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Fast Full Wave Simulation of Ultrasonic Pulse-Echo Testing by Iterative Coupling of Analytical and Numerical Methods
Technical Paper
2018-01-1470
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The pulse-echo method of non-destructive ultrasonic material testing is modeled by an iterative coupling scheme combining analytical and numerical methods in different domains. The approach offers significant advantages in terms of computational efficiency compared to volumetric mesh-based numerical models if the distance between transducer and specimen is large compared to the wavelength in the coupling medium. Excitation and results are given in the time domain while computations are performed in the frequency domain and are compatible with usual FEM solvers for linear elasticity. Due to the use of interpolated phase-shifted transfer functions only a small number of frequency lines is required in comparison to a direct Fourier transform of signals. The method is illustrated alongside a typical application on a steel structure embedded in water.
Authors
Citation
Albert, C., Bauer, P., and von der Linden, W., "Fast Full Wave Simulation of Ultrasonic Pulse-Echo Testing by Iterative Coupling of Analytical and Numerical Methods," SAE Technical Paper 2018-01-1470, 2018, https://doi.org/10.4271/2018-01-1470.Also In
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