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Damage detection and localization using Lamb waves in highly anisotropic structures with multiple curvatures

Raddatz, Florian and Hillger, Wolfgang and Szewieczek, Artur (2013) Damage detection and localization using Lamb waves in highly anisotropic structures with multiple curvatures. In: Proceedings of the International Workshop on Structural Health Monitoring 2013. International Workshop on Structural Health Monitoring 2013, 10.-12. September 2013, Stanford. (Submitted)

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Abstract

For the development of structural health monitoring (SHM) systems and non-destructive testing methods based on Lamb waves it is very important, to detect and visualize the entire wave field in the structure. This is currently the only way to reliably determine the source of the waves detected at SHM sensors and to trace their propagation paths in complex structures. During the past years non-contact methods using air-coupled ultrasonic sensors were successfully developed at the DLR to visualize Lamb waves [31]. However, on the way from laboratory applications towards a practical use of SHM systems using Lamb waves there are still many more obstacles to overcome. This paper addresses the special challenges, that arise for the detection and evaluation of wave fields due to the shape and the material properties of real fiber reinforced structures compared to standard flat plates used in the laboratories. An optical measurement platform and a special reconstruction algorithm for damage localization are presented. The measurement system and the algorithms are especially focused on applications for large, curved structures like airframe components and wind turbine rotor blades.

Item URL in elib:https://elib.dlr.de/82315/
Document Type:Conference or Workshop Item (Speech)
Title:Damage detection and localization using Lamb waves in highly anisotropic structures with multiple curvatures
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Raddatz, FlorianFlorian.Raddatz (at) dlr.deUNSPECIFIED
Hillger, Wolfganginfo (at) dr-hillger.deUNSPECIFIED
Szewieczek, ArturArtur.Szewieczek (at) dlr.deUNSPECIFIED
Date:September 2013
Journal or Publication Title:Proceedings of the International Workshop on Structural Health Monitoring 2013
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Submitted
Keywords:structural health monitoring, lamb waves, vibrometry, SAFT
Event Title:International Workshop on Structural Health Monitoring 2013
Event Location:Stanford
Event Type:international Conference
Event Dates:10.-12. September 2013
HGF - Research field:other
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:no assignment
DLR - Program:no assignment
DLR - Research theme (Project):no assignment
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Multifunctional Materials
Deposited By: Raddatz, Dr.-Ing. Florian
Deposited On:04 Nov 2013 08:30
Last Modified:08 May 2014 23:24

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