Evaluation of the mechanical properties of ultrathin CNTs reinforced composites for deployable structures

The space industry continuously seeks lighter and higher-performance materials to improve the efficiency and reliability of spacecraft structures. This is particularly true for deployable boom structures, slender elements stowed during launch and extended in orbit to support antennas, solar panels, or sensors, where minimizing mass while maintaining sufficient stiffness and strength is essential for successful deployment and long-term stability. This study investigates the potential of incorporating carbon nanotubes (CNTs) into conventional carbon fiber reinforced polymers (CFRPs) for future application in deployable booms. Composite laminates were fabricated and characterized through tensile and column bending tests to evaluate their mechanical performance. The resulting material properties were then used in a buckling analysis of deployable booms, as buckling represents a critical design factor. The outcomes aim to assess whether CNT-enhanced CFRPs are a viable option for manufacturing next-generation space deployable boom structures. © 2026, Association of American Publishers. All rights reserved.