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Sunil Kumar B.V. https://orcid.org/0000-0002-3115-2141 Neelakantha V. Londe M. Lokesha S.N. Vasantha Kumar A.O. Surendranathan

Abstract

Carbon-Carbon Composites (C-CC), used as composites for their remarkable qualities in the space industry as well as in many other industry sectors. C-CC has proven to be the most efficient material in extreme temperature situations. One of the best high-temperature materials with good thermal quality, such as high-temperature stability, outstanding thermal conductivity and low-temperature expansion coefficients. In aircraft, railways, trucks and even race vehicles, C-CC brake disks are in high demand. In comparison to the favorable thermal and mechanical qualities of C-CC, their great sensitivity to oxidation in an oxidizing environment at temperatures even around 400°C is a major restriction with these composites. In particular, a study of the C-CC oxidation mechanism helps to create protective measures for these composites. The present experimental study explores the influence of oxidation in static air on the fracture toughness of C-CC. At a temperature of around 400°C to 700°C in an increase of 100°C, an oxidation evaluation of the material was carried out in static air. Results show a decrease in fracture toughness to increase in the temperature. We can observe that C-CC fracture toughness is severely affected by oxidation. The variation began at 400°C from 6% and was anticipated at 700°C up to 45%.

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    Section
    Fracture

    How to Cite

    Kumar B.V., S., Londe, N. V., Lokesha, M., Vasantha Kumar, S. and Surendranathan, A. (2021) “Influence of Oxidation on Fracture Toughness of Carbon-Carbon Composites for High-Temperature Applications”, Frattura ed Integrità Strutturale, 15(58), pp. 105–113. doi: 10.3221/IGF-ESIS.58.08.