Delamination analysis of multi-angle composite curved beams using an out-of-autoclave material

Nguyen, Khanh-Hung; Ju, Hyunwoo; Truong, Viet-Hoai; Kweon, Jin‐Hwe

doi:10.1016/j.compstruct.2017.03.078

Cited by 35 publications

(24 citation statements)

References 24 publications

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“…Another approach to investigate the failure prediction quality is the non-linear simulation of the test-setup. Nguyen et al 22 use cohesive elements to model the delamination behaviour with good agreement to experimentally obtained strengths. A curved beam element was developed by Li 23 to correctly represent the influence of transverse shear deformation.…”

Section: Introductionmentioning

confidence: 88%

Determination of stresses, strains and failure types in multidirectional laminates under pure bending

Petersen

Kappel

Koord

et al. 2020

Journal of Composite Materials

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Curved structures made of fibre-reinforced plastics tend to show an out-of-plane failure type, when loaded under bending. One method to determine the related tensile strength in thickness direction, is the standardised unfolding test related to ASTM D6415 with L-profile specimens. However, the standard shall be used for unidirectional materials only, which is not the case for multidirectional laminates. Therefore, this publication presents methods to determine the layer-wise stress and strain state as well as occurring failure types of multidirectional laminates. An extension of the Lekhnitski formulae is presented and its results are validated by comparison with high resolution strain measurements by Digital Image Correlation. Based on the analytical solution, a failure analysis using Cuntze’s Failure Mode Concept is conducted. It was revealed, that the failure load and position can be predicted accurately, if a failure type related strength –in-plane or out-of-plane failure– is used. In the presence of [Formula: see text]-layers higher deviations occur between test and prediction and therefore limits the validity of the presented analytical failure analysis.

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Section: Introductionmentioning

confidence: 88%

Determination of stresses, strains and failure types in multidirectional laminates under pure bending

Petersen

Kappel

Koord

et al. 2020

Journal of Composite Materials

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“…9 Recently, there is a considerable amount of studies about OoA production method that exists by researchers via using prepreg. [10][11][12][13][14] The basic principle of the curing prepreg is heating and pressurizing the material due to a regime. This regime is known as the cure cycle in the composite industry.…”

Section: Introductionmentioning

confidence: 99%

A comparative study of mechanical and machining performance of polymer hybrid and carbon fiber epoxy composite materials

Ertürk

Yarar

Vatansever

et al. 2021

Polymers and Polymer Composites

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Fiber-reinforced plastics are known as advanced composite materials thanks to their high strength and lightweight features. Carbon fiber reinforced polymers (CFRPs) are one of the high-performance and high-cost fiber-reinforced polymer (FRPs) materials. They are used in several high-performance engineering applications such as motorsports, marine, aviation, energy and defense industry. The cost of carbon fiber is higher compared to many other materials, more competitive and cost-effective productions will spur the demand for composite parts exponentially. Thus, hybrid laminate composite containing carbon and glass fiber materials were manufactured as an alternative for CFRP materials. Because using glass fiber prepreg instead of carbon fiber prepreg will lead the material to become cheaper. However, machining of the FRP materials is still an important issue. For this reason, the present study is focused on the mechanical and machining performance of the polymer hybrid and carbon fiber epoxy composites.

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“…Thus, the prediction of the ILTS value and its post-failure evolution is a key factor when approaching the development of efficient designs. Numerical methodologies to predict ILTS in curved beams are proposed in several studies, such as those carried out by Raju [2], Avalon [4], Martin [5], Ross [6], Gozluklu [7], Kim [8], Ju [9] and Nguyen [10]. Although, different numerical methodologies to predict the onset and evolution of delamination are currently implemented in the packages of finite elements, Cohesive Zone Model (CZM) [2], [7], [11]- [14] has been used in the present study.…”

Section: Introductionmentioning

confidence: 99%

“…As Gozluklu [7], Nguyen [10] and Ranz [19] demonstrated, Cohesive Zone Model (CZM) including bilinear law applied to curved zones provides accurate predictions of maximum force values at failure and stiffness. However, it offers null information [10], imprecise [7] or shows some discrepancy [19] with experimental results regarding post-failure behavior.…”

Section: Introductionmentioning

confidence: 99%

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Enhanced cohesive zone model to predict delamination behavior of carbon/epoxy laminated curved beams

Ranz

Cuartero

Castejón

et al. 2020

Mechanics of Advanced Materials and Structures

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This paper proposes an enhanced Cohesive Zone Model (CZM) for the prediction of delamination in curved beams of epoxy carbon laminates. This model improves the conventional CZM, taking into account the fiber-bridging phenomenon and the variation of the element size among the thickness in the curved zone. The advantages of the enhanced model are underlined when results obtained from the numerical simulations of a four-point-bending test in compliance with ASTM D6415 standard are compared with the corresponding experimental results. The prediction of the post-failure behaviour obtained with this model is closer to that obtained experimentally than with the conventional model.

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Delamination analysis of multi-angle composite curved beams using an out-of-autoclave material

Cited by 35 publications

References 24 publications

Determination of stresses, strains and failure types in multidirectional laminates under pure bending

Determination of stresses, strains and failure types in multidirectional laminates under pure bending

A comparative study of mechanical and machining performance of polymer hybrid and carbon fiber epoxy composite materials

Enhanced cohesive zone model to predict delamination behavior of carbon/epoxy laminated curved beams

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