Experimental investigations on fatigue crack growth of repaired thick aluminium panels in mixed-mode conditions

Hosseini‐Toudeshky, Hossein; Bakhshandeh, Sadra; Mohammadi, Bijan; Daghyani, Hamid Reza

doi:10.1016/j.compstruct.2006.04.021

Cited by 11 publications

(10 citation statements)

References 6 publications

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“…However, in the real applications, components are subjected to various forms of loading conditions and the crack growth and failure of them occur due to the conjoiner of such loadings. There are not many publications on single-side repaired panels in mixed-mode conditions (Hosseini-Toudeshky et al 2006a, b;, 2008Bouiadjra et al 2002;Chung and Yang 2003). The previously performed works mainly investigate the fatigue crack growth life and crack propagation direction of the repaired panels in mixed-mode conditions using experimental method or containing assumptions to simplify the numerical simulations.…”

Section: Introductionmentioning

confidence: 99%

“…They did not perform any fatigue crack propagation analysis in their works. Hosseini-Toudeshky et al (2006a, b;, 2008 performed experimental and three dimensional finite element analyses to obtain the fatigue crack growth lives and crack trajectories of the repaired panels containing a central inclined crack. In these analyses, it was assumed that the crack-front remains perpendicular to the panel's surfaces during the crack propagation and the effect of K III fracture parameter was neglected.…”

Section: Introductionmentioning

confidence: 99%

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Mixed-mode 3-D crack propagation of repaired thin aluminum panels using single-side composite patches

2008

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Three dimensional finite element analyses of the single-side repaired panels using glass/epoxy composite are performed considering the general mixed mode conditions and real crack-front shape modeling (RCFM) during the crack propagation procedure. Variations of the fracture parameters through the thickness of the panels for the initial crack configuration and crack growth behavior of the repaired panels with various patch lay-ups are investigated. The effect of considering K III on the small and large crack growth of repaired panels are also studied. The obtained lives are compared with the previously obtained lives using simplified FEM procedure and experimental results by the authors.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mixed-mode 3-D crack propagation of repaired thin aluminum panels using single-side composite patches

2008

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“…Hosseini-Toudeshky et al [3][4][5][6][7] performed 3-D finite elements fatigue crack growth analysis of single-side repaired aluminium panels to predict the crack trajectory, actual crack-front shape and crack growth life for various panels with cracks in mode-I and mixed mode conditions. They also performed experimental analyses of repaired panels using different composite patches under various fracture mode conditions to investigate the accuracy of the developed numerical methods and to obtain the realistic crack-front [3,[8][9][10]. Their experiments showed that debonding or delaminated patch area may also affect the crack propagation phenomena, Fig.…”

mentioning

confidence: 98%

“…Balzani and Wagner [14], developed a solid-like interface element, to analyze delamination of composite Fig. 1 Typical experimental debonding of composite patch from the cracked panel [9] laminates under monotonic static loading. Turon et al [15] developed a damage model based on the cohesive element concept for the analyses of fatigue delamination propagation of DCB and ENF specimens under quasi-static and high cycle fatigue loadings.…”

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confidence: 99%

Fatigue Debonding Analysis of Repaired Aluminium Panels by Composite Patch using Interface Elements

2011

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Repaired panels with composite patches subjected to fatigue loading may fail due to the progressive debonding between the composite patch and aluminium panel. The objective of this paper is to study the initiation and propagation of a possible fatigue debonding in the adhesive layer while the crack also growths in the panel for single-side repaired aluminium panels. For this purpose three dimensional finite elements method with a thin layer solid like interface element is employed. Fracture mechanics approach is used for the analysis of crack growth in aluminium panel and the interface elements with fatigue constitutive law for mixed mode debonding growth in the adhesive layer. A user element routine and a damage model material routine were developed to include the interface element and to simulate the initiation and propagation of damage in adhesive layer under cyclic loading. It is shown that, the debonding propagation and crack growth rate of the repaired panels depend on the composite patch material and interface bonding properties significantly. It is also shown that using of patch material with higher elastic module leads to the faster damage or debonding growth in the adhesive layer during the fatigue loading.

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“…In this field, Hosseini Toudeshky et al [5][6][7] Mall et al [8] and Bouiadjra et al [9,10] performed some finite element and experimental researches in order to determine the influence of various characteristics of this technique on enhancement of service life and reduction of crack growth in the aluminum plates under tension and cyclic loading. The authors of present paper investigated the influence of FRP pultruded sheets with various aspect ratios patched on the plates on the buckling load of the plates through FE modeling, [11].…”

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confidence: 99%

Enhancing Ultimate Compressive Strength of Notch Embedded Steel Cylinders Using Overwrap CFRP Patch

Kabir

Nazari

2011

Appl Compos Mater

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In this study, the application of Fiber Reinforced Polymer (FRP) patch for strengthening of the damaged area in thin walled steel cylinders under compression loading was investigated. In this direction, some experimental tests were carried out on the selected notch induced specimens with unique diameter-to-thickness ratio (D/t). The obtained results were compared to the intact cylinder in order to find out the reduction effect of notch on the buckling load of cylinders. Following that, the notched specimens were treated using externally FRP by wrapping around the notched area and the stability strength of the retrofitted specimens was measured experimentally. The investigation was also carried out in numerical analysis using FEM in order to develop the proposed technique for determination of optimum FRP configurations and also better understanding of the experimental observations considering the nonlinear behavior and failure modes for composite member.

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Experimental investigations on fatigue crack growth of repaired thick aluminium panels in mixed-mode conditions

Cited by 11 publications

References 6 publications

Mixed-mode 3-D crack propagation of repaired thin aluminum panels using single-side composite patches

Mixed-mode 3-D crack propagation of repaired thin aluminum panels using single-side composite patches

Fatigue Debonding Analysis of Repaired Aluminium Panels by Composite Patch using Interface Elements

Enhancing Ultimate Compressive Strength of Notch Embedded Steel Cylinders Using Overwrap CFRP Patch

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