Search results

In order to analyze the water-absorbent property of silt subgrade, both the rainfall seepage and the capillary phenomenon were simulated in laboratory, which reveals that both factors have distinct effects on the moisture content of compacted silt soil.
Introduction According to investigate results on site, moisture content of embankment varies frequently during service time under the long-term influence of multi-factors, which include rainwater infiltration, capillary water rise and other factors[1-3].
By comparing safety factors of silty subgrade with different height, we can make conclusion that the greater the height is, the worse the stability is.
Subgrade stability analysis of influence factors for rainfall infiltration [J].
Impact casused by density and moisture content of The Yellow River alluvial powder soil on mechanical properties [J].Geotechnical engineering, 2008, 29 (2): 410-414

This made it possible to use rational fillers and special matrix-transformer of external electromagnetic influences as factors for controlling the processes of their structure formation and hardening to obtain materials with the required properties.
Structural characteristics control allows changing their crack resistance, physical-mechanical and deformative properties in a rather large range of values.
This should be reflected in physical-technical properties.
Such influence of control factors of structure formation of polymer-containing compositions should necessarily lead to change physical-technical properties values of end product.
Structure, Self-organization, Properties, TES, Odessa, 2010

Investigation on Strain Films in the Thin Film Resistance Strain Gauge Rongfa Chen 1,2,a, Dunwen Zuo 1,a, Yuli Sun 1,a , Duosheng Li1,a, Wenzhuang Lu1,a and Min Wang 1,a 1 Department of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China, 210016 2 Department of Mechanical Engineering, Yangzhou University, Yangzhou, China, 225009 a chenrf@nuaa.edu.cn Keywords: Nichrome thin film, Thin film resistance strain gauge; Electromechanical properties.
Some results concerning the electromechanical and structural properties of nichrome (Ni80Cr20 wt.%) thin films are presented.
We present some results concerning the electromechanical properties of nichrome (Ni80Cr20 wt.%) thin films.
The gauge factors of the films were determined using the 'Cantilever Technique'.
Conclusion The electromechanical properties of sputter deposited nichrome (Ni80Cr20 wt.%) film were studied.

However, research on service properties of materials and equipments with BDF is quite limited, although it is very important due to the raw materials and components of BDF is complex considerably, especially BDF has high hygroscopicity, easy to absorb water from the atmosphere to generate organic acid during the storage and use lead to cause corrosion [6-12].
There is also need to discuss the corrosion and fatigue properties to ensure the safety of BDF devices.
The mechanical properties of aged alloy were 222MPa of 0.2% proof stress, 307 MPa of tensile strength, 712 MPa of true fracture strength and 14.5% of reduction of area, respectively.
However the stress concentration factor due to this notch is about 1.04, so this specimen can be regarded as a plain one.
It is very necessary to further study on fatigue strength and fracture mechanics of BDF devices because those were affected by many factors such as raw materials, temperature and humidity and so on during practical application [17-20].

Previous studies [11-14] have shown that curing regimes affect the mechanical properties of MgO concrete, and constant curing temperatures in previous research have therefore been limited below 40°C despite dams existing in a variable temperature field.
A mathematical model was built to explain the differences, relevance and influencing factors of various tests under variable and constant temperature and to demonstrate how the thermostat test results apply to dams in variable temperature fields, so that reliable material properties can be provided for dam design.
Results and Discussions Mechanical Properties of Concrete under Constant-Temperature Maintenance.
Mechanical Properties of Concrete for Simulated Dam Temperature History.
Comparative Analysis of Mechanical Properties with Different Maintenance.

Industrial trial results Mechanical properties The distribution of mechanical properties of 600MPa grade hot rolled sheet for engineering mechanism is shown in table 3 and figure 1.
Table3 Mechanical properties statistics Category Min Max Average Sample amount Rel/MPa 620 740 684 187 Rm/MPa 695 810 747 A/% 18.0 26.0 21.5 Fig.1 Mechanical properties distribution Banded or chain inclusions existed in steel will make the mechanical properties anisotropic in each directions.
These differences are important factors to affect the forming performance of the steel plates.
Fig.2 The mechanical properties in different directions The wide cold experiments were tested with α=180°,bend diameter d=2a, a,B=35mm, 50mm, 70mm, 100mm.
Fig.5 The crane boom of PQ600 produced Conclusions Pangang utilizes micro-alloying and interaction of precipitation strengthening and fine-grain strengthening to produce 600MPa grade hot rolled sheet for engineering mechanism which have good mechanical properties.

The inclusion of artificial fibers in the soil has been studied by many researchers during the last years and has shown efficient by improving the mechanical properties of the soil.
Through the obtained results, it was observed that the addition of randomly distributed natural treated fibers presented significant improvements on the mechanical properties of this soil.
A number of factors such as the fiber characteristics (content, length, thickness, modulus, tensile strength and failure strain) and the soils characteristics (grain size distribution and mean particle size) influence the behavior of the soil-fiber composite [14].
The superficial treatment of vegetal fibers does not affect the mechanical behavior of these fibers.
Webster, Engineering properties of sand-fiber mixtures for road construction, Journal of Geotechnical and Geoenvironmental Engineering, 127 (2001) 258-268

The Mechanical Properties of PET Fiber Reinforced Concrete From Recycled Bottle Wastes J.M.
The study was conducted using cylindrical mold of concrete to investigate the performance of the concrete in term of mechanical properties.
There are several factors that contribute to the rapidly growth of plastics consumption such as low density, fabrication capabilities, long life, lightweight, and low cost of production [1].
The mechanical properties of the PET FRC studied are compressive strength, splitting tensile strength, and MOE.
Experimental study of thermo-mechanical properties of recycled PET fiber-reinforced concrete.

However, under some environmental factors, such as high temperature, paper tends to become aging brittle [2,3].
There are unsafe factors in technology used nowadays to enhance wrapping paper.
The objects of this study were to study the effect of kelp on coated paper and the related factors.
Physical and Mechanical Properties Test of Kelp Coated Paper[9,10].
Environmental condition had a great influence on mechanical properties of paper.

The Effect of intercritical quencing on microstructure and mechanical properties of ultra low carbon heavy steel plate were studied by utilizing SEM, TEM, tensile and impact tests.
They are the main factors influencing the transformation of austenite to martensite or bainite during cooling.
Results Mechanical properties.
Plots showing variations of mechanical properties of the steel plate with repeated quenching temperature.
Different degree of austenize can make the austenite transformate to different production attributing to the inhomogeneity of the carbon, chromium, molybdenum and manganese etc. content after quenched, and then affect the mechanical properties.