Enhancement of mechanical properties of CFRP manufactured by using electro-activated deposition resin molding method with the application of CNF without hydrophobic treatment

Katagiri, K.; Sasaki, Katsuhiko; Honda, Shinya; Minami, Sayaka; Yamaguchi, Shimpei; Ehiro, Takuya; Ozaki, Tomoatsu; Sonomura, Hirosuke; Kawakita, Sonomi; Uchida, Sohei; Nezu, Masayuki; Yoshioka, Yayoi

doi:10.1016/j.compscitech.2018.10.030

Cited by 8 publications

(2 citation statements)

References 15 publications

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“…10 Adding 2 wt% CNT to the epoxy matrix of CFRP enhanced the tensile strength and the elastic modulus by 26 and 19% respectively. 11 The amount of CNF in the CFRP is also a relevant factor: Katagiri et al 12 have shown that the introduction of CNF up to around 2 wt% increases bending strength and flexural modulus, but the more brittle material behaviour leads to a decrease of the mechanical properties. In general, the use of CNT, 13 CNF and short carbon fibres 14 enhances the fracture toughness of the composite significantly.…”

Section: Introductionmentioning

confidence: 99%

“…34 Further, it was shown e.g., that the orientation of nanofiller inside the specimen can enhance the conductivity and the mechanical properties of the composite: Addition and orientation of 0.3 wt% CNT lead to an increase of the interlaminar shear strength of the CFRP composite of 19.7% and the through-thickness conductivity increased by 38%. 33 While quasi-static mechanical properties of nano-modified composites were investigated extensively, 10,12,[35][36][37][38] much less is known about the performance of nano-reinforced CFRP under cyclic loading.…”

Section: Introductionmentioning

confidence: 99%

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Effect of carbon nanofibre orientation on fatigue properties of carbon fibre-reinforced polymers

Mrzljak

Zanghellini

Gerdes

et al. 2023

Journal of Composite Materials

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Nano-reinforcements in carbon fibre-reinforced polymer (CFRP) have proven to enhance the mechanical properties considering quasi-static, as well as fatigue load and, are a promising option with regard to CFRP performance optimisation. While general knowledge about the nanofiller content and its influence in CFRP is well documented, the use of alignment techniques for a specific orientation of the nano-reinforcements is still insufficiently studied. In this work, the influence of oriented carbon nanofibres (CNF) on the mechanical properties of bidirectional CFRP is investigated. CFRP was produced CNF-reinforced with and without orientation using a hot press, where an electric field was applied during curing. The laminates were characterised with respect to dispersion quality, pore volume, quasi-static properties (tensile and bending tests) and dynamic properties (fatigue tests). Electrical resistance measurement was applied together with digital image correlation and in situ computed tomography to generate knowledge about the fatigue-related damage evolution and evaluate the sensors for viable use of condition monitoring. Results show that the orientation of CNF has a significant impact on both quasi-static and fatigue properties, increasing the strength while reducing and slowing down the introduced damage. Orientation of nanofillers thus shows large optimization potential of mechanical properties of CFRP components.

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