Bearing failure of pseudo-ductile thin ply angle-ply laminates

Wu, Xun; Fuller, Jonathan; Fotouhi, Mohammad; Wisnom, Michael

Abstract

The aim of this work is to investigate the bearing failure of mechanically fastened joints between thin-ply angle-ply laminates with central 0° plies. To achieve this, pseudo-ductile laminates with two different layups [±6/0]s2 and [±2/0]s4 were loaded in a double shear-lap bolted joint configuration in tension. The major focuses of the experiments were to investigate the bearing strength and compare the bearing behaviour between pseudo-ductile laminates with different layups. Constant clamping pressure, edge distance-to-diameter ratio and width-to-diameter ratio were selected across the tests. Although gradual failure was exhibited in both layups, the [±6/0]s2 laminate has shown a higher bearing strength and larger deformation at the hole edge compared to the [±2/0]s4 laminate. The damage mechanisms of both layups were also similar, in the sequence of compressive damage at the hole edge, splitting in angle plies, tensile fracture and tear-out failure.

• Presentation Conference Type: Presentation / Talk
• Conference Name: 18 European Conference on Composite Materials -ECCM 18
• Acceptance Date: Mar 19, 2018
• Publication Date: Jun 23, 2018
• Deposit Date: Jul 20, 2018
• Publicly Available Date: Aug 3, 2018
• Peer Reviewed: Peer Reviewed
• Keywords: pseudo-ductility, thin plies, angle-ply, bearing, failure mechanisms
• Public URL: https://uwe-repository.worktribe.com/output/866188
• Additional Information: Title of Conference or Conference Proceedings : 18 European Conference on Composite Materials -ECCM 18
• Contract Date: Jul 20, 2018