scholarly journals Energy Redistribution in an Ultrasonic Beam Reflected from an Interface

1971 ◽  
Vol 50 (1A) ◽  
pp. 105-105
Author(s):  
James H. Smith ◽  
Richard F. Smith ◽  
M. A. Breazeale
Keyword(s):  
Ultrasonic Beam ◽  
Energy Redistribution

Numerical Calculation on Flaw Response in Inhomogeneous Media

2011 ◽  
Vol 328-330 ◽  
pp. 1188-1193
Author(s):  
Gang Feng Zheng ◽  
Bin Wu ◽  
Cun Fu He
Keyword(s):  
Velocity Dispersion ◽  
Solid Medium ◽  
Ultrasonic Attenuation ◽  
Geological Mapping ◽  
Medical Studies ◽  
Ultrasonic Beam ◽  
Ultrasonic Methods ◽  
Phase Velocity Dispersion ◽  
Different Dimensions ◽  
Ultrasonic Nde

Ultrasonic methods are used in a wide variety of applications including medical studies, geological mapping, and nondestructive evaluation (NDE) tests. In the field of ultrasonic NDE, it is necessary to treat inverse problems of various types. The objective of this paper is to predict the flaw response in an inhomogeneous solid medium. A mathematical modelling of the testing situation is very valuable for a number of reasons. The modelling helps in developing physical intuition and in the interpretation of tests. Multi-Gaussian Beam (MGB) model is used to represent the incident ultrasonic beam. The effect of ultrasonic attenuation and phase velocity dispersion due to grain scattering is included in the predictions. The variation of received voltage is analyzed against the distance of the flaw from the transducer for different dimensions of a square cylinder void. The effect of variation of mean diameter of the grains on the received voltage for different domain of interest is also studied.

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