The effect of thickness on the multiwalled carbon nanotubes performance in glass/epoxy composite laminates under dynamic loading

2021 ◽  
Author(s):  
Mohammad Emdadi Derabi ◽  
Milad Sangsefidi ◽  
Omid Rahmani
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Dynamic Loading ◽  
Composite Laminates ◽  
Epoxy Composite ◽  
Multiwalled Carbon

Effect of Distribution Media Length and Multiwalled Carbon Nanotubes on the Formation of Voids in VARTM Composites

2011 ◽  
Vol 133 (4) ◽  
Author(s):  
Levent Aktas ◽  
Duane P. Bauman ◽  
Scott T. Bowen ◽  
Mrinal C. Saha ◽  
M. Cengiz Altan
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Composite Laminates ◽  
Flexural Properties ◽  
Mechanical Mixing ◽  
Multiwalled Carbon ◽  
Three Point Bending ◽  
Air Pockets ◽  
Nanotube Dispersion

The first part of this paper characterizes the effect of tooling and process parameters such as the length of distribution media used in vacuum assisted resin transfer molding (VARTM) of composite laminates. To achieve this goal, a number of 6-ply, woven carbon fiber/epoxy laminates are fabricated by using various lengths of distribution media. The spatial variations of mechanical properties of these laminates are characterized using a three-point bending fixture. It is shown that for relatively thinner laminates, extending the distribution media degrades the flexural properties by as much as 14%, possibly due to air pockets entrapped during through-the-thickness impregnation of the fibrous fabric. In the second part, a minimum distribution media length is used to investigate the mechanical property and microstructure changes due to multiwalled carbon nanotubes (MWNTs) dispersed in the composite laminates. In addition, effects of different nanotube functionalization and morphology are characterized via scanning electron microscopy and optical microscopy. To achieve adequate nanotube dispersion in the epoxy resin, both tip sonication and mechanical mixing have been used. The effect of sonication time on the dispersion of nanotubes is reported by monitoring the temporal changes in the nanotube cluster size. Even at volume fractions less than 1%, almost 10% improvements in flexural properties is observed. Extensive void formations are reported for laminates containing MWNTs, possibly preventing greater improvements in mechanical properties.

scholarly journals Synergetic Effects of Mechanical Properties on Graphene Nanoplatelet and Multiwalled Carbon Nanotube Hybrids Reinforced Epoxy/Carbon Fiber Composites

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Pin-Ning Wang ◽  
Tsung-Han Hsieh ◽  
Chin-Lung Chiang ◽  
Ming-Yuan Shen
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Carbon Fiber ◽  
Composite Laminates ◽  
Epoxy Composite ◽  
Fiber Composite ◽  
Synergetic Effect ◽  
Carbon Fiber Composites ◽  
Carbon Fiber Composite ◽  
Multiwalled Carbon

Graphene nanoplatelets (GNPs) and carbon nanotubes (CNTs) are novel nanofillers possessing attractive characteristics, including robust compatibility with most polymers, high absolute strength, and cost effectiveness. In this study, an outstanding synergetic effect on the grapheme nanoplatelets (GNPs) and multiwalled carbon nanotubes (CNTs) hybrids were used to reinforce epoxy composite and epoxy/carbon fiber composite laminates to enhance their mechanical properties. The mechanical properties of CNTs/GNPs hybrids on a fixed weight fraction (1 wt%) with mixing different ratio reinforced epoxy nanocomposite, such as ultimate tensile strength and flexure properties, were investigated. The mechanical properties of epoxy/carbon fiber composite laminates containing different proportions of CNTs/GNPs hybrids (0.5, 1.0, 1.5 wt%) were increased over that of neat laminates. Consequently, significant improvement in the mechanical properties was attained for these epoxy resin composites and carbon fiber-reinforced epoxy composite laminates.

Tuning the insulator to conductor transition in a multiwalled carbon nanotubes/epoxy composite at substatistical percolation threshold

2009 ◽  
Vol 95 (15) ◽  
pp. 153106 ◽  
Author(s):  
Gabriella Faiella ◽  
Filomena Piscitelli ◽  
Marino Lavorgna ◽  
Vincenza Antonucci ◽  
Michele Giordano
Keyword(s):  
Carbon Nanotubes ◽  
Percolation Threshold ◽  
Multiwalled Carbon Nanotubes ◽  
Epoxy Composite ◽  
Multiwalled Carbon

Effect of seawater ageing on interlaminar fracture toughness of carbon fiber/epoxy composites containing carbon nanofillers

2018 ◽  
Vol 37 (22) ◽  
pp. 1346-1359 ◽  
Author(s):  
Julio Alejandro Rodríguez-González ◽  
Carlos Rubio-González ◽  
José de Jesús Ku-Herrera ◽  
Lourdes Ramos-Galicia ◽  
Carlos Velasco-Santos
Keyword(s):  
Carbon Nanotubes ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Multiwalled Carbon Nanotubes ◽  
Composite Laminates ◽  
Double Cantilever Beam ◽  
Multiwalled Carbon ◽  
Reduced Graphene ◽  
Carbon Nanofillers ◽  
Carbon Fiber Epoxy

This work reports the influence of seawater ageing on the mode I and mode II interlaminar fracture toughness ([Formula: see text] and [Formula: see text]) of prepreg-based unidirectional carbon fiber/epoxy laminates containing carbon nanofillers. Double cantilever beam and end notched flexure specimens were fabricated from composite laminates containing multiwalled carbon nanotubes and/or reduced graphene oxide at their middle plane interface. Experimental results showed that the addition of carbon nanofillers moderately increased the [Formula: see text] and [Formula: see text] propagation of composite laminates before and after their immersion in seawater with respect to the reference laminate under dry condition. For double cantilever beam and end notched flexure specimens aged in seawater, it was observed that [Formula: see text] and [Formula: see text] increased by 57% and 13% for specimens with multiwalled carbon nanotube/reduced graphene oxide hybrid combination, 39% and 4% for specimens with multiwalled carbon nanotubes and 53% and 8% for specimens with reduced graphene oxide respectively, as a consequence of the plasticization effect of seawater immersion on the matrix. Fracture surface examination by scanning electron microscopy revealed interlaminar failure associated to mode I and mode II delamination and toughening mechanisms produced by the multiwalled carbon nanotubes and reduced graphene oxide at delaminated regions of composite laminates.

Effect of Multiwalled Carbon Nanotubes On Mechanical Properties of Concrete

2012 ◽  
Vol 2 (6) ◽  
pp. 166-168 ◽  
Author(s):  
Dr.T.Ch.Madhavi Dr.T.Ch.Madhavi ◽  
◽  
Pavithra.P Pavithra.P ◽  
Sushmita Baban Singh Sushmita Baban Singh ◽  
S.B.Vamsi Raj S.B.Vamsi Raj ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Multiwalled Carbon
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