Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
766325 | Engineering Fracture Mechanics | 2015 | 9 Pages |
Abstract
The fracture toughness of carbon fiber reinforced plastic laminates was investigated in term of modifying the epoxy matrix with the pristine and functionalized stacked-cup carbon nanofibers. The results showed that the highest enhancements in Mode I (13.6%) and Mode II (45.3%) fracture toughness were achieved by adding 0.5 wt% and 1.0 wt% functionalized nanofibers, respectively. The toughening mechanism was analyzed based on the morphology evaluations of the fracture surfaces. The evidence of bridging, pull-out, peeling-off and unravelling of nanofibers were clearly observed, which contributed to dissipating more energy for crack propagation, resulting in the improvement of fracture toughness.
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Authors
Pengfei Wang, Wanshuang Liu, Xin Zhang, Xuehong Lu, Jinglei Yang,