New investigation of delamination using the VCCT method to predict the damage in bonded composite repair plates subjected to tensile load

Talbi, Sofiane; Salem, Mokadem; Mechab, Belaïd; Ghomari, Tewfik; Allem, Ahmed; Bachir Bouiadjra, Belabbes; Mehdi, Benelmaarouf

doi:10.1108/ijsi-11-2023-0113

Cited by 3 publications

(1 citation statement)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Delamination propagation can be numerically simulated in FE analysis using approaches based on fracture mechanics, such as the Virtual Crack Closure Technique (VCCT) [17,18], or damage mechanics, such as the Cohesive Zone Modelling (CZM) [19][20][21]. In the last decades, both these approaches have been modified to take into account the R-curve effects.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of the R-Curve Effect in Delamination of Composite Materials Using Cohesive Elements

Raimondo

2024

Applied Sciences

View full text Add to dashboard Cite

This paper presents a numerical investigation of the R-curve effect in delamination propagation in composite materials. The R-curve effect refers to the phenomenon whereby resistance to crack propagation increases with the advancement of the delamination, due to toughening mechanisms, such as fiber bridging. Numerical models often neglect this effect assuming a constant value of the fracture toughness. A numerical approach based on cohesive elements and on the superposition of two bilinear traction-separation laws is adopted here to accurately predict the R-curve effect in skin-doubler composite specimens subjected to three-point bending tests. The carbon-epoxy material presents two different sensitivities to the fiber bridging phenomenon resulting in two different R-curves. Comparisons with literature experimental data, in terms of load and delaminated area vs. applied displacement, and ultrasonic C-scan images show the effectiveness of the adopted approach in simulating the R-curve effect. The predicted numerical stiffness aligns with the experimental scatter, although the maximum load is slightly underestimated by approximately 15% compared with the average experimental results. The numerical model accurately predict the R-curve effect observed in the experimental data, demonstrating a 31% increase in the maximum load for the material configuration exhibiting greater sensitivity to fiber bridging.

show abstract

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of the R-Curve Effect in Delamination of Composite Materials Using Cohesive Elements

Raimondo

2024

Applied Sciences

View full text Add to dashboard Cite

show abstract

New Prediction Of Cracks Propagation In Repaired Steel Plate With Bonded Composite Patch At Cyclic Loading

Maachou,

Mechab,

Bouiadjra

et al. 2024

Acta Mechanica Et Automatica

View full text Add to dashboard Cite

This study presents a numerical prediction of the fatigue life of steel panels repaired by a composite patch. The effect of length cracks, the stress ratio R and properties of the patch is presented. The obtained results show that the bonded composite repair significantly reduces the stress intensity factors at the tip of repaired cracks. The results are in a good agreement with those in the literature. The Monte Carlo method is used to predict the distribution function governing crack propagation in fatigue analysis. In computing the failure probability of the structure, we consider the statistical uncertainty associated with key variables, along with the previously discussed model uncertainty. The results obtained highlight the considerable impact of variations in crack length and stress ratio on the distribution function. Notably, uncertainty in these parameters significantly amplifies the probability of structural failure in plates, thereby diminishing overall structural durability.

show abstract

Advances in Finite Element Modeling of Fatigue Crack Propagation

Alshoaibi,

Fageehi

2024

Applied Sciences

View full text Add to dashboard Cite

Fatigue crack propagation is a critical phenomenon that affects the structural integrity and lifetime of various engineering components. Over the years, finite element modeling (FEM) has emerged as a powerful tool for studying fatigue crack propagation and predicting crack growth behavior. This study offers a thorough overview of recent advancements in finite element modeling (FEM) of fatigue crack propagation. It highlights cutting-edge techniques, methodologies, and developments, focusing on their strengths and limitations. Key topics include crack initiation and propagation modeling, the fundamentals of finite element modeling, and advanced techniques specifically for fatigue crack propagation. This study discusses the latest developments in FEM, including the Extended Finite Element Method, Cohesive Zone Modeling, Virtual Crack Closure Technique, Adaptive Mesh Refinement, Dual Boundary Element Method, Phase Field Modeling, Multi-Scale Modeling, Probabilistic Approaches, and Moving Mesh Techniques. Challenges in FEM are also addressed, such as computational complexity, material characterization, meshing issues, and model validation. Additionally, the article underscores the successful application of FEM in various industries, including aerospace, automotive, civil engineering, and biomechanics.

show abstract

New investigation of delamination using the VCCT method to predict the damage in bonded composite repair plates subjected to tensile load

Cited by 3 publications

References 35 publications

Numerical Investigation of the R-Curve Effect in Delamination of Composite Materials Using Cohesive Elements

Numerical Investigation of the R-Curve Effect in Delamination of Composite Materials Using Cohesive Elements

New Prediction Of Cracks Propagation In Repaired Steel Plate With Bonded Composite Patch At Cyclic Loading

Advances in Finite Element Modeling of Fatigue Crack Propagation

Contact Info

Product

Resources

About