SYMPOSIA PAPER Published: 01 January 1995
STP14031S

Delamination in Composites with Terminating Internal Plies Under Tension Fatigue Loading

Source

Tension-tension fatigue tests have been undertaken on glass-fiber and carbon-fiber epoxy specimens with terminated internal plies. All specimens delaminated along the interfaces between the continuous and discontinuous plies. Delamination starts immediately, and the rate is approximately constant. Different specimens delaminate at different rates. However, when the strain-energy-release-rate amplitudes are normalized by the values for delamination under static loading, the delamination rates for all the specimens of both glass and carbon epoxy are very similar.

Terminated 0° plies are much more susceptible to delamination than ±45° plies. The number of plies terminated together has a large effect on delamination. Tapered sections with dropped plies are stronger than equivalent untapered sections with cut plies. Delamination at terminated plies can cause a significant reduction in fatigue strength, especially for carbon-fiber epoxy.

Author Information

Wisnom, MR
China Ship Scientific Research Centre, Wuxi, Jiang Su, China
Jones, MI
China Ship Scientific Research Centre, Wuxi, Jiang Su, China
Cui, W
China Ship Scientific Research Centre, Wuxi, Jiang Su, China
Price: $25.00
Contact Sales
Related
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Details
Developed by Committee: D30
Pages: 486–508
DOI: 10.1520/STP14031S
ISBN-EB: 978-0-8031-5297-7
ISBN-13: 978-0-8031-2012-9