How do the mechanical properties of carbon nanotubes increase? An experimental evaluation and modeling of the engineering tensile strength of individual carbon nanotubes

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

To enable the development of multiwalled carbon nanotubes (MWCNTs) with superior mechanical properties, a theoretical model of the tensile strength of MWCNTs is developed, and the structural-mechanical property relationships of MWCNTs are investigated using experimental results obtained by uniaxial tensile tests from this study and data from the literature. We show that the nominal tensile strength is an important design factor in determining the mechanical properties of composites reinforced with carbon nanotubes (CNTs) and that the nominal (engineering) tensile strength is written as a product of the fracture strength (effective strength) and fracture cross-section ratio that can be calculated by the fracture cross-sectional area divided by the full cross-sectional area including the hollow core. Based on this model, controlling the degree of intershell crosslinking to produce clean break fractures in the nanotube shells without a dramatic degradation of the fracture strength is important for improving the nominal tensile strength.

Original languageEnglish
Article number055047
JournalMaterials Research Express
Volume6
Issue number5
DOIs
Publication statusPublished - 2019

Keywords

  • carbon nanotubes
  • composites
  • mechanical properties
  • tensile testing
  • yarns

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Metals and Alloys

Fingerprint

Dive into the research topics of 'How do the mechanical properties of carbon nanotubes increase? An experimental evaluation and modeling of the engineering tensile strength of individual carbon nanotubes'. Together they form a unique fingerprint.

Cite this