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doi:10.22028/D291-38311
Titel: | Damage quantification in an aluminium-CFRP composite structure using guided wave wavenumber mapping : Comparison of instantaneous and local wavenumber analyses |
VerfasserIn: | Lugovtsova, Yevgeniya Bulling, Jannis Mesnil, Olivier Prager, Jens Gohlke, Dirk Boller, Christian |
Sprache: | Englisch |
Titel: | NDT & E International |
Bandnummer: | 122 |
Verlag/Plattform: | Elsevier |
Erscheinungsjahr: | 2021 |
Freie Schlagwörter: | Ultrasonic guided waves Instantaneous wavenumber analysis Local wavenumber analysis Signal processing |
DDC-Sachgruppe: | 500 Naturwissenschaften |
Dokumenttyp: | Journalartikel / Zeitschriftenartikel |
Abstract: | Composite-overwrapped pressure vessels (COPV) are increasingly used in the transportation industry due to their high strength to mass ratio. Throughout the years, various designs were developed and found their applications. Currently, there are five designs, which can be subdivided into two main categories - with a load-sharing metal liner and with a non-load-sharing plastic liner. The main damage mechanism defining the lifetime of the first type is fatigue of the metal liner, whereas for the second type it is fatigue of the composite overwrap. Nevertheless, one damage type which may drastically reduce the lifetime of COPV is impact-induced damage. Therefore, this barely visible damage needs to be assessed in a non-destructive way to decide whether the pressure vessel can be further used or has to be put out of service. One of the possible methods is based on ultrasonic waves. In this contribution, both conventional ultrasonic testing (UT) by high-frequency bulk waves and wavenumber mapping by low frequency guided waves are used to evaluate impact damage. Wavenumber mapping techniques are first benchmarked on a simulated aluminium panel then applied to experimental measurements acquired on a delaminated aluminium-CFRP composite plate which corresponds to a structure of COPV with a load-sharing metal liner. The analysis of experimental data obtained from measurements of guided waves propagating in an aluminium-CFRP composite plate with impact-induced damage is performed. All approaches show similar performance in terms of quantification of damage size and depths while being applied to numerical data. The approaches used on the experimental data deliver an accurate estimate of the in-plane size of the large delamination at the aluminium-CFRP interface but only a rough estimate of its depth. Moreover, none of the wavenumber mapping techniques used in the study can quantify every delamination between CFRP plies caused by the impact, which is the case for conventional UT. This may be solved by using higher frequencies (shorter wavelengths) or more advanced signal processing techniques. All in all, it can be concluded that imaging of complex impact damage in fibre-reinforced composites based on wavenumber mapping is not straightforward and stays a challenging task. |
DOI der Erstveröffentlichung: | 10.1016/j.ndteint.2021.102472 |
URL der Erstveröffentlichung: | http://dx.doi.org/10.1016/j.ndteint.2021.102472 |
Link zu diesem Datensatz: | urn:nbn:de:bsz:291--ds-383111 hdl:20.500.11880/34568 http://dx.doi.org/10.22028/D291-38311 |
ISSN: | 0963-8695 |
Datum des Eintrags: | 30-Nov-2022 |
Bezeichnung des in Beziehung stehenden Objekts: | Supplementary material |
In Beziehung stehendes Objekt: | https://github.com/BAMresearch/WavenumberAnalysis |
Fakultät: | NT - Naturwissenschaftlich- Technische Fakultät |
Fachrichtung: | NT - Materialwissenschaft und Werkstofftechnik |
Professur: | NT - Prof. Dr. Christian Boller |
Sammlung: | SciDok - Der Wissenschaftsserver der Universität des Saarlandes |
Dateien zu diesem Datensatz:
Datei | Beschreibung | Größe | Format | |
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1-s2.0-S0963869521000712-main.pdf | 12,5 MB | Adobe PDF | Öffnen/Anzeigen |
Diese Ressource wurde unter folgender Copyright-Bestimmung veröffentlicht: Lizenz von Creative Commons