Abstract
In this work, manufacturing techniques and mode-I interlaminar mechanical properties of fibre metal laminates (FML) based on aluminium alloy 2017 and glass fibre reinforced plastic (GFRP) were investigated. Various toughening techniques including patterned surface manufacturing and acid etching on Al, and addition of carbon nanofibres between Al and the GFRP were employed to improve the interlaminar fracture toughness of the Al/GFRP laminates. The double cantilever beam (DCB) tests indicated that the combination of these toughening techniques can significantly enhance the mode-I fracture toughness and resistance of the Al/GFRP laminates. Crack propagation path and fractured surface were observed by confocal laser scanning microscopy to interpret the improvement mechanism of interlaminar mechanical properties.
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