Table 3.

Bulge test results depending on the models used.

Models	E (GPa)	σ0 (MPa)
Lin [28]	452	41
Beams et al. [27]	380	41
Small et al. [29]	405	41
Pan et al. [30]	413	41
Hohlfelder [31]	400	41
Mean value	410	41