Material discrimination using bispectral signatures

Material discrimination using bispectral signatures

One goal of investigative signal processing techniques is to discriminate between types of materials composing an object. This paper explores a method for material discrimination and characterization using bispectral signatures acquired from an object actively probed with acoustic pulses. The mathem...

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Veröffentlicht in:The Journal of the Acoustical Society of America 2004-09, Vol.116 (3), p.1518-1523
Hauptverfasser: NYFFENEGGER, Paul A, HINICH, Melvin J, RITTER, Dillon, HANSEN, Stephen
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Sprache:eng
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Acoustic signal processing
Acoustics
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Physics
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container_end_page 1523
container_issue 3
container_start_page 1518
container_title The Journal of the Acoustical Society of America
container_volume 116
creator NYFFENEGGER, Paul A
HINICH, Melvin J
RITTER, Dillon
HANSEN, Stephen
description One goal of investigative signal processing techniques is to discriminate between types of materials composing an object. This paper explores a method for material discrimination and characterization using bispectral signatures acquired from an object actively probed with acoustic pulses. The mathematical foundations of the bispectrum are presented, and the proposed technique is tested with an ultrasonic apparatus. Results indicate that at ultrasonic frequencies this technique provides signatures with the potential of discriminating between classes of materials such as plastic, aluminum, and rock.
doi_str_mv 10.1121/1.1780169
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source AIP Journals Complete; AIP Acoustical Society of America
subjects Acoustic signal processing
Acoustics
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Physics
title Material discrimination using bispectral signatures
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