Search results

There have many serious problems such as low precision of measurement, low degree of automation, compaction mechanism, sometimes consolidation time and high interference of human factors.
From the bottom figure.2, K21 is reflecting the uneven roadbed structure and properties of the distribution and figure.20 shows the high-quality of uniformity.
Figure.1The layout of uneven sub grade displacement Figure.2 Road bed stiffness uneven mechanical model Slab track model Due to stress a detailed analysis of track structure and properties of uneven roadbed structure performance under the train load to the track influence of various components.
Comprehensive uneven roadbed structure performance of static impact of ballast less track analysis results and the properties of roadbed structure uniformity degree of the hierarchy.
Continuous Compaction Control, CCC, Compaction soils, granular materials, modeling and Properties of compacted materials, Paris, 2000, 237-245

Air permeability is one of the thermal comfort properties of clothing and fabrics.
Air permeability of fabric is one of thermal comfort properties and related to other thermal comfort properties of moisture transmission [1].
Porosity is one of the significant factors affecting the air permeability of fabric, which was defined by the ‘ratio of void space to fiber in a given volume of the fabric [6].
This study aims to comparatively evaluate the cooling properties of four types of cooling towel products by analyzing the air permeability behavior.
The samples of Perfect Fitness showed the poorest cooling effect, whereas N-rit, Cooldyxm and Ice Towel samples had comparable air permeability properties.

More finger-like pores of the hybrid membranes were obtained after adding Ru nanocluster, and the thermal properties of the membranes increased while the mechanical properties decreased.
Thermal properties.
TGA spectra of PSF and PSF/ Ru hybrid hollow fiber membranes Mechanical properties.
These factors decreasing the mechanical properties of the hybrid membranes.
The thermal and mechanical properties were also changed, after adding Ru nanocluster, the thermal properties of the membranes increased while the mechanical properties decreased.

They produce a large number of wear particles which resulting in aseptic loosening and affecting the life of joint [3].
Friction factor.
The friction test was done in the ring-block friction and wear test machine, MHK-500, with the 40# lubrication, The friction factor was measured by LPDZ3 dynamic testing instrument and calibrated by the mechanical lever force-measuring device.
This experiment shows that the friction factor of nano-ZrO2 ceramic test block against GCr15 steel test ring, whose fiction factor is 0.084, is less 37.3% than that of 45 # steel block against GCr15 steel ring, whose fiction factor is 0.134, which indicates that the nano-ZrO2 ceramic has better tribological properties than 45 # steel.
Wear property.

Mechanical properties 2.2.3.
Factors that affect Polymer Nanocomposites Structure 4.1.
Other kinds of nanoparticulates may result in enhanced optical properties, dielectric properties or mechanical properties such as stiffness and strength.
Factors Affecting Polymer Nanocomposite Structure · Synthesis method (melt compounding, solvent blending, in-situ polymerization, emulsion polymerization etc)
The synthesis method and the factors affecting their properties have been discussed in detail.

Effects of Nitriding Processes on the Mechanical Properties of SACM 645 Steel Shu-Hung Yeh 1, a, Liu-Ho Chiu2, b, Heng Chang3, c 1,2, 40, Chung-Shan North Road, 3rd Sec., Chung-Shan District, Taipei City Taiwan 10451, R.
Therefore, various methods, such as ceramic coating and surface treatments, have been devised in order to improve the surface mechanical properties of the components [3].
Among those surface treatment processes, the nitriding methods have been used extensively to enhance the mechanical properties of steel components [3-6].
The aim of this work is to study the effects of two nitriding processes on the properties of the SACM 645 steel.
The factor of the substrate hardness on nitrided SACM 645 steel property is also investigated.

Many factors can influence the mechanical and biocompatibilitive properties of plasma sprayed HA coatings.
Recently nanostructued bio-coatings attracted intense attentions due to their enhanced properties.
So in this paper the HA coatings made from powders with different size (microsized and nanosized) were characterized and their influence on coating property was studied. 2.
The crystallinity is one important factor to effect the thermal spraying HA coating's bio-property, it can be calculated from the area ratio A/Ap as a relative method, where A is the area of crystalline peaks on the XRD spectrum and Ap is the area of the starting powder.
According to the equation above, factors affecting the melt ratio are Sc and Rrm.

The performance of solid expandable tubular threaded joint is affected by complicated factors such as material property change, large deformation of geometric dimension and residual stress.
The working characteristics of the solid expandable tubular threaded joint are extraordinarily complicated, involving geometric three-dimensional nonlinear deformation, nonlinear change of material property, contact nonlinearity, and high residual stress level on the connecting part after deformation.
In this paper, by taking the structure of expandable threaded joint designed by the author as an example and focusing on the working characteristics of the solid expandable tubular threaded joint during expansion, working characteristics of the solid expandable tubular threaded joint under the effect of multiple factors such as geometric three-dimensional nonlinear deformation, nonlinear change of material property, contact nonlinearity and residual stress are explored to lay a foundation for the design and development of the solid expandable tubular threaded joint.
These factors inevitably have effect on the joint strength of joints for the existence of hardening and residual stress.
With the comprehensive effect of these factors, the joint strength of joints after expansion falls slightly.

The mechanical properties are shown in Table 1.
However, the fatigue limit for two-step stress was not so much affected by the notch radius.
Fig.11 Effect of notch radius on fatigue limit Fig.10 Effect of notch depth on fatigue limit diagram Table 2 Mechanical properties of SCM435 used in fretting fatigue If this crack is subject to the second step stress (σa2) with high mean stress, this non-propagating crack acts as a pre-crack for σa2 and causes the crack growth, which leads to fracture.
The mechanical properties are shown in Table 2.
[3] Y.Kondo, Cause and effect of factors affecting the ∆Kth of small crack.

Laboratory testing of the physical and mechanical properties of rocks.
SDGT-LMO-19-140 The dominant material properties are soft to very soft, with the number of SPT "N" blows being less than 4.
Material Properties Data from Standard Penetration Test (SPT) in the research area.
The data used is derived from the physical and mechanical property tests, serving as input for slope stability analysis using software named Slide V 6.0.
Rock Mechanical Property Test Data.