Long-range impact localization with a frequency domain triangulation technique: Application to a large aircraft composite panel
| Autor: | Dimitri Goutaudier, Didier Gendre, Roger Ohayon, Véronique Kehr-Candille |
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| Přispěvatelé: | DMAS, ONERA, Université Paris Saclay (COmUE) [Châtillon], ONERA-Université Paris Saclay (COmUE), Airbus Operation S.A.S., Airbus [France], Laboratoire de Mécanique des Structures et des Systèmes Couplés (LMSSC), Conservatoire National des Arts et Métiers [CNAM] (CNAM) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Computer science
Acoustics Modal analysis 02 engineering and technology IMPACT LOCALIZATION Accelerometer VIBRATION ANALYSIS CONTROLE SANTE [SPI]Engineering Sciences [physics] Time of arrival 0203 mechanical engineering Normal mode ANALYSE VIBRATOIRE Range (statistics) [CHIM]Chemical Sciences Civil and Structural Engineering [PHYS]Physics [physics] Triangulation (social science) PANNEAU COMPOSITE 021001 nanoscience & nanotechnology COMPOSITE PANEL 020303 mechanical engineering & transports Modal Frequency domain Ceramics and Composites LOCALISATION D'IMPACT 0210 nano-technology STRUCTURAL HEALTH MONITORING |
| Zdroj: | Composite Structures Composite Structures, Elsevier, 2020, 238 (111973), pp.1-9. ⟨10.1016/j.compstruct.2020.111973⟩ |
| ISSN: | 0263-8223 |
| DOI: | 10.1016/j.compstruct.2020.111973⟩ |
| Popis: | International audience; Classical triangulation techniques determine the impact point by capturing the Time of Arrival (TOA) delays of some elastic waves at different sensor locations. This paper presents an impact localization technique that exploits the low frequency content of the global vibration response. A modal signature of the impact location is described instead of a time signature based on the TOAs. The proposed approach uses the simple idea that the vibration modes of a structure are not excited in the same proportions depending on impact location. The proposed method is applied to a large aircraft composite panel equipped with a sparse distribution of accelerometers. An experimental modal analysis was performed prior to the impact tests to identify the first low frequency vibration modes of the structure within 10-50Hz. The results of the study show that the technique succesfully localizes impacts applied at any location on the panel. |
| Databáze: | OpenAIRE |
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