HOW CAN THE CHOICE OF MATERIALS IMPROVE THE STRENGTH-TO-WEIGHT RATIO AND SUSTAINABILITY IN AEROSPACE APPLICATIONS?

This systematised literature review explores current materials that optimise both strength-to-weight ratio and sustainability in aerospace applications, a critical challenge to reducing the industry's environmental impact while maintaining high-performance standards. The review focuses on the properties and applications of Carbon Fibre-Reinforced Polymers (CFRPs), Glass Fibre-Reinforced Polymers (GFRPs), and Aluminium Alloys (AAs). Through a detailed review of these materials, the paper evaluates their ability to address the issues of both high performance through strength-to-weight ratios and sustainability through recyclability and reusability. The findings highlight that CFRPs offer superior strength-to-weight ratios but face sustainability challenges due to recycling difficulties. GFRPs, while less strong, provide a more cost-effective and recyclable option suitable for secondary structures. Aluminum Alloys, particularly the 2XXX and 7XXX series, offer high performance and recyclability with some drawbacks, making them a viable choice for various aerospace components. This study addresses the need to understand which materials provide high strength while maintaining low weight in aerospace applications; simultaneously, there is a pressing need to address sustainability through recyclability and reusability in the aerospace industry.