Characterization of flaws using the poles and zeros of the transfer function of the corresponding ultrasonic system

Characterization of flaws using the poles and zeros of the transfer function of the corresponding ultrasonic system

This investigation deals with a technique of flaw characterization which exploits the spectral phase of the echographic signal as a principal parameter. A method has been developed to determine the distribution of the poles and zeros of the transfer function of the echographic system in the complex...

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Veröffentlicht in:Ultrasonics 1993-07, Vol.31 (4), p.229-235
Hauptverfasser: Mercier, N., de Belleval, J.F., Lanceleur, P.
Format: Artikel
Sprache:eng
Schlagworte:
Acoustical measurements and instrumentation
Acoustics
Exact sciences and technology
flaw characterization
Fundamental areas of phenomenology (including applications)
non-destructive testing
Physics
signal processing
ultrasonic echography
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container_end_page 235
container_issue 4
container_start_page 229
container_title Ultrasonics
container_volume 31
creator Mercier, N.
de Belleval, J.F.
Lanceleur, P.
description This investigation deals with a technique of flaw characterization which exploits the spectral phase of the echographic signal as a principal parameter. A method has been developed to determine the distribution of the poles and zeros of the transfer function of the echographic system in the complex plane. It seems to be easier to exploit this distribution rather than dealing directly with the spectral amplitude and phase. The results obtained on several artificial flaws are presented.
doi_str_mv 10.1016/0041-624X(93)90015-R
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subjects Acoustical measurements and instrumentation
Acoustics
Exact sciences and technology
flaw characterization
Fundamental areas of phenomenology (including applications)
non-destructive testing
Physics
signal processing
ultrasonic echography
title Characterization of flaws using the poles and zeros of the transfer function of the corresponding ultrasonic system
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