Abstract
A system model is presented for the computation of ultrasonic scattering experiments. It includes a two-dimensional transducer model, whose diffraction field is given as an elastic plane wave spectral decomposition. An electromechanical reciprocity theorem is used to calculate the voltage at the terminal of the receiver. As a flaw-model, we use a strip-like crack, whose scattered field is calculated by the elastodynamic Huygens principle including mode conversion effects. Results in the time domain are presented for LLT- and 45° -tandem inspection situations and compared with measurements. Agreement between the model predictions and experimental results is typical to within 2 dB for average scan amplitudes.
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Schuhmacher, S., Zanger, P. & Langenberg, K.J. A system model to predict the results of ultrasonic scattering experiments. J Nondestruct Eval 13, 147–154 (1994). https://doi.org/10.1007/BF00728252
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DOI: https://doi.org/10.1007/BF00728252