This study aims to examine the influence of prolonged cryogenic cyclic ageing on the mechanical and thermal behaviour of hybrid composites reinforced with jute and cotton fibres. With increasing demand for sustainable materials in structural applications, understanding their behaviour in extreme environments is critical.
The fabrication of hybrid composites was carried out via the hand lay-up technique, wherein jute and cotton fibres were incorporated into a polymer matrix to form a layered composite structure. These samples were then subjected to repeated cryogenic ageing cycles to replicate prolonged exposure to low-temperature environments. Mechanical performance was assessed through flexural and impact strength tests, while thermal behaviour was evaluated using thermogravimetric analysis and differential scanning calorimetry.
Cryogenic exposure led to observable changes in both the mechanical properties and thermal stability of the composites. Specifically, the structural integrity and resistance to thermal degradation of the composites were significantly affected by both the duration and frequency of cryogenic cycles.
This study provides new insights into the cryogenic durability of natural fibre-reinforced hybrid composites. The findings contribute valuable data for the application of such materials in aerospace, cryogenic storage, and other extreme temperature environments.
