Szczegóły publikacji
Opis bibliograficzny
Amplitude-dependent contraction/elongation of nonlinear Lamb waves / Paweł PAĆKO, Wiesław J. STASZEWSKI, Tadeusz UHL, Michael J. Leamy // W: Health monitoring of structural and biological systems 2016 : Las Vegas, United States, 20–24 March 2016 / ed. Tribikram Kundu. — [Bellingham : SPIE], cop. 2016. — (Proceedings of SPIE / The International Society for Optical Engineering ; ISSN 0277-786X ; vol. 9805). — ISBN: 978-1-5106-0046-1. — S. 98050K-1–98050K-6. — Bibliogr. s. 98050K-6, Abstr.
Autorzy (4)
- AGHPaćko Paweł
- AGHStaszewski Wiesław Jerzy
- AGHUhl Tadeusz
- Leamy Michael J.
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 99339 |
|---|---|
| Data dodania do BaDAP | 2016-08-09 |
| DOI | 10.1117/12.2219042 |
| Rok publikacji | 2016 |
| Typ publikacji | materiały konferencyjne (aut.) |
| Otwarty dostęp |  |
| Konferencja | Health monitoring of structural and biological systems 2016 |
| Czasopismo/seria | Proceedings of SPIE / The International Society for Optical Engineering |
Abstract
Nonlinear elastic guided waves find application in various disciplines of science and engineering, such as non- destructive testing and structural health monitoring. Recent recognition and quantification of their amplitude- dependent changes in spectral properties has contributed to the development of new monitoring concepts for mechanical structures. The focus of this work is to investigate and predict amplitude-dependent shifts in Lamb wave dispersion curves. The theory for frequency/wavenumber shifts for plate waves, based on a Lindstedt-Poincaré perturbation approach, was presented by the authors in previous years. Equivalently, spectral properties changes can be seen as wavelength contraction/elongation. Within the proposed framework, the wavelength of a Lamb wave depends on several factors; e.g., wave amplitude and second-, third- and fourth-order elastic constants, and others. Various types of nonlinear effects are considered in presented studies. Sensitivity studies for model parameters, i.e. higher-order elastic constants, are performed to quantify their influence on Lamb wave frequency/wavenumber shifting, and to identify the key parameters governing wavelength tuning.
