Data Set on Granite Weakening by Alternating Voltage Excitation: 2D Numerical Analysis Using Cohesive Interface Elements and a Fatigue Damage Model

This dataset supports the publication [1]. It contains experimental and numerical data used in the development and validation of the 2D mesoscale finite element model presented in [1], which investigates the progressive weakening of granite under high-voltage alternating current (HV-AC) excitation. Contents Experimental data from nanoindentation, dynamic tension tests, dynamic Brazilian Disc (BD) tests, and quasi-static compression experiments. Synchrotron X-ray Phase-Contrast Imaging (XPCI) videos showing the fragmentation process in granite discs under dynamic tension. Numerical simulations corresponding to all test conditions, including cohesive interface modelling to modell the progressive weakening of the rock. Synthetic microstructures (.mat files and HTML summaries) representing the granite’s grain-scale structure. MATLAB scripts to regenerate all plots, figures, and animations included in [1]. Folder Overview /SPHB_BD_test_on_untreated_samples: Raw FEM results for untreated granite under dynamic tensile loading. /SPHB_BD_test_on_AC_treated_samples: Raw FEM results for HV-AC treated specimens. /dynamic_tension: Experimental–numerical comparisons, including: MATLAB .fig files with numerical simulation and experimental results, Animations of the simulated and experimentally captured fragmentation process in .gif and .avi formats, and The script ploting_curves.m to regenerate all visual content. /EXP_FIGURES: Experimental results from dynamic Brazilian Disc tests, including high-resolution XPCI videos of real crack propagation. /fatigue: Fatigue model validation plots, and supporting script all_SN_PLOTER.m. /microstructures: Synthetic microstructure data files used in the mesoscale simulations. /nanoindentations: Nanoindentation results used to estimate the mechanical properties of granite phases. /quasistatic_compression: Experimental and numerical results from low strain-rate compression tests. Usage Requirements MATLAB (recommended version: R2021a or later). Key scripts: ploting_curves.m, all_SN_PLOTER.m. NoteThis dataset complements the results presented in [1]. It is not standalone and must be used alongside the publication for full understanding of the modelling approach, experimental procedures, and interpretation of the data. References [1] A. Rubio et al., “Weakening of granite by alternating voltage excitation of dispersed quartz: A 2D numerical analysis based on cohesive interface elements with a fatigue damage model,” International Journal of Impact Engineering, 2025.