| Título |
Wavelet and Lipschitz exponent based damage identification method for beams using mode shapes |
| Autores |
Ma, Qiaoyu , Solis, Mario , RODRÍGUEZ MARISCAL, JOSÉ DANIEL, Galvin, Pedro |
| Publicación externa |
Si |
| Medio |
MEASUREMENT |
| Alcance |
Article |
| Naturaleza |
Científica |
| Cuartil JCR |
1 |
| Cuartil SJR |
1 |
| Impacto JCR |
5.6 |
| Impacto SJR |
1.106 |
| Fecha de publicacion |
01/12/2022 |
| ISI |
000894041400002 |
| DOI |
10.1016/j.measurement.2022.112201 |
| Abstract |
This paper presents a damage identification method for beam-type structures based on the wavelet analysis. The damage location is predicted by a Damage Locating Index (DLI) based on a combined identification of local maxima from the scalograms of mode shapes. A new Damage Severity Index (DSI) based on the Lipschitz exponent is formulated such that it is not dependent on the damage locations, boundary conditions, and mode order, as long as a high enough number of measuring points is considered. This study focuses on its application using relatively few measurement points and on the consistency of the DSI. Results from a beam with double-notch damage are analyzed. The results show that the method is applicable with a sparse measurement grid and the DSI Reference values from a static analysis can be referred for damage evaluation using modal displacements. The practical limits of the method are also discussed. |
| Palabras clave |
Beams; Multiple damage; Mode shapes; Wavelet transform; Sparse measurements |
| Miembros de la Universidad Loyola |
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