WIT Press

Using Novelty Detection To Diagnose Damage In Structures With Time-varying Parameters

Price

Free (open access)

Paper DOI

10.2495/FR980281

Volume

19

Pages

10

Published

1998

Size

920 kb

Author(s)

C. Surace & K. Worded

Abstract

This paper describes the application of novelty detection for diagnosing damage in structures using the measured vibrational response signals. Novelty or anomaly detection is a technique for deciding whether measured data indicate departure from a pre-established normal operating condition. A scalar index is associated with a given measurement 'feature' of the system, and an alarm is raised if the index rises above a pre-determined threshold. As described in this article, the technique can be employed to detect the occurrence of faults in systems with time-varying parameters. In practice many systems exhibit sudden or continuous variation i

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