Failure Analyses of Propagation of Cracks in Repaired Pipe Under Internal Pressure

Salem, Mehdi; Mechab, Boubaker; Berrahou, Mohamed; Bouiadjra, B. Bachir; Sérier, B.

doi:10.1007/s11668-019-00592-3

Cited by 11 publications

(7 citation statements)

References 14 publications

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“…Before repairing the structure, the corroded area is cleaned to remove the Corrosion film and keep the same mechanical properties. We will analyze this shape in two regular shapes: circular with radius R=30mm and square with dimension L =30mm, the patch thicknesses e pat = 1.5mm glued with FM73 adhesive with a thickness e ad =0.127mm.All mechanical and thermal properties materials are shown in Table 1; Obtained from Salem et al (2017). The three-dimensional finite element method is used to analyze the model of this study using the ABAQUS software (Abaqus 2007).…”

Section: Simulation Partmentioning

confidence: 99%

“…The principle of these repairs is to remove the damaged area (the corrosion layer) and cover it with a composite patch. In the literature, several references (Salem et al2019;Salem et al 2017;Benzineb et al 2022)referred to the repair of composite materials by patches, which were classified into two categories: external and internal patches.…”

Section: Experimental Partmentioning

confidence: 99%

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Analysis of the effect of localized corrosion shape on a cracked and notched 2024 AL plate repaired with composite patch under thermo-mechanical loading

Benzineb

Berrahou

Leila

2023

Lat. Am. j. solids struct.

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This study highlights the analysis of corrosion shape effects under thermo-mechanical loading on the development of damage in corroded and cracked aluminum plates. This study is divided into two parts, the numerical analytical part, was performed to compare the effect of the corrosion geometry on the repair and adhesive damage; We analyzed the effects of damaged areas on the level of corrosion in the adhesive layer of three composite materials (boron/epoxy, glass/epoxy, and graphite/epoxy), and studied the change of the stress intensity factor for circle or square-shaped corrosion. The second part related to an experimental study of the corrosion shape on the ultimate strength of the damaged plate repaired by the boron/epoxy composite material. The results obtained, indicated that the effect of the circular shape of corrosion is small compared to the square shape. The type of composite material (boron / epoxy) has proven its optimal effect on repair.

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Section: Simulation Partmentioning

confidence: 99%

Section: Experimental Partmentioning

confidence: 99%

Analysis of the effect of localized corrosion shape on a cracked and notched 2024 AL plate repaired with composite patch under thermo-mechanical loading

Benzineb

Berrahou

Leila

2023

Lat. Am. j. solids struct.

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“…However, it is also useful to have simplified estimation methods for routine engineering calculations. Accordingly, the probabilistic EPFM analyses based on both methods have been reported [26,27] T The uncertainties are related to load estimation, geometrical fluctuations and scatter of material properties; these parameters are modeled by random variables, described by distribution type and parameters (i.e., mean and coefficient of variation COV). For design purpose, the system uncertainties should be controlled in order to avoid unsafe situations.…”

Section: Random Parameters and Fracture Responsementioning

confidence: 99%

Probabilistic Elastic-plastic Fracture Mechanics Analysis of Propagation of Cracks in Pipes under Internal Pressure

Mechab

Medjahdi

Salem

et al. 2020

Frattura Ed Integrità Strutturale

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This study presents a three dimensional finite element method analysis of semi-elliptical surface cracks in pipes under internal pressure load. In the elastic–plastic case, estimates of the J-integral are presented for various ratios including crack depth to pipe thickness (a/t) and strain hardening index in the (R-O) Ramberg-Osgood (n). Finally, failure probability is accessed by a statistical analysis for uncertainties in loads and material properties, and structural reliability and crack size. The Monte Carlo method is used to predict the distribution function of the mechanical response. According to the obtained results, we note that the stress variation and the crack size are important factors influencing on the distribution function of (J/Je).

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“…The bonded composite repair has been recognized as an efficient and economical method to extend the service life of cracked aircraft structures and the fatigue life of cracked aluminum components was the first otherwise the pioneer of these searches in the aeronautical and maritime research laboratory of the Royal Australian Air Force (Alan Baker, 1993). Several authors (Salem et al 2023;Salem et al 2021;Ibrahim et al 2018;Bisagni et al 2013 andSalem et al2018) analyzed crack growth of the cracked aluminum plates repaired with composite patch. The Jintegral fracture parameter has been extensively used in assessing fracture integrity of cracked engineering structures, which undergo large deformation.…”

Section: Introductionmentioning

confidence: 99%

Numerical and Analytical Prediction of the Propagation of Delamination of Bonded Composite Repair Plates Under Mechanical Loading

Talbi,

Salem,

Mechab

et al. 2023

JSSCM

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This study presents a numerical and analytical prediction of delamination of a repaired joint due to a defect in the composite under tensile loading. The three-dimensional finite element method is used to predict the delamination of a repaired plate with the VCCT method. The effects of the position of the delamination, percentage of the delaminated area, thickness and properties of the patch are presented. It can be noted that the propagation of delamination is significant only at node A and the analyzed model delaminated in mode I. The numerical results are in good agreement compared with the analytical solution found in the literature. It can be seen that the stiffness of the reinforcement material is strongly dependent on the mechanical properties of the patch interface. These results make it possible to choose the carbon/epoxy patch for the repair even if the graphite/epoxy has a high modulus of elasticity. The thickness and the mechanical properties parameter have a significant effect on increasing the durability of the structure.

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Failure Analyses of Propagation of Cracks in Repaired Pipe Under Internal Pressure

Cited by 11 publications

References 14 publications

Analysis of the effect of localized corrosion shape on a cracked and notched 2024 AL plate repaired with composite patch under thermo-mechanical loading

Analysis of the effect of localized corrosion shape on a cracked and notched 2024 AL plate repaired with composite patch under thermo-mechanical loading

Probabilistic Elastic-plastic Fracture Mechanics Analysis of Propagation of Cracks in Pipes under Internal Pressure

Numerical and Analytical Prediction of the Propagation of Delamination of Bonded Composite Repair Plates Under Mechanical Loading

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