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Impact Response of Semi-Cylindrical Composite Laminate Shells Under Repeated Low-Velocity Impacts
This work presents the results of an experimental study that aims to analyse the behaviour of semi-cylindrical laminated composite shells under repeated low-velocity impact loads at different impact points. The specimens were produced by vacuum-assisted resin transfer moulding with an epoxy resin and reinforced with a bi-directional E-glass woven fabric. Seven different inline impact points with distances between 0 mm and 60 mm were considered. To visualize and identify the damage initiation and evolution between impacts, the specimens were photographed with an intense backlight. The experimental results have shown that the damaged areas of the impact points overlap for distances between impacts (DBI) of 20 mm. On the other hand, for DBI of 40 mm and 60 mm, no overlap was observed until full perforation. It was also observed that the overlap of the damage causes a reduction of the impact fatigue life of the specimens.
Impact Response of Semi-Cylindrical Composite Laminate Shells Under Repeated Low-Velocity Impacts
This work presents the results of an experimental study that aims to analyse the behaviour of semi-cylindrical laminated composite shells under repeated low-velocity impact loads at different impact points. The specimens were produced by vacuum-assisted resin transfer moulding with an epoxy resin and reinforced with a bi-directional E-glass woven fabric. Seven different inline impact points with distances between 0 mm and 60 mm were considered. To visualize and identify the damage initiation and evolution between impacts, the specimens were photographed with an intense backlight. The experimental results have shown that the damaged areas of the impact points overlap for distances between impacts (DBI) of 20 mm. On the other hand, for DBI of 40 mm and 60 mm, no overlap was observed until full perforation. It was also observed that the overlap of the damage causes a reduction of the impact fatigue life of the specimens.
Impact Response of Semi-Cylindrical Composite Laminate Shells Under Repeated Low-Velocity Impacts
Ferreira, Luis (author) / Coelho, Carlos (author) / Reis, Paulo (author)
2022-02-21
7565912 byte
Conference paper
Electronic Resource
English
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