Modeling Nonlinear and Time-Dependent Behaviors of Polymeric Sandwich Composites at Various Environmental Conditions

Davoodi, Bentolhoda; Gomez, Antonio; Pinto, B. Mario; Muliana, Anastasia; Saponara, Valeria La

doi:10.1007/978-3-030-31065-3_16

Cited by 2 publications

(2 citation statements)

References 20 publications

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“…Several studies have reported reductions in the mechanical properties, e.g. tensile modulus, tensile strength, shear strength, and fracture toughness, after exposure to ambient humidity [4][5][6][7][8][9]. Due to their significant effects on the mechanical properties of the composites, it is then important to understand the long-term diffusion process in the FRP materials and structures.…”

Section: Introductionmentioning

confidence: 99%

Predicting multi-axial diffusion of water in laminated composite structural components

Fan

Krauklis

Gagani

et al. 2021

Composite Structures

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This study examines the diffusion of water in fiber-reinforced polymer (FRP) laminated composites, comprising epoxy resin and unidirectional glass fibers, at different material and structural scales. Experiments on the diffusion of neat resin, FRP laminas in the axial and transverse fiber directions, FRP laminated composites with different stacking sequences, and FRP plates, rods, and pipes are conducted to obtain the diffusion processes at different length scales. Simultaneously, a diffusion model for a laminated composite is formulated to mathematically describe the multi-axial diffusion processes in FRP composites at various length scales, i.e., single lamina, laminated stacking sequence, and component. The study shows that the diffusivity constants calibrated from neat epoxy resin and unidirectional laminas are adequate to predict the diffusion responses of laminated composite systems and structural components of larger sizes. This capability is useful in predicting the long-term diffusion responses of FRP composites of complex geometries and large sizes where conducting diffusion tests on such systems is not feasible.

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Section: Introductionmentioning

confidence: 99%

Predicting multi-axial diffusion of water in laminated composite structural components

Fan

Krauklis

Gagani

et al. 2021

Composite Structures

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“…The time-dependence behavior has been reported regardless of length of the spatial or temporal aspects of the composite. [14][15][16][17][18][19][20][21][22][23][24][25] While advanced composite structures have recently relied on carbon and graphite fibers to achieve extreme strength and stiffness at a lower weight penalty, glass fibers remain a reliable competitor despite being the oldest high-performance fiber since the 1930s. [26] For example, fiberglass-based composites are notorious in the marine industry, such as in the construction of yachts, as well as in the defense industry, having been used in certain parts of fourth-generation fighter jets.…”

Section: Introductionmentioning

confidence: 99%

Creep analysis of E‐glass/vinyl‐ester laminated composites for underground vault structures

Youssef

2020

Polymer Composites

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Creep is eminent in fiber reinforced polymer matrix composite materials given the susceptibility of polymers to constant loading. The response of polymer matrix composites used in retrofitting vital infrastructure to long‐term flexural loadings is investigated to elucidate the effect of creep. The experimental approach consisted of first establishing a benchmark of the quasi‐statically tested flexural properties. A fresh set of samples were then flexural tested for an extended period. Failure was determined to be strain‐driven in both quasi‐static and long‐term testing conditions. The mechanical properties were found to be insensitive to the strain rate (in the low strain regime), while being mildly sensitive to creep loading. The flexural response also showed dependence on the historic creep loading. The creep strain was successfully fitted into Baily‐Norton power law, which allowed for forecasting the creep life based on the critical strain failure criteria. The overall results explicate the interrelation between long‐term loading and fidelity of composites‐based infrastructures.

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Modeling Nonlinear and Time-Dependent Behaviors of Polymeric Sandwich Composites at Various Environmental Conditions

Cited by 2 publications

References 20 publications

Predicting multi-axial diffusion of water in laminated composite structural components

Predicting multi-axial diffusion of water in laminated composite structural components

Creep analysis of E‐glass/vinyl‐ester laminated composites for underground vault structures

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