PSI - Issue 25

Dalbir Singh et al. / Procedia Structural Integrity 25 (2020) 159–171

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Dalbir Singh et. al. Structural Integrity Procedia 00 (2019) 000 – 000

4. Conclusion

This work aimed to study the tensile, flexural and impact response of a carbon fibre composite after immersion in aviation grade fluids, Aviation Gasoline (Avgas100LL), Aviation Turbine Fuel (ATF-K50) and an extra high performance lubricating fluid OX -38). It is possible to conclude that three grade fluids affect the tensile, flexural and impact strength composite material when exposed to aviation grade fluids for a defined duration, relative to the control sample. Finally, the tensile, flexural and impact strength of the composite material decreases with the exposure duration for three grade fluids. From the above data, it was observed that Aviation Gasoline (Avgas) displayed negligible effects on the carbon fibre/phenolic resin composite while the OX – 38, found was found to affect the composite significantly. ATF showed moderate influence on the mechanical properties of carbon fibre. Finally, the effect weight gain also reduces the tensile, flexural and impact strength of samples due to interaction of OX-38 at the interface between matrix and fires. According to this study, the degradation observed in the mechanical properties can be explained by the low value tensile, flexural and impact strength, in terms of matrix and matrix/fibre interface degradation due to immersion. In this context, the load carrying capacity of the composites decreases. Finally, the load carrying capacity of the composites decreases severel y for lubricating fluid (OX -38). Therefore, it can be said that the application for carbon fibre in the fabrication of fuel tanks for aircrafts is feasible. Acknowledgements This research was funded by the authors themselves. We would like to acknowledge the Hindustan Institute of Technology & Science, India for allowing us to have access to their manufacturing facilities. 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