Ply-interleaving technique for joining hybrid carbon/glass fibre composite materials

Ahamed, Jasim; Joosten, Mathew; Callus, Paul J.; John, Sabu; Wang, Chun H.

doi:10.1016/j.compositesa.2016.01.010

Cited by 31 publications

(18 citation statements)

References 26 publications

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“…Damaging these components will ensure that the cohesive element does not provide any traction when the damage function is equal to unity and behaves like a discrete failure. This type of approach has been used to represent fibre failure in threedimensional CDM models for unidirectional fibre reinforced composites [7,9].…”

Section: Fibre Failurementioning

confidence: 99%

“…CDM often incorporates a crack band approach [4]. This approach has shown to provide reasonable prediction of damage initiation and progression in composite structures [5][6][7][8][9], provided the damage laws are adequately calibrated from experimental tests. On the other hand, fracture mechanics approaches, such as the eXtended Finite Element Method (XFEM) and the Augmented Finite Element Method (AFEM), explicitly model the discontinuity of a crack.…”

Section: Introductionmentioning

confidence: 99%

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A cohesive network approach for modelling fibre and matrix damage in composite laminates

Joosten

Yang

Blacklock

et al. 2018

Composite Structures

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In the current study a high fidelity analysis approach is used to predict failure in notched composite structures. Discrete cracking is explicitly modelled by incorporating cohesive interface elements along potential failure paths. These elements form an interconnected network that allows for interaction between interlaminar and intralaminar failure modes. Finite element models of these configurations were created in the commercial analysis software ABAQUS and a user defined material subroutine (UMAT) was used to describe the behaviour of the cohesive elements. The user material subroutine ensured that the model remained stable despite significant damage, which is a significant challenge for implicit damage simulations. Two analysis approaches were adopted using both the as-measured and in-situ ply strengths. Both approaches were capable of closely predicting the mean ultimate strength for a range of hole diameters, however, the measured ply properties resulted in extensive matrix cracking in the surface ply which resulted in a deviation from the experimentally measured surface strain. The results demonstrate that high fidelity physically based modelling approaches have the ability to compliment experimental programs focussed on the design and certification of composite structures.

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Section: Fibre Failurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A cohesive network approach for modelling fibre and matrix damage in composite laminates

Joosten

Yang

Blacklock

et al. 2018

Composite Structures

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“…Moreover, the introduction of a butted ply termination reduces the laminate strength by 35% [14]. The strength of an interleaved scarf joint, where the ply terminations are aligned along a linear scarf, between carbon fibre laminate and glass fibre laminate was found to be 31% lower than the un-notched strength of the glass fibre composite [15].…”

Section: Introductionmentioning

confidence: 98%

“…Cocuring is preferred over mechanical fastening or post-cure adhesive bonding for joining dissimilar composites as they offer higher structural efficiency and lower manufacturing cost. A number of cocured ply joining techniques have been proposed in the literature [10] [11][12][13] [14] [15].The simplest technique is to butt individual plies by intelligently tailoring the positions of the ply terminations.…”

Section: Introductionmentioning

confidence: 99%

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Ply-overlap hybrid technique for joining dissimilar composite materials

et al. 2016

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Hybridisation of multiple materials is emerging as a key strategy to achieving high performance lightweight structures while keeping the cost low. Fundamental to creating strong and cost-effective hybrid composites is the ability to efficiently join dissimilar materials. Herein we present a novel cocuring ply-overlap joint technique for integrating dissimilar composite materials. Experimental studies are conducted to identify the dominant failure mechanisms and the effect of design parameters, such as the spatial distances between ply terminations and overlap length, on the strength of hybrid composite ply-overlap joints. To enable optimisation of ply-overlap joints, analytical and computational models are developed and validated against the experimental data. The results demonstrate that ply-overlap joints are capable of approaching the un-notched strength of the glass composite material. The validated predictive tools enable design optimisation of hybrid composite structures.

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Synergistic mode II delamination toughening of composites using multi-scale carbon-based reinforcements

Ravindran

Ladani

Wang

et al. 2019

Composites Part A: Applied Science and Manufacturing

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Ply-interleaving technique for joining hybrid carbon/glass fibre composite materials

Cited by 31 publications

References 26 publications

A cohesive network approach for modelling fibre and matrix damage in composite laminates

A cohesive network approach for modelling fibre and matrix damage in composite laminates

Ply-overlap hybrid technique for joining dissimilar composite materials

Synergistic mode II delamination toughening of composites using multi-scale carbon-based reinforcements

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