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02991nam a2200445Ia 4500 |
| 001 |
10.1016-j.ultras.2022.106746 |
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220510s2022 CNT 000 0 und d |
| 020 |
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|a 0041624X (ISSN)
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| 245 |
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|a Spectral element modeling of ultrasonic guided wave propagation in optical fibers
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| 260 |
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|b Elsevier B.V.
|c 2022
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| 856 |
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|z View Fulltext in Publisher
|u https://doi.org/10.1016/j.ultras.2022.106746
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|a Recent advancements in fiber optic methods have enabled their use for guided wave sensing. It opens up new possibilities for Structural Health Monitoring. The aim of this paper is to provide insight for the physics related to guided wave propagation and coupling between the optical fiber and solid structure. For this purpose, a new approach for non-matching interface based on Lagrange multipliers and the time domain spectral element method was developed. A parallelized code has been implemented in order to simulate the guided wave propagation in the structure, its coupling into the optical fiber and the propagation in the fiber in a computationally efficient way. The paper presents four studies showing the efficacy of the modeling approach. The paper first shows the improvement in the computation speed through the use of parallelization and a more efficient implementation. Then the results of the simulation of wave propagation in the fiber are compared with results from previous simulation studies using commercially available software. The third study shows that the spectral element method is able to capture the directional sensitivity of optical fiber based sensors. Lastly, the simulation is used for detection of simulated damage using the spectral element method based simulation. The results indicate that indeed the spectral element implementation is able to recreate the wave coupling phenomena, capture the physics of the system including directional sensitivity and reflections from damage. © 2022 The Authors
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|a Computer software
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|a Damage detection
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|a Directional sensitivity
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|a Fiber Bragg grating (FBG) sensors
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|a Fiber Bragg Grating Sensors
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|a Fiber Bragg gratings
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|a GPU
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|a Graphics processing unit
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|a Guide wave
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|a Guide waves (GW)
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|a Guided electromagnetic wave propagation
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|a Guided-wave propagation
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|a Lagrange multipliers
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|a Parallel implementation
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|a Parallel implementations
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| 650 |
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|a Spectral element method
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|a Spectral element method (SEM)
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|a Spectral element model
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|a Structural health monitoring
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|a Time domain analysis
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|a Ultrasonic applications
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|a Ultrasonic guided wave
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|a Wave coupling
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| 700 |
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|a Fiborek, P.
|e author
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1 |
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|a Kudela, P.
|e author
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|a Ostachowicz, W.
|e author
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|a Soman, R.
|e author
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| 773 |
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|t Ultrasonics
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