Work

Size Effects on Tensile Strength and Fracture Behavior of Carbon Nanotubes

Year: 2026

Type: article

Abstract: In this paper, the differences in mechanical properties and fracture behavior between singlewalled (SW), bundled, and yarned carbon nanotubes (CNTs) are described.The three types of CNTs are subjected to a quasi-static uniaxial tensile test to investigate their Young's modulus, strength, and fracture behavior.All the samples were fractured in a brittle manner.The mean Young's modulus and strength of SWCNTs were 1 TPa and 60 GPa, respectively, which markedly decreased with increasing diameter for bundled and yarned CNTs.Fracture surface observation suggested that each type of CNT fractured in a different manner: SWCNTs were split instantly, bundled CNTs broke as the outer and inner CNTs slipped against each other, and yarned CNTs were torn apart and fractured.The differences in fracture mechanisms are discussed on basis of Raman mapping results.

Source: Sensors and Materials

DOI: 10.18494/sam5980

Authors: Abbhiraj Singh, Lucas Varano, Masao Torii, Adam C. Powell, Amit Banerjee, Takahiro Namazu

Institutions: Kyoto University of Advanced Science, Worcester Polytechnic Institute, Tohoku University

Language: English

Topic: Carbon Nanotubes in Composites

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $748

OpenAlex ID: W7124459196