An investigation of in-plane dynamic behavior of adhesively-bonded composite joints under dynamic compression at high strain rate

Sassi, S.; Tarfaoui, Mostapha; Yahia, Hamza Ben

doi:10.1016/j.compstruct.2018.02.057

Cited by 38 publications

(24 citation statements)

References 37 publications

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“…32 During our test campaign carried out with Hopkinson bars, we always make sure to verify the various validation hypotheses, see our various papers on the subject in particular. 33,34 Figure 4 shows that the equilibrium condition is well verified. Table 5 presents the standard deviation and the mean value.…”

Section: Shpb Test Techniquementioning

confidence: 74%

Can a three-dimensional composite really provide better mechanical performance compared to two-dimensional composite under compressive loading?

Tarfaoui

Nachtane

2018

Journal of Reinforced Plastics and Composites

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A series of split Hopkinson pressure bar tests on two-dimensional and three-dimensional woven composites were presented in order to obtain a reliable comparison between the two types of composites and the effect of the z-yarns along the third direction. These tests were done along different configurations: in-plane and out-of-plane compression test. For the three-dimensional woven composite, two different configurations were studied: compression responses along to the stitched direction and orthogonal to the stitched direction. It was found that three-dimensional woven composites exhibit an increase in strength for both: in-plane and out-of-plane tests.

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Section: Shpb Test Techniquementioning

confidence: 74%

Can a three-dimensional composite really provide better mechanical performance compared to two-dimensional composite under compressive loading?

Tarfaoui

Nachtane

2018

Journal of Reinforced Plastics and Composites

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“…For the case of the vertical temperature profiles (Figure 12(a), (c) and (e)), one can observe a higher temperature at the incident and transmitted/specimen interfaces than that at the adhesive layer and this may be caused by either crushing/delamination of external layer or by friction effects at these strain rates. However, previous work 21,25–31 have proved that the friction effects are negligible under dynamic compressive tests using SHPB and the damage is caused only by the multiplication of the microscopic and macroscopic damage modes. Thus, the heating at the interfaces seems to be a result only of global matrix failure and not of friction effects.…”

Section: Damage Kineticsmentioning

confidence: 93%

Thermomechanical behavior of adhesively bonded joints under out-of-plane dynamic compression loading at high strain rate

Sassi

Tarfaoui

Yahia

2018

Journal of Composite Materials

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In this study, a new experimental approach in which the deformation, the damage kinetic, and the temperature are measured simultaneously during a high strain rate on adhesively bonded composite joints. Especially, our goal is to quantify the amount heat dissipation during impact and to identify the mechanisms that induce this dissipation. Out of plane dynamic compression tests were conducted on assembled specimens over a range of strain rate from 372 s−1 to 1030 s−1 using the Split hopkinson Pressure Bars technique. The specimen surface temperatures were monitored using an infrared camera. The increase in the strain rate has a dramatic effect on the stress–strain behavior producing a significant heat dissipation in the material. The infrared monitoring provides the spatial distribution of temperature that increase near the adhesive/adherent interfaces of the specimen. The observed temperature increase profiles clearly show that the stress concentration appears in the adhesive area and provide valuable information regarding the damage mechanisms and their role in the heat dissipation during dynamic loading conditions. The dependence of these results on strain rate indicates that there exists a correlation between the thermo-mechanical behavior and the strain rate effect, which might be useful when developping damage models taking into account the energy balance for adhesively bonded joints under impact loading conditions.

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“…Due to the excellent peel resistance and impact strength, these adhesive layers can be applied to structures such as in automobiles and wind turbines (e.g., to join composite blades to metal hubs). The dynamic performance of the structure can play a crucial role in these applications. Determining the high strain rate response of such structural adhesives requires not only the reliable experimental characterization but also the quantitative constitutive prediction.…”

Section: Introductionmentioning

confidence: 99%

Visco‐elasto‐plastic constitutive model of adhesives under uniaxial compression in a range of strain rates

Wang

2020

J of Applied Polymer Sci

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Determining the constitutive model of adhesives enables the prediction of the mechanical response of hybrid structures in which the adhesive is used. In this study, the stress-strain behavior of a two-component structural adhesive was first measured in uniaxial compression experiments at the strain rates ranging from 0.001 to 2600 s −1 for developing a constitutive model. It was found that the compressive response, including elastic modulus, yield strength, and plastic flow stress, is substantially influenced by the strain rate. In plastic deformation, the strain rate sensitivity is not constant but varies with the rate; moreover, strain softening and hardening dominate the plastic deformation at low and high strains, respectively. A visco-elasto-plastic constitutive model was then proposed for the adhesive, integrating the strain rate sensitivity that was quantified by empirical equations. The model which was validated can reliably represent the strain rate dependent compressive behavior of the adhesive.

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An investigation of in-plane dynamic behavior of adhesively-bonded composite joints under dynamic compression at high strain rate

Cited by 38 publications

References 37 publications

Can a three-dimensional composite really provide better mechanical performance compared to two-dimensional composite under compressive loading?

Can a three-dimensional composite really provide better mechanical performance compared to two-dimensional composite under compressive loading?

Thermomechanical behavior of adhesively bonded joints under out-of-plane dynamic compression loading at high strain rate

Visco‐elasto‐plastic constitutive model of adhesives under uniaxial compression in a range of strain rates

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