The coupled effect of fiber volume fraction and void fraction on hydraulic fluid absorption of quartz/BMI laminates

Hurdelbrink, Keith R.; Anderson, Jacob P.; Siddique, Zahed; Altan, M. Cengiz

doi:10.1063/1.4942325

Cited by 1 publication

(6 citation statements)

References 14 publications

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“…1D HDM has been the most used approach for describing the non-Fickian moisture absorption in polymer composites. [19][20][21][22][23] As per this model, the total moisture concentration is expressed as the sum of unbound (mobile, free to diffuse) moisture concentration n(x, t) and bound (immobile, not free to diffuse) moisture concentration N(x, t). The 1D moisture absorption is then defined by Equations ( 3) and (4) given below.…”

Section: Methodsmentioning

confidence: 99%

“…Furthermore, a number of researchers suggested a variety of analytical models based on Fickian and non-Fickian moisture absorption to characterize and predict the moisture absorption behavior in polymer composites. [16][17][18][19][20][21][22][23] In polymer composites, Fickian diffusion has been commonly observed during the early stages of moisture absorption. However, polymer composites have been found to frequently exhibit non-Fickian diffusion in the long-term.…”

Section: Introductionmentioning

confidence: 99%

“…1D HDM has been used very well to reproduce the moisture absorption behavior of several composites including quartz/BMI composites, glass/epoxy composites, various epoxy nanocomposites, and so forth. [20][21][22][23] Guloglu et al [21][22][23] have also worked on correlating the absorption parameters γ and β with the volume fraction of the constituents in the composites. The authors observed that as the volume fraction of the reinforcements increased, the effective bound moisture content in the composite increased.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, a number of researchers suggested a variety of analytical models based on Fickian and non‐Fickian moisture absorption to characterize and predict the moisture absorption behavior in polymer composites. [ 16–23 ]…”

Section: Introductionmentioning

confidence: 99%

“…Among the several models used for describing the non‐Fickian behavior, Langmuir‐type one‐dimensional hindered diffusion model (1D HDM) was found to be very effective and better. [ 18–23 ] This model requires the determination of following absorption parameters:

M_{\infty}

, the maximum moisture content at saturation, 𝛾 , the probability that an unbound water molecule becomes bound, 𝛽 , the probability that a bound water molecule becomes unbound, and

D_{Z}

, the 1D HDM characteristic diffusion coefficient of unbound water molecules. 1D HDM has been used very well to reproduce the moisture absorption behavior of several composites including quartz/BMI composites, glass/epoxy composites, various epoxy nanocomposites, and so forth.…”

Section: Introductionmentioning

confidence: 99%

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Investigations on interfacial moisture storage and its relation to the mechanical behavior in polymer composites

Kannan

Swaminathan

2022

Polymer Composites

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Moisture absorption in composites significantly influence the fiber/matrix interface regions and mechanical properties. Hence, it is very important to quantify the moisture storage in interfaces and correlate it to the mechanical behavior. The novelty of this article is that, for the first time, it explores the correlation of moisture absorption parameters with the mechanical behavior of composites. The paper studies four different types of moisture‐soaked composites—glass fiber/epoxy, carbon fiber/epoxy, ZnO nanowire incorporated glass fiber/epoxy, and ZnO nanowire incorporated carbon fiber/epoxy. One‐dimensional hindered diffusion model (1D HDM) was used for the extraction of moisture absorption parameters. The hindrance coefficient (ratio of bound to unbound moisture) of composites was found to increase proportionately with the increase in the volume of interfacial regions. Only in carbon fiber/epoxy composite, it did not increase proportionately due to the relatively larger degradation of interface. This was correlated well with mechanical test responses wherein carbon fiber/epoxy exhibited anomalous failure modes due to relatively larger degradation of interface. Numerical simulations were also carried out to describe the moisture absorption in composites. Numerical simulations of moisture absorption in composites using time‐varying boundary conditions matched very well with experimental as well as 1D HDM results.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

M_{\infty}

, the maximum moisture content at saturation, 𝛾 , the probability that an unbound water molecule becomes bound, 𝛽 , the probability that a bound water molecule becomes unbound, and