Currents induced in a model of a rat exposed to EMP in a parallel-plate line: Calculations and experimental results

1992 ◽  
Vol 13 (5) ◽  
pp. 439-443 ◽  
Author(s):  
Ben-Qing Gao ◽  
Om P. Gandhi ◽  
Satnam Mathur ◽  
Frank Bates ◽  
Howard Bassen
Keyword(s):  
Parallel Plate ◽  
Experimental Results

Experimental Verification of Rarefied Gas Squeezed-Film Damping Models Used in MEMS

2006 ◽  
Author(s):  
Lukas Mol ◽  
Luis A. Rocha ◽  
Edmond Cretu ◽  
Reinoud F. Wolffenbuttel
Keyword(s):  
Experimental Verification ◽  
Parallel Plate ◽  
Rarefied Gas ◽  
Experimental Results ◽  
Squeeze Film ◽  
Border Effects ◽  
Knudsen Numbers ◽  
Electrostatic Mems ◽  
Simulation Errors

Existing compact parallel-plate squeeze-film models including rarefaction and border effects are verified using the experimental results of a new electrostatic MEMS actuation technique that enables full gap positioning. Measurements at high Knudsen numbers ranging from 0.03 to 0.18 are performed and results compared to the models. The simulation errors are confirmed to be lower than 20%. The experiments also indicate that both gas rarefaction and border effects have to be included in any model.

Computer Simulation of the Deformation of Dough-Like Materials in a Parallel Plate Gripper

1996 ◽  
Vol 210 (2) ◽  
pp. 119-126 ◽  
Author(s):  
B S Evans ◽  
P N Brett
Keyword(s):  
Computer Simulation ◽  
Parallel Plate ◽  
Experimental Results ◽  
Computationally Efficient ◽  
Flexible Automation ◽  
Planning And Control ◽  
Careful Control ◽  
And Control ◽  
Automated Handling ◽  
The Way

Flexible automation for the handling of rigid materials has been available for many years, but similar systems are not as yet available for the handling of non-rigid materials such as doughs. The properties of this type of material require careful control of gripping and manipulation forces to prevent the product from deforming out of tolerance during handling. This paper describes a computationally efficient model that has been developed for use in the planning and control of gripping and manipulation strategies for dough-like materials. In addition to describing the model and the way in which it would be used in an automated handling environment, experimental results demonstrating the accuracy of the model in predicting the behaviour of three doughs are presented.

Transition Process From Contact to Floating State in a Squeeze Air Film

1998 ◽  
Vol 120 (1) ◽  
pp. 60-68 ◽  
Author(s):  
K. Kajiwara ◽  
Y. Harayama ◽  
R. Ueda ◽  
T. Sonoda
Keyword(s):  
Parallel Plate ◽  
Direct Detection ◽  
Transition Process ◽  
Experimental Results ◽  
Experimental Result ◽  
Test Material ◽  
Squeeze Film ◽  
The Time Domain ◽  
Dc Current ◽  
Air Film

This paper presents a series of trials of direct detection of the transition process of a squeeze film, from the contacting state into the floating one. The material was initially placed on the surface of a vibrator constituting a squeeze air film. Three electrical trials were performed to certify whether the material could be elevated after the vibrator was excited. When this is done, clearance is expected between the surfaces of the test material and the vibrator. This may be regarded as the equivalent of a change in electrical resistance from almost zero to infinity, with a kind of parallel-plate capacitor being formed. First, detection through DC current was carried out. The experimental result, however, reveals that the resistance never does become infinite, although the equivalent contacting area calculated from this value is very small. Second, detection through DC voltage was performed by terminating the clearance with parallel resistance. The experimental results verify the appearance of the floating state. Third, the average clearance could be detected by regarding it as a parallel-plate type capacitor. Here a Langevin type piezoelectric transducer was used as the vibrator. Through these experimental results an important fact was observed: the waveform of the voltage applied to the transducer is closely related to the movement of the clearance in the time domain.

SCATTERING OF ELECTROMAGNETIC WAVES BY COAXIAL CYLINDERS

1956 ◽  
Vol 34 (5) ◽  
pp. 510-520 ◽  
Author(s):  
Albert W. Adey
Keyword(s):  
Transmission Line ◽  
Electromagnetic Waves ◽  
Parallel Plate ◽  
Near Field ◽  
Experimental Results ◽  
Metal Cylinder ◽  
Scattering System ◽  
Coaxial Cylinders ◽  
Scattered Fields ◽  
Good Agreement

A scattering system comprising two coaxial, dielectric cylinders has been studied theoretically and experimentally. Calculations have been made of the forward and back scattered fields for several combinations of inner and outer radii. It has been found that, by covering a metal cylinder with a coaxial dielectric shield, it is possible to eliminate to some extent the deep near-field shadow. Experimental results obtained at a wavelength of 3.275 cm. using a parallel-plate transmission line are in good agreement with calculations.

Effects of Interfacial Position on Drag Reduction in a Superhydrophobic Microchannel

2008 ◽  
Author(s):  
Ryan Enright ◽  
Tara Dalton ◽  
Tom N. Krupenkin ◽  
Paul Kolodner ◽  
Marc Hodes ◽  
...  
Keyword(s):  
Pressure Drop ◽  
Drag Reduction ◽  
Flow Rate ◽  
Contact Line ◽  
Superhydrophobic Surface ◽  
Parallel Plate ◽  
Laser Scanning ◽  
Liquid Interface ◽  
Experimental Results ◽  
Superhydrophobic Surfaces

The use of superhydrophobic surfaces in confined flows is of particular interest as these surfaces have been shown to exhibit a drag reduction effect that is orders of magnitude larger than those due to molecular slip. In this paper we present experimental results of the pressure-driven flow of water in a parallel-plate microchannel having a no-slip upper wall and a superhydrophobic lower wall. Pressure-drop versus flow-rate measurements characterize the apparent slip behavior of the superhydrophobic surfaces with varying pillar-to-pillar pitch spacing and pillar diameter. The superhydrophobic surface consists of a square array of cylindrical pillars that are fabricated by deep reactive ion etching on silicon and coated with a hydrophobic fluoropolymer. A major challenge, in correlating our experimental results with existing theoretical predictions, is uncertainty in the location of the gas/liquid interface and the associated gas/liquid/solid contact line within the pillar features comprising the superhydrophobic surface. We present experimental results, from laser-scanning confocal microscopy, that measure the location of the gas-liquid interface and associated contact line for fluid flowing through a parallel-plate microchannel. Knowledge of the contact line location is then used to correlate experimental pressure-drop versus flow-rate data with a theoretical model based on porous-flow theory that takes into account partial penetration of liquid into a superhydrophobic surface.

scholarly journals Sum Rules for Parallel-Plate Waveguides: Experimental Results and Theory

2014 ◽  
Vol 62 (11) ◽  
pp. 2574-2582 ◽  
Author(s):  
Iman Vakili ◽  
Mats Gustafsson ◽  
Daniel Sjoberg ◽  
Rebecca Seviour ◽  
Martin Nilsson ◽  
...  
Keyword(s):  
Parallel Plate ◽  
Sum Rules ◽  
Experimental Results

scholarly journals The Performance of SiO2 and TiO2 Nanoparticles as Lubricant Additives in Sunflower Oil

Lubricants ◽  
2020 ◽  
Vol 8 (1) ◽  
pp. 10 ◽  
Author(s):  
Vicente Cortes ◽  
Karen Sanchez ◽  
Ramiro Gonzalez ◽  
Mataz Alcoutlabi ◽  
Javier A. Ortega
Keyword(s):  
Silicon Dioxide ◽  
Tio2 Nanoparticles ◽  
Sunflower Oil ◽  
Parallel Plate ◽  
Lubricant Additives ◽  
Experimental Results ◽  
Wear Protection ◽  
The Coefficient Of Friction ◽  
Conventional Models ◽  
Biodegradable Lubricant

In recent years, there has been growing concern regarding the use of petroleum-based lubricants. This concern has generated interest in readily biodegradable fluids such as vegetable oils. The present work evaluated the rheological and tribological characteristics of sunflower oil modified with silicon dioxide (SiO2) and titanium dioxide (TiO2) nanoparticles as lubricant additives at different concentrations. A parallel plate rheometer was used to evaluate the effects of concentration and shear rate on the shear viscosity, and the experimental data was compared with conventional models. The wear protection and friction characteristics of the oil-formulations were evaluated by conducting block-on-ring sliding tests. Surface analysis-based instruments, including scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), and profilometry, were used to characterize the morphology and structure of the worn surfaces. The experimental results showed that the coefficient of friction decreased with the addition of SiO2 and TiO2 nanoparticles by 77.7% and 93.7%, respectively when compared to base sunflower oil. Furthermore, the volume loss was lowered by 74.1% and 70.1%, with the addition of SiO2 and TiO2 nanoparticles, respectively. Based on the experimental results, the authors conclude that modified sunflower oil enhanced with nanoparticles has the potential for use as a good biodegradable lubricant.

Sign in / Sign up

Export Citation Format

Share Document