Multi-factorial models of a carbon fibre/epoxy composite subjected to accelerated environmental ageing

Guzmán, Enrique; Botsis, J.; Gmür, Thomas

doi:10.1016/j.compstruct.2013.12.028

Cited by 19 publications

(12 citation statements)

References 13 publications

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“…Fiber-reinforced polymer (FRP) composite materials have recently attracted significant interest in many fields, such as civil engineering and aerospace, owing to their low density, spectacular mechanical strength [1], low weight, anticipated long service-life, and resistance to corrosion [2][3][4]. FRPs are most widely used in civil infrastructure applications, such as reclamation via external bonding, in outdoor environments with concrete, for renewing various types of concrete, and in steel structures [5,6].…”

Section: Introductionmentioning

confidence: 99%

Durability of an Epoxy Resin and Its Carbon Fiber- Reinforced Polymer Composite upon Immersion in Water, Acidic, and Alkaline Solutions

et al. 2020

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The usage of polymer composites in various engineering fields has increased. However, the long-term service performance of such materials under aggressive conditions is still poorly understood, which limits the development of safe and economically effective designs. In this study, the aging of an epoxy resin and its carbon fiber-reinforced polymer (CFRP) composites upon immersion in water, acidic, and alkaline solutions was evaluated at different temperatures. The service life of the CFRP composites under various conditions could be predicted by the Arrhenius theory. The thermal and mechanical analysis results indicated that the CFRP composites were more vulnerable to HCl owing to the higher moisture absorption and diffusion of HCl into their cracks. The scanning electron microscopy results showed that the polymer matrix was damaged and degraded. Therefore, to allow long-term application, CFRP composites must be protected from acidic environments.

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Section: Introductionmentioning

confidence: 99%

Durability of an Epoxy Resin and Its Carbon Fiber- Reinforced Polymer Composite upon Immersion in Water, Acidic, and Alkaline Solutions

et al. 2020

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“…; its resulting mechanical degradation is a complex multi-scale and multi-factor process. It was previously reported by others [27,[38][39] that there is a correlation between the deterioration of material properties and the mass variations in CFRP. Here, as a simplification, the compressive modulus…”

Section: Predictive Model For Ageingmentioning

confidence: 83%

“…In [38], a linear correlation between the moisture concentration and elastic properties of the composite material was verified to be useful to predict the mechanical properties aging. According to our experimental data, the linear correlation is also applicable and useful.…”

Section: Prediction and Discussmentioning

confidence: 94%

Moisture absorption characteristics and mechanical degradation of composite lattice truss core sandwich panel in a hygrothermal environment

Mei

Tan

Liu

et al. 2019

Composites Part A: Applied Science and Manufacturing

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This paper investigates the impact of hygrothermal aging upon the compressive mechanical properties of carbon fiber reinforced plastics (CFRP) composite sandwich panels with a tetrahedral truss core. Gravimetric absorption data, through accelerated moisture absorption tests, were presented for three different temperatures of 30℃, 55℃ and 80℃. Predictions by Fickian and Langmuir-type diffusion models were compared to evaluate which one best describe the moisture diffusion process in the sandwich panels. A subroutine implementing the Langmuir-type diffusion model in ABAQUS was developed to simulate the variations of moisture concentration. The compressive properties of composite strut and tetrahedral truss cores sandwich panel after hygrothermal aging at different temperatures were tested, respectively. The experimental results indicated that the degradation of compressive properties of composite sandwich panel was induced by the combined effect of temperature and moisture absorption. Analytical expressions were developed to predict the compressive strength and stiffness of the sandwich panel following hygrothermal aging. A good agreement was found between the predictions by finite element, analytical model and experimental results.

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“…Efforts on explaining and modeling such TOA effects on the degradation phenomena have also been the topic of several workers. 18–20 However, the predict models used for fiber-reinforced polymer composites in the articles 18,19 quote directly from the degrading models of homogeneous materials. Obviously, these references are lack of theoretical foundation since the TOA processes of fiber-reinforced polymer composites are more complex than that of their matrix materials.…”

Section: Introductionmentioning

confidence: 99%

“…On the contrary, data-driven (analytical or computational) approaches have proven to work quite well for CFRPs in predicting their strength response under different aging conditions. 20 However, the method in the article 20 is too complex to be used since the model needs to get too many necessary parameters.…”

Section: Introductionmentioning

confidence: 99%

Random process model of mechanical property degradation in carbon fiber-reinforced plastics under thermo-oxidative aging

Fan

et al. 2016

Journal of Composite Materials

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The mechanical properties of carbon fiber-reinforced plastics used in aerospace are vulnerable to degradation under thermo-oxidative aging conditions. However, it is hard to establish a mechanical property prediction model for carbon fiber-reinforced plastics from thermo-oxidative aging mechanism point of view since the thermo-oxidative aging degradation processes are very complex. A mathematical model was proposed based on the theory of stochastic processes for predicting mechanical property degradation of carbon fiber-reinforced plastics under thermo-oxidative aging conditions in the present work. However, the predicted values calculated by the “random process model” were not in good agreement with experimental data. And then a “modified random process model” (namely a wider random process model) was established through Box–Cox transformation for random process model. The verification of the evaluation model showed that the modified random process model can nicely describe the mechanical performance degradation of carbon fiber-reinforced plastics with the increasing of aging time under certain aging temperatures. As the modified random process model was established without limiting the reinforced structure of carbon fiber-reinforced plastics, the described method provides an opportunity to rapidly predict the mechanical properties and the lifetime of any carbon fiber-reinforced plastics by testing the mechanical properties of carbon fiber-reinforced plastics before and after aging for a short period of time.

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Multi-factorial models of a carbon fibre/epoxy composite subjected to accelerated environmental ageing

Cited by 19 publications

References 13 publications

Durability of an Epoxy Resin and Its Carbon Fiber- Reinforced Polymer Composite upon Immersion in Water, Acidic, and Alkaline Solutions

Durability of an Epoxy Resin and Its Carbon Fiber- Reinforced Polymer Composite upon Immersion in Water, Acidic, and Alkaline Solutions

Moisture absorption characteristics and mechanical degradation of composite lattice truss core sandwich panel in a hygrothermal environment

Random process model of mechanical property degradation in carbon fiber-reinforced plastics under thermo-oxidative aging

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