Nondetection, False Alarm, and Calibration Insensitivity in Kurtosis- and Pseudofractal-Based Singularity Detection
Publication: Journal of Aerospace Engineering
Volume 22, Issue 4
Abstract
This work isolates cases of nondetection, false alarm, and insensitivity for a general class of problems dealing with the detection and characterization of existence, location, and extent of singularities embedded in signals or in their derivatives when employing kurtosis- and pseudofractal-based methods for the detection and characterization process. The nondetection, false alarm, and insensitivity for these methods are illustrated on an example problem of damage identification and calibration in beams where the singularity to be identified lies in the derivative of the measured signal. The findings are general, not constrained to linear systems, and are potentially applicable to a wide range of fields including engineering system identification, fault detection, health monitoring of mechanical and civil structures, sensor failure, aerospace engineering, and biomedical engineering.
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Information & Authors
Information
Published In
Journal of Aerospace Engineering
Volume 22 • Issue 4 • October 2009
Pages: 466 - 470
Copyright
© 2009 ASCE.
History
Received: Nov 16, 2007
Accepted: Jan 21, 2009
Published online: Sep 15, 2009
Published in print: Oct 2009
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