A two-dimensional in situ fatigue cohesive zone model for crack propagation in composites under cyclic loading

Nojavan, Saeed; Schesser, D.; Yang, Qingda

doi:10.1016/j.ijfatigue.2015.08.029

Cited by 35 publications

(10 citation statements)

References 40 publications

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“…A classical bilinear cohesive law is adopted in this study. It has been utilized many times in the literature both for the simulation of static and fatigue delamination due to its simplicity in implementation (Alfano and Crisfield, 2001;Turon et al, 2006;Kawashita and Hallett, 2012;Nojavan et al, 2016). The bilinear cohesive law developed by Turon (Turon et al, 2006) is widely used for modeling delamination in composite structures, and serves as basis in this study.…”

Section: Bi-linear Cohesive Constitutive Law In the Case Of A Single mentioning

confidence: 99%

An Incremental Cohesive Law for Delamination Under a Mixed Mode Loading

Zhu

Gorbatikh²,

Lomov³

2020

Front. Mater.

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Section: Bi-linear Cohesive Constitutive Law In the Case Of A Single mentioning

confidence: 99%

An Incremental Cohesive Law for Delamination Under a Mixed Mode Loading

Zhu

Gorbatikh²,

Lomov³

2020

Front. Mater.

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“…However, the mechanism how the crack propagates has not been well understood yet because the propagation involves the interaction between the fibre-epoxy composite laminate and the metal laminate in the region nearby the crack tip, and the propagation is affected by the interface condition between the laminates in which the delamination occurs [4,5]. In addition, the previous investigations of the crack propagation relating to the delamination on the FMLs were focused on the tensile cyclic loads [7][8][9][10][11] not involving the compressive cyclic load.…”

Section: вивчення характеру розвитку трIщин пов'язаного з розшаруванmentioning

confidence: 99%

The relation of crack propagation behaviour and delamination on Fibre Acrylic Laminates under various cyclic conditions

Purnowidodo

Anam

Maulidika

2018

EEJET

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6 good ductility. Those properties can be obtained by combining a fibre-reinforced composite and a metal [2, 3]. 2. Literature review and problem statement It is very common that structures work under dynamic loads, and they are rare to be subjected to static loads. If there are defects such as cracks in a material of the structure loaded under dynamic loads, the cracks may propagate to its critical length, which endangers the safety of the structure. The crack propagation caused by the dynamic load may also occur on the composite materials such as FMLs [2]. The crack propagation taking place in the FMLs is associated with the delamination occurring over the crack region behind the crack tip [4, 5]. Although the crack propagation behaviours on FMLs have been well known, and it has been known that the crack propagation is similar to the monolithic metal [2-6]. On the FMLs, the crack propagation is obgserved on the metal laminate but over the wake of the crack, the fibre composite is still intact causing fibre bridging on the wake, thus, it reduces the effective stress advancing the 6

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“…The crack is defined as long crack when the unaided eye can observe the crack. The long crack only takes place on the metal laminate whereas the fibre reinforced composite is still intact over the crack region [2,[7][8][9][10][11][12][13][14]. The crack propagation rate on the metal laminate of FMLs is lower than that occurs on a monolithic metal.…”

Section: Introductionmentioning

confidence: 99%

Effect Surface Roughness on Fatigue Crack Propagation Behaviour of Fibre Metal Laminates (FMLs)

Purnowidodo

Arief

Iman

2019

IJAME

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In the present study, the effect of surface roughness of the metal lamina at the interface of fibre metal laminates (FMLs) on the crack propagation behaviours was investigated for different fibre orientation. The FMLs was made by combining the aluminium and the carbon fibre-epoxy composite lamina. The increasing of the aluminium surface roughness at the interface causes the tensile strength to increase for every fibre orientation. The highest tensile strength is 282 and 367 MPa., respectively for fibre orientation 0°/90° and -45°/45° when the surface roughness is 2.89 mm. The increasing surface roughness causes the development of the delamination taking place at the interface is more difficult, and it leads to the shear strength at the interface to increase. Because of this, the tensile strength increases. However, the lifetime is not only influenced by the interface shear strength but also the stress concentration just in front of the crack tip as well as the surface roughness itself leading to the crack to be initiated from the rougher surface. The longest fatigue life is 180 000 cycles in the case of the fibre orientation 0°/90° with the surface roughness of 1.78 mm, and in the case of fibre orientation of -45°/+45° the longest fatigue life is 420 000 cycles when the surface roughness is 0.33 mm. The results of the study show that the surface roughness affects the tensile strength and crack propagation behaviour.

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A two-dimensional in situ fatigue cohesive zone model for crack propagation in composites under cyclic loading

Cited by 35 publications

References 40 publications

An Incremental Cohesive Law for Delamination Under a Mixed Mode Loading

An Incremental Cohesive Law for Delamination Under a Mixed Mode Loading

The relation of crack propagation behaviour and delamination on Fibre Acrylic Laminates under various cyclic conditions

Effect Surface Roughness on Fatigue Crack Propagation Behaviour of Fibre Metal Laminates (FMLs)

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