Affiliation:
1. Korea University
2. Andong National University
3. CAE Team
4. Korea Sport Science Institute
Abstract
The diverse studies on Al/GFRP laminates with the circular holes, therefore, have been
carried out recently. The recent studies just focused on the behavior of the fatigue crack
propagation and the delamination when the shape and the size of the notches were changed.
Therefore, this study evaluated the location effect of the defects in the vicinity of the circular notch
of the high strength monolithic aluminum and Al/GFRP laminates on the initiation life (Ni) of the
fatigue cracks, the relationship between the crack length (a) and the fatigue life (N). In addition,
the fatigue crack behavior of Al/GFRP laminates was studied when the fatigue loading and the
interlaminar delamination took place at the same time during crack propagation. In conclusions,
(1) for the monolithic aluminum, 10% of the failure life at θ2=30° was more increased than that at
θ3=60°. (2) The crack length and the fatigue life behavior of Al/GFRP laminates according to the
location of the artificial defect were different from those of the monolithic aluminum. Namely, the
fatigue life of θ1=0° and θ2=30° were remarkably shorter than those of θ3=60° and θ4=90°.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
Reference4 articles.
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2. Song S. H. and Kim C. W.: Transactions of the KSME, A, Vol. 28, No. 1 (2004), pp.55-62.
3. Murakami Y. and Nemat-Nasser S.: Engineering Fracture Mechanics, Vol. 16 (1982), pp.373-386.
4. Partl O. and Schijve J.: International Journal of Fatigue, Vol. 15, No. 4 (1993), pp.293-299.
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