Flexural fatigue properties and failure propagation of 3D stitched composites under 3-point bending loading

• The static and fatigue flexural properties of 3D stitched composite were investigated. • The failure propagation and morphologies of 3D stitched composite were captured in detail by using the high-speed camera. • The flexural fatigue failure mechanism of 3Dstitched composite is related to the stress levels. • The breakage of stitching yarns can be used to estimate the catastrophic failure of 3D stitched composite. This work investigated the...