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Lamb Wave Propagation in Complex Geometries - Model Reduction with Approximated Stiffeners

Heinze, Christoph and Sinapius, Michael and Wierach, Peter (2014) Lamb Wave Propagation in Complex Geometries - Model Reduction with Approximated Stiffeners. In: 7th European Workshop on Structural Health Monitoring, pp. 1655-1661. EWSHM 2014, 08.-11. Jul. 2014, Nantes, Frankreich.

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Abstract

Aviation companies show great interest in Structural Health Monitoring (SHM) systems. Although noticeable effort has been put into this research field, so far no system is ready for industrial use. One of the major issues is the processing of complex signals caused by complex aerospace structures. Numerical simulations can help to comprehend these signals, but are often unable to cope with the model detail required. A ray tracing algorithm to approximate Lamb wave propagation is proposed, which enables a huge model reduction. The resulting minimal model mainly consists of the border lines of areas with different geometrical or material properties. Finite element simulations are used to determine the interaction behavior of these transition zones. A two stage concept is used to find paths from an actuator to a sensor and calculate time signals.

Item URL in elib:https://elib.dlr.de/90323/
Document Type:Conference or Workshop Item (Speech)
Title:Lamb Wave Propagation in Complex Geometries - Model Reduction with Approximated Stiffeners
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Heinze, ChristophChristoph.Heinze (at) dlr.deUNSPECIFIED
Sinapius, MichaelTU Braunschweig / DLR BraunschweigUNSPECIFIED
Wierach, PeterFA-MFWUNSPECIFIED
Date:8 July 2014
Journal or Publication Title:7th European Workshop on Structural Health Monitoring
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 1655-1661
Status:Published
Keywords:SHM, Lamb waves, minimal model, ray tracing, anisotropic material
Event Title:EWSHM 2014
Event Location:Nantes, Frankreich
Event Type:international Conference
Event Dates:08.-11. Jul. 2014
Organizer:Inria-IFSTTAR-UnivNantes
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures and Materials
Location: Hamburg
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Multifunctional Materials
Deposited By: Heinze, Christoph
Deposited On:01 Sep 2014 09:32
Last Modified:31 Jul 2019 19:47

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