The Effect of Hygrothermal Aging on the Glass and Carbon Reinforced Epoxy Composites for different Stacking Sequences

Doğan, Akar; Arman, Yusuf

doi:10.5755/j01.mech.24.1.18508

Cited by 11 publications

(5 citation statements)

References 28 publications

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“…Apart from the studies mentioned above, the mechanical properties of the carbon fiber/fabric [18][19][20][21] or particle reinforced composite samples [22][23][24][25][26][27] under environmental conditioning were also investigated.…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal aging effect on the tensile properties of hybrid aramid/glass/epoxy composites: Comparison of distilled water and seawater

Oğuz

Erkliğ

2022

Journal of Composite Materials

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This paper evaluated the effect of water adsorption on the tensile characteristics of hybrid aramid/glass/epoxy composites. The composite samples ([G6]S, [A6]S, [G3A3]S, [A3G3]S immersed in hydrothermal aging conditions (distilled water at 25°C, distilled water at 70°C, seawater at 25°C, seawater at 70°C) for 1000 h. The kinetic diffusion parameters of hybrid and plain specimens were evaluated experimentally and theoretically. Further, the effects of the stacking sequence of fabrics, seawater/distilled water aging, and temperature on the tensile behavior of dry, wet, and re-dried specimens were systematically discussed. At the end of the test, SEM images were obtained from the surfaces of the broken samples. Water gain plots for various conditions displayed that the samples absorbed more water when the aramid fabrics were on the outer surface of the hybrid composites. The hydrothermal aging significantly decreased the tensile strength of hybrid aramid/glass/epoxy and plain glass/epoxy composites. The tensile strength decrease rate of samples immersed in distilled water was higher than in seawater. Besides, the re-drying process induced more tensile strength degradation for both water types. SEM results showed that delaminations increased with aging and increasing temperature.

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Section: Introductionmentioning

confidence: 99%

Hydrothermal aging effect on the tensile properties of hybrid aramid/glass/epoxy composites: Comparison of distilled water and seawater

Oğuz

Erkliğ

2022

Journal of Composite Materials

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“…The literature has proved several times that hygrothermal ageing is governed by many parameters. These latter include, firstly: material parameters such as prepolymer type [ 22 , 23 , 24 , 25 ], hardener type [ 22 , 23 , 26 ], reinforcement type [ 13 , 27 , 28 , 29 ] or thickness [ 30 , 31 ]; secondly: conditioning parameters such as temperature [ 4 , 6 , 32 ] and relative humidity [ 22 , 33 , 34 ]; and thirdly: the resulting diffusion parameters such as saturation water mass uptake, saturation time and diffusivity [ 35 ]. Some of these parameters are correlated, meaning that they evolve together, while others are independent.…”

Section: Introductionmentioning

confidence: 99%

“…They include information on material type, ageing conditioning and parameters describing the diffusion curve. Data were extracted and calculated from 90 publications on hygrothermal ageing of epoxy and epoxy-based composites: [ 4 , 5 , 6 , 7 , 10 , 13 , 15 , 16 , 18 , 19 , 22 , 24 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 ,…”

Section: Introductionmentioning

confidence: 99%

“…They include information on material type, ageing conditioning and parameters describing the diffusion curve. Data were extracted and calculated from 90 publications on hygrothermal ageing of epoxy and epoxy-based composites: [4][5][6][7]10,13,15,16,18,19,22,24,[26][27][28][29][30][31][32][33][34]. This study, which includes 448 individuals, focuses on reversible gravimetric moisture uptake curves exhibiting Fick or Fick-derived two-step diffusion behaviour; water uptake is a function of the root of time.…”

Section: Introductionmentioning

confidence: 99%

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Parameters Influencing Moisture Diffusion in Epoxy-Based Materials during Hygrothermal Ageing—A Review by Statistical Analysis

et al. 2022

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The hygrothermal ageing of epoxy resins and epoxy matrix composite materials has been studied many times in the literature. Models have been developed to represent the diffusion behaviour of the materials. For reversible diffusions, Fick, Dual–Fick and Carter and Kibler models are widely used. Many parameters, correlated or not, have been identified. The objectives of this review by statistical analysis are to confirm or infirm these correlations, to highlight other correlations if they exist, and to establish which are the most important to study. This study focuses on the parameters of the Fick, Dual–Fick and Carter and Kibler models. For this purpose, statistical analyses are performed on data extracted and calculated from individuals described in the literature. Box plot and PCA analyses were chosen. Differences are then noticeable according to the different qualitative parameters chosen in the study. Moreover, correlations, already observed in the literature for quantitative variables, are confirmed. On the other hand, differences appear which may suggest that the models used are inappropriate for certain materials.

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“…Using the finite element method, it was concluded that the stress components occurring in the layers of the material are lower than those on the lower and upper surfaces, and there is an increase in the plastic stress components depending on the number of iterations [7].The behavior of composite materials against high temperatures is different from each other. In different studies, the mechanical properties and thermal behavior of different composite materials were investigated [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Analytical and Numerical Investigation of Elastic Stresses in Thermoplastic Matrix Composite Discs Under Temperature Effect

Kayiran¹

2021

International Journal of 3D Printing Technologies and Digital Industry

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In this study, elastic stress analysis was performed on thermoplastic composite discs. The modulus of elasticity of thermoplastic composite discs is also different from each other. Our goal is to study elastic stretching. The field of application of primitive stresses caused by uneven temperature distribution in engineering is quite large. Under the parabolic temperature distribution of the disks, radial stresses formed on the inner and outer parts of the disks were calculated by assuming that the modulus of elasticity does not change with temperature at temperatures of 30 °C, 60 °C, 90 °C, 120 °C on the inner and outer surfaces of the disk. During the study, analytical and numerical analysis was performed using a computer program and mathematically modeled ANSYS programs.Both methods give similar results. In other words, the differences analytical and numerical results can be ignored. At the end of this study, it was determined that the radial and tangential stress values were higher at high temperatures than at low temperatures. It has been established that tangential stresses are much larger than radial stresses. The purpose of this article is to study the behavior of the thermal load on two different thermoplastic disks.

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The Effect of Hygrothermal Aging on the Glass and Carbon Reinforced Epoxy Composites for different Stacking Sequences

Cited by 11 publications

References 28 publications

Hydrothermal aging effect on the tensile properties of hybrid aramid/glass/epoxy composites: Comparison of distilled water and seawater

Hydrothermal aging effect on the tensile properties of hybrid aramid/glass/epoxy composites: Comparison of distilled water and seawater

Parameters Influencing Moisture Diffusion in Epoxy-Based Materials during Hygrothermal Ageing—A Review by Statistical Analysis

Analytical and Numerical Investigation of Elastic Stresses in Thermoplastic Matrix Composite Discs Under Temperature Effect

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