TY - JOUR AU - Kumar B.V., Sunil AU - Londe, Neelakantha V. AU - Lokesha, M. AU - Vasantha Kumar, S.N. AU - Surendranathan, A.O. PY - 2021/09/25 Y2 - 2024/03/28 TI - Influence of Oxidation on Fracture Toughness of Carbon-Carbon Composites for High-Temperature Applications JF - Frattura ed Integrità Strutturale JA - Fra&IntStrut VL - 15 IS - 58 SE - Fracture DO - 10.3221/IGF-ESIS.58.08 UR - https://www.fracturae.com/index.php/fis/article/view/3154 SP - 105-113 AB - <p>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%.</p> ER -