Szczegóły publikacji
Opis bibliograficzny
Nonlinear vibro-acoustic interactions for crack detection in beams / Dariusz BRODA, Łukasz PIECZONKA, Vikrant Hiwarkar, Wiesław J. STASZEWSKI, Vadim V. Silberschmidt // W: Structural health monitoring 2015 : system reliability for verification and implementation : proceedings of the tenth international workshop on structural health monitoring : September 1–3, 2015 : [Stanford, USA] / ed. by Fu-Kuo Chang, Fotis Kopsaftopoulos. — [USA : DEStech Publications], [2015]. — ISBN: 978-1-60595-275-8. — S. 1443–1450. — Bibliogr. s. 1450, Abstr.
Autorzy (5)
- AGHBroda Dariusz
- AGHPieczonka Łukasz
- Hiwarkar Vikrant
- AGHStaszewski Wiesław Jerzy
- Silberschmidt Vadim V.
Dane bibliometryczne
| ID BaDAP | 94134 |
|---|---|
| Data dodania do BaDAP | 2015-11-12 |
| Rok publikacji | 2015 |
| Typ publikacji | materiały konferencyjne (aut.) |
| Otwarty dostęp |  |
| Konferencja | Structural health monitoring 2015 : system reliability for verification and implementation : proceedings of the tenth International Workshop on Structural Health Monitoring |
Abstract
Recent years have shown a growing interest in damage detection methods based on damage-related nonlinearities in structures. In the paper, the numerical simulations of two techniques - classical Higher Harmonic generation and Vibro-Acoustic Modulation - are presented and validated experimentally. Two-dimensional models of beam with non-propagating cracks are investigated. The focus is on bi-linear breathing crack behavior, which was modeled as a contact between crack faces. This phenomenon is known as crack breathing. Numerical simulation results show that nonlinear phenomena investigated are particularly strong in the vicinity of the crack. A number of aluminum beam specimens with different crack lengths and locations are investigated experimentally to validate numerical simulations. Signal responses were measured at several positions using piezoceramic sensors. The results show that nonlinear phenomena investigated depend not only on excitation amplitude - as expected - but also on crack position, sensor location and boundary conditions.
