IJPAM: Volume 97, No. 1 (2014)

DUAL-TREE COMPLEX WAVELET TRANSFORM APPLIED
TO FAULT MONITORING AND IDENTIFICATION
IN AERONAUTICAL STRUCTURES

C.C.E. Abreu$^1$, F.R. Chavarette$^2$, F. Villarreal$^3$,
M.A.Q. Duarte$^4$, F.P.A. Lima$^5$
$^{1,5}$Electrical Engineering PhD Program
UNESP - Univ. Estadual Paulista
Brasil Avenue, 56, 15385-000, Ilha Solteira, SP, BRAZIL
$^{2,3}$Mathematics Department
UNESP - Univ. Estadual Paulista
Brasil Avenue, 56, 15385-000, Ilha Solteira, SP, BRAZIL
$^4$Universidade Estadual de Mato Grosso do Sul
Unidade Universitária de Cassilândia
Rodovia MS 306 KM 06, 79540-000
Cassilândia, MS, BRASIL


Abstract. This paper proposes the application of the dual-tree complex wavelet transform on fault monitoring and identification in aeronautical structures. For this purpose, a multiscale analysis from phase of the complex wavelet coefficients is proposed. Phase is very sensitive to variations of the signal capturing small flaws. Furthermore, magnitude provides information about the intensity of failure. Simulation results from a beam model showed that the proposed method achieved good performance in small flaws identification.

Received: July 18, 2014

AMS Subject Classification: 42C40

Key Words and Phrases: dual-tree complex wavelet transform, fault monitoring and identification, aeronautical structures

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DOI: 10.12732/ijpam.v97i1.9 How to cite this paper?

Source:
International Journal of Pure and Applied Mathematics
ISSN printed version: 1311-8080
ISSN on-line version: 1314-3395
Year: 2014
Volume: 97
Issue: 1
Pages: 89 - 97


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