Table 5. Tensile Stress–Strain of Pure PVDF and Ba_0.7Sr_0.3TiO₃/PVDF Composite Fibers.

material	axial force (kgf)	ultimate tensile load (N)	ultimate stress (MPa)	Young’s modulus (GPa)
Ba0.7Sr0.3TiO3/PVDF = 25/75	606 × 10–4	593.80 × 10–3	59.62	2.54
Ba0.7Sr0.3TiO3/PVDF = 30/75	625 × 10–4	612.50 × 10–3	61.01	2.71
Ba0.7Sr0.3TiO3/PVDF = 35/65	723 × 10–4	708.50 × 10–3	70.45	2.92
Ba0.7Sr0.3TiO3/PVDF = 40/60	748 × 10–4	733.10 × 10–3	73.33	3.53
Ba0.7Sr0.3TiO3/PVDF = 45/55	749 × 10–4	734.10 × 10–3	73.45	3.73
Ba0.7Sr0.3TiO3/PVDF = 50/50	737 × 10–4	722.30 × 10–3	74.92	3.74