Search results

The mechanical property had the relationship with spatial arrangement of soil grains, mineral component and occurrence condition of diffluent salt.
The soil microstructure was an important factor to engineering characteristics.
The results showed that diffluent salt recrystallization affected soil internal structure.
The salty soil microstructure character was different before and after dehydrating, which changed the soil- mechanical property of salty soil.
At present, many scholars made soil test on mechanical property of salty soil by changing moisture and salt content[2] [3], less by microscope units transformation.

Theoretical applications are made to estimate the SEA coupling loss factors between two subsystems connected by two rigid points.
In standard SEA calculations, however, only the statistical properties of the coupling stiffness terms are required.
The coupling loss factors between subsystems and can thus be predicted in a simple manner.
Eq. (10) has been used to predict the SEA coupling loss factors between two thin plates connected via two rigid points.
A simple expression on estimating the SEA coupling loss factors between the two SEA subsystems is deduced.

Its running life is one of the main factors to influence the reliability [1].
Then the material is one of key factors to cause the above phenomenon for water lubrication bearings.
But plastic material exist some defects such as poor heat-resisting performance，water swelling performance，vulnerable to aging，mechanical properties and the size stability effected by temperature obviously.
Conclusions The material properties is in a large difference because of different working medium in thousands ways for water lubricating bearings.
Mechanical design.

But, it is necessary to understand that the simulation is based on idealization and averaging the physical and mechanical properties of the medium under study.
However real rock massive is heterogeneous and anisotropic, it has heterogeneity on physical and mechanical properties in different directions.
Hydrodynamic factors also have great significance.
That approach is confirmed by soil properties analysis: variation of properties doesn’t exceed 10-15% in one unit.
Furthermore there is influence of heterogeneity, caused by difference in physical and mechanical properties of soils.

At the same time, the sheets are affected by the thickness ratio, different properties, the weld-line movement among forming process parameters and often appear wrinkle, crack and rebound during the stamping process of the TWBs.
Therefore, the analysis of the part used in TWB forming properties has good representation.
There are some factors including wrinkle, crack and weld are the key to reduce forming property of TWBs.
L16 (45) orthogonal table can arrange five factors which the last two factors have not been arranged.
Evaluation of the mechanical properties of weld metal in tailored steel sheet by CO2 laser.

The results of the calibration showed few dispersed errors, and the main factors of this dispersion may be related to the geometry of the specimen and with variations in current flow density, which is influenced by corners and edges and by the presence of pick-up inductive.
When an alternating current flows through a metal conductor, the current is maintained at a thin surface thickness, which depends on the frequency, f, and the physical properties of the conductor.
Some factors are essential in the success of the ACPD measurement, among which may be the correct positioning of the signal reading cables, appropriate current and frequency parameters, sample geometry and temperature variations.
Therefore, the application of the technique is totally dependent of a precise calibration, relating the measured output voltage to the crack length, the output voltage response being totally dependent on the sample geometry, the positioning of the wires and other external factors, such as temperature.
The tunneling effect ends up affecting the crack length measured by the ACPD equipment, presenting mean values below the actual size.

Abstract.Wind power is an important source of green power.The equipment, generators, and power systems are all determining factors of equipment efficiency.
Cogging torque is a major issue affecting generator efficiency.
Excessive cogging torque creates difficulties in starting the generator or jerkiness during operation, which directly influences the mechanical and electrical properties of the generator.
Their manufacturing methods and properties also vary considerably, as shown in Table 1.
Silicon steel has unique applications and superior electromagnetic properties that are essential in industries involving electric power, telecommunications, and measurement instruments.

The size, thickness and the physical and mechanical properties of the top stratum are considered.
The physical and mechanical properties of the imperious layer are changed by the different contents.
Series 3 (five experiments) is designed to investigation the effects of physical and mechanical properties of soil at the weak zone.
Series 2.The physical and mechanical properties of the top stratum at the weak zone of Series 2 are the same as that of Series 1.
Series 3.Series 3 is designed to investigation how the physical and mechanical properties of the top stratum at the weak zone affect on the failure law.

The moisture absorption mechanism differs in varied conditions of heat and humidity, and temperature is an important factor affecting composites hygroscopic property.
Introduction Reinforced Carbon fiber resin matrix composites enjoy properties of light weight, high strength, corrosion resistance and controllable anisotropy [1], which are in line with the light trend for parts in aerospace, auto and sporting goods industry, so it has been widely applied in these fields [2].
Though moisture absorption affects longitudinal mechanics performance slightly in unidirectional composite, affects performances on compressive strength and inter-level shear strength seriously [4].
It can also be seen from Table 2 that the balanced hygroscopic content of composite in CT & CH is higher than that in VT & CH, which indicates that temperature is the key factor to influence hygroscopic property while the water diffusion coefficient in VT & CH is far below that in CT & CH, which proves that temperature plays important role in affecting water diffusion in composites.
Mechanical, Surface and Interfacial Characterization of Pitch and PAN-based Carbon Fibers [J].

The result shows that the structural parameters can affect the natural frequency sensitivity.
Many factors lead to the internal vibration of rotor system, which include the impact of wind load from the outside world, changing in gear mesh stiffness and the axial movement due to installation error.
The effects of selected design parameters on wind helical gear shaft modal properties are reported on in a few papers.
Parker [6] characterizes the structural natural frequency and vibration mode properties of planetary gears.
Journal of Mechanical Design, Transactions of the ASME Vol. 117(1995), p. 242 [6] R.