Local shrinkage and stress induced by thermo-oxidation in composite materials at high temperatures

Gigliotti, Marco; Olivier, L.; Vu, Dinh Quy; Grandidier, Jean-Claude; Lafarie-Frenot, M.C.

doi:10.1016/j.jmps.2010.12.001

Cited by 44 publications

(27 citation statements)

References 18 publications

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“…Also, the interaction between oxidation and decomposition, if any, was assumed insignificant, and the difference between weight loss in air and argon was completely due to oxidation. The superficial nature of oxidation and the accompanying volumetric polymer decomposition were reported in the literature [3,12,16].…”

Section: Resultsmentioning

confidence: 92%

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Anisotropic oxidation prediction using optimized weight loss behavior of bismaleimide composites

2016

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High-temperature polymer matrix composites are susceptible to thermo-oxidation, which accelerates their degradation and reduces the service life. This work presents the viability of using experimental weight loss for modeling the spatial distribution of oxidation when the oxidized polymer matrix is not discernible due to cracking. The oxidized layer thickness and weight loss were predicted at a microscale level by implementing a volumetric integral in finite element analysis and scaled to a macroscale level by respective area ratios. Weight loss was shown to have a spatial distribution following the three-zone model. The proportionality parameter was optimized by fitting the scaled finite element predictions to the experimental results using artificial neural networks and a generalized pattern search algorithm. Aging experiments have been conducted at the operating temperature range of BMIs, 176.67°C (350°F) and 200°C (392°F). Optical dark field images were acquired to monitor longitudinal and transverse oxidation. Microscale simulations were conducted using representative volume elements utilizing COMSOL Multiphysics. A novel characteristic index for describing the completely oxidized matrix was the weight loss per unit volume that equals 0.44 mg/lm 3 as shown by spatial distribution simulations. The orthotropic diffusivity resulted in a higher degree of anisotropy in the oxidized thickness compared to the weight loss %. At the representative volume element scale, the oxidized layer thickness simulations showed a higher degree of non-linearity at higher temperatures stemming from the cracking effect.

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Section: Resultsmentioning

confidence: 92%

“…Two sets of laminates, [0°] 12 and [0°] 16 , were manufactured using an out-of-autoclave (OOA) prepreg process. Laminates were laid up according to the required lamination scheme and debulked under a 28-in.…”

Section: Materials Manufacturing and Thermal Aging Experimentsmentioning

confidence: 99%

Anisotropic oxidation prediction using optimized weight loss behavior of bismaleimide composites

2016

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“…The approach employed here for building the ageing dependent constitutive law represents an enhanced version of a model presented in Minervino et al, 2014 (see also Gigliotti et al, 2011 ). It represents an alternative route to more classical approaches (see, among others, Schapery, 1966;Knauss, and Emri, 1981;Christensen, 1982;Haupt, 20 0 0;Lion, 1997;Lion, 20 0 0;Haupt et al, 20 0 0;Reese, and Govindjee, 1998 ), and viscoelasticity is entirely described by an approach by internal variables (TIV).…”

Section: Model Approachmentioning

confidence: 99%

“…The constitutive law is modeled within the framework of Prigogine's fluctuation theory and is based on the thermodynamics of irreversible processes (TIP): it represents an enhanced version of the behaviour model presented by the same authors ( Gigliotti et al, 2011;Minervino et al, 2014 ).…”

Section: Introductionmentioning

confidence: 99%

Effect of Thermo-oxidation on the local mechanical behaviour of epoxy polymer materials for high temperature applications

Gigliotti

Minervino

Lafarie-Frenot

et al. 2016

Mechanics of Materials

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“…A good agreement was found between the simulated and measured profiles. Based upon the analysis of the thermo-oxidation induced stress field it was understood that the environment has an influence on the onset of damage in composite materials at elevated temperature [41]. The thermo-oxidative degradation of polylactide (PLA) films was studied by Rasselet et al [42] between 70 and 150°C.…”

Section: Effect Of Thermal Oxidation On the Mechanical Performance Ofmentioning

confidence: 99%

Effect of Thermo-oxidation on the Mechanical Performance of Polymer Based Composites for High Temperature Applications

Ghosh

2015

Thermal Degradation of Polymer Blends, Composites and Nanocomposites

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Local shrinkage and stress induced by thermo-oxidation in composite materials at high temperatures

Cited by 44 publications

References 18 publications

Anisotropic oxidation prediction using optimized weight loss behavior of bismaleimide composites

Anisotropic oxidation prediction using optimized weight loss behavior of bismaleimide composites

Effect of Thermo-oxidation on the local mechanical behaviour of epoxy polymer materials for high temperature applications

Effect of Thermo-oxidation on the Mechanical Performance of Polymer Based Composites for High Temperature Applications

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