Effect of carbon nanofibre addition on the mechanical properties of different Vf carbon-epoxy composites

Carbon-epoxy (C-epoxy) laminated composites having different fibre volume fractions (40, 50, 60 and 70) were fabricated with and without the addition of aminofunctionalized carbon nanofibres (A-CNF). Flexural strength, interlaminar shear strength (ILSS) and tensile strength of the composite laminate...

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Published inBulletin of materials science Vol. 38; no. 2; pp. 309 - 317
Main Authors SRIKANTH, I, KUMAR, SURESH, SINGH, VAJINDER, RANGABABU, B, GHOSAL, PARTHA, SUBRAHMANYAM, Ch
Format Journal Article
LanguageEnglish
Published Bangalore, India Indian Academy of Sciences 01.04.2015
Springer Nature B.V
Subjects
Carbon
Chemistry and Materials Science
Engineering
Epoxy resins
Failure
Laminates
Materials Science
Mechanical properties
Scanning electron microscopy
Shear strength
Standard deviation
Tensile strength
United States > US
delamination
Carbon-epoxy composite laminates
carbon nanofibre
mechanical properties
fibre volume fraction
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Summary:Carbon-epoxy (C-epoxy) laminated composites having different fibre volume fractions (40, 50, 60 and 70) were fabricated with and without the addition of aminofunctionalized carbon nanofibres (A-CNF). Flexural strength, interlaminar shear strength (ILSS) and tensile strength of the composite laminates were determined. It was observed that, the ability of A-CNF to enhance the mechanical properties of C-epoxy diminished significantly as the fibre volume fraction ( V f ) of the C-epoxy increased from 40 to 60. At 70 V f , the mechanical properties of the A-CNF reinforced C-epoxy were found to be lower compared to the C-epoxy composite made without the addition of A-CNF. In this paper suitable mechanisms for the observed trends are proposed on the basis of the fracture modes of the composite.
ISSN:0250-4707
0973-7669
DOI:10.1007/s12034-015-0841-z