Interlaminar fracture toughness of carbon/epoxy composites laminates toughened by short carbon fiber

Wang, Yongan; Shen, Wei; Chen, Lifeng; Zhu, Lvtao; Natsuki, Toshiaki

doi:10.1002/pc.27488

Cited by 11 publications

(3 citation statements)

References 36 publications

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“…To enhance the properties in the thickness direction and to compensate for the weakness of poor interlaminate ply toughness, a variety of techniques for thickness direction reinforcement have emerged, such as three-dimensional weaving, three-dimensional braiding, stitching, flocking, and Z-pin. [1][2][3][4][5] Z-pin technology for composites is done by embedding Z-pins of a certain bulk density in the thickness direction of the composite laminate. The most commonly used Z-pin process involves the insertion of Z-pins into the preforms of the laminate using ultrasonic tools and then curing the preforms to form the composite laminate.…”

Section: Introductionmentioning

confidence: 99%

“…Fiber‐reinforced resin matrix composite is a material with new properties composed of the organic polymer as a matrix and high‐performance fibers such as quartz fiber, carbon fiber, or basalt fiber as reinforcement, both of which are composed by physical or chemical methods at the macroscopic scale. To enhance the properties in the thickness direction and to compensate for the weakness of poor interlaminate ply toughness, a variety of techniques for thickness direction reinforcement have emerged, such as three‐dimensional weaving, three‐dimensional braiding, stitching, flocking, and Z‐pin 1–5 . Z‐pin technology for composites is done by embedding Z‐pins of a certain bulk density in the thickness direction of the composite laminate.…”

Section: Introductionmentioning

confidence: 99%

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Progressive damage analysis of Z‐pin reinforced composite laminates based on CDM

Shi,

Guo,

Niu

et al. 2024

Polymer Composites

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A RVE finite element model was developed, and the effective mechanical properties were predicted by analyzing the fine structure of Z‐pin reinforced composite laminates. A new damage criterion based on strain description is adopted, a progressive damage analysis model is established and progressive damage analysis is carried out, which provides a reference for further research on Z‐pin reinforced composites. By applying both longitudinal tensile and in‐plane shear loads to the RVE, the material strength prediction was carried out the damage evolution process was emphasized, and the stress–strain curves of the material as well as the damage modes and damage levels in different regions were finally predicted. From the damage evolution process, it can be seen that the damage in the fiber direction and the damage in the transverse direction appear the earliest and have the highest percentage of failure.Highlights The RVE model was developed and its effective mechanical properties were predicted. A new damage criterion is introduced, a UMAT subroutine is written, and a progressive damage model is developed. Material strength predictions were made for the RVE and the damage evolution process was emphasized.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Progressive damage analysis of Z‐pin reinforced composite laminates based on CDM

Shi,

Guo,

Niu

et al. 2024

Polymer Composites

View full text Add to dashboard Cite

show abstract

“…Based on the hybrid structure, FMLs have outstanding properties of high strength and stiffness, excellent plasticity, fatigue resistance, and corrosion resistance [ 3 , 4 ]. With the development of FML applications of lightweight composite materials, engineering requirements have placed higher demands on the load-bearing capacity, efficiency, and reliability of structures [ 5 , 6 ]. These advantages have made FMLs a potential lightweight and high-strength material for aerospace and transportation applications.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigation of the Tensile and Failure Response of Multiple-Hole-Fiber-Reinforced Magnesium Alloy Laminates under Various Temperature Environments

et al. 2023

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In this paper, the tensile mechanical behavior and progressive damage morphology of glass-fiber-reinforced magnesium alloy laminate for different numbers of holes in a temperature range of 25–180 °C were investigated. In addition, based on extensive tensile tests, the tensile mechanical behavior and microscopic damage morphology of porous-glass-fiber-reinforced magnesium alloy laminates at different temperatures were observed by finite element simulation and scanning electron microscopy (SEM). Finally, the numerical simulation and experimental results were in good accordance with the prediction of mechanical properties and fracture damage patterns of the laminates, the average difference between the residual strength values of the specimens at ambient temperature was 5.57%, and the stress–strain curves were in good agreement. The experimental and finite element analysis results showed that the damaged area of the bonded layer tended to expand with the increase in the number of holes, which has a lesser effect on the ultimate tensile strength. As the temperature increased, the specimens changed from obvious fiber breakage (pull-out) and the resin matrix damage mode to matrix softening damage and interfacial delamination fracture damage. As the testing temperature of the specimens increased from 25 °C to 180 °C, the tensile strength of the specimens decreased by an average of 51.59%, while the tensile strength of the specimens showed a nonlinear decreasing trend. The damage mechanism of porous-glass-fiber-reinforced magnesium alloy laminates at different temperatures is discussed in this paper, which can provide a reference for engineering applications and design.

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Preparation and characterization of silk hybridizing carbon fiber/polybutylene succinate composite

Zou

et al. 2023

Polymer Composites

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Carbon fiber‐reinforced composites (CFRPs) offer numerous benefits due to their exceptional strength and modulus, making them extensively utilized in various applications. However, the disadvantage of poor impact resistance also limits their application in some aspects. In this study, silk fabric is used to hybridize CFRPs, and the silk/carbon fiber‐reinforced polybutylene succinate (PBS) composites were fabricated by combining the film stacking technique with the hot‐pressing method. The mechanical, thermal, and thermodynamic properties of the composites were assessed using various techniques, including tensile testing, scanning electron microscope, flexural testing, Charpy impact test, low‐velocity impact test, differential scanning calorimetry, and dynamic mechanical thermal analysis, and the optimal preparation process conditions (140°C/15 min) for the composites were obtained. Additionally, the mechanical properties of silk fiber/PBS, carbon fiber/PBS, and hybrid composite materials are comprehensively compared and evaluated. This work indicates that the synergistic toughening of silk and PBS significantly improves the impact resistance of CFRPs, and the impact strength of sample 5 (140°C/15 min) (54.97 kJ/m2) is higher than many reported values for CFRPs.Highlights High strength, high modulus carbon fiber, and high toughness silk were rarely combined as reinforcing phases for PBS composites. A hybrid composite material with a balanced combination of stiffness, strength, and toughness was prepared. Compared with similar studies, it was found that the hybrid composite prepared by this work exhibited relatively balanced mechanical properties, especially, its impact strength higher than many reported values.

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Interlaminar fracture toughness of carbon/epoxy composites laminates toughened by short carbon fiber

Cited by 11 publications

References 36 publications

Progressive damage analysis of Z‐pin reinforced composite laminates based on CDM

Progressive damage analysis of Z‐pin reinforced composite laminates based on CDM

Experimental and Numerical Investigation of the Tensile and Failure Response of Multiple-Hole-Fiber-Reinforced Magnesium Alloy Laminates under Various Temperature Environments

Preparation and characterization of silk hybridizing carbon fiber/polybutylene succinate composite

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