Search results

The paper deals with comparison of chosen mechanical properties of cement composites reinforced by carbon microfibers.
Each sample was tested by destructive methods to determine their mechanical and physical properties.
In comparison with other materials that are used as dispersed reinforcement, they have excellent mechanical properties [5-7].
Adding more mixing water, cement and fillers to the mixture CF2 has not any positive effect on mechanical properties.
These two factors have affected the microstructure and probably distribution curve of the pores.

The mechanical properties of the heat-treatable alloys are improved by solution heat treatment and controlled ageing.
AA2024 is a heat-treatable alloy and mechanical properties of the alloy can be improved by precipitation hardening process.
The mechanical properties of AA2024 become a substantially stable condition after 7 days with the natural ageing and the properties of the alloy will not change even after years [7].
So three levels L9 orthogonal array was used to investigate the effect of 4 factors.
The factors and their levels are given in Table 2.

The measurement results indicated that the milling technique affected both of physical and mechanical properties of the lead-free BZT ceramics.
Many reports have suggested that properties of BZT ceramics depended on many factors such as microstructures and dopants [5].
Relations between these factors and their properties have been extensively studied [6].
It seems that the mechanical properties were improved by milling technique.
For example, a higher density results in a better mechanical properties while a larger grain size produces a lower mechanical properties.

The physical and mechanical properties and microstructure of Q2 loess are of great theoretical and practical significance.
These are due to its internal stress distribution caused by uneven, the internal structure of loess is one of the main factors affecting the stress distribution.
Methods Soil samples are from the Lin-tong District, Through the geotechnical experiment, study the basic physical and mechanical properties of loess;Q2 loess electron processing, analysis the microstructure characteristics of loess and links with the physical and mechanical properties.
By the loess Q2 of the experiment of the physical properties can get physical properties analysis, The results is shown in Table 1.
By the loess Q2 of the experiment of the mechanical properties can get physical properties analysis, The results is shown in Table 2.

The mechanical and damping properties of the composites were analyzed by mechanics test, DMA and vibration beam method.
Results and discussion 3.1 Mechanical properties of materials By testing the mechanical properties, the results in Fig.1 show that the content of the carbon fiber have a greater impact on mechanical properties of the piezoelectric ceramic composite.
But when the content exceeds 0.33%, the composite loss factor begins to decrease and the damping performance degrades, because with the content increasing, the surface immersional wetting properties between piezoelectric ceramic, carbon fiber and EP resin become worse affecting the structure of composite materials.
Conclusion  In this paper，epoxy resin base piezoelectricity damping carbon fiber composite was prepared, and its damping properties, mechanical properties were analyzed.
Considering damping properties and mechanical properties, composite adding 60% nano-PT and 0.25% CF is the best and can be used as structural damping material.

Effect of Low Energy ECR Ion Beam Irradiation on Micro Nano Scale Mechanical Properties of Silicon Y.X.
If those parts are in micro nano scale such as micro interconnector, micro valve, micro actuator, and micro switch in that case micro nano mechanical properties is an important factor for better performance.
From data analysis It shows accelerating energy is an important factor to control mechanical property of material during nano scale fabrication by ion beam.
When ion beams are irradiated on surface of material for any fabrication, the major mechanical and surface properties have been changed due to irradiation effect.
The mechanical properties of irradiated Si are very sensitive to the amount of accelerating energy.

Abstract: In order to weaken the loss of erosion damage for highway slope in loess area, the author analyzes the main factors affecting the erosion and puts forward prevention measures by theoretical analysis and field survey.
Large-scale erosion damage is easy to be caused in loess slope by rainfall splashing and scouring effect of water for the slope combining with special physical properties and hydrological properties.
Degree of rainfall erosion on the highway slope of loess area is affected by the various above factors.
Silts in loess are dominant, but the loess physical and mechanical properties are significantly affected by clay particles.
(2)Summarize the main factors affecting rainfall erosion damage of the slope, such as catchment area, slope length, slope grade, vegetation coverage and soil parameters, etc.

Soil permeability, one of the important physical properties of soil, is closely related to water supply intensity, soil structure and soil moisture conditions.
At this moment, infiltration rate is affected not only by the level of soil properties, structure and profile, but also by the impact of soil moisture content.
Factors affecting infiltration process a.
The chemical properties of the soil: Soil permeability is significantly positively correlated with soil organic matter, total N, total K, hydrolysis of N [5].
Soil chemical properties change the soil permeability mainly by influencing the growth of trees.

The properties of Roman cement are influenced by many factors, especially raw materials composition and burning conditions.
At present, this material has received considerable attention due to its excellent advantageous physical-mechanical properties and long service life.
The resulting properties of hardened Roman-cement based mortars can vary significantly because they are determined not only by the properties and composition of the binder but also by other factors such as the ratio of the binder and filler, type of aggregate, water to cement ratio, etc. [2].
Results Fresh mortar properties.
Hardened mortar properties.

The mechanical properties are determined differently by the processing variables.
Fig. 4 shows the variations of the mechanical properties as function of the processing variables.
The distinct mechanical properties are determined differently by the processing variables.
Thermomechanical Environment-Mechanical Properties Relationships.
The distinct mechanical properties are determined differently by the processing variables.