TY - JOUR
T1 - DLC-treated aramid-fibre composites
T2 - Tailoring nanoscale-coating for macroscale performance
AU - Kanerva, M.
AU - Korkiakoski, S.
AU - Lahtonen, K.
AU - Jokinen, J.
AU - Sarlin, E.
AU - Palola, S.
AU - Iyer, A.
AU - Laurikainen, P.
AU - Liu, X. W.
AU - Raappana, M.
AU - Tervakangas, S.
AU - Valden, M.
PY - 2019/2/8
Y1 - 2019/2/8
N2 - This work aims to quantify the effect of a diamond-like carbon coating (DLC) treatment of aramid fibres and to reveal the conversion of a fibre-level performance leap on the macroscale mechanical behaviour. The DLC-based coating is applied directly to the reinforcement and laminates are infused with an epoxy matrix. After characterisation of the coated surfaces, the performance of the composite is analysed via interlaminar shear testing, fatigue testing and damage tolerance testing, microbond tests, and 3D finite element simulation using a cohesive zone model of the interface. The results show that the coating treatment improves the fatigue life and the S-N curve slope for the laminates, while the residual strength after impact damage and environmental conditioning (water immersion at 60 °C) remains high. The scaling factor to convert the performance on macroscale was determined to be 0.17–0.39 for the DLC-based fibre treatment.
AB - This work aims to quantify the effect of a diamond-like carbon coating (DLC) treatment of aramid fibres and to reveal the conversion of a fibre-level performance leap on the macroscale mechanical behaviour. The DLC-based coating is applied directly to the reinforcement and laminates are infused with an epoxy matrix. After characterisation of the coated surfaces, the performance of the composite is analysed via interlaminar shear testing, fatigue testing and damage tolerance testing, microbond tests, and 3D finite element simulation using a cohesive zone model of the interface. The results show that the coating treatment improves the fatigue life and the S-N curve slope for the laminates, while the residual strength after impact damage and environmental conditioning (water immersion at 60 °C) remains high. The scaling factor to convert the performance on macroscale was determined to be 0.17–0.39 for the DLC-based fibre treatment.
KW - Aramid fibre
KW - Damage tolerance
KW - Finite element analysis (FEA)
KW - Interfacial strength
KW - Photoelectron spectroscopy (XPS)
UR - http://www.scopus.com/inward/record.url?scp=85058435801&partnerID=8YFLogxK
U2 - 10.1016/j.compscitech.2018.11.043
DO - 10.1016/j.compscitech.2018.11.043
M3 - Article
AN - SCOPUS:85058435801
VL - 171
SP - 62
EP - 69
JO - Composites Science and Technology
JF - Composites Science and Technology
SN - 0266-3538
ER -