On the Mechanical Behaviour of Carbon Fibre Laminates Repaired with Hot Bonding Technology by Infusion

Humans have been using composite materials for several years. Still, their development is relatively recent and connected particularly to aeronautic and aerospace applications because of their exceptional strength, stiffness-to-density ratio and superior physical properties. Composites provide several advantages compared to traditional metallic counterparts for high-performance products that need to be lightweight but strong enough for tough loading conditions. However, these materials are sensitive to both high and low-speed impacts that frequently occur in the automotive and aerospace fields. Due to the high production costs for every single component in carbon fiber reinforced polymer, CFRP, further repair techniques have been developed to repair damaged components of a complex structure on-site without disassembling any element. This work investigated the goodness of the hot bonding repair technique by ultrasound technique and mechanical tests. An experimental study was carried out to determine the characteristics of carbon fiber-reinforced plastic at the open hole tension and open hole compression tests.