The finite element method is used to analyze the effect of hygrothermal aging of composite on the stress intensity factor (SIF) variation for the crack repaired with bonded composite patch. Cracks were created by subjecting an aluminium plate to uniaxial tensile load. The cracks were repaired with a bonded hygrothermal aged glass-epoxy composite patch. The results show that moisture absorption has a negative effect on the repair performance. Indeed, the stress intensity factor increases with an increase in the water absorption in both mode I and mixed mode of crack propagation. The fatigue life of the repaired structures decreases with the increase in water absorption by the composite patch.
Effect of composite hygrothermal aging on the SIF variation in bonded composite repair of aircraft structures
Journal of Reinforced Plastics and Composites ; 29 , 24 ; 3631-3636
2010
6 Seiten, 8 Bilder, 1 Tabelle, 29 Quellen
Aufsatz (Zeitschrift)
Englisch
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