Development of Braided Rivets for Composite Structures

PROJECT COST:

217 010 $

PRIMA CONTRIBUTION:

86 800 $

PROJECT DETAILS:

The increasing use of advanced composite materials in primary aircraft structures has introduced new challenges for the aerospace industry. The assembly of these lightweight, high-performance components remains largely dependent on mechanical fastening, as structural adhesive bonding does not fully satisfy the certification requirements established by aviation regulatory authorities. Consequently, heavy titanium bolts are commonly used, and the drilling accuracy required prior to fastening is significantly more stringent than that for conventional metallic structures.

This research project aims to develop a composite rivet specifically designed for composite structures. The proposed technology is expected to reduce structural weight while relaxing the drilling tolerance requirements through the deformation of the rivet during installation. Furthermore, the use of composite materials compatible with the host structure will help prevent galvanic corrosion and reduce the risks associated with electrostatic discharge.

The project will focus on the development of a pultrusion process for manufacturing the composite rivets, the design of an appropriate riveting process, and the experimental evaluation of the mechanical performance of riveted joints. This innovative fastening technology will provide a new solution for the assembly of composite structures, addressing the limitations of current joining methods.