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

Mohsen Bazargan, Bjarne S. G. Almqvist, Hem Bahadur Motra, Pooyan Broumand, Tobias Schmiedel and Christoph F. Hieronymus
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Mohsen Bazargan: Department of Earth Sciences, Uppsala University, Villavägen 16, 752 36 Uppsala, Sweden
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

Resources, 2022, vol. 11, issue 5, 1-14

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.

Keywords: stainless steel standard; ultrasonic wave; finite element modeling; dynamic wave propagation (search for similar items in EconPapers)
JEL-codes: Q1 Q2 Q3 Q4 Q5 (search for similar items in EconPapers)
Date: 2022
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