The tapping test, illustrated in Figure , evaluated the sensitivity of PLLA films to localized, dynamic impacts. Each film was placed on a PDMS substrate and tapped with a consistent force and speed, mimicking real-world dynamic loading conditions. The results of this test, presented in Figure , reveal that unprocessed films again showed negligible electrical output, with a peak-to-peak voltage of approximately 0.1V (±0.02V) and current output of 0.41 nA (±0.04 na), emphasizing the importance of mechanical processing. Strained films demonstrated a stepwise increase in piezoelectric response, with the 50% strained film generating approximately 0,55V (±0.08V) and 2.1 (±0.12 nA), the 75% strained film producing 1,37 V (±0.14 V) and 6.2 nA (±0.19 nA) , and the 100% strained film achieved 3.52 V (±0.21 V), and 8.19 Na (±0.89 nA). While tapping primarily activates the d33 piezoelectric coefficient, these results highlight that localized shear effects within the material also contribute to measurable piezoelectric outputs.