期刊
JOURNAL OF COMPOSITE MATERIALS
卷 43, 期 9, 页码 977-985出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/0021998308097735
关键词
carbon nanotubes; fracture toughness; Mode I; Mode II; carbon fibers
In the present study, the fracture energy of hybrid carbon fiber reinforced polymers was investigated. The composites were modified by the addition of multi-walled carbon nanotubes into the matrix material. The interlaminar fracture properties under Mode I and Mode II remote loading were studied as a function of the carbon nanotube content in the matrix. With the addition of carbon nanotubes in the epoxy matrix, a significant increase in the load bearing ability as well as in the fracture energy was observed, for both Mode I and Mode II tests. It is speculated that carbon nanotubes due to their large aspect ratio have a significant toughening effect since extra energy is needed in order to pull them out from the matrix and start the crack propagation following a kinking out pattern at nanoscale.
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