An analysis is done of the crossing of a forbidden region in a thin plate by a backward propagating Lamb wave: the refraction/reflection effects undergone by the coupled modes produced at each boundary of the forbidden region are taken into consideration, as well as the penetration of the backward wave as an evanescent wave. The outcome of the acoustic perturbation is analysed for a few angles of incidence and experiments are performed that confirm the theoretical predictions.

Anomalous propagation characteristics of evanescent waves / Alippi, Adriano; Bettucci, Andrea; Germano, Massimo. - In: ULTRASONICS. - ISSN 0041-624X. - 38:(2000), pp. 817-820. [10.1016/S0041-624X(99)00034-7]

Anomalous propagation characteristics of evanescent waves

ALIPPI, Adriano;BETTUCCI, Andrea;GERMANO, Massimo
2000

Abstract

An analysis is done of the crossing of a forbidden region in a thin plate by a backward propagating Lamb wave: the refraction/reflection effects undergone by the coupled modes produced at each boundary of the forbidden region are taken into consideration, as well as the penetration of the backward wave as an evanescent wave. The outcome of the acoustic perturbation is analysed for a few angles of incidence and experiments are performed that confirm the theoretical predictions.
TRAVERSAL TIME; Evanescent waves
01 Pubblicazione su rivista::01a Articolo in rivista
Anomalous propagation characteristics of evanescent waves / Alippi, Adriano; Bettucci, Andrea; Germano, Massimo. - In: ULTRASONICS. - ISSN 0041-624X. - 38:(2000), pp. 817-820. [10.1016/S0041-624X(99)00034-7]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/255384
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