Mode I and mode II fracture behavior in nano‐engineered long fiber reinforced composites

Le, Anh Tuan; Govignon, Quentin; Rivallant, Samuel; Cutard, Thierry

doi:10.1002/pc.27374

Cited by 4 publications

(1 citation statement)

References 42 publications

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“…[24][25][26][27] A few papers have discussed the addition of VACNTs at the inter-layer and their effect on the mechanical properties of the composites. [28][29][30][31][32][33] With regard to static results, Garcia et al 28 transfer VACNTs to the surface of unidirectional prepregs. Crack opening tests in mode I for both the reference and nano-engineered composites were conducted.…”

Section: Introductionmentioning

confidence: 99%

Composite laminates reinforced by vertically aligned carbon nanotubes: Detailed manufacturing process, from nanotubes transfer to composite consolidation

Le,

Govignon,

Rivallant

et al. 2023

Journal of Composite Materials

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Nano-constituent incorporation into composites has been extensively studied in the literature due to its improvement in static and dynamic mechanical properties, as well as its prevention from interlaminar crack initiation and propagation. This work introduces a detailed manufacturing process of nano-engineered composite laminates, from impregnation to consolidation, without damaging the initial morphology of carbon nanotubes transferred on prepreg interfaces. Based on prepreg and vertically aligned carbon nanotubes (VACNTs) synthesized on an aluminium alloy (Al) substrate, the impregnation step allows for the transfer of VACNTs onto the prepreg surface through partial resin-rising capillarity. The Al alloy substrate is then removed from the VACNTs through a separation step, ensuring highly effective and repeatable transfer with more than 80% VACNTs transferred onto the prepreg surface. This paper provides insight into the impregnation and transfer processes and guides the choice of process parameters to ensure minimal VACNTs buckling during the consolidation of the hybrid composites at high pressure in an autoclave.

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Section: Introductionmentioning

confidence: 99%

Composite laminates reinforced by vertically aligned carbon nanotubes: Detailed manufacturing process, from nanotubes transfer to composite consolidation

Le,

Govignon,

Rivallant

et al. 2023

Journal of Composite Materials

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Study on Mode I interlaminar fracture behavior of automated fiber placement in situ consolidation thermoplastic composite considering the influence of roller compaction pressure

Liu,

He,

Zou

et al. 2024

Polymer Composites

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This study delved into the Mode I fracture behavior of laser‐assisted automated fiber placement (AFP) in situ consolidated thermoplastic composite laminates under different curing pressures. In compliance with ASTM D5528 standards, T700 carbon fiber reinforced polyether ether ketone (T700‐CF/PEEK) double cantilever beam (DCB) specimens were fabricated and segregated into three test groups subjected to distinct roller pressures: DCB‐100N, DCB‐500N, and DCB‐1500N. The fracture toughness of these specimens was then inversely characterized by employing an optimized ASTM‐based data reduction methodology. A kind of tri‐linear cohesive zone model (CZM) incorporating the fracture process zone (FPZ) length was developed to simulate delamination behavior, showing good agreement between experimental results and simulation predictions. Compared with the other two test groups, DCB‐1500N specimens have more inter‐laminar bridging fibers and higher propagated toughness. Although the length of fiber bridging area is shorter, the fiber bridging density is higher, so the influence of fiber bridging on toughness is more pronounced in the DCB‐1500N specimens. This study provides theoretical guidance for the impact resistance design of thermoplastic composites (TPCs), offering valuable insights into the intrinsic relationship between material processing and fracture damage mechanisms.Highlights Explore the characteristic interlaminar fracture behavior of thermoplastic laminates made by AFP under different curing pressures. Develop a more accurate tri‐linear CZM model to describe the plastic deformation at crack tips and fiber bridging during the delamination process. Unveil the intrinsic relationship between AFP curing pressure and ductile fracture mechanism of thermoplastic composites.

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Investigation of mechanical properties of nano hexagonal boron nitride integrated epoxy adhesives in bonded GFRP and CFRP composite joints

Demircan,

Kalaycı

2024

International Journal of Adhesion and Adhesives

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Mode I and mode II fracture behavior in nano‐engineered long fiber reinforced composites

Cited by 4 publications

References 42 publications

Composite laminates reinforced by vertically aligned carbon nanotubes: Detailed manufacturing process, from nanotubes transfer to composite consolidation

Composite laminates reinforced by vertically aligned carbon nanotubes: Detailed manufacturing process, from nanotubes transfer to composite consolidation

Study on Mode I interlaminar fracture behavior of automated fiber placement in situ consolidation thermoplastic composite considering the influence of roller compaction pressure

Investigation of mechanical properties of nano hexagonal boron nitride integrated epoxy adhesives in bonded GFRP and CFRP composite joints

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