Data type: Raw data from measurements or recordings (2023)
Keywords: Human brain tissue; Hyperelastic; Compression; Tension; Torsional shear
Availability: Public
Licence: Creative Commons Attribution 4.0 International
This dataset contains experimental data from the mechanical testing of human brain specimens. The data have been filtered (moving average and linear interpolation) and the load/unload curves averaged to approximate the hyperelastic material response for infinitely slow strain rates. Every specimen folder contains data for the three loading modes tested: cyclic compression/tension up to 15% strain as well as cyclic torsional shear experiments up to an amount of shear of 0.15 (l1) and 0.3 (l2), respectively. Furthermore, there are separate files for the first cycle (c1) and the third cycle (c3). The files for the compression/tension mode columns contain displacement [m] and normal force [N] while the torsional shear mode columns contain angular displacement [rad] and torque [Nm]. The data are also split into negative (_neg) and positive (_pos) parts for the torsional shear. The specimens are named HBE__ and their brain region can be looked up in the sample_lookup.xlsx file. The specimens were cylindrical with a diameter of ~8mm. Their height was determined from the test data and is stored in the geometry.yaml file (measurements given in m) located in each specimen's directory. Further explanation regarding the specimen preparation, experimental setup as well as the assignment of regions and governing regions can be found in Hinrichsen, J., Reiter, N., Bräuer, L. et al. Inverse identification of region-specific hyperelastic material parameters for human brain tissue. Biomech Model Mechanobiol (2023). https://doi.org/10.1007/s10237-023-01739-w.