.
The aim of modal analysis is to determine the vibration properties such as mode and natural frequency, which are important parameters for structure design under dynamic loadings.
The damage factors of beams, columns and the overall structure under different times of blasting vibration is illustrated in Fig.3.

The paper comments on the influence of various technological factors influencing the values of elastic modulus.
Characteristic Properties of Concrete The properties of hardened concretes can be divided into four groups based on their mutual features [5]: Mechanical – Concrete compressive strength, flexural strength and shear strength.
Mechanical properties of concrete represent the relation between the mechanical stress and resistance by which the material resists these influences of such stress.
The most significant mechanical properties of concrete are its strength and resistance against deformation [6].
If concrete is influenced only by mechanical stress, the mechanical properties of concrete are described as deformable properties or as strength properties that depend on the behavioural characteristics of the material, thus, if the material keeps its compactness or if it is in the process of failure.

It was concluded Taguchi forecast is true about optimized mix levels. 1- Introduction Mechanical properties of HSC depends on type and amount of cementitious material, characteristics of fine and coarse aggregate, water to cementitious material ratio and curing condition.
The usage amount of cementitious materials is related to physical and chemical properties of these powders which affect on the performance of fresh and hardened concrete.
Westerhom et al. [5] showed the properties and amount of fine aggregate are main parameters in the water demand and workability of mortar.
Also, each of factors had 3 levels.
A Taguchi approach for investigation of some physical properties of concrete produced from mineral admixture.

Referring to the effects on properties of corn starch films, the most important factor was the glycerol concentration, the following factors were the pH value of the coating liquid, the CMC-Na concentration and the corn starch concentration.
During the last few years, biodegradable polymers with suitable mechanical and physical properties have received particular attention to replace petroleum-based plastics [6,7].
Testing corn starch film properties.
Comprehensive properties of the film were estimated.
In the best condition A1B1C2D3, the most important factor which affected the properties of the film was the glycerol concentration, the following factors were the pH value of the coating liquid, the CMC-Na concentration and the corn starch concentration.

The main factors that affect the fatigue properties of prestressed concrete test beams were fully discussed.
Material Properties.
The HRBF500 steel bars used in the specimens were tested in the laboratory and their mechanical properties were shown in Tab. 2.
The main factors affecting the deflection increase are discussed as follows: (1) Fatigue loading cycles N The deflection increased continuously as the number of fatigue cycles N increased.
(5) The initial tensile reinforcement stress produced by the maximum fatigue load, stress range, prestress degree, and steel ratio were the main factors that affected the fatigue properties of partially prestressed concrete beams.

Sarath Menon1,b 1Naval Postgraduate School Department of Mechanical and Aerospace Engineering 700 Dyer Road Monterey, California 93943 • USA a tmcnelley@nps.edu , b skmeno1@nps.edu Keywords: Friction stir processing, Homogenization, Microstructure refinement, Mechanical properties, Superplasticity Abstract.
In this paper further background on FSP will be summarized and the potential for microstructure homogenization and grain refinement leading to improved mechanical and physical properties in these cast metals will be outlined.
Details of the material and its composition and mechanical properties under conventional processing conditions have been reported previously [13,15].
These data highlight the beneficial effect of FSP on SZ properties: ultimate and yield strengths are increased by 2× while ductility in increased 3×.
Summary FSP provides a method to achieve localized control and modification of microstructures and properties of cast metals.

The major factors which affect the SLS are laser power, scan speed, layer thickness and spot width.
The entire laser sintering process is based on the property of absorptivity.
The factors which affect the absorption of heat energy are the wavelength of the laser beam, the powder material, homogeneity in the particle size, density of the powder, constituent of the powder.
The properties such as evaporation & radiation are neglected during the modelling hence in the future all the factors has to be considered to get a real time study results.
Yasa: part and material properties in selective laser melting of metals. 16th International Symposium on Electro Machining

Results and discussion The PG operation characteristics are known to depend on two factors: the nature, properties, and the colloid structure of the thickener selected as the dispersion phase for the PG; and on the antifriction and physicomechanical properties of the LM used as the PG base [3, 9–11].
That is why these factors govern the selection of the components of the new PGs.
Any change in the composition of the saponified higher fatty acids or fats affects the properties of solid oils [3, 11].
The effect of the process factors on the PG physico-mechanical properties was explored as show in Table 2.
It is necessary to take into account the tie water concentration in the hydrated calcium greases because it affects significantly the physico-mechanical and structural properties.

Because a laser pulse is the basic unit of the laser micro machining and its specific physical surface structure is one factor of the formation of concave-convex structure, it is necessary to extract the surface of the single pulse to study.
The spot coincidence degree can influence the machined surface roughness and the mechanical properties, thus it is one of the important technical parameters of laser micro milling.
A contour line passing through the center as the research object, as shown in Fig 7, a single pit is composed of two parts, respectively the heat affected zone and the molten pool, where the line2 is the basic plane of the material.
Since the depth D and the height H are the main factors causing the physical and mechanical properties change of roughness and change the material, and the molten pool width W is the main parameter of the micro drilling, the three parameters and the corresponding symbols can be used to describe the single pit model.
The statistical probability of the melt part is 0.7296, which affects the structure of the roughness.

Factors such as mineralogical composition, admixtures, water/binder ratio and solid particle size distribution will affect the rheological properties of injection grouts [10, 15, 16].
During the grouting process, the particles in the grout tend to settle gradually thereby affecting the stability of the grout.
The mechanical properties of injection grouts are related to reinforcement effect of grouting intervention in stone masonry walls.
Perraki, Effect of synthesis parameters on the mechanical properties of fly ash-based geopolymers, Colloids Surf., A 301 (2007) 246-254
Williams, Influence of calcium compounds on the mechanical properties of fly ash geopolymer pastes, , J.