Increasing crack growth resistance for through-thickness matrix cracking and its role in suppressing ply cracking in thin-ply laminates

Chang, Wenkai; Rose, L. R. F.; Wu, Shuying; Kinloch, A. J.; Wang, Chunhui

doi:10.1016/j.compositesa.2022.107219

Cited by 7 publications

(1 citation statement)

References 52 publications

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“…By comparing the development of delamination damage caused to the single-lap structures with a conventional thickness and thin-ply, the single-lap structures with thin-ply composite materials do not suffer extensive delamination damage that is common in the conventional thickness materials [32]. Ireman et al [33][34][35] evidenced that the microstructure of thin-ply-laminated composite performs better in uniformity, which is more conducive to preventing intra-layer damage and the expansion of delamination damage between layers. In the paper, the numerical model of a thin-ply-laminated composite-bolted joint is created.…”

Section: Analysis Of Progressive Failure Mechanism Of Single-lap Stru...mentioning

confidence: 99%

Modeling Progressive Damage and Failure of Single-Lap Thin-Ply-Laminated Composite-Bolted Joint Using LaRC Failure Criterion

Wang

et al. 2022

Materials

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Thin-ply composite failure modes also significantly differ from conventional ply composite failure modes, with the final failure mechanism switching from irregular progressive failure to direct fracture characterized by a uniform fracture with the reduction of the ply thickness. When open holes and bolt joints are involved, thin-ply-laminated composites exhibit more complex stress states, damage evolution, and failure modes. Compared to the experimental study of thin-ply-laminated composite-bolted joints, there are few reports about numerical analysis. In order to understand the damage evolution and failure mechanism of thin-ply-laminated composites jointed by single-lap bolt, a progressive damage model based on three-dimensional (3D) LaRC failure criterion combined with cohesive element is constructed. Through an energy-based damage evolution method, this model can capture some significant mechanical characteristics in thin-ply-laminated structures, such as the in situ effect, delamination inhibition, and fiber compressive kinking failure. The comparisons between the numerical predictions and experimental observations are made to verify the accuracy of the proposed model. It is found that the predicted stress-displacement curves, failure modes, damage morphologies, etc., are consistent with the experimental results, indicating that the presented progressive damage analysis method displays excellent accuracy. The predicted stress at the onset of delamination is 50% higher than that of the conventional thick materials, which is also consistent with experimental results. Moreover, the numerical model provides evidence that the microstructure of thin-ply-laminated composite performs better in uniformity, which is more conducive to inhibiting the intra-layer damage and the expansion of delamination damage between layers. This study on the damage inhibition mechanism of thin-ply provides a potential analytical tool for evaluating damage tolerance and bearing capabilities in thin-ply-laminated composite-bolted joints.

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Section: Analysis Of Progressive Failure Mechanism Of Single-lap Stru...mentioning

confidence: 99%

Modeling Progressive Damage and Failure of Single-Lap Thin-Ply-Laminated Composite-Bolted Joint Using LaRC Failure Criterion

Wang

et al. 2022

Materials

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Microcracking resistance of 3D printed fibre composites at cryogenic temperatures

Huang,

Chang,

Islam

et al. 2024

Additive Manufacturing

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Mitigating cryogenic microcracking in carbon-fibre reinforced polymer composites using negative thermal-expansion nanoparticles functionalized by a polydopamine coating

Islam¹,

Chang²,

Zhang³

et al. 2023

Composites Part B: Engineering

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Increasing crack growth resistance for through-thickness matrix cracking and its role in suppressing ply cracking in thin-ply laminates

Cited by 7 publications

References 52 publications

Modeling Progressive Damage and Failure of Single-Lap Thin-Ply-Laminated Composite-Bolted Joint Using LaRC Failure Criterion

Modeling Progressive Damage and Failure of Single-Lap Thin-Ply-Laminated Composite-Bolted Joint Using LaRC Failure Criterion

Microcracking resistance of 3D printed fibre composites at cryogenic temperatures

Mitigating cryogenic microcracking in carbon-fibre reinforced polymer composites using negative thermal-expansion nanoparticles functionalized by a polydopamine coating

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