Derivation of temperature dependent mechanical properties of polymer foam core materials using optical extensometryJ.M. Dulieu-Barton, C. Boyenval Langlois, O.T. Thomsen, S. Zhang and R.K. FruehmannEPJ Web of Conferences, 6 (2010) 38004DOI: https://doi.org/10.1051/epjconf/20100638004