Simulation of the Mechanical Response of Thin-Ply Composites: From Computational Micro-Mechanics to Structural Analysis

Arteiro, Albertino; Catalanotti, G.; Reinoso, J.; Linde, Peter; Camanho, P.P.

doi:10.1007/s11831-018-9291-2

Cited by 59 publications

(24 citation statements)

References 188 publications

(525 reference statements)

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“…The use of thin-plies has been shown to significantly increase the mechanical properties of continuous-fibre composite laminates as well. In earlier work by Dvorak and Laws [16], and later by Camanho et al [17] and Arteiro et al [18], experimental observations and numerical predictions have shown that the in-situ transverse tensile and shear strength increase with the reduction in ply thickness. Moreover, experimental studies by Sihn et al [19] and Amacher et al [20] have demonstrated that the stress for the onset of damage and the ultimate tensile strength of quasi-isotropic laminates increase with reduced ply thickness.…”

Section: Introductionmentioning

confidence: 89%

Ultra-strong and stiff randomly-oriented discontinuous composites: Closing the gap to quasi-isotropic continuous-fibre laminates

Alves

Carlstedt

Ohlsson

et al. 2020

Composites Part A: Applied Science and Manufacturing

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Section: Introductionmentioning

confidence: 89%

Ultra-strong and stiff randomly-oriented discontinuous composites: Closing the gap to quasi-isotropic continuous-fibre laminates

Alves

Carlstedt

Ohlsson

et al. 2020

Composites Part A: Applied Science and Manufacturing

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“…This model was shown to capture the increase of stress required to grow a crack with decreasing ply thickness. A critical review of this approach compared to experiments and analytical modelling was also published [11].…”

Section: Introductionmentioning

confidence: 99%

Transverse cracking in the bulk and at the free edge of thin-ply composites: Experiments and multiscale modelling

Kohler

Botsis

Amacher

2019

Composites Part A: Applied Science and Manufacturing

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Thin-ply composites were shown to exhibit significantly delayed transverse cracking, but the linear onset of damage scaling with ply thickness reported by Amacher et al. [1] did not correspond to the established LEFM based in-situ strength model. This study further investigates this experimental behaviour by simultaneously comparing in-situ free edge crack observation with acoustic emission measurements as well as performing ex-situ X-ray tomography observations of crack propagation. A multi-scale FE model was used to better understand the damage mechanisms at play, and showed a decreasing trend of the apparent toughness with decreasing ply thickness, which explains the deviation from the existing model. Transverse cracking at the free edges was observed to propagate quickly towards the center of the specimens for the thickest plies, while in the thinnest plies it is significantly delayed, up to a point where no cracks can reach the center of the sample before final failure.

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“…It is worth mentioning the work performed by Arteiro et al [17], who using micro- mechanical analysis showed that when the ply is sufficiently thick several cracks propagate through the thickness; however, when the thickness is sufficiently small through-thickness crack propagation is followed by diffused damage due to the plasticity of the resin. It is clear that when this occurs the failure mechanism changes and the proposed model is possibly not rigorous; it is conceivable, however, to expect that the proposed method yields a conservative value of the in situ strength.…”

Section: In Situ Transverse Compressive Strength and Transverse Shearmentioning

confidence: 99%

“…Therefore, the first ply failure of the laminate will depend on the outer ply. It should also be observed that the analyses performed in [17] consider only the variation of the thickness, while the diameter of the fibre, d, remains constant.…”

Section: In Situ Transverse Compressive Strength and Transverse Shearmentioning

confidence: 99%

Prediction of in situ strengths in composites: Some considerations

Catalanotti

2019

Composite Structures

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The classic formulation that relates the fracture toughness with the in situ strength of the ply implicitly assumes that a fracture process zone fully develops within the ply. This assumption, reasonable for conventional composite laminates, may not be appropriate when the ply thickness is very small or the fracture process zone very large. In the following it is shown how considering the R-curve of the material, the in situ strength for the cases when the fracture process zone cannot develop completely can be correctly computed. Closed form solutions are found for the in situ strengths, and for their maximum values that are obtained when the ply thickness approaches zero.

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Simulation of the Mechanical Response of Thin-Ply Composites: From Computational Micro-Mechanics to Structural Analysis

Cited by 59 publications

References 188 publications

Ultra-strong and stiff randomly-oriented discontinuous composites: Closing the gap to quasi-isotropic continuous-fibre laminates

Ultra-strong and stiff randomly-oriented discontinuous composites: Closing the gap to quasi-isotropic continuous-fibre laminates

Transverse cracking in the bulk and at the free edge of thin-ply composites: Experiments and multiscale modelling

Prediction of in situ strengths in composites: Some considerations

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