Numerical modelling of moisture diffusion in FRP with clustered microstructures

Jain, Deepak; Mukherjee, Abhijit; Kwatra, Naveen

doi:10.1016/j.apm.2015.09.021

Cited by 15 publications

(7 citation statements)

References 35 publications

(48 reference statements)

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“…Only the fiber volume fraction was considered in the theoretical models. In fact, the effects of the fiber arrangement and the fiber cluster on the moisture diffusion are significant .…”

Section: Introductionmentioning

confidence: 99%

Numerical modeling of moisture diffusion in an unidirectional fiber‐reinforced polymer composite

Pan

Xian

2017

Polymer Composites

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The durability of a fiber-reinforced polymer (FRP) composite is dependent on the diffusion of water or corrosive media in them. In this paper, the finite element method (FEM) is adopted to investigate the effects of neighborhood filaments in cell model process, as well as the fiber volume fraction, fiber arrangements and fiber in contact on the moisture diffusion in FRPs. The diffusivity coefficient determined by the modified predicted theoretical model is larger than the FEM results. The filaments affect the moisture diffusion process significantly within the 1.2$1.4 times of the fiber radius, while the fiber arrangement plays a slight effect relatively. In addition, the tortuosity of the diffusion path owing to the fiber contact is found to play a dominant role on the moisture diffusion. The diffusivity coefficient of the water in the fiber-resin interphase zone is much smaller than that of the matrix, due to the effect of the existence of the carbon fibers. For the current CFRP system, the diffusivity of resin matrix is 1.12 3 10 27 mm 2 /s and the diffusivity coefficient of the water in the interphase is only 25% of that of the matrix. POLYM. COMPOS., 00:000-000,

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“…Only the fiber volume fraction was considered in the theoretical models. In fact, the effects of the fiber arrangement and the fiber cluster on the moisture diffusion are significant .…”

Section: Introductionmentioning

confidence: 99%

Numerical modeling of moisture diffusion in an unidirectional fiber‐reinforced polymer composite

Pan

Xian

2017

Polymer Composites

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“…The magnitudes at the interface are in close approximation to the ones given by CCA algorithm (Eqs. 14,15,16). Further, the stresses developed on the matrix side increase in magnitude toward the interface and maximum at the interface due to interfacial cohesion.…”

Section: X=09lmentioning

confidence: 99%

“…From the microscopic viewpoint, fiber architecture is an important aspect that can influence the moisture diffusion. Therefore, there is a need to accurately model the ingress of moisture into composites [14][15][16][17]. As the fiber diameter is fairly small in comparison with its length, most of the researches have been conducted using two-dimensional models.…”

Section: Introductionmentioning

confidence: 99%

A framework for three-dimensional finite element analysis of unidirectional and cross-ply composite layups through localized microstructures under hygromechanical conditions

Jain

Vats

Bera

et al. 2020

J Braz. Soc. Mech. Sci. Eng.

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Fiber-reinforced polymers (FRPs) are sensitive to moisture diffusion. Deterioration caused by moisture can limit their service lives considerably. In this work, a three-dimensional finite element modeling and analysis framework is presented to investigate the moisture diffusion kinetics inside fiber-reinforced inside polymer matrix composites by considering different angle and cross-ply orientations. A small localized representative volume element considering a few fibers in the neighborhood of three-layer stacks has been analyzed. The emphasis is on the effect of different fiber orientations over moisture saturation time and diffusion-induced stresses. Stresses induced due to moisture diffusion in FRPs are evaluated on the free fiber ends. The numerical results from finite element approximations are compared with theories of composite micromechanics such as rule of mixtures, Halpin-Tsai model and concentric cylinder assemblage framework. It is observed that the orientation of fiber layers can greatly influence the moisture ingress inside the matrix and resulting stresses. At intermediate time durations of moisture progression, the cross-ply orientation had ~ 25% lower weight gain in comparison with the unidirectional ply orientations. The overall von Mises stresses at the fiber matrix interface were also lower in cross-ply orientations by ~ 40% in comparison with the other orientations with similar fiber volume fraction. The three-layered cross-ply, 90/90/90 orientation took almost 50% more time to fully saturate with moisture in comparison with the unidirectional, 0/0/0 orientation. The interpretations from the smaller local microstructural models presented in this work can be extended to study and design the structure scale composite layups for the improved moisture durability.

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“…This geometric dimension is consistent with the size of square RVE in the moisture diffusion simulation. 22…”

Section: Experimental Details Theoretical and Numerical Modelsmentioning

confidence: 99%

“…Jain et al. 22–27 numerically studied the effects of fiber topology and fiber clustering levels on the water diffusion coefficient of polymer matrix composite. However, few studies have been conducted to investigate the water uptake behavior in the continuous carbon fiber reinforced polyamide 6 thermoplastic composites.…”

Section: Introductionmentioning

confidence: 99%

Water diffusion in carbon fiber reinforced polyamide 6 composites: Experimental, theoretical, and numerical approaches

Lei

Zhang

2019

Journal of Reinforced Plastics and Composites

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Diffusion of moisture through composites is one of the main environmental causes of their deterioration and loss of service life. This paper deals with water diffusion in the unidirectional continuous carbon fiber reinforced polyamide 6 composites by experimental measurement, theoretical analysis, and numerical simulation. Immersion experiment is respectively conducted in distilled water at 25°C, 70°C, and 95°C for the pure polyamide 6 resin and the carbon fiber/polyamide 6 composite. Then, the theoretical Fickian and Langmuir models are employed to fit the gravimetric data of the specimens. Subsequently, water diffusion in the composite is also simulated using finite element method. Moreover, to capture the real distribution of fibers in the matrix, the random algorithm is developed to generate the computational composite models with randomly dispersed fibers. Finally, the comparison between the experimental, theoretical, and numerical results is made to assess the applicability of theoretical models and the influences of fiber distribution and interphase on the effective water diffusion coefficient of composite.

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Numerical modelling of moisture diffusion in FRP with clustered microstructures

Cited by 15 publications

References 35 publications

Numerical modeling of moisture diffusion in an unidirectional fiber‐reinforced polymer composite

Numerical modeling of moisture diffusion in an unidirectional fiber‐reinforced polymer composite

A framework for three-dimensional finite element analysis of unidirectional and cross-ply composite layups through localized microstructures under hygromechanical conditions

Water diffusion in carbon fiber reinforced polyamide 6 composites: Experimental, theoretical, and numerical approaches

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