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Sensitivity of Ultrasonic Guided Waves to Elastic Constants: A Numerical Study
- The dispersive properties of Lamb waves can be utilised for material characterisation because the frequency-wavenumber-relationship, as well as the group velocity, depend on material parameters. These dependencies make a non-destructive estimation of an elastic constant possible. This preliminary study investigates the sensitivity of dispersion curves caused by a change in elastic constants. The Scaled Boundary Finite Element Method is used to compute special dispersion curves, which show the sensitivity value of the frequency and group velocity as a colour value. This representation allows for easy identification of patterns and local effects. Two sets of dispersion curves are presented, one set for a steel plate and the other set for a plate made of a carbon fibre reinforced polymer. In general, we notice that the sensitivity often increases with the frequency and that higher-order modes seem to be more suitable for material characterisation. Moreover, specific modes respond toThe dispersive properties of Lamb waves can be utilised for material characterisation because the frequency-wavenumber-relationship, as well as the group velocity, depend on material parameters. These dependencies make a non-destructive estimation of an elastic constant possible. This preliminary study investigates the sensitivity of dispersion curves caused by a change in elastic constants. The Scaled Boundary Finite Element Method is used to compute special dispersion curves, which show the sensitivity value of the frequency and group velocity as a colour value. This representation allows for easy identification of patterns and local effects. Two sets of dispersion curves are presented, one set for a steel plate and the other set for a plate made of a carbon fibre reinforced polymer. In general, we notice that the sensitivity often increases with the frequency and that higher-order modes seem to be more suitable for material characterisation. Moreover, specific modes respond to material changes while others are relatively unaffected, which must be taken into consideration for material characterisation.…
Autor*innen: | Jannis BullingORCiD, Georg Franosch, Yevgeniya LugovtsovaORCiD, Jens PragerORCiD |
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Persönliche Herausgeber*innen: | P. Rizzo, A. Milazzo |
Dokumenttyp: | Beitrag zu einem Tagungsband |
Veröffentlichungsform: | Graue Literatur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | Lecture Notes in Civil Engineering |
Jahr der Erstveröffentlichung: | 2021 |
Organisationseinheit der BAM: | 8 Zerstörungsfreie Prüfung |
8 Zerstörungsfreie Prüfung / 8.4 Akustische und elektromagnetische Verfahren | |
Verlag: | Springer |
Verlagsort: | Cham |
Jahrgang/Band: | 127 |
Erste Seite: | 759 |
Letzte Seite: | 768 |
DDC-Klassifikation: | Naturwissenschaften und Mathematik / Physik |
Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurwissenschaften und zugeordnete Tätigkeiten | |
Freie Schlagwörter: | Carbon fibre reinforced polymer; Dispersion curves; Lamb waves; Scaled Boundary Finite Element Method; Transverse isotropy |
Themenfelder/Aktivitätsfelder der BAM: | Chemie und Prozesstechnik |
Material | |
Veranstaltung: | European Workshop on Structural Health Monitoring (EWSHM 2020) |
Veranstaltungsort: | Online meeting |
Beginndatum der Veranstaltung: | 06.07.2020 |
Enddatum der Veranstaltung: | 09.07.2020 |
DOI: | 10.1007/978-3-030-64594-6_73 |
ISBN: | 978-3-030-64593-9 |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 13.01.2021 |
Referierte Publikation: | Nein |