Analytical and experimental investigations of crack propagation in adhesively bonded joints with the Mixed Mode Bending (MMB) test Part I: Macroscopic analysis &amp; Digital Image Correlation measurements

Salem, N. Ben; Jumel, Julien; Budzik, Michal K.; Shanahan, M. E. R.; Lavelle, Florian

doi:10.1016/j.tafmec.2014.05.006

Cited by 19 publications

(3 citation statements)

References 46 publications

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“…Using this approach, the dissipated energy in the FPZ of ductile adhesives is considered in the final result of the fracture energy. Other researchers based their crack length measurement on digital image correlation (DIC) recordings to avoid the difficult crack length monitoring [47,48].…”

Section: Introductionmentioning

confidence: 99%

On the dynamic response of adhesively bonded structures

Lißner

Alabort

Erice

et al. 2020

International Journal of Impact Engineering

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Fracture mechanics experiments are used to investigate the rate-dependent failure of adhesively bonded structures under different deformation modes: I, II and I/II. First, the high-rate mechanical response of the adhesive interface is analysed with a newly developed method -which relies entirely upon digital image correlation. The method was purposely designed to avoid any dynamic effects which may be present. This novel method is verified against quasi-static standard methods showing good agreement. Finally, simulations of the experiments are used to validate a cohesive zone model of the adhesive. The ability of the model to predict cohesive failure under a wide range of strain rates and deformation modes is demonstrated.

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Section: Introductionmentioning

confidence: 99%

On the dynamic response of adhesively bonded structures

Lißner

Alabort

Erice

et al. 2020

International Journal of Impact Engineering

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“…The MMB test excels the other tests by enabling to vary the mixed-mode ratio up to pure tension and shear, and is often a preferred choice to build fracture envelopes of adhesives with significant data points. 13,14 The SLB specimen, developed by Yoon and Hong, 15 is relatively easy to fabricate and test in three-point bending. The geometry is similar to that of the DCB and ENF tests, but one of the adherends is shorter at the cracked portion, such that the bending load induces both tension and shear at the crack tip due to absence of support to the lower adherend.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of the mixed-mode fracture of bonded joints depending on the adhesive thickness

Macedo

Campilho

Silva

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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The mixed-mode strength of bonded joints can be predicted by techniques such as cohesive zone models (CZM), which requires the estimation of the adhesive strength and fracture toughness ( GC). Under the scope of fracture properties, the tensile and shear fracture toughness ( GIC and GIIC, respectively) and the corresponding mixed-mode behaviour are particularly relevant. Moreover, these parameters highly depend on the adhesive thickness ( tA), making it relevant to validate and propose CZM laws for bonded joint design. This work numerically addressed the tA influence on the mixed-mode fracture process of adhesive joints. For this purpose, single-leg bending (SLB) test experimental data was used, considering joints with composite adherends and a ductile adhesive, and tA from 0.1 to 2.0 mm. A numerical CZM analysis was performed, including the experimental and numerical load-displacement ( P- δ) curves’ comparison for validation, followed by the CZM law estimation and fracture envelope validation, for all tA. The effect of the different CZM parameters on the results was finally evaluated. Overall, it was possible to numerically ascertain the tA effect on the fracture behaviour of adhesive joints and to propose a numerical technique for mixed-mode bonded joint analysis.

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“…It is supposed that a stable crack growth is required for reliable energy release rate curves determination. Different type of test configurations have been used to investigate the mixed-mode I/II fracture of different materials, such as composite laminates [1][2][3], wood [4][5][6], or adhesively bonded joints [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%