Dataset for Hyperelastic Material Parameter Identification of a Polymer Using the Virtual Fields Method and Uniaxial Tensile Tests

This dataset contains experimental data describing the mechanical behavior of a polymer material under non-homogeneous deformation. The study focuses on the identification of hyperelastic material parameters for the material in its as-received state. The dataset consists of five individual files: TPS_2.hdf5 – This file contains the results of the Digital Image Correlation (DIC) analysis of a T-shaped specimen subjected to deformation. The detailed structure of the HDF5 file is described at the following link: https://thermocorr.ippt.pan.pl/output-file-structure.html force_vfm.csv – This file contains the force values measured during the test, synchronized with the DIC results. These data are used in the Virtual Fields Method (VFM) identification procedure. e1.npz, e2.npz, and e3.npz – These files contain stress–strain data obtained from individual uniaxial tensile tests of the investigated polymer. The dataset enables reproduction of the material parameter identification procedure and comparison between heterogeneous-field identification (VFM) and classical uniaxial testing results.