In this work, the evaluation of damaged areas due to low velocity impact tests at different impact energy values on Carbon Fibre (CF) laminates with 3D fabric, made by infusion technology and reinforced with epoxy resin, were investigated by NDI (Non-destructive Investigation) technique based on speckle interferometry. Composites are characterized by several interacting failure modes such as matrix breakage, fibre failure and delaminations, which can be simultaneously induced by low velocity impacts. It can be very difficult to detect by visual inspections of the structures such phenomena. The aim of this study is to evaluate the damaged area due to an impact event. CF composite laminates were impact damaged with four energy levels (5, 10, 20, 30J) at room temperature, by drop weight impact machine. The results showed that ESPI technique was able to identify barely visible low-velocity impact damages.
Damage evaluation on 3Dimensional Carbon Fibre laminates by speckle interferometry / Pagliarulo, V.; Ferraro, P.; Ricciardi, M. R.; Antonucci, V.; Papa, I.; Lopresto, V.. - (2020), pp. 346-350. (Intervento presentato al convegno 7th IEEE International Workshop on Metrology for AeroSpace, MetroAeroSpace 2020 tenutosi a ita nel 2020) [10.1109/MetroAeroSpace48742.2020.9160074].
Damage evaluation on 3Dimensional Carbon Fibre laminates by speckle interferometry
Pagliarulo V.;Ferraro P.;Ricciardi M. R.;Antonucci V.;Papa I.;Lopresto V.
2020
Abstract
In this work, the evaluation of damaged areas due to low velocity impact tests at different impact energy values on Carbon Fibre (CF) laminates with 3D fabric, made by infusion technology and reinforced with epoxy resin, were investigated by NDI (Non-destructive Investigation) technique based on speckle interferometry. Composites are characterized by several interacting failure modes such as matrix breakage, fibre failure and delaminations, which can be simultaneously induced by low velocity impacts. It can be very difficult to detect by visual inspections of the structures such phenomena. The aim of this study is to evaluate the damaged area due to an impact event. CF composite laminates were impact damaged with four energy levels (5, 10, 20, 30J) at room temperature, by drop weight impact machine. The results showed that ESPI technique was able to identify barely visible low-velocity impact damages.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
