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Article

Guided Waves for Damage Detection in Complex Composite Structures: The Influence of Omega Stringer and Different Reference Damage Size

1
Department of Physics, Goethe University, 60438 Frankfurt, Frankfurt am Main, Germany
2
Department of Mechanical Engineering, University of Siegen, 57076 Siegen, Germany
3
Institute of Composite Structures and Adaptative Systems, Multifunctional Materials, German Aerospace Center (DLR), 38108 Braunschweig, Germany
4
Measurement Systems and Monitoring, Faserinstitut Bremen e.V. (FIBRE), 28359 Bremen, Germany
*
Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(9), 3068; https://doi.org/10.3390/app10093068
Received: 7 April 2020 / Revised: 20 April 2020 / Accepted: 21 April 2020 / Published: 28 April 2020
(This article belongs to the Special Issue Guided Wave-Based Damage Identification for Composite Structures)
The third dataset dedicated to the Open Guided Waves platform aims at carbon fiber composite plates with an additional omega stringer at constant temperature conditions. The two structures used in this work are representative for real aircraft components. Comprehensive measurements were recorded in order to study (I) the impact of the omega stringer on guided wave propagation, and (II) elliptical reference damages of different sizes located at three separate positions on the structure. Measurements were recorded for narrowband excitation (5-cycle toneburst with varying carrier frequencies) and broadband excitation (using chirp waveforms). The paper presents the results of a technical validation including numerical modelling, and enables further research, for example related to probability of detection (POD) analysis. View Full-Text
Keywords: open guided waves; composite structures; omega stringer; reference damage open guided waves; composite structures; omega stringer; reference damage
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MDPI and ACS Style

Moll, J.; Kexel, C.; Kathol, J.; Fritzen, C.-P.; Moix-Bonet, M.; Willberg, C.; Rennoch, M.; Koerdt, M.; Herrmann, A. Guided Waves for Damage Detection in Complex Composite Structures: The Influence of Omega Stringer and Different Reference Damage Size. Appl. Sci. 2020, 10, 3068. https://doi.org/10.3390/app10093068

AMA Style

Moll J, Kexel C, Kathol J, Fritzen C-P, Moix-Bonet M, Willberg C, Rennoch M, Koerdt M, Herrmann A. Guided Waves for Damage Detection in Complex Composite Structures: The Influence of Omega Stringer and Different Reference Damage Size. Applied Sciences. 2020; 10(9):3068. https://doi.org/10.3390/app10093068

Chicago/Turabian Style

Moll, Jochen, Christian Kexel, Jens Kathol, Claus-Peter Fritzen, Maria Moix-Bonet, Christian Willberg, Marcel Rennoch, Michael Koerdt, and Axel Herrmann. 2020. "Guided Waves for Damage Detection in Complex Composite Structures: The Influence of Omega Stringer and Different Reference Damage Size" Applied Sciences 10, no. 9: 3068. https://doi.org/10.3390/app10093068

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