Impact and fatigue tolerant natural fibre reinforced thermoplastic composites by using non-dry fibres
Javanshour, Farzin; Prapavesis, Alexandros; Pournoori, Nazanin; Correa Soares, Guilherme; Orell, Olli; Pärnänen, Tuomas; Kanerva, Mikko; Van Vuure, Aart Willem; Sarlin, Essi (2022-10)
Javanshour, Farzin
Prapavesis, Alexandros
Pournoori, Nazanin
Correa Soares, Guilherme
Orell, Olli
Pärnänen, Tuomas
Kanerva, Mikko
Van Vuure, Aart Willem
Sarlin, Essi
10 / 2022
107110
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tuni-202209066910
https://urn.fi/URN:NBN:fi:tuni-202209066910
Kuvaus
Peer reviewed
Tiivistelmä
This article introduces stiff and tough biocomposites with in-situ polymerisation of poly (methyl methacrylate) and ductile non-dry flax fibres. According to the results, composites processed with non-dry fibres (preconditioned at 50% RH) had comparable quasi-static in-plane shear strength but 42% higher elongation at failure and toughness than composites processed with oven-dried fibres. Interestingly, the perforation energy of flax–PMMA cross-ply composites subjected to low-velocity impact increased up to 100% with non-dry flax fibres. The in-situ impact damage progression on the rear surface of composites was evaluated based on strain and thermal field maps acquired by synchronised high-speed optical and thermal cameras. Impact-induced delamination lengths were investigated with tomography. Non-dry fibres also decreased the tension–tension fatigue life degradation rate of composites up to 21% and altered the brittle failure mode of flax–PMMA to ductile failure dominated by fibre pull-out.
Kokoelmat
- TUNICRIS-julkaisut [16726]