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147 Effect of loading pattern on fatigue behavior of laminated composites
A.Vahid Movahedi-Rad, Thomas Keller, Anastasios Vassilopoulos

Ecole Polytechnique Fédérale de Lausanne

Published: 11 June 2018 by MDPI AG in Proceedings of The Eighteenth International Conference of Experimental Mechanics in The Eighteenth International Conference of Experimental Mechanics
MDPI AG, Volume 2; 10.3390/ICEM18-05321

The effect of load interruptions on the fatigue behavior of (±45)2S angle-ply glass/epoxy composite laminates was investigated in this work. Constant amplitude fatigue experiments were performed at different stress levels to derive base line fatigue data. In addition, interrupted-fatigue experiments were performed by removing the cyclic loading for two hours repetitively, after cycling for 20% of the fatigue life achieved under continuous loading at the same maximum cyclic stress level. The specimens loaded under interrupted fatigue exhibited longer fatigue live than those continuously loaded until failure.

Keywords: fatigue, Failure, dissipated energy, Interrupted Loading, Self-generated Temperature

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