Reliability analysis of metal‐composite adhesive joints under debonding modes I, II, and I/II using the results of experimental and FEM analyses

Delbariani-Nejad, Ali; Malakouti, M.; Farrokhabadi, Amin

doi:10.1111/ffe.13078

Cited by 21 publications

(9 citation statements)

References 32 publications

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“…An in-depth finite element analysis on Mode-I and mixed-mode I/II by Zhao et al [ 14 ] found that the interface strength of composite laminates within a certain boundary has minuscule effects on the simulation results. This insignificant effect of interface strength is also stated by Delbariani et al [ 15 ] in their study of metal–composite joints. Tsokanas and Loutas [ 16 ] expressed the complications in analytical modelling of dissimilar materials due to disparate ductility and thermal behaviour which have substantial effects on delamination properties.…”

Section: Introductionsupporting

confidence: 69%

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Thermal Delamination Modelling and Evaluation of Aluminium–Glass Fibre-Reinforced Polymer Hybrid

et al. 2021

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This paper aims to propose a temperature-dependent cohesive model to predict the delamination of dissimilar metal–composite material hybrid under Mode-I and Mode-II delamination. Commercial nonlinear finite element (FE) code LS-DYNA was used to simulate the material and cohesive model of hybrid aluminium–glass fibre-reinforced polymer (GFRP) laminate. For an accurate representation of the Mode-I and Mode-II delamination between aluminium and GFRP laminates, cohesive zone modelling with bilinear traction separation law was implemented. Cohesive zone properties at different temperatures were obtained by applying trends of experimental results from double cantilever beam and end notched flexural tests. Results from experimental tests were compared with simulation results at 30, 70 and 110 °C to verify the validity of the model. Mode-I and Mode-II FE models compared to experimental tests show a good correlation of 5.73% and 7.26% discrepancy, respectively. Crack front stress distribution at 30 °C is characterised by a smooth gradual decrease in Mode-I stress from the centre to the edge of the specimen. At 70 °C, the entire crack front reaches the maximum Mode-I stress with the exception of much lower stress build-up at the specimen’s edge. On the other hand, the Mode-II stress increases progressively from the centre to the edge at 30 °C. At 70 °C, uniform low stress is built up along the crack front with the exception of significantly higher stress concentrated only at the free edge. At 110 °C, the stress distribution for both modes transforms back to the similar profile, as observed in the 30 °C case.

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Section: Introductionsupporting

confidence: 69%

“…Mode-I and Mode-II delamination properties at each temperature[27,28]. 15. 12.47 ± 0.46 7.25 ± 0.08 239.97 ± 7.10 134.50 ± 1.91 91.97 ± 2.59 FP (N) 34.51 ± 2.42 22.04 ± 1.23 10.55 ± 0.16 297.3 ± 4.63…”

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confidence: 99%

Thermal Delamination Modelling and Evaluation of Aluminium–Glass Fibre-Reinforced Polymer Hybrid

et al. 2021

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“…[208] Alternatively, a model-based characterization of the stress state is also possible . [198,[209][210][211] For example, the analytical model by Volkersen was considered in [198] to quantify the shear stress inside the adhesive in composite-aluminium patches with randomly varying adhesive thickness. The maximum shear stress was then extracted from the numerical solution of the model and inserted in equation 17 as representative measure of the stress driving the occurrence of failure in the adhesive joint.…”

Section: Probabilistic Methodsmentioning

confidence: 99%

A review on failure theories and simulation models for adhesive joints

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Barroso-Caro

Carraro

et al. 2021

The Journal of Adhesion

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In the framework of the Cost Action CERTBOND (Reliable roadmap for certification of bonded primary structures), a wide group of researchers from 27 European Countries have had the opportunity to work on the topic of certification of bonded joints for primary structural applications from different engineering sectors such as the aerospace, automotive, civil engineering, wind energy and marine sectors. Since virtual testing and optimization are basic tools in the certification process, one of the key objectives of CERTBOND is to critically review some of the available models and failure theories for adhesive joints. The present paper summarizes the outcome of this task. Nine different models/theories are described in detail. Specifically, reviewed are the Classical Analytical Methods, the Process Zone Methods, Linear Elastic Fracture Mechanics (LEFM), the Virtual Crack Closure Technique (VCCT), the Stress Singularity Approach, Finite Fracture Mechanics (FFM), the Cohesive Zone Method (CZM), the Progressive Damage Modeling method and the Probabilistic methods. Also, at the end of the paper, the modeling of temperature effects on adhesive joints have been addressed. For each model/theory, information on the methodology, the required input, the main results, the advantages and disadvantages and the applications are given.

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“…VCCT and CZM show advantages in different aspects; therefore, in recent years, more and more researches are more inclined to use the method of combining both the models. [32][33][34] Many studies nowadays are based on the delamination failure calculation of DCB, ELS, or other similar simple standard tests, with uniform thickness and straight delamination front edge, [35][36][37][38] and few studies were made on the delamination process of non-uniform materials. Shokrieh et al 35 studied the influence of curved delamination front on toughness of multidirectional DCB specimens and established a methodology to predict the maximum delamination toughness (G Imax ) of multidirectional DCB specimens without performing any experiments.…”

Section: Introductionmentioning

confidence: 99%

Theoretical and numerical investigation of mode‐I delamination of composite double‐cantilever beam with partially reinforced arms

Pan

Jiang

et al. 2021

Fatigue Fract Eng Mat Struct

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In this paper, a theoretical analysis model and two simulation methods are applied to characterize the quasi-static and fatigue delamination of composite double-cantilever beam (DCB) with partially reinforced arms. The test data of partially reinforced DCB were used as benchmark to verify the analysis model and simulation, and cohesive zone models (CZMs) and virtual crack closure technique (VCCT) are used in simulation. It is shown that the partially reinforced DCB has a unique double-peak load-displacement relationship, rising and sudden release of R-curve near the reinforced area, and produces instability development. By comparing the results of simulation and experiment, the simulation based on the exponential CZM can calculate the delamination of partially reinforced DCB under both quasi-static and fatigue loading, while VCCT method will generate a straight delamination front edge under the reinforced area and underestimates the influence of the previous load on the later due to the lost of microdamage from previous loading.

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Reliability analysis of metal‐composite adhesive joints under debonding modes I, II, and I/II using the results of experimental and FEM analyses

Cited by 21 publications

References 32 publications

Thermal Delamination Modelling and Evaluation of Aluminium–Glass Fibre-Reinforced Polymer Hybrid

Thermal Delamination Modelling and Evaluation of Aluminium–Glass Fibre-Reinforced Polymer Hybrid

A review on failure theories and simulation models for adhesive joints

Theoretical and numerical investigation of mode‐I delamination of composite double‐cantilever beam with partially reinforced arms

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