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Based on the engineering properties of red sandstone, especially hydraulic mechanical properties, red sandstone slopes are taken as examples.
Several examples of slopes reinforcement projects of Changji highway in Hunan province are taken for the analysis of red sandstone rock properties deeply.
Red sandstone’s Properties in West Hunan Geological Mineral Characteristics.
Zhihong Lin [6] considered that the infiltrating softening properties of red sandstone are controlled by the content of clay mineral content, especially the content of montmorillonite which has a hydrophilic property.
Fig. 2 X ray diffraction spectrum of red sandstone from Changji highway Fig. 3 Four red sandstone samples under polarizing microscope Macro-mechanisms of Landslides Due to the diversity and complexity of slope structure and influence factors, landslides types and mechanism are diverse and complex.

At the present, the studies of the nano-composite system mainly focus on the material preparation, mechanical property, toughening mechanism and microstructure, but the high temperature creep properties and superplastic forming are studied on minority system[1-3].
That demonstrates that the two interfaces of Al2O3-ZrO2(n) ceramics prepared by this experiment both have stronger contacts, which are useful for the improvement of mechanical properties.
According to the parameters of mechanical properties[9], when the nano-composite ceramics is effected on external force, the phase transition toughing effectively improves the mechanical properties of the materials.
The study shows that the size of ZrO2 crystal grain is one of the major factors which affect the t-m phase transition.
The improvement of the mechanical properties of Al2O3-ZrO2(n) composite ceramics results from nanometer grains toughening mechanism, ZrO2 phase transition toughing mechanism and intracrystalline structure together.

Introduction Planetary gear vibration and noise are key factors affecting system reliability, service life and operating environment.
This paper aims to propose a multi-body dynamic model of HGPT, with which the modal properties of an example system are predicted and compared with the simulation results from previous lumped-parameter model.
Modal property prediction In this section, modal properties of HPGT are predicted according the parameter listed in Table 1.
Chinese Journal of Mechanical Engineering, 2005, 41(7): 50-55
Journal of Mechanical design, 2002, 38(3): 6-9.

There are two major factors to consider in this analysis.
These materials give daily chemical products packing necessary mechanical properties, such as flexibility, barrier and sealing, but are less good for elasticity.
Through comprehensive consideration of three factors, making the material with plastic and elastic, adapting to industry production and improving environmental protection, we have selected TPE rubber, also known as Thermoplastic Elastomer / Thermoplastic Rubber.
These required properties include good appearance, soft touch, strong tinting, color uniformity, high insulation, non-toxicity, temperature resistance at -60℃ - 70℃, outstanding barrier, good corrosion resistance (such as to water, acid, alkali, and alcohol solvents), anti-ultraviolet radiation and antioxidant properties, and adjustable hardness.
TPE material can directly replace the traditional PE plastic without affecting production standards or the industry production chain.

The load-bearing skins of such structures are predominantly manufactured from polymer composite materials (PCM), which exhibit excellent mechanical properties, high corrosion resistance, and the ability to withstand substantial operational loads [3, 4, 5].
Although these defects can be mitigated through technological interventions during the assembly of sandwich structures, the corrective processes inevitably induce residual stresses in the affected areas, which adversely impact the mechanical performance of the component [12, 13].
Most studies focus either on general mechanical properties or on modelling specific defect types without defining acceptable defect dimensions.
Thus, the critical factors determining the permissible limit for a waviness-type defect are either the maximum normal stresses at the cross-section point or the maximum shear stresses at critical cross-section .
Kondratiev, Elastic properties of steel-cord rubber conveyor belt, Exp.

The influencing factors of dimensional precision in the file preparation of CAD model, manufacturing system of SLS prototype and sintering process are analyzed.
Therefore, the mechanical stresses are induced inevitably.
It is necessary to investigate the influence factors and the rule of dimension changes in sintering process to obtain SLS prototype of higher dimensional precision.
Analysis of the dimensional precision of SLS prototype The Influencing Factors of the Dimensional precision of SLS Prototype.
It is shown that the influence factors include the rate of shrinkage and transition temperature, that are essential properties of polymer.

Introduction The tensile strength is one of basic mechanical properties of concrete.
Influence factors of splitting tensile strength Then tensile strength of concrete depends on the strength of aggregate and hardening cement slurry, especially on the bonding strength of t aggregate and cement.
So compare to other test, the conversion of splitting tensile strength and cubic compressive strength is different from previous research due to the handling Influence factors differently, but in general, the mathematical model and the trend is the same.
（3） It is thought that the reason for the different values B this test and other test in splitting tensile strength is the choice of influence factors different, when considering the comprehensive factor, such the type of ceramist, maintenance mode, the width of block.
Conclusion Some conclusion can be maken below by the experimental research of splitting tensile strength and the great influence factor of the bond properties 1 The splitting tensile strength of ceramisite concrete is higher than other light weight aggregate concrete for then mix of ceramist and Molding maintenance 2 It can be used the traditional mathematics model to analysis the relationship splitting tensile strength and the cubic compressive strength of Ceramist concrete.

Firstly, the physical properties of Ti(C7N3)-15(WC+TaC) had been defined.
The mechanical properties of Ti(C7N3)-15(WC+TaC) were shown in Table.1.
Table 1 The mechanical properties and density of hot-pressed sintered Ti(C7N3)-15(WC+TaC) cermet cutting inserts Flexural strength [MPa] Vickers’ hardness HV20[GPa] Fracture toughness [MPa·m1/2] Relative density [%] 1759 18.55 6.07 99.4 Fig.3 Ti(C7N3)-15(WC+TaC) micro tool fabrication process Fig.4 shows the structure of micro hexagonal end mill which made by WEDM.
This edge radius is a determining factor in the effective feed rate and in analysing the cutting mode, i.e. shearing and ploughing.
(a) (b) (c) (d) Fig.4 Tool geometry for 500μm radius milling tool (a) (b) Fig.5 The optical microscope of micro-mill tool Conclusions Micro milling tool is one of the most important aspects affecting the successful applications of micro milling.

In a mechanical system that has periodically repeated subcomponents, premature failures or malfunctions often occur.
The rate of decay, known as localization factor by Hodges and Woodhouse [4], is employed to investigate localization phenomena (see Refs. [5, 6]).
The probability variations versus the statistical properties of the parameters are calculated through Monte Carlo simulation.
In the following, effects of some statistical parameter properties along with the number of subcomponents on the probability of frequency response localization will be discussed.
Conclusion The effects of statistical properties of the natural frequency, the coupling stiffness and the damping ratio of a periodic system on the strength of frequency response localization are investigated.

For components used in specific conditions, suitable materials that have good mechanical properties and processing performance should be chosen to prevent the predictable failures.
Human factors including assembly, operation and maintenance were responsible 31% of the failures.
Because of the high specific strength and attractive mechanical properties, materials such as titanium alloy and high strength steel have been widely used in aerial fasteners.
The material composition, preparation and properties are closely combined.
What’s more, over-heat, corrosion and foreign object damage are important factors resulting failures as well.