Heinze, Christoph and Duczek, Sascha and Sinapius, Michael and Wierach, Peter (2017) A Minimal Model-Based Approach for the Fast Approximation of Wave Propagation in Complex Structures. Structural Health Monitoring, 16 (5), pp. 568-582. SAGE Publications. doi: 10.1177/1475921717697509. ISSN 1475-9217.
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Official URL: http://journals.sagepub.com/doi/abs/10.1177/1475921717697509
Abstract
Guided wave-based structural health monitoring is a promising technology to continuously monitor aircraft and to identify damage. The simulation of such structures is still a numerically challenging task due to their size and complexity. In this article, a minimal model approach is proposed to allow an approximate but very fast calculation of the wave propagation. The properties being relevant to the propagation of Lamb waves or in general guided waves are determined as part of the preprocessing. These include phase velocities as well as interaction parameters of all discontinuities. The minimal model consists of two steps to calculate a time signal at specific locations. First, a ray tracing algorithm determines suitable wave paths between two points in the reduced model of the structure. Second, wave packets of every incident ray are superimposed to synthesize a time signal. The obtained results are compared with both finite element simulations and experimental measurements.
Item URL in elib: | https://elib.dlr.de/107540/ | |||||||||||||||
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Document Type: | Article | |||||||||||||||
Title: | A Minimal Model-Based Approach for the Fast Approximation of Wave Propagation in Complex Structures | |||||||||||||||
Authors: |
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Date: | 20 March 2017 | |||||||||||||||
Journal or Publication Title: | Structural Health Monitoring | |||||||||||||||
Refereed publication: | Yes | |||||||||||||||
Open Access: | No | |||||||||||||||
Gold Open Access: | No | |||||||||||||||
In SCOPUS: | Yes | |||||||||||||||
In ISI Web of Science: | Yes | |||||||||||||||
Volume: | 16 | |||||||||||||||
DOI : | 10.1177/1475921717697509 | |||||||||||||||
Page Range: | pp. 568-582 | |||||||||||||||
Editors: |
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Publisher: | SAGE Publications | |||||||||||||||
Series Name: | Aerospace Engineering | |||||||||||||||
ISSN: | 1475-9217 | |||||||||||||||
Status: | Published | |||||||||||||||
Keywords: | SHM, Lamb waves, minimal model, model reduction, ray tracing, aerospace | |||||||||||||||
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 (old) | |||||||||||||||
Location: | Hamburg | |||||||||||||||
Institutes and Institutions: | Institute of Composite Structures and Adaptive Systems > Multifunctional Materials | |||||||||||||||
Deposited By: | Heinze, Christoph | |||||||||||||||
Deposited On: | 11 Dec 2017 12:47 | |||||||||||||||
Last Modified: | 11 Dec 2017 15:59 |
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