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Visualisation of guided wave propagation by ultrasonic imaging methods

Hillger, Wolfgang und Szewieczek, Artur (2011) Visualisation of guided wave propagation by ultrasonic imaging methods. International Journal of Materials and Product Technology, Vol. 41 (No.1/2/3/4 ), Seiten 191-201. Interscience. DOI: 10.1504/IJMPT.2011.040296. ISSN 0268-1900.

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Offizielle URL: http://www.inderscience.com/


Structural health monitoring (SHM) with Lamb waves (LWs) principally enables an in-service damage detection of large aircraft components without time-consuming scanning. Piezoelectric elements can be effectively used as senders and receivers for LWs. However, the complex interaction between defects and Lamb waves – especially for composites, the presence of two wave modes in minimum and its dispersive behaviour and reflections from all structure elements contribute to receiver signals which are very difficult to predict and to evaluate. Ultrasonic imaging technique (UIT) can also be used for the visualisation of LW propagation in composites especially using air-coupled techniques. Out of the recorded full-wave data calculations of Lamb wave A-, B-, C- and D-scans and video animations can be carried out. Examples of visualisation in composites such as monolithic specimens, a stringer stiffened laminate and a sandwich tail boom which impressively show the Lamb wave propagation and also their interaction with defects.

Titel:Visualisation of guided wave propagation by ultrasonic imaging methods
AutorenInstitution oder E-Mail-Adresse der Autoren
Hillger, WolfgangDLR-FA
Szewieczek, ArturDLR-FA
Erschienen in:International Journal of Materials and Product Technology
Referierte Publikation:Ja
In ISI Web of Science:Ja
Band:Vol. 41
DOI :10.1504/IJMPT.2011.040296
Seitenbereich:Seiten 191-201
Stichwörter:Lamb waves; ultrasonic imaging; carbon fibre composites; damage detection; structural health monitoring; SHM; visualisation; guided wave propagation; NDT; nondestructive testing; aircraft components; large components; piezoelectric elements; video animation.
HGF - Forschungsbereich:keine Zuordnung
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HGF - Programmthema:keine Zuordnung
DLR - Schwerpunkt:keine Zuordnung
DLR - Forschungsgebiet:keine Zuordnung
DLR - Teilgebiet (Projekt, Vorhaben):anderes
Standort: Braunschweig
Institute & Einrichtungen:Institut für Faserverbundleichtbau und Adaptronik > Multifunktionswerkstoffe
Hinterlegt von: Wolfgang Hillger
Hinterlegt am:24 Jan 2012 07:50
Letzte Änderung:26 Mär 2013 13:37

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