A time-domain spectral finite element method for acoustoelasticity: Modeling the effect of mechanical loading on guided wave propagation

Dalmora, André; Imperiale, Alexandre; Imperiale, Sebastien; Moireau, Philippe

doi:10.1016/j.wavemoti.2024.103328

Wave Motion

2024

DOI: 10.1016/j.wavemoti.2024.103328

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A time-domain spectral finite element method for acoustoelasticity: Modeling the effect of mechanical loading on guided wave propagation

André Dalmora,

Alexandre Imperiale,

Sebastien Imperiale

et al.

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2024

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Kalman-based estimation of loading conditions from ultrasonic guided wave measurements

Dalmora,

Imperiale,

Imperiale

et al. 2024

Inverse Problems

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Ultrasonic guided wave-based Structural Health Monitoring (SHM) of structures can be perturbed by Environmental and Operations Conditions (EOCs) that alter wave propagation. In this work, we present an estimation procedure to reconstruct an EOC-free baseline of the structure suitable for SHM from the only available Ultrasonic guided wave measurements. Our approach is model-based, \textit{i.e.} we use a precise modeling of the wave propagation altered by structure loading conditions. This model is coupled with the acquired data through a data assimilation procedure to estimate the deformation caused by the unknown loading conditions. From a methodological point of view, our approach is original since we have proposed an iterated Reduced-Order Unscented Kalman strategy, which we justify as an alternative to a Levenberg-Marquardt strategy for minimizing the non quadratic least-squares estimation criteria. Therefore, from a data assimilation perspective, we provide a quasi-sequential strategy that can valuably replace more classical variational approaches. Indeed, our resulting algorithm proves to be computationally very effective, allowing us to successfully apply our strategy to realistic 3D industrial SHM configurations.

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Kalman-based estimation of loading conditions from ultrasonic guided wave measurements

Dalmora,

Imperiale,

Imperiale

et al. 2024

Inverse Problems

View full text Add to dashboard Cite

show abstract

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A time-domain spectral finite element method for acoustoelasticity: Modeling the effect of mechanical loading on guided wave propagation

Cited by 1 publication

References 62 publications

Kalman-based estimation of loading conditions from ultrasonic guided wave measurements

Kalman-based estimation of loading conditions from ultrasonic guided wave measurements

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