Enhanced fracture toughness of carbon fabric/epoxy laminates with pristine and functionalized stacked-cup carbon nanofibers

Pengfei Wang; Wanshuang Liu; Xin Zhang; Xuehong Lu; Jinglei Yang

doi:10.1016/j.engfracmech.2015.09.010

Enhanced fracture toughness of carbon fabric/epoxy laminates with pristine and functionalized stacked-cup carbon nanofibers

Pengfei Wang, Wanshuang Liu, Xin Zhang, Xuehong Lu^*, Jinglei Yang

^*Corresponding author for this work

Nanyang Technological University

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

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.

Original language	English
Pages (from-to)	73-81
Number of pages	9
Journal	Engineering Fracture Mechanics
Volume	148
DOIs	https://doi.org/10.1016/j.engfracmech.2015.09.010
Publication status	Published - Nov 1 2015
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2015 Elsevier Ltd.

ASJC Scopus Subject Areas

General Materials Science
Mechanics of Materials
Mechanical Engineering

Keywords

Carbon fiber reinforced plastics
Fracture toughness
Stacked-cup carbon nanofibers

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10.1016/j.engfracmech.2015.09.010

Cite this

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title = "Enhanced fracture toughness of carbon fabric/epoxy laminates with pristine and functionalized stacked-cup carbon nanofibers",

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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T1 - Enhanced fracture toughness of carbon fabric/epoxy laminates with pristine and functionalized stacked-cup carbon nanofibers

AU - Wang, Pengfei

AU - Liu, Wanshuang

AU - Zhang, Xin

AU - Lu, Xuehong

AU - Yang, Jinglei

PY - 2015/11/1

Y1 - 2015/11/1

N2 - 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.

AB - 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.

KW - Carbon fiber reinforced plastics

KW - Fracture toughness

KW - Stacked-cup carbon nanofibers

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Enhanced fracture toughness of carbon fabric/epoxy laminates with pristine and functionalized stacked-cup carbon nanofibers

Abstract

Bibliographical note

ASJC Scopus Subject Areas

Keywords

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