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On using peak amplitude and rise time for AE source characterization

Majeed, MA and Murthy, CRL (2002) On using peak amplitude and rise time for AE source characterization. In: Sadhana : Academy Proceedings in Engineering Sciences, 27 (part 3). pp. 295-307.

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Abstract

Acoustic Emission (AE) signals, which are electrical version of acoustic emissions, are usually analysed using a set of signal parameters. The major objective of signal analysis is to study the characteristics of the sources of emissions. Peak amplitude (P-a) and rise time (R-t) are two such parameters used for source characterization. In this paper, we theoretically investigate the efficiency of P-a and R-t to classify and characterize AE sources by modelling the input stress pulse and transducer. Analytical expressions obtained for P-a and R-t clearly indicate their use and efficiency for source characterization. It is believed that these results may be of use to investigators in areas like control systems and signal processing also.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Indian Academy of Sciences.
Keywords: Acoustic emission;source characterization;efficient parameters;peak amplitude;rise time.
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering (Formerly, Aeronautical Engineering)
Date Deposited: 21 Jul 2011 06:35
Last Modified: 21 Jul 2011 06:35
URI: http://eprints.iisc.ernet.in/id/eprint/39317

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