Experimental Data on Non-Oriented Electrical Steel Sheets Magnetic Characteristics under Mechanical Loading

This dataset presents a comprehensive collection of experimental measurements on the magnetic properties of non-oriented grain (NOG) electrical steel sheets subjected to mechanical stress. The experiments were conducted using a custom-designed magneto-mechanical test bench developed at the Electromagnetic Device Design and Analysis Group (GRUCAD), within the Electrical Engineering Department of the Federal University of Santa Catarina (UFSC), Florianópolis, Brazil.

The test bench is a modified Single Sheet Tester (SST) capable of simultaneously applying uniaxial mechanical stress and controlled magnetic flux to the samples. It includes a Mecmesin® universal testing machine for tensile and compressive loads from 5 to 20 MPa, H-coil sensors for direct magnetic field measurement, and a National Instruments® NI-6212 acquisition system operated via LabVIEW.

Three iron–silicon (Fe-Si) samples were evaluated, cut at orientations of 0° (RD), 45° (DD), and 90° (TD) relative to the rolling direction. Tests were performed under constant stresses with sinusoidal magnetic induction ranging from 0.05 T to 1.5 T (peak), at 1 Hz, 50 Hz, and 100 Hz. The dataset includes BH loops and magnetic loss data for both tensile and compressive conditions.

The Magneto-mechanical_Coupling_Data dataset is structured into three main folders (RD_Sample, DD_Sample, TD_Sample), each divided by frequency (1 Hz, 50 Hz and 100 Hz). Within each frequency folder, two categories are provided:

- BH_loop folders: instantaneous magnetic induction and field data.
- loss_curve folders: magnetic loss values.

BH_loop folders are subdivided into nine stress conditions, identified by prefixes T (tensile) and C (compressive) followed by stress in MPa. For instance, RD_Sample/1Hz/BH_loop/T5MPa contains 5 MPa tensile data. Each BH loop file is a CSV with 10,000 time-series points per cycle: first column is magnetic field strength Hextrap(t) and second column is magnetic induction B(t). File names are standardized (e.g., Bp_150mT_1Hz_H-EXTRAPvsB.csv).

Similarly, loss_curve folders contain nine CSV files, each reporting magnetic losses (J/kg) as a function of peak induction. File names are descriptive, such as RD_Losses_0MPa_1Hz.csv.

This hierarchical structure enables efficient data retrieval by orientation, frequency, and stress. The dataset supports research on magneto-mechanical coupling and the development of predictive models of BH loops and magnetic losses in ferromagnetic materials.

Additionally, a Jupyter Notebook is provided, integrating text, figures, and Python code to facilitate the interactive exploration of the dataset. The notebook also incorporates all relevant metadata necessary for a thorough understanding of the system, including schematic representations of the experimental setup and detailed documentation of the experimental methodology.