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A double exponential model for AE signals

Majeed, MA and Murthy, CRL (1994) A double exponential model for AE signals. In: Journal of Acoustic Emission, 12 (3-4). pp. 107-110.

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Abstract

Acoustic emission (AE) signals are conventionally modeled as damped or decaying sinusoidal functions. A major drawback of this model is its negligible or zero rise time. This paper proposes an alternative model which provides for the rising part of the signal without sacrificing the analytical tractability and simplicity of the conventional model. The,signals obtained from the proposed model through computer programs are illustrated for demonstrating their parity with actual AE signals. Also derived are analytic expressions for the time-domain parameters, viz., peak amplitude and rise time used in conventional AE signal processing (4 refs.)

Item Type: Journal Article
Additional Information: The copyright of belongs to Acoustic Emission Group.
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering (Formerly, Aeronautical Engineering)
Date Deposited: 21 Aug 2006
Last Modified: 27 Aug 2008 12:16
URI: http://eprints.iisc.ernet.in/id/eprint/8042

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