Parametric optimisation based on TDS experiments for rapid and efficient identification of hydrogen transport materials properties

A novel identification technique of hydrogen transport parameters using FESTIM (Finite Element Simulation Tritium In Materials) has been demonstrated. is a finite element code developed with FEniCS performing simulations. The trapping (detrapping energies and trap densities) are identified for various materials (Tungsten, Aluminium, EUROFER Beryllium) by automatically reproducing thermo-desorption experiments. Several optimisation algorithms tested the Nelder–Mead algorithm shows best efficiency. An test problem five free took only few hours to solve whereas cases two minutes. Limitations this shown discussed. • automated properties presented. Thermo-desorption spectra reproduced. Tungsten, EUROfer, Aluminium Beryllium analysed.