Search results

Mechanical properties of concrete are highly influenced by its density.
The effect of disparate durations of high temperatures on the physical, mechanical and radiation properties of RSC must be investigated before construction.
"Evaluation of Radiation Shielding Properties for Concrete with Different Aggregate Granule Sizes."
Properties of Concrete.
Properties of Concrete. 4th.

Introduction Tourmaline is favored by environmental, health and other fields because of pyroelectric, piezoelectric, the nature of the spontaneous polarization with the release of negative ions, 4~14μm infrared emission and other properties [1].
Then the properties such as partical size and whiteness were analyzed and yield the best result when the stearic acid content of 8%as shown in Figure 2.5.
Fig.2.5 Influence of composite powder whiteness with content of stearic Fig.2.5 shows dosage of stearic acid is one of key factors to the whiteness of composite powder.
Fig.2.6 Influence of stearic acid to viscosity and whiteness of coated following changes of temperature Heated temperature is one of key factors to the whiteness of composite powder.
Porous tourmaline molded up to ionization properties [J].

The low misfit of lattice parameter between g’- and g - phases (typically < 0.4%) and the reduced interface energy (20- 30 mJ/m2) are the factors that induce the excellent stability of the (g + g’) microstructure and is the result of a strict control of the chemical composition and the production parameters.
Therefore damage may occur and accumulate during service, leading to progressive degradation of the mechanical properties.
The excellent high temperature structural stability and properties of Ni base superalloys are mainly due to their complex composition.
Sammy in “Nickel-Based Superalloys for Advanced Turbine Engines: Chemistry, Microstructure, and Properties”, University of Michigan, Ann Arbor, Michigan 48109, University of Cambridge, Cambridge, England CB2 3QZ, United Kingdom, 2006
Goiria, Development of laser welding of Ni based superalloys for aeronautic engine applications (experimental process and obtained properties), Phys.

Also, Johnson and Sukumaran [3] used a 3-D FE model to analyze the effects of wander and aircraft wheel configurations on the mechanical response of the pavement layers.
Many a factor is involved in, such as layer structure, material properties, soil moisture and temperature, and so on.
The FE results of the flexible pavement are seriously affected, as the variation of these factors is great.
The empirical and mechanical realization on the flexible pavement in the past research can be summarized as follows： (1)A small local part in the known surface curve of the pavement has the functional relationship with the point in the other three top pavement layers; (2)From start to final state, either the deflections of the pavement layers or their relationships are nonlinear.
The functional relation between the ith output variable and the input variables, and as well as the input parameters, and , can be stated as Eq. (1) (1) Where,and are three adjacent points in the surface curve of Layer P-401; is the ith point in the top curve of the layer P-209 under the pavement surface; is the parameter of the material property of the layer P-209; is the thickness parameter of the layer P-209.

Introduction The length to diameter ratio greater than 20 to 25 of the shaft are usually called slender shaft[1,6,10], screw and feed rod of lathe, for example, witch frequently used in machinery industry, prone to bend and vibrate affected by the factors such as cutting forces, clamp forces, cutting temperature, self weight.etc.
By this way, if the center pushes too tight, the shaft will be bent, the thermal extension will be hindered, thereby lead to the bending deformation affected by axisymmetric compression.
Static Analysis After building the 3D model, define the material properties, position constraint by restricting 6 degrees of freedom of X,Y,Z rotation and axial movingon on the Φ12mm cylindrical surface, restricting 4 degrees of freedom of X,Y rotation and axial moving on the surface of the other end.
Mechanical Engineering & Automation, (2005) No.3, p.97-98 [8] Q.L.
Pro/Engineer Wildfire 4.0/5.0 mechanical structure Analysis in Practice (China Machine Press, China 2011).

The requirements of machining accuracy and efficiency on super-alloy are increasingly high with the development of mechanical industry [2].
According to the mechanical properties and characteristics in the cutting process of tool material, tool geometric parameters are selected as follows: rake angle is 5°, back angle is 5° and tool edge radius is 0.01mm [6].
Thus the effect of single factor change on cutting force and temperature is analyzed through comparison and observation.
Analysis of Simulation Results The Affect Cutting Parameters Makes on the Cutting Temperature.
Cutting depth is the most influential factor of cutting force, and cutting speed is more influential than feed rate on cutting force.

By analyzing fatigue tests, the acceptable stress concentration factors and S-N curves are suggested to be used to account for the fatigue behavior of RC beams strengthened with FRP laminates.
The extensive application of FRP in practice leads to research efforts on the comprehension of the properties of the materials.
The key factors that affect the reliability of this approach include the location of critical stress, stress concentration factors and S-N curves of loaded members.
Stress concentration factors Tests Stress concentration factors 1.
Zhang: Fatigue Behavior and Design Principle of Concrete Structure, Mechanical industry press, China, 2006

In order to increase the ceiling height and does not affect the interior layout, take the original two columns of 9 / C-axis and 10 / C-axis truncated, in the two to three floor, about two-storey height (3.870m ~ 10.875 m range).
The mechanical properties of materials were homogeneous, and the mechanical properties of the materials in all directions were the same, so the materials were ideal elastoplasticity [1].
Comprehensive consideration of the existing situation and other field of various factors, the actual deformation was in 3.0 ~ 4.0 mm, stress ratio of chord and flank rod was not more than 0.6.
Fig.4 The vertical displacement of each node Conclusions The plane calculation model of H-beam steel transfer truss was established, on the basis of some basic assumptions, such as material properties and so on.

The mechanical properties of the spoke are listed in Table 1.
True stress and true plastic strain curve of A356-T6 aluminum Table 1 Mechanical properties of the spoke Mechanics Properties Yield Strength Tensile Strength Elongation at Break Young's Modulus 150 (Mpa) 255 (Mpa) 4% 66 (Gpa) Since the tire will absorb partial kinetic energy from the dropping striker during impact testing, the general practice is to deduct a certain percentage of the striker's kinetic energy to compensate for the exclusion of tire in the simulation.Before the striker contacts with the tire, the total kinetic energy of the striker is E = mgH (2) where m is the striker mass, H is the free-fall distance.
Simulation Results In this section, effects of mass scaling factor and impact location on overall wheel deformation will be discussed in sequence.
As expected, computation time can be dramatically reduced from 5 hours to 2 hours when the mass scaling factor is -8e-4.
Failure criterion is based on the equivalent plastic strain at break point that can be measured from a uniaxial tensile test in the lab. 2) Mass scaling method can dramatically reduce the computational time with little sacrifice of accuracy, which can accelerate the product design and development process. 3) The impact location will affect the plastic strain distribution and magnitude.

The thermal properties can be evaluated by various methods.
Applications include investigations of the physical properties of materials in concentrated sunlight, including spectral emissivity and absorptivity, mechanical properties, thermal expansion, conductivity and diffusivity, specific heat and others.
One of the factors that play an important role is the entropy of mixing between two polymers.
Main chain polyquinoxalines, [33] are representative class of materials, which combine the high electron affinity with high thermal and oxidative stability, outstanding mechanical properties and good film-forming ability [34].
The efficiency of sensitization depends on many factors, such as the form of aggregation and the presence of charged defects.