Sociedad Española de Integridad Estructural
Grupo Español de Fractura

Sociedad Española de Integridad Estructural
Grupo Español de Fractura

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COMPLIANCE REAL TIME MONITORING IN MODE II DELAMINATION FATIGUE TESTS

J. Vicens  J. Costa  J. Renart      

Anales de la Mecánica de la Fractura, nº 27 . 2010 . Pág. -
Ver (.pdf): 116

Resumen: An experimental investigation of crack growth under fatigue loading on epoxy resin reinforced with unidirectional carbon fibre and which focuses on the introduction of a new methodology based on real-time monitoring of the compliance is presented. The new methodology is based on a new definition of the compliance as the ratio of load and displacement amplitudes applied in fatigue tests. This new definition allows the value of the compliance of the specimen, in spite of the non-linearities introduced by fixtures and load application during the test, to be obtained. In the experimental program to validate the new methodology, 3ENF fatigue tests were carried out to obtain the onset of crack growth and the associated da/dN-Gmax curves for ratio R=0.1 and 5 Hz frequency. The fatigue tests were carried out for different GC rates (10%, 20%, 30%, 40%, etc.). Onset curve and crack growth rate for AS4/3501 are presented.

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AMADE. Analysis and Advanced Materials for Structural Design, Escola Politècnica Superior, EPS. Universitat de Girona, UdG, Campus Montilivi s/n. 17071 Girona, Spain
AMADE. Analysis and Advanced Materials for Structural Design, Escola Politècnica Superior, EPS. Universitat de Girona, UdG, Campus Montilivi s/n. 17071 Girona, Spain
AMADE. Analysis and Advanced Materials for Structural Design, Escola Politècnica Superior, EPS. Universitat de Girona, UdG, Campus Montilivi s/n. 17071 Girona, Spain




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