Influence of hygrothermal environment on thermal and mechanical properties of carbon fiber/fiberglass hybrid composites

Tsai, Yun-I.; Bosze, E.J.; Barjasteh, Ehsan; Nutt, Steven

doi:10.1016/j.compscitech.2008.11.012

Cited by 168 publications

(109 citation statements)

References 19 publications

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“…Elevated aging temperatures are chosen to increase diffusion rates without degrading the temperature-sensitive matrix material. Exceedingly high temperatures can alter the material physically or 5 chemically as evidenced by non-Fickian diffusion and/or changes in glass transition temperature (Tsai et al, 2009;Grammatikos et al, 2016).…”

Section: Hygrothermal Aging Of Fiber Reinforced Plastics 30mentioning

confidence: 99%

“…At ambient design temperatures moisture diffusion occurs over time periods impractical for study in the laboratory setting. The rate-temperature relationship of the Arrhenius law applies for moisture diffusion in FRP's (Tsai et al, 2009), and allows test specimens to be aged at elevated temperatures to increase diffusion rates. Elevated aging temperatures are chosen to increase diffusion rates without degrading the temperature-sensitive matrix material.…”

Section: Hygrothermal Aging Of Fiber Reinforced Plastics 30mentioning

confidence: 99%

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Effects of moisture absorption on damage progression and strength of unidirectional and cross-ply fiberglass-epoxy composites

Nunemaker¹,

Voth²,

Miller³

et al. 2018

Preprint

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Abstract. Fiber-Reinforced-Polymer composites (FRP's) possess superior mechanical properties and formability, making them a desirable material for construction of large optimized mechanical structures, such as aircraft, wind turbines, and marine hydro kinetic (MHK) devices. However, exposure to harsh marine environments can result in moisture absorption into the microstructure of the FRP's comprising these structures and often degrading mechanical properties. Specifically, 10 laminate static and fatigue strengths are often significantly reduced, which must be considered in design of FRP structures in marine environments. A study of fiber-glass epoxy unidirectional and cross-ply laminates was conducted to investigate hygrothermal effects on the mechanical behavior of a common material system used in wind applications. Several laminates were aged in 50°C distilled water until maximum saturation was reached. Unconditioned control and the saturated samples were tested in quasi-static tension with the accompaniment of Acoustic Emission (AE) monitoring. Cross-ply laminates 15 experienced 54% reduction in strengths from due to moisture absorption, while unidirectional laminates strengths were reduced by 40%. Stress-strain curves and AE activity of the samples were analyzed to identify changes in damage progression due to aging.

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Section: Hygrothermal Aging Of Fiber Reinforced Plastics 30mentioning

confidence: 99%

Section: Hygrothermal Aging Of Fiber Reinforced Plastics 30mentioning

confidence: 99%

Effects of moisture absorption on damage progression and strength of unidirectional and cross-ply fiberglass-epoxy composites

Nunemaker¹,

Voth²,

Miller³

et al. 2018

Preprint

View full text Add to dashboard Cite

show abstract

“…The material degradation includes chemical changes of the matrix materials and debonding at the fiber/matrix interface. Long-term exposure at high temperatures is also a concern for CFRP, as higher temperatures accelerate diffusion rates of moisture and generally accelerate aging [7,8]. Costa et al [3,9] indicated that voids in polymer matrix composites may result in significant reductions in matrix dominated mechanical properties such as interlaminar shear, compressive, and flexural strengths.…”

Section: Introductionmentioning

confidence: 99%

Qualitative separation of the effect of voids on the static mechanical properties of hygrothermally conditioned carbon/epoxy composites

Zhang¹,

Li²,

Zhang³

et al. 2011

Express Polym. Lett.

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Abstract. The paper investigates the effect of voids and hygrothermal conditions on bending, compressive, and interlaminar shear strength (ILSS) of T300/914 composite laminates. By adopting different autoclave pressures during a cure cycle, specimens with three different void contents ranging from 0.33% to 1.50% were obtained. Experimental results reveal that compressive, bending strength, and ILSS decrease with increasing void contents and immersion time. The most significant decrease in strength of aged specimens is in the ILSS and compressive strength, followed by the bending strength. The effect of voids on the absorption/desorption behavior is also discussed. For a similar porosity, the compressive strength and ILSS of dried specimens are higher than that of the aged specimens, while they are lower than that of the unaged specimens. The bending strength of the dried specimens is higher than that of the unaged specimens. The experimental results are explained by the supportive micrographs that illustrate different types of voids and their morphology before and after moisture absorption/desorption.

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“…Carbon fibres naturally exhibit different CTE responses along their longitudinal and transversal directions and are usually selected as reinforcements for multi-layered polymer composite structures to tailor their overall CTE. Supplementary, several studies were reported in literature on the multi-layered polymer composites' material properties changes if pre-conditioned under extreme environments [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Effects of fibre orientation and content on the mechanical, dynamic mechanical and thermal expansion properties of multi-layered glass/carbon fibre-reinforced polymer composites

Motoc

Bou

Balart

2014

Journal of Composite Materials

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Influence of hygrothermal environment on thermal and mechanical properties of carbon fiber/fiberglass hybrid composites

Cited by 168 publications

References 19 publications

Effects of moisture absorption on damage progression and strength of unidirectional and cross-ply fiberglass-epoxy composites

Effects of moisture absorption on damage progression and strength of unidirectional and cross-ply fiberglass-epoxy composites

Qualitative separation of the effect of voids on the static mechanical properties of hygrothermally conditioned carbon/epoxy composites

Effects of fibre orientation and content on the mechanical, dynamic mechanical and thermal expansion properties of multi-layered glass/carbon fibre-reinforced polymer composites

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