Fatigue crack growth of composite patch repaired Al-alloy plates under variable amplitude loading

Seriari, Fatima Zohra; Benachour, Mustapha; Benguediab, M.

doi:10.3221/igf-esis.43.03

Cited by 3 publications

(2 citation statements)

References 39 publications

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“…A cracked base plate’s SERR was calculated using an analytical model that was created. Additionally, the stress concentration factors [ 5 , 6 ], J-integral [ 7 , 8 , 9 ], and fatigue behavior [ 10 , 11 ] have played an important role in fracture parameters, and they have been reduced using a bonded composite patch.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Structural Damage Repair with Single and Double-Sided Composite Patches through the Finite Element Analysis and Taguchi Method

et al. 2023

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Over the last four decades, numerous studies have been conducted on the use of bonded composite repairs for aircraft structures. These studies have explored the repair of damaged plates through experimental, numerical, and analytical methods and have found that bonded composite repairs are effective in controlling crack damage propagation in thin plates. The use of double-sided composite repairs has been found to improve repair performance within certain limits. This study focuses on these limits and optimizes double-sided composite repairs by varying adhesive bond and composite patch parameters. The optimization process begins with a finite element analysis to determine the stress intensity factor (SIF) for various variables and levels, followed by the application of the Taguchi method to find the optimal combination of parameters for maximizing the normalized SIF. In conclusion, we successfully determined the stress intensity factor (SIF) for various variations and normalized it for optimization. An optimization study was then performed using the Taguchi design and the results were analyzed. Our findings demonstrate the repair performance of bonded composite patches using a cost-effective and energy-efficient approach.

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Section: Introductionmentioning

confidence: 99%

Optimization of Structural Damage Repair with Single and Double-Sided Composite Patches through the Finite Element Analysis and Taguchi Method

et al. 2023

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“…Also for the type of composite used in the repair, H. Hosseini and co-workers in [23] found that, for a 45° inclined crack in a thick aluminum panel repaired by an asymmetric glass / epoxy patch, the lifetime during the crack propagation is significantly improved. Among the positive effects on the repair, [24] studied the effect of overload during the fatigue test. As a result, it was found that overloading extends the service life of the repaired structure.…”

Section: Introductionmentioning

confidence: 99%

A 3D analysis of crack-front shape of asymmetric repaired aluminum panels with composite patches

Djebli

Besseghier

Bendouba

et al. 2019

Frattura Ed Integrità Strutturale

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Through this study, a numerical simulation based on 3D in order to investigate the effect of crack-front shape on the stress intensity factor and fatigue crack growth behavior of center cracked aluminum plate repaired asymmetrically with bonded composite patch. Consequently, skew degree it is a significant effect on stress intensity factor (SIF) distribution along the crack front in thick panels more than in thin panels. Moreover, fatigue life was calculated using different averaged stress intensity factor of patched panel determined from uniform crack front model and skew crack front model obtained from FEM and when comparing fatigue life values obtained from the finite element model with experimental values were shown a good agreement.

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A Review on Reductions in the Stress-Intensity Factor of Cracked Plates Using Bonded Composite Patches

et al. 2022

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In aerospace engineering applications, lightweight material structures are considered to perform difficult service conditions and afford energy efficiency. Therefore, composite materials have gained popularity due to their light weights and high performances in structural design. Mechanical loads and environmental conditions primarily create damage to structural materials, thus numerous studies have considered the repair of the damaged structure. Bonded composite repairs are generally chosen, as they provide enhanced stress-transfer mechanisms and joint efficiencies with the increased use of advanced composite materials in primary and secondary aircraft structural components. Thus, it is essential to have reliable and repeatable bonded repair procedures to restore damaged structural components. However, composite bonded repairs, especially with primary structures, present several scientific challenges in the current existing repair technologies. In this review, a study has been done on the bonded composite repair of damaged structures with the stress-intensity factor (SIF) as the parameter for defining the extent of failure by composite repair and unrepaired material structures. In this work, various types of repair methods and the techniques used by researchers are critically reviewed, and future opportunities are explored. The present study was limited to the composite and aluminium materials that are common in aerospace applications.

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Fatigue crack growth of composite patch repaired Al-alloy plates under variable amplitude loading

Cited by 3 publications

References 39 publications

Optimization of Structural Damage Repair with Single and Double-Sided Composite Patches through the Finite Element Analysis and Taguchi Method

Optimization of Structural Damage Repair with Single and Double-Sided Composite Patches through the Finite Element Analysis and Taguchi Method

A 3D analysis of crack-front shape of asymmetric repaired aluminum panels with composite patches

A Review on Reductions in the Stress-Intensity Factor of Cracked Plates Using Bonded Composite Patches

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