Szczegóły publikacji
Opis bibliograficzny
Robust polarization filter for separation of Lamb wave modes acquired using a 3D laser vibrometer / Łukasz AMBROZIŃSKI, Tadeusz STEPINSKI // Mechanical Systems and Signal Processing ; ISSN 0888-3270. — 2017 — vol. 93, s. 368–378. — Bibliogr. s. 378, Abstr. — Publikacja dostępna online od: 2017-02-23
Autorzy (2)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 104848 |
|---|---|
| Data dodania do BaDAP | 2017-04-25 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.ymssp.2017.02.002 |
| Rok publikacji | 2017 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Mechanical Systems and Signal Processing |
Abstract
Interpretation of signals related to Lamb waves propagation and scattering can rise serious difficulties due to the multi-modal nature of these waves. Different modes propagating with different velocities can be mixed up and hinder extraction of damage reflected components. As a feasible solution to this problem we propose a technique for separation of the propagating modes using a new type of polarization filter. The proposed directional polarization filter (DPF) can be applied if two components of particle movement, the in-plane and the out-of-plane, are available, for instance, from the measurement performed using laser vibrometer. The DPF is robust in the sense that it does not need a complete amplitude information of both components. Operation principle of the DPF is presented and illustrated by the simulated results in the form of B-scans obtained for an aluminum plate. The simulated results are verified by the experimental data obtained by processing the signals captured using a 3D laser vibrometer. © 2017 Elsevier Ltd
