The Impedance and Scattering Properties of a Perfectly Conducting Strip Above a Plane Surface-Wave System (Short Papers)

1973 ◽  
Vol 21 (6) ◽  
pp. 413-419 ◽  
Author(s):  
E.S. Gillespie ◽  
F.J. Kilburg
Keyword(s):  
Surface Wave ◽  
Plane Surface ◽  
Wave System ◽  
Conducting Strip

Diffraction by a wide unidirectionally conducting strip

1968 ◽  
Vol 46 (18) ◽  
pp. 2107-2117 ◽  
Author(s):  
E. V. Jull
Keyword(s):  
Integral Equation ◽  
Electromagnetic Wave ◽  
Surface Wave ◽  
Cross Section ◽  
Plane Electromagnetic Wave ◽  
Normal Incidence ◽  
Wave Excitation ◽  
Strip Surface ◽  
Scattering Cross ◽  
Conducting Strip

The diffraction of a plane electromagnetic wave by an infinitely long, unidirectionally conducting strip is formulated as a Wiener–Hopf integral equation and is solved asymptotically for a wide strip by transform techniques. In addition to the diffracted fields produced by a perfectly conducting strip, surface-wave excitation and scattering at the edges and interaction between the ends of the lines of conductivity appear in the solution. These effects are illustrated by numerical results of the scattering cross section at normal incidence for various directions of conductivity.

An Experimental Surface-Wave Method for Recording Force-Time Curves in Elastic Impacts

1959 ◽  
Vol 26 (1) ◽  
pp. 3-7
Author(s):  
J. N. Goodier ◽  
W. E. Jahsman ◽  
E. A. Ripperger
Keyword(s):  
Surface Wave ◽  
Plane Surface ◽  
Hopkinson Pressure Bar ◽  
Time Curve ◽  
Experimental Surface ◽  
Force Time ◽  
Steel Balls ◽  
Pressure Bar ◽  
Surface Wave Method ◽  
The Impact

Abstract The recording of impacts by means of the longitudinal strain wave generated in a Hopkinson pressure bar is no longer possible when the impact is very brief, on account of dispersive effects. The Rayleigh surface wave generated on the plane surface of a block is nondispersive. A method is given for deducing the force-time curve of the impact from the oscilloscope record of the surface wave, and applied to impacts of small steel balls on a block.

scholarly journals Seismic Surface Wave Testing for Investigating the Shallow Soil Profile

2015 ◽  
Vol 773-774 ◽  
pp. 1565-1568 ◽  
Author(s):  
Zainudin Siti Zuraidah ◽  
Aziman Madun ◽  
Joret Ariffuddin ◽  
L.A. Mohammad Faiz
Keyword(s):  
Surface Wave ◽  
Soil Profile ◽  
Shear Test ◽  
Seismic Velocity ◽  
Seismic Energy ◽  
Testing System ◽  
Wave System ◽  
Shallow Soil ◽  
Vane Shear Test ◽  
Wave Technique

This research explores the use of the seismic surface wave technique which is called as a spectral analysis of surface wave (SASW) for investigating the shallow soil profile. The testing was conducted on soft ground located at Universiti Tun Hussein Onn Malaysia (UTHM). The testing was conducted using a new developed in-house seismic surface wave testing system. An impact source using 5 kg hammer is used to generate seismic energy and four differencesarrangement of the source to receiver distances to produce soil profile. The profile of phase velocity was obtained at a depth of 0.15 m to 1.8 m were between 68 m/s and 95 m/s. The results were calibrated with the hand vane shear test which is used to obtain the undrained shear strength and thus converted empirically to seismic velocity at 45 m/s and 95 m/s. The result shows good agreement between velocity obtained from the surface wave testing system and hand vane shear test. Therefore, the new developed in-house seismic surface wave system has been proven can be used to determine the seismic velocity at shallow depth.

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