Fatigue behavior of thick center cracked aluminum plates repaired by two-sided composite patching

Hao, Jianbin; Li, Xudong; Mu, Zhitao

doi:10.1016/j.matdes.2015.09.011

Cited by 19 publications

(9 citation statements)

References 18 publications

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“…ABAQUS provides an efficient method to determine J -integral values through a 3D modeling. 19 J -integral is theoretically path independent, but because of numerical singularities it is widely accepted that the first contour does not provide efficient results. Therefore, it is better to extract the SIFs from the second contour or even further from the crack tip, in order to get a convergent value.…”

Section: Multi-scale Numerical Modelingmentioning

confidence: 99%

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Bonded composite patch repair’s fiber VF effects on damaged Al-plates fatigue employing a multi-scale algorithm

Moallem

Barzegar

Abedian

et al. 2020

Journal of Reinforced Plastics and Composites

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Recently, bonded composite patch repair, because of its significant advantages over traditional methods, has been highly accepted in several industries, particularly in aerospace applications. In this paper, a multi-scale finite element algorithm is proposed to simulate crack growth of repaired plates under fatigue load by considering the effects of composite micro-scale properties. The algorithm is verified through conducting an experimental set up and the proposed model is in reasonable agreement with experiments. The influences of different fiber volume fractions (VF), number of layers and fiber orientation of composite patch on the fatigue responses of adhesively bonded patch are investigated. For this purpose, Python scripts are written to automatically increase the size of the crack in ABAQUS. In this study, glass–epoxy and boron–epoxy patches are selected with volume fraction 0.1 to 0.7, the numbers of layers of 4, 8 and 16 as well as 5 different fiber orientation lay-ups. The maximum enhancement of fatigue life experimented by the variation of volume fraction is 133% in the mentioned range. Also, increment in the number of cycles by about 287% and 172% were seen per different number of layers and fiber orientation, respectively.

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Section: Multi-scale Numerical Modelingmentioning

confidence: 99%

“…Jian-Bin et al. 19 calculated the SIF by using 3D FEM, providing foundations to the prediction of fatigue life of two-sided repaired specimens based on Paris' law. They achieved a good agreement between their results and that of the experimental study.…”

Section: Introductionmentioning

confidence: 99%

Bonded composite patch repair’s fiber VF effects on damaged Al-plates fatigue employing a multi-scale algorithm

Moallem

Barzegar

Abedian

et al. 2020

Journal of Reinforced Plastics and Composites

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“…In patched cases, the experimental results of the plates were close to the numerical results. Jian-Bin et al 24 investigated the response of aluminum plates with notches at the center with double-sided composite patches, under numerical and experimental methods. According to the fatigue test results, they found that aluminum plates with a 10 mm crack in the center were 31 times more durable than the samples that were not repaired, as a result of repairing with double-sided patches.…”

Section: Introductionmentioning

confidence: 99%

Numerical model for composite patch repair of notched aluminum plates under impact loading

Çalışkan

Ekici

Bayazit

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part L:

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The damaged area for various structures can be effectively repaired using composite materials. With the effect of impact, damage can occur that cannot be clearly seen in the inner structure of a laminated composite. This can cause delamination and other damage modes in layered composite structures. In this study, three-dimensional dynamic progressive damage analysis was performed in adhesively bonded composite patch-repaired metal notched plates under impact loads to investigate the effect of external composite patch material and thickness. Three-dimensional Hashin damage models were used for the progressive damage model. A user-defined subroutine, VUMAT was written to transfer the damage models to finite element code. By writing a separate script in Python language that relates to the damage models, the weakness in the laminate of the composite patch was transferred to the finite element model with a different degradation model proposed. It was found that plastic deformations occurring after impact damage in the notched metal plates was prevented by the use of composite patches. While glass and carbon fiber exhibit similar behavior at lower impact velocities, the progress of damage is prevented by increasing patch thickness. These behaviors were confirmed by the numerical model and showed an advanced agreement with experimental results.

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“…A numerical simulation on a laterally cracked plate, repaired by two composite patches, namely boron/epoxy and carbon/epoxy, was proposed in [5]. The fatigue life and fatigue crack growth rates of 10 mm thick aluminum panels repaired with two-sided bonded patches were evaluated in [6]; also, the stress intensity factor (SIF) values of the patched plates and the fatigue life prediction of two-sided repaired plates were investigated by using the 3-D finite element method (FEM). The study of static analysis for different patch shapes like circle, rectangle, square, ellipse, and octagon was considered.…”

Section: Introductionmentioning

confidence: 99%

Study of mechanical behavior by fatigue of a cracked plate repaired by different composite patches

Moulgada

Kaci

Zagane

et al. 2021

Frattura Ed Integrità Strutturale

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This research is based on the study of the fatigue behavior of an aluminum alloy plate with a central crack. The plate is subjected to a tensile loading on its lower and upper parts. Several parameters were highlighted, such as the loading effect with a load ratio R = 0. The effects of the load ratio on both the repaired and not repaired plates, by two composite patches, which are boron/epoxy and graphite/epoxy, were investigated, as well as the effect of the plate material on plate life, comparing different materials

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Fatigue behavior of thick center cracked aluminum plates repaired by two-sided composite patching

Cited by 19 publications

References 18 publications

Bonded composite patch repair’s fiber VF effects on damaged Al-plates fatigue employing a multi-scale algorithm

Bonded composite patch repair’s fiber VF effects on damaged Al-plates fatigue employing a multi-scale algorithm

Numerical model for composite patch repair of notched aluminum plates under impact loading

Study of mechanical behavior by fatigue of a cracked plate repaired by different composite patches

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