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Development of a new isogeometric finite element and its application for Lamb wave based structural health monitoring

Willberg, Christian (2013) Development of a new isogeometric finite element and its application for Lamb wave based structural health monitoring. Dissertation.

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Official URL: http://nbn-resolving.de/urn:nbn:de:gbv:ma9:1-3332

Abstract

In this work, a three-dimensional isogeometric piezoelectric finite element is developed, tested in several benchmarks and compared to other numerical higher order approaches with respect to their ability to model Lamb wave propagation problems. The research results are used to recommend an optimal discretization scheme. To illustrate the advantage of the new isogeometric finite element two structural health monitoring (SHM) specific problems are investigated, namely the dynamic behavior of a piezoceramic actuator and the material induced continuous mode conversion. Both problems are studied numerically as well as experimentally. Results, advantages, disadvantages and extensions of the findings are in detail explained and discussed.

Item URL in elib:https://elib.dlr.de/81671/
Document Type:Thesis (Dissertation)
Title:Development of a new isogeometric finite element and its application for Lamb wave based structural health monitoring
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Willberg, ChristianStrukturmechanik - BS-FAUNSPECIFIED
Date:2013
Journal or Publication Title:Fortschritt-Bericht VDI Reihe 20 Nr. 446 ISBN 978-3-18-344620-9
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Number of Pages:137
Status:Published
Keywords:Structural Health Monitoring – Nondestructive Testing – Lamb Waves – Finite Element Method – Isogeometric Analysis – Piezoelectricity – Numerical Simulation
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 - Simulation and Validation
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Structural Mechanics
Deposited By: Willberg, Dr.-Ing. Christian
Deposited On:15 Aug 2013 11:54
Last Modified:27 Sep 2017 07:53

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