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Elastic Wave Propagation in a Stainless-Steel Standard and Verification of a COMSOL Multiphysics Numerical Elastic Wave Toolbox

Author

Listed:
  • Mohsen Bazargan

    (Department of Earth Sciences, Uppsala University, Villavägen 16, 752 36 Uppsala, Sweden
    Rock Engineering, Geosigma Part of Rejlers, Sankt Eriksgatan 113, 113 43 Stockholm, Sweden
    WSL Institute for Snow and Avalanche Research SLF, 7260 Davos Dorf, Switzerland)

  • Bjarne S. G. Almqvist

    (Department of Earth Sciences, Uppsala University, Villavägen 16, 752 36 Uppsala, Sweden)

  • Hem Bahadur Motra

    (Institute for Geosciences, Christian Albert University of Kiel, 24118 Kiel, Germany)

  • Pooyan Broumand

    (Department of Civil and Environmental Engineering, Shiraz University, Shiraz 1585-71345, Iran)

  • Tobias Schmiedel

    (Department of Earth Sciences, Uppsala University, Villavägen 16, 752 36 Uppsala, Sweden)

  • Christoph F. Hieronymus

    (Department of Earth Sciences, Uppsala University, Villavägen 16, 752 36 Uppsala, Sweden)

Abstract

Laboratory-based elastic wave measurements are commonly used to quantify the seismic properties of Earth’s crust and upper mantle. Different types of laboratory apparatuses are available for such measurements, simulating seismic properties at different pressure and temperature. To complement such laboratory measurements, we present a numerical toolbox to investigate the seismic properties of rock samples. The numerical model is benchmarked against experimental results from a multi-anvil apparatus, using measurements of a stainless steel calibration standard. Measured values of the mean compressional- and shear-wave velocities at room conditions of the steel block were 6.03 km/s and 3.26 km/s, respectively. Calculated numerical results predicted 6.12 km/s and 3.30 km/s for compressional and shear-wave velocities. Subsequently, we measured Vp and Vs up to 600 MPa hydrostatic confining pressure and 600 °C. These measurements, at pressure and temperature, were then used as the basis to predict numerical wave speeds. There is, in general, good agreement between measurement and predicted numerical results. The numerical method presented in this study serves as a flexible toolbox, allowing for the easy setup of different model geometries and composite materials.

Suggested Citation

  • Mohsen Bazargan & Bjarne S. G. Almqvist & Hem Bahadur Motra & Pooyan Broumand & Tobias Schmiedel & Christoph F. Hieronymus, 2022. "Elastic Wave Propagation in a Stainless-Steel Standard and Verification of a COMSOL Multiphysics Numerical Elastic Wave Toolbox," Resources, MDPI, vol. 11(5), pages 1-14, May.
    • Handle: RePEc:gam:jresou:v:11:y:2022:i:5:p:49-:d:817097
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