Predicting and Characterizing Plastic Deformation Behavior of Transversely-isotropic Carbon Fiber Monofilament Using Finite Element Simulation and Nanoindentation

Li, Hongzhou; Liu, Chuntai; Chen, Jialian

doi:10.1007/s12221-021-1081-z

Cited by 4 publications

(2 citation statements)

References 29 publications

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“…For FT and FC, the damage parameters are defined as follows:where R‖normalt represents the tensile strength of the unidirectional composite plate along the fiber direction; R‖normalc represent the compressive strength. E1f is the longitudinal elastic modulus of the fiber, the value of which is about 234 MPa 30 ; E1 is the longitudinal elastic modulus of the unidirectional plate, ν12f is the principal Poisson’s ratio of the fiber, the value of which is about 0.26 31 ; ν12 is the principal Poisson ratio of the unidirectional plate. mσf is the amplification factor with a value of about 1.1.…”

Section: Experimental Materials and Methodsmentioning

confidence: 99%

Finite element analysis of the effect of crystallinity on low-velocity impact performance of poly (aryl ether ketone) composites

Xie,

Liu,

Yao

et al. 2024

Journal of Composite Materials

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A new copolymer poly (aryl ether ketone) (PAEK) resin was used as a matrix to prepare carbon fiber (CF) reinforced composites with different crystallinity by slow and rapid cooling. Finite element (FE) models were constructed according to micromechanics, and the progressive damage method based on the three-dimensional (3D) PUCK damage criterion was used to analyze the low-velocity impact damage mechanism of the CF/PAEK composites. The experimental results show that the composites with lower crystallinity have higher impact resistance and smaller impact damage area. In the FE simulated impact damage evolution process, the damage of the impact side is mainly compressive damage of the matrix and the fiber, while that of the impact back side is mainly tensile damage of the matrix. Moreover, due to their high interfacial bonding strength, the main damage modes of rapid-cooled composites with lower crystallinity are severe matrix tensile damage and slight fiber tensile damage in the impact back side. However, the slow-cooled composites show more delamination. In addition, for the damage evolution of compression after impact, the FE simulation shows that fiber compression, matrix tension, matrix compression and delamination expand along the transverse to the compression load. Furthermore, the in-plane damage expansion occurs earlier in the rapid-cooled composites, which also have graver interlaminar damage.

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Section: Experimental Materials and Methodsmentioning

confidence: 99%

Finite element analysis of the effect of crystallinity on low-velocity impact performance of poly (aryl ether ketone) composites

Xie,

Liu,

Yao

et al. 2024

Journal of Composite Materials

View full text Add to dashboard Cite

show abstract

“…Different methods have been reported in the literature to address this. Firstly, traditional nanoindentation experiments have been supported with mathematical models, atomic force microscopy, and finite element analysis to ensure the unconstrained circular cross-section of the fiber does not impact the result [25,26]. Another method probes CFs embedded in a composite using nanoindentation to measure the reduced modulus in the transverse and longitudinal directions from which the five unique stiffness coefficients of a transversely isotropic fiber can then be calculated [27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Improving Transverse Compressive Modulus of Carbon Fibers during Wet Spinning of Polyacrylonitrile

Wong

Hillbrick

Kaur

et al. 2022

Fibers

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The performance of carbon fibers depends on the properties of the precursor polyacrylonitrile (PAN) fibers. Stretching of PAN fibers results in improved tensile properties, while potentially reducing its compressive properties. To determine optimization trade-offs, the effect of coagulation conditions and the stretching process on the compressive modulus in the transverse direction (ET) was investigated. A method for accurately determining ET from polymer fibers with non-circular cross-sectional shapes is presented. X-ray diffraction was used to measure the crystallite size, crystallinity, and crystallite orientation of the fibers. ET was found to increase with decreasing crystallite orientation along the drawing direction, which decreases the tensile modulus in the longitudinal direction (EL) proportionally to crystallite orientation. Stretching resulted in greater crystallite orientation along the drawing direction for fibers formed under the same coagulation conditions. Increasing the solvent concentration in the coagulation bath resulted in a higher average orientation, but reduced the impact of stretching on the orientation. The relationship between ET and EL observed in the precursor PAN fiber is retained after carbonization, with a 20% increase in ET achieved for a 2% decrease in EL. This indicates that controlled stretching of PAN fiber allows for highly efficient trading off of EL for ET in carbon fiber.

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Effects of carbon nanomaterials on the interfacial properties of carbon fiber reinforced epoxy resin composite

Yu,

Ding,

Xiao

et al. 2024

Polymer Composites

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The surface of carbon fiber is treated with sizing agent containing hydroxylated carbon nanotubes, fullerenols, and graphene oxide, respectively. The effects of carbon nanomaterials and their structures on the surface properties of carbon fiber, the interfacial properties and the mechanical properties of carbon fiber/epoxy composites are investigated. All three types of carbon nanomaterial can improve the interfacial bonding strength and modulus, thereby enhancing the interlaminar shear strength (ILSS) of composites. Moreover, the ILSS increases with the increase of interfacial bonding strength, due to the roughness and the number of active groups. Compared with the composite without carbon nanomaterials, the interfacial bonding strength of the three nanoparticle‐modified composites increased by 14%, 5% and 4%, the modulus increased by 10%, 26%, and 9%, and the ILSS increased by 14%, 8%, and 7%, respectively. The interfacial bonding strength has a more significant impact on the ILSS than the interfacial modulus.Highlights CNTs, graphene oxide and fullerenols regulate the surface characteristics of carbon fibers. The influence of carbon nanomaterials on the interfacial properties of composites. The relationship between the fiber surface, the interface and the composites.

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Predicting and Characterizing Plastic Deformation Behavior of Transversely-isotropic Carbon Fiber Monofilament Using Finite Element Simulation and Nanoindentation

Cited by 4 publications

References 29 publications

Finite element analysis of the effect of crystallinity on low-velocity impact performance of poly (aryl ether ketone) composites

Finite element analysis of the effect of crystallinity on low-velocity impact performance of poly (aryl ether ketone) composites

Improving Transverse Compressive Modulus of Carbon Fibers during Wet Spinning of Polyacrylonitrile

Effects of carbon nanomaterials on the interfacial properties of carbon fiber reinforced epoxy resin composite

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