Elasto-plastic behavior and failure of thick GLARE laminates under bending loading

Solyaev, Yury; Lurie, S. A.; Prokudin, Oleg A.; Антипов, В.В.; Rabinskiy, Lev N.; Serebrennikova, N.Yu.; Dobryanskiy, V. N.

doi:10.1016/j.compositesb.2020.108302

Cited by 14 publications

(6 citation statements)

References 31 publications

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“…The plasticity of glass fiber reinforced composite layer was assumed to be fully elastic under tensile loading condition up to the failure. [23] The results of FMLs with nanoclay filler were compared to the results of the FML with MWCNT [24] and LDH [25] filler in previous studies conducted by the authors. While comparing the stress-strain curves, it was understood that the FML with 5 wt% of nanoclay filler in 0 orientation to the rolling direction exhibited maximum resistance to the tensile load as it showed maximum UTS, but the value was slightly greater to the laminate with 3 wt% nanoclay.…”

Section: Tensile Properties Of Fmlsmentioning

confidence: 99%

Evaluation of mechanical properties of novel GLARE laminates filled with nanoclay

et al. 2021

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In this research work, we have investigated the effect of nanoclay fillers in the epoxy adhesive on improving the interfacial adhesion and the mechanical properties of glass-reinforced aluminum laminates. The laminates were prepared with a varying weight percentage of nanoclay fillers (i.e., 3, 4, and 5 wt%) in the epoxy resin using the hand lay-up method. During the tensile test, the laminate's anisotropic nature was investigated using the samples cut in different orientations to the rolling direction (i.e., 0, 45, and 90 ). The flexural, lap shear, and impact tests were conducted as per ASTM standards. After each test, the failure mechanisms of laminates were studied using the scanning electron microscope. The results showed that 3 wt% of nanoclay added in the epoxy enhanced the laminates' overall mechanical properties than other composites. The fiber metal laminates (FML) containing the nano clay more than 3 wt% showed deterioration in the mechanical property due to the improper distribution of nanoclay in the epoxy matrix. The FML's mechanical properties with nano clay filler were compared with other fillers' performance in the previous studies. It was found that the mechanical properties of FML with nano clay filler were more significant than others.

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Section: Tensile Properties Of Fmlsmentioning

confidence: 99%

Evaluation of mechanical properties of novel GLARE laminates filled with nanoclay

et al. 2021

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“…Deflection function of the beam can provide useful information on the state of the structure. Detailed analytical and numerical evaluation of the post-elastic response of beams is not trivial [1][2][3]. In case of bridges, influence lines can be used to detect damage [4].…”

Section: Introductionmentioning

confidence: 99%

A Diagnostic Method Based on Deflection Analysis for Monitoring Post-elastic Response of Beams

Sciegaj

2023

Int J Civ Eng

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A non-destructive diagnostic method based on deflection analysis for monitoring the post-elastic response of beams was developed, and a diagnostic indicator was proposed. The indicator was defined as the second moment of the normalised curvature function about the mid-span, where the curvature was computed from the normalised deflection function. Elastic reference values of the indicator were computed for simply supported beams under uniformly distributed load, three-point, and four-point bending. Development of the indicator under progressive loading was examined with the help of finite element analyses. The indicator value monotonically decreased with increasing deformation provided that maximum bending moment was located between 0.41L and 0.59L, where L is the span of the beam. In this interval, the value of the indicator was unique and enabled the direct monitoring of the post-elastic stress level in the cross-section. The method was validated with the help of available experiments on simply supported beams. For beams working in the elastic range, a mean error of $${2.1}{\%}$$ 2.1 % was obtained between the measured and theoretical indicator values. For quasi-brittle material in the post-elastic stage, the decreasing value of the indicator signified the development of damage in accordance with experimental results.

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“…It was found that flexural stiffness increased significantly with raising the laminate thickness. A significant number of experimental [8][9][10][11][12][13] and computational-experimental studies [14][15][16][17][18][19][20] was devoted to the study of the possibilities of using of three-point bending test results for determining the elastic constants of composites with different span-to-thickness ratio. In [12][13][14][15][16][17], recommendations are given on the choice of L h / ratio, at which it is possible to neglect an influence of shear for correctly determining the flexural modulus.…”

Section: Introductionmentioning

confidence: 99%

Features of Three-Point Bending Tests for Determining Out-of-Plane Shear Modulus of Layered Composites

2022

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Three-point bending tests are widely used to determine the elastic and shear moduli of polymer matrix composites due to their simplicity. Nevertheless, the accuracy of the elastic constants definition has a significant sensitivity to a degree of anisotropy of the laminates. This work is aimed to analyze experimentally and numerically the capabilities of the bending tests for determining the out-of-plane shear modulus of composites with different degrees of anisotropy. The methodology considering an influence of shear and local deformation effects was used. Finite element modeling was performed for an independent assessment of the accuracy of the methodology. It was found out that the methodology considered allowed one to determine the out-of-plane shear modulus with reasonable accuracy for both unidirectional and woven CFRPs. At the same time, the accuracy of the out-of-plane shear modulus determining is significantly reduced for materials with a low degree of anisotropy, such as woven GFRP.

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Elasto-plastic behavior and failure of thick GLARE laminates under bending loading

Cited by 14 publications

References 31 publications

Evaluation of mechanical properties of novel GLARE laminates filled with nanoclay

Evaluation of mechanical properties of novel GLARE laminates filled with nanoclay

A Diagnostic Method Based on Deflection Analysis for Monitoring Post-elastic Response of Beams

Features of Three-Point Bending Tests for Determining Out-of-Plane Shear Modulus of Layered Composites

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