Effect of a deicing fluid on the durability of carbon/epoxy composites

Sugita, Yoshino; Winkelmann, Charles; Saponara, Valeria La; Cheng, Lijuan

doi:10.1007/s11029-011-9210-1

Cited by 2 publications

(2 citation statements)

References 9 publications

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“…Jet fuel, hydraulic fluids and de-icing fluids cause irreversible chemical modifications to metal parts 13,14 or FRP composite parts. [15][16][17] Pollutants in industrial areas, sulphur dioxide, oxides of nitrogen and carbon, and ozone, also have an accelerating effect on the degradation of composite materials. 18 Funke and Haagen observe that SO 2 can penetrate polymer coatings and attack the part.…”

Section: Introductionmentioning

confidence: 99%

Use of Karl Fischer titration for the localized measurement of water content in FRP composite aircraft parts removed from service

Gillet

Splawski²,

Aguirre

et al. 2023

Journal of Composite Materials

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Moisture content measurements are performed on scrapped Outlet Guide Vanes (OGV) that have operated in different climates. These measurements are made by three Karl Fischer titration methods. The results are separated into two parts. On one side, a comparison of these different techniques highlights their advantages and disadvantages. The methods for studying the samples and the duration of the tests differ. The standard method is not sufficient to extract all the water from the samples. The chemical extraction and grinding methods provide higher water content. On the other side, a mapping of the water content through three scrapped OGV blades is performed with the Karl Fischer titration. Differences are observed according to the service area climate. Concentration gradients are also visible within the part, with more water at the leading edges and less water in the foam. Parts that have flown in hot and humid regions have the lowest water contents by standard Karl Fischer titration. These measurements are compared with the analysis of the damage they have been subjected to. They allow to highlight the composite material degradation, manifested by resin erosion, which is more significant for parts that have operated in wet and humid areas. This erosion involves a lower resin percentage and could explain the lower water contents measured.

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Section: Introductionmentioning

confidence: 99%

Use of Karl Fischer titration for the localized measurement of water content in FRP composite aircraft parts removed from service

Gillet

Splawski²,

Aguirre

et al. 2023

Journal of Composite Materials

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“…One of the main disadvantages of polymeric fiber‐reinforced composites, including those based on BMI, is the propensity to absorb water and other fluids in many applications , even in typically hot, dry environments . This is especially true when considered over the expected service‐life of composite structures, which can span many years.…”

Section: Introductionmentioning

confidence: 99%

Long‐term durability of a water‐contaminated quartz‐reinforced bismaleimide laminate

2016

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The long-term structural viability of a six-ply watercontaminated quartz fiber-reinforced bismaleimide laminate is investigated via dynamic mechanical analysis and flexural strength assessment over a four-year experimental time frame. Water contamination is achieved via immersion in water at 258C for short-term (2 weeks and 1 month), long-term (6 months), and very long-term (4 years) duration. Long-term moisture uptake exhibits distinctly non-Fickian behavior. Maximum moisture content exceeds 1.5% by weight after four years of immersion. Laminates exhibit a remarkable resistance to degradation for all exposure durations. Flexural strength decreased by roughly 5% in the worst case. Further, no significant change in glass transition temperature was observed. Scanning electron microscopy revealed no micro-crack formation and a relatively low incidence of fiber-matrix debond. Experimental evidence suggests that quartz fiberreinforced bismaleimide is a viable option for longterm moisture-prone structural applications at moderate temperatures. POLYM. COMPOS., 00:000-000, 2016. POLYMER COMPOSITES-2018 FIG. 2. Experimental flexure stress vs. strain for dry, and watercontaminated (immersed two weeks and one month) six-ply BMI/quartz laminates. FIG. 7. Storage modulus vs. temperature of long-term (over four years) water-immersed BMI/quartz laminates.

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Effect of a deicing fluid on the durability of carbon/epoxy composites

Cited by 2 publications

References 9 publications

Use of Karl Fischer titration for the localized measurement of water content in FRP composite aircraft parts removed from service

Use of Karl Fischer titration for the localized measurement of water content in FRP composite aircraft parts removed from service

Long‐term durability of a water‐contaminated quartz‐reinforced bismaleimide laminate

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