Fatigue Crack Growth In Fibre Reinforced Metal
Laminates
Author(s)
K. Brown & A. Young
Abstract
In order to increase understanding of the mechanisms involved in the fatigue
crack growth behaviour of fibre reinforced metal laminates (FRMLs),
experimental and theoretical studies have been carried out at DERA. A wide
variety of FRMLs has been investigated, including ARALL 1,2,3 and 4
laminates with unidirectional aramid fibres and GLARE 1,2,3 and 4 laminates
with unidirectional and cross-plied glass fibres. The FRMLs had from two to
five metal layers, each 0.2mm or 0.3mm thick. Fatigue crack growth rates were
measured for constant amplitude loading at different stress levels and R-ratios.
Damage in the laminates, including delamination and broken fibres, was
measured fractographically. SPATE scans were also used to monitor
delamination. A three-dimensional FE model has been developed specifically for
stress analysis of FRMLs
Keywords
Related Book
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