Search results

Utilization of Geosynthetic Material Interfaces for Reduction of Cyclic Motion Induced Accelerations Volkan Kalpakci1, a 1Department of Civil Engineering, Hasan Kalyoncu University, Şahinbey / Gaziantep / Turkey avolkan.kalpakci@hku.edu.tr Keywords: Geosynthetic, geotextile, geomembrane, cyclic, isolation, interface Abstract.
The accelerations of the base and the models were measured by strain-gauge based accelerometers and the data were captured by a 250Hz dynamic data logger.

.%) steels subjected to hot plate rolling at a temperature of 1423 K with a total reduction of 60% were studied.
The steel melts were annealed at 1423 K followed by hot rolling with about 60% reduction.
At least two specimens were tested for each data-point.
The EBSD data-points with a confidence index below 0.1 were replaced with black points in the OIM images.
Note here that the chemical compositions of the austenite at 1423 K as calculated by ThermoCalc (TCFE7 data base) were used for the calculations.

Materials and methods Collection of data.
Climatic data were obtained from the Chinese meteorological data sharing service system (http://cdc.cma.gov.cn).
Annual climatic data were chosen for meteorological stations corresponding to the latitude and longitude of the research sites.
If the research sites had no corresponding meteorological stations, climatic data were taken from adjacent stations that were closely located.
Data treatment.

For a sample data, Observed variables, samples data matrix as follows: (1) Principal component analysis is based on observed variables become new variables integrated (integrated variable) (2) The Analysis of Coastal Areas of China's Consumer Price China's coastal area residents’ consumption level factors include: food, alcohol and tobacco and supplies, ect.
Coastal towns of consumer expenditure data are shown in Table 1 and Table 2.
The second step: Using SPPS in dimension reduction/factor analysis of the standardized data on principal component analysis, correlation matrix analysis results, as shown in Table 3.
The initial factor loading matrix two data input to the data editor window, and then use "Transform/Compute Variable", in the Compute Variable dialog box, enter "a1 = X1/SQR (5.877)" get the first feature vector with the same second feature vectors obtained and has been feature vector[5], as shown in Table 6.
[3] Fang Luo, Hongyun Liu, Huang Kun, SPSS statistics and data analysis; Tsinghua University Press, Beijing ,2009

The effects of preheating temperature were also investigated on the chip morphology during the end milling of AISI H13 tool steel, which resulted in reduction of chip serration frequency.
This data acquisition (DAQ) device uses accelerometer which is piezo-electric sensor, is placed on the spindle, perpendicular to the direction of cutting.
In the figure 4 (b), preheated machining technique has improved the cutting tool performance in influencing the reduction of tool wear at cutting speed of 120 m/min.
The data were taken for every 40mm length of cut.
These were three ranges of frequencies that have been observed in the vibration and chatter data during both conditions, which were 500-1200Hz, 1500-2000 Hz and 7500-10200 Hz.

Accordingly, this study focuses on the effect of regeneration and cooling of the inlet air on performance of an open cycle gas turbine plant, which mainly includes improvement in its thermal efficiency and reduction in specific fuel consumption.
As an example, 12.89% increase in thermal efficiency is found at a regenerator effectiveness of 0.85 on addition of spray cooler before compression of inlet air at an ambient temperature of 328K, and subsequent reduction in specific fuel consumption is found as 2.85% at pressure ratio of 10.
They emphasised in reduction of the intake air temperature in order to enhance the overall efficiency of any plant.
In case of turbine and compressor, necessary assumptions are presented here as: · Steady state flow · Insulated · Same potential head at inlet and outlet datum Accordingly, under a steady state condition, the energy balance of the air flows from state-1 to state-2 of the compressor is presented here as: (1) Fig. 3 Schematic T-s diagram for the regenerative Brayton cycle Hence, related specific energy balance (energy balance per unit mass) is given as: (2) The considered assumptions lead Eq. (2) to a relation as: (3) Now, size of inlet and outlet pipes of the compressor is to be designed such a way to maintain, which presents the specific energy balance as (4) In case of compressor, work is done on the system.
In brief, in a high temperature environmental condition, adding of a spray cooler before compression is very essential in order to reduce specific fuel consumption that leads reduction in emission of the pollutants.

Most significantly was the reduction of pitting resistance potential with increase in exposure time. 1.
The software was also used to analyze the experimental data.
This protective biofilm blocks further chloride action on the metal surface hence reduction on corrosion rate.

The rare earth elements don’t form independent phases in ceramic coating but affect the relative proportion of constitution phases, resulting in the reduction of intermixed magnesium phase and the increase of the MgO and MgSiO3 phases.
Therefore the growth process of ceramic coating accords with linear regularity with data fitting software CurveExpert1.3 in the anodic oxidation stage.
In the micro-arc oxidation stage, data fitting software CurveExpert1.3 shows that the growth process of ceramic coating changes to parabolic regularity.
The growth process of ceramic coating still accords with parabolic regularity with data fitting software CurveExpert1.3 in the arc light stage.
The rare earth elements don’t form independent phases in ceramic coating but affect the relative proportion of constitution phases, resulting in the reduction of intermixed magnesium phase and the increase of the MgO and MgSiO3 phases.

Fatigue test data were used in conjunction with different modes to establish the relationship between temperature and other parameters.
However, often the experimental data on rupture life under the actual operating stress and temperature may not be available as the generation of such data is highly time consuming and expensive.
Table 1 shows the elevanted-temperature data for the AISI347 stainless steel.
The correlation can be achieved by comparing fracture data from tests against the prediction obtained using the model estimated based on materials test data and simplifying assumptions.
Seeger, Materials Data for Cyclic Loading, Parts A-E, Elsevier, 1987 [11] R.J.

The article examines the impact of nanodefects on the reduction of the crystals strength.
The calculations confirm the validity of the proposed theoretical model of reduction or the hanging of the crystals strength by the atoms interaction with the external environment.
In connection with this conclusion opens the possibility of the inverse problem experimental solution, i.e. determine the numerical value of Planck's constant on the analysis basis of the ionic crystals strength tests data.
(17) Using the experimental data of A.Ioffe on σb value, λ, m, C for a dry crystal of NaCl, you will get a numerical value erg*sec, (18) which is within the margin of error differs from the Planck`s constant value established by other experimental methods.