Ultrasonic waves can be used to point out damages and defects in structural components. In fact, a guided wave injected into the specimen under investigation produces a reflected wave when it encounters damage along its propagation path. The analysis of the reflected waves allows determining the existence and localization of damage. This work presents a technique based on the Complex Wavelet Transform for the analysis of full wavefield data, which provides removal of non-informative components (incident wave, contributions from structural features) and exclusive reconstruction of reflected waves relevant to damage detection.
M. Nanni, L. De Marchi, E. Baravelli, N. Speciale (2012). Multidimensional complex wavelet transforms for guided waves directional filtering. NEW YORK : AIP American Institute of Physics [10.1063/1.3703227].
Multidimensional complex wavelet transforms for guided waves directional filtering
DE MARCHI, LUCA;BARAVELLI, EMANUELE;SPECIALE, NICOLO'ATTILIO
2012
Abstract
Ultrasonic waves can be used to point out damages and defects in structural components. In fact, a guided wave injected into the specimen under investigation produces a reflected wave when it encounters damage along its propagation path. The analysis of the reflected waves allows determining the existence and localization of damage. This work presents a technique based on the Complex Wavelet Transform for the analysis of full wavefield data, which provides removal of non-informative components (incident wave, contributions from structural features) and exclusive reconstruction of reflected waves relevant to damage detection.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
