Damage evolution in braided composite tubes under torsion studied by in-situ X-ray computed tomography

Here we present the first real-time three dimensional (3D) observations of damage evolution in a carbon fibre reinforced polymer (CFRP) composite tube under torsion. An in-situ torsion test of 1/1 45° (diamond) braided carbon fibre-epoxy circular composite tube was performed and the damage process was characterised by synchrotron X-ray computed tomography (CT). A number of damage modes and their damage sequence has been identified and monitored...