Surface and interface properties of carbon fiber composites under cyclical aging

Lv, Xinying; Wang, Rongguo; Liu, Wenbo; Jiang, Long

doi:10.1016/j.apsusc.2011.06.147

Cited by 40 publications

(20 citation statements)

References 13 publications

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“…This effect becomes more noticeable as the ageing time and temperature increases and causes mainly a reduction of the interlaminar resistance. These results were in accordance with previous works [54,55,56].…”

Section: Resultssupporting

confidence: 94%

Effect of Thermal Ageing on the Impact Damage Resistance and Tolerance of Carbon-Fibre-Reinforced Epoxy Laminates

et al. 2019

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Composite structures are particularly vulnerable to impact, which drastically reduces their residual strength, in particular, at high temperatures. The glass-transition temperature (Tg) of a polymer is a critical factor that can modify the mechanical properties of the material, affecting its density, hardness and rigidity. In this work, the influence of thermal ageing on the low-velocity impact resistance and tolerance of composites is investigated by means of compression after impact (CAI) tests. Carbon-fibre-reinforced polymer (CFRP) laminates with a Tg of 195 °C were manufactured and subjected to thermal ageing treatments at 190 and 210 °C for 10 and 20 days. Drop-weight impact tests were carried out to determine the impact response of the different composite laminates. Compression after impact tests were performed in a non-standard CAI device in order to obtain the compression residual strength. Ultrasonic C-scanning of impacted samples were examined to assess the failure mechanisms of the different configurations as a function of temperature. It was observed that damage tolerance decreases as temperature increases. Nevertheless, a post-curing process was found at temperatures below the Tg that enhances the adhesion between matrix and fibres and improves the impact resistance. Finally, the results obtained demonstrate that temperature can cause significant changes to the impact behaviour of composites and must be taken to account when designing for structural applications.

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Section: Resultssupporting

confidence: 94%

Effect of Thermal Ageing on the Impact Damage Resistance and Tolerance of Carbon-Fibre-Reinforced Epoxy Laminates

et al. 2019

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“…49,50 This oxidation process accompanied the disappear of the band at 1234 cm −1 , representing the characteristic band of C–O in secondary alcohol group, probably from the reaction of oxygen with the resin matrix in a hot oxidative environment. 51 –53…”

Section: Resultsmentioning

confidence: 99%

Effects of thermal–oxidative aging on the mechanical properties of open-hole T800 carbon fiber/high-temperature epoxy composites

Jia

et al. 2019

High Performance Polymers

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T800 carbon fiber/high-temperature epoxy resin composites with holes were subjected to thermal–oxidative aging, and the effects of different aging temperatures and times on the composite properties were investigated. The mass loss, surface topography, open-hole tensile performance, fracture morphologies, dynamic mechanical properties, and infrared spectra were analyzed. The results showed that chemical aging did not occur with thermal–oxidative aging at 70°C and 130°C. However, chemical aging occurred at 190°C. At 70°C, 130°C, and 190°C, all samples showed a slight increase followed by a slight decrease and stabilization in the open-hole tensile strength. The open-hole tensile strength was maximized after 240 h aging at different temperatures; the open-hole tensile strength after 1920 h aging exceeded that of the unaged samples. All composites experienced through-hole failure. With aging, the glass transition temperature ( T g) was gradually increased and then decreased. After 960 h aging at different temperatures, T g was maximized.

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“…The effects of moisture on the interfacial properties of FRPs have been investigated through various tests of laminates, such as transverse tensile test [15], flexural test [16] and interlaminar shear test [17,18]. However, these macro-level characterizations are influenced to a large extent by the moisture resistance of matrix materials and the geometrical feature of composites, which may disturb the study on the properties of fiber/matrix interface [19,20].…”

Section: Introductionmentioning

confidence: 98%

Long-term moisture effects on the interfacial shear strength between surface treated carbon fiber and epoxy matrix

Jiang

Yang

2015

Composites Part A: Applied Science and Manufacturing

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Surface and interface properties of carbon fiber composites under cyclical aging

Cited by 40 publications

References 13 publications

Effect of Thermal Ageing on the Impact Damage Resistance and Tolerance of Carbon-Fibre-Reinforced Epoxy Laminates

Effect of Thermal Ageing on the Impact Damage Resistance and Tolerance of Carbon-Fibre-Reinforced Epoxy Laminates

Effects of thermal–oxidative aging on the mechanical properties of open-hole T800 carbon fiber/high-temperature epoxy composites

Long-term moisture effects on the interfacial shear strength between surface treated carbon fiber and epoxy matrix

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