Article

Measurements of velocity and attenuation of leaky waves using an ultrasonic array.

Department of Physics, University of Windsor, 401 Sunset Avenue, Windsor, Ont., Canada N9B 3P4.
Ultrasonics (impact factor: 1.84). 03/2006; 44(2):182-7. DOI:10.1016/j.ultras.2005.10.005 pp.182-7
Source: PubMed

ABSTRACT A new method of measuring velocity and attenuation of leaky surface waves is presented. A single focused transmitting transducer and linear receiving array in a pitch-catch arrangement are used in the proposed system. The spatial distribution of the acoustic field in the leaky wave is recorded by the array, and the parameters of the leaky wave can be obtained by processing the output waveforms. In comparison with existing material characterization systems, the mechanical scanning of the transducers is not used any more, and the measurement time is only limited by the time of the wave propagation and speed of the electronic data acquisition system.

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Keywords

acoustic field
 
electronic data acquisition system
 
leaky surface waves
 
leaky wave
 
material characterization systems
 
measurement time
 
new method
 
output waveforms
 
proposed system
 
spatial distribution
 
transmitting transducer
 
wave propagation
 

Sergey Titov