Search results

The presence of reinforcement in the material is modeled by dividing the structure into layers and sequentially reduction the elastic characteristics of the material based on the volume ratio of the components.
The power factor m is calculated from the logarithmic formula (R2c is the ultimate strength of concrete with uniform biaxial compression): . (8) As an analytical expression for the function η, we use the following: . (9) In (9), the power coefficient K is static (independent of the applied load) and is determined by the type of stress state in the material: . (10) The limit values required for the calculation (, , , etc.) can easily be determined using conventional formulas of the mechanics of a deformed solid body, relying on the experimental test data of the concrete under uniaxial compression.

In recent years, Mg-Al-Zn system alloy has been used for the parts in the automobile for weight reductions.
However, the detail data of Mg-Al system alloys has not been cleared until now.

The resultant silica has been subsequently reduced to metallurgical-grade silicon (MG-Si) by direct reduction using Mg powder.
This combination of ashing temperature and time has proved to produce chemically reactive silica for both samples of rice husk with particle size of approximately 0.98µm deduced from XRD data using Scherrer's formula.

In order to achieve an increased welding speed and a reduction in tool wear, this process is assisted by another one (TIG) which generates and adds heat to the process.
The experimental stand includes a FSW welding machine, a TIG welding head, an orientation and fixing device, and various data acquisition, recording and monitoring systems.

The data shows strong interaction between the two species which prevents the dissolution of an as-implanted In profile even after high temperature anneal.
A reduction of the Sb dose reduces the peak In concentration at the surface due to the typical dose-loss of In [3].

The enzyme activity was studied further, ,data shows that the optimum temperature was 45℃, which is similar to other Aeromonas sp, wheras the optimum pH is 5 and 9, which is more similar to Vibrio alginolyticus TK-22.
More over, the antimicrobial activities and the cholesterol reduction function of chitin oligosaccharides have also been demonstrated [2].

In this way, valuable data will be obtained that will contribute to a better understanding of the performance and lifetime of these components.
Diagnosis methodology for identifying gearbox wear based on statistical time feature reduction.

Introduction One of the most important engineering requirements for modern materials is the reduction of weight and an increase of performance and functionality at the same time.
Due to the different rotational speed of two adjacent rolls in a three-roll mill, particles that pass through the gap are exposed to high shear forces, which cause a reduction of the agglomerate size.
Also the line pressure increases from the first to the third step of dispersion because of the gradual reduction of the gap size.
[11] Information on http://www.nanocyl.com/wp-content/uploads/2016/07/DM-TI-02-TDS-NC7000-V08.pdf (Jan 2017) [12] Information on http://www.nanocyl.com/wp-content/uploads/2016/02/Technical-Data-Sheet-NC3152-V01.pdf (Jan 2017) [13] Information on http://www.sigmaaldrich.com/technical-documents/articles/materials-science/nanomaterials/carbon-nanofibers.html [14] C.M.

Eight thixotropic models were evaluated by least-square regressions based on experimental data.
Normally, all the parameters in models are determined through fitting of experiment data, which is the same to the following models.
Evaluation of thixotropic models For three loading conditions, after models mentioned above were integrated and dispersed, based on the principle of least square, experiment data were fitted.
Average deviation was taken as the measurement of a fitness of a model to experimental data.
Conclusions Based on the thixotropic experiment data of four kinds of waxy crude oils in three shearing ways, eight thixotropic models were evaluated.

This will be achieved by means of analysing the cutting force data and 3-D surface roughness respectively.
Experimental Set Up Cutting Tools, Workpiece Material and Data Acquisition System.
%C %Si %Mn %P %A %Cr %Mo min max min max min max min max min max min Max min max 0.32 0.42 0.85 1.15 - 0.40 - 0.035 - 0.035 4.75 5.25 1.25 1.75 %#i %Co %Cu %Sn %V %W min max min max min Max min Max Min max min max - 0.40 - - - 0.20 - 0.05 0.90 1.10 - - For the purpose of this experiment, 3-axis Kistler dynamometer was used as the standard data acquisition system to extract cutting forces information while Scanning Electron Microscope (SEM) and WYKO NT3300 white light interferometer machine was used to measure wear and the surface roughness respectively.
Conclusion The objective of coatings for cutting tools is to increase productivity through cost reduction by increasing tool life.