Numerical Interpolation

2015 ◽  
pp. 169-208
Author(s):  
Bilal M. Ayyub ◽  
Richard H. McCuen
Keyword(s):  
Numerical Interpolation

A numerical interpolation of Kováts indices without dead time correction

1989 ◽  
Vol 27 (5-6) ◽  
pp. 205-208 ◽  
Author(s):  
M. Maeck ◽  
A. Touabet ◽  
A. Y. Badjah Hadj Ahmed ◽  
B. Y. Meklati
Keyword(s):  
Dead Time ◽  
Dead Time Correction ◽  
Numerical Interpolation ◽  
Kováts Indices ◽  
Time Correction

scholarly journals HERMITE NUMERICAL METHOD TO ESTIMATE THE RADON AND RADIUM EFFECTS OF THE SOIL IN BARTELLA REGION

2020 ◽  
Vol 2 ◽  
pp. 58-64
Author(s):  
Hekmat SH. Mustafa ◽  
Malik H. Kheder ◽  
Sarah Ghanim Mahmood
Keyword(s):  
Mathematical Method ◽  
Interpolation Method ◽  
Soil Samples ◽  
Alpha Particles ◽  
Experimental Measurements ◽  
High Radiation ◽  
Radon Exposure ◽  
Human Health Damage ◽  
Health Damage ◽  
Numerical Interpolation

The Hermite numerical interpolation method used to estimate and predict the radon and radium concentrations, from some of the experimental measurements made on the soil samples of the Bartella region in Iraq. The results obtained from deductible mathematical method were close to real experimental results. Predicted results are in the range of 80.04–4051.59 Bq/m3radon concentrations and 0.322–17.276 Bq/Kgradium concentrations corresponding to 200-10000 tracks of alpha particles. The maximum errors were less than 0.289 and 1.172 percent for radon and radium concentrations, respectively. The effects of radium and radon radiations estimated of soil in the studied area depend on its concentrations, a higher number of alpha particle tracks mean high radiation concentration, the high radiation will cause human health damage. The values are below 370 Bq/Kg the recommended radium concentration permissible values, by the Organization ащк Economic Cooperation and Development (OECD), the studied area is safe from hazards on health of radium and radon exposure from the soil

Integrated Sensing of Pressure Distribution at the Workpiece-Tool Interface in Sheet Metal Stamping

2009 ◽  
Author(s):  
Sripati Sah ◽  
Robert X. Gao
Keyword(s):  
Pressure Distribution ◽  
Sheet Metal ◽  
Force Sensors ◽  
Test Bed ◽  
Distribution Maps ◽  
Sheet Metal Stamping ◽  
Metal Stamping ◽  
Numerical Interpolation ◽  
Discrete Nature ◽  
And Performance

To improve process monitoring in the sheet metal stamping process, it is of interest to measure the contact pressure distribution at the workpiece-tool interface. This paper presents the design and performance evaluation of a tooling integrated sensing method that estimates the pressure distribution on the contact interface through an array of force sensors embedded in the stamping tool. Experiments were conducted to evaluate two techniques for integrating force sensors into the tool structure. The spatially discrete nature of the sensor measurements necessitates the use of a numerical interpolation model to construct continuous pressure distribution maps from the discrete sensing locations. Experiments conducted on a customized panel stamping test bed confirmed the effectiveness of the tooling-integrated sensing method for improving the observability of the process with benefits to process designers.

Experimental Validation of the Simulated Steady-State Behavior of Porous Journal Bearings1

2016 ◽  
Vol 138 (3) ◽  
Author(s):  
Ioana Adina Neacşu ◽  
Bernhard Scheichl ◽  
Georg Vorlaufer ◽  
Stefan J. Eder ◽  
Friedrich Franek ◽  
...  
Keyword(s):  
Experimental Validation ◽  
Stribeck Curve ◽  
Interpolation Scheme ◽  
Eccentricity Ratio ◽  
Main Interest ◽  
State Behavior ◽  
Frictional Behavior ◽  
The Coefficient Of Friction ◽  
Numerical Interpolation ◽  
Lubricant Viscosity

This study deals with a comparison between new experiments on the frictional behavior of porous journal bearings and its prediction by previous numerical simulations. The tests were carried out on bearings lubricated with polyalphaolefin (PAO)-based oils of distinct viscosities. The theoretical model underlying the simulations includes the effects of cavitation by vaporization and accounts for the sinter flow by virtue of Darcy's law. The effective eccentricity ratio corresponding to the experimentally imposed load is estimated by an accurate numerical interpolation scheme. The comparison focuses on the hydrodynamic branches of the Stribeck curve by dimensional analysis (DA), where the variations of the lubricant viscosity with temperature are of main interest. The numerically calculated values of the coefficient of friction are found to reproduce the experimentally obtained ones satisfactorily well in terms of overall trends; yet, the former lie predominantly below the measured ones, which results in a low-positive correlation between the two.

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