Resonance Frequency as an Indicator of the Damage in Carbon Composite Plates: Analysis on Composites Prepared with Conventional and Sustainable Resins Subjected to Impact Tests.

Polymers (Basel) · 2025 · PMC11768947 · PMID 39861214

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an increasing trendno p-value reported

As shown in Section 3.3 and Section 3.4 , the normalised IET showed a decreasing trend, while the DI showed an increasing trend as the damage progressed.

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a decreasing trendno p-value reported

On the other hand, the f O Mode showed a decreasing trend for both laminates impacted at 5 J and 7 J.

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