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Van Innis, Charline Van Innis
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (8/8 displayed)
- 2024Ultra tough architected joints through single manufacturing step
- 2024Ultra-tough architected adhesive joints for integrated composite processing and bondingcitations
- 2023Mechanics of PEI-expoxy interfaces
- 2023Fracture toughness of architected joints involving crack instabilities
- 2023Ultra tough architected joints through single step bonding process with tunable properties
- 2022Integrated manufacturing and toughening of composite joints using a PEI film
- 2022Composite joint toughening by multiscale architecturing through integrated manufacturing
- 2021Bonding polymer Composites with PEI film: crack trapping and enhanced fracture resitstance
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document
Bonding polymer Composites with PEI film: crack trapping and enhanced fracture resitstance
Abstract
Fiber reinforced polymer (FRP) composites offer many advantages such as lightweight and high strength motivating their intensive use in aircrafts. However, the manufacturing of complex composite parts often requires bonding composite parts in an efficient way [1]. Adhesives can be used, but with low to moderate toughness [2] and difficulties to develop integrated manufacturing approaches. Several strategies have been proposed to increase the joint toughness. One option is replacing the adhesive by a thermoplastic film, but which necessitates a tough thermoplastic-thermoset interphase. Recently, Voleppe et al. observed an enhanced fracture resistance of thermoplastic/thermoset interfaces owing to a crack trapping mechanism in a morphological gradient when inserting a PEI film in the epoxy resin RTM6 [3]. The interface is characterized by a fracture toughness equal to 800J/m², similar to that of good structural adhesives for composite bonding, while the one of the epoxy resin is only about 100 J/m². The crack is trapped between the PEI film and a co-continuous morphology (Figure 1). The goal of the current research is to apply this concept to composite bonding and to better understand this toughening mechanism.