Increasing Fracture Toughness for 3D Multiscale Carbon Nanotube and Carbon Fiber Reinforced Composites

Yan Deng; Li Yong Tong

doi:10.4028/www.scientific.net/KEM.713.131

Paper Titles

Development and Numerical Implementation of an Anisotropic Continuum Damage Model for Concrete
p.115

Nonlinear Solution of Steel Arch Supports
p.119

Determination of Initial Stages of Fatigue on the Basis of Fatigue Tensile and Fatigue Bend Testing
p.123

Simulation of Lamb Wave Propagation in Composite Structures Based on the Finite Element Stacked Shell Method
p.127

Increasing Fracture Toughness for 3D Multiscale Carbon Nanotube and Carbon Fiber Reinforced Composites
p.131

Structural Health Monitoring of Bonded Patch Repaired Composite
p.135

Using X-FEM for Progressive Damage Simulation of Laminated Composites Featuring Manufacturing Imperfections
p.139

Incorporation of a Fracture Criterion in Ideal Flow Design
p.143

Relationship between Grain Growth and Formation of Fracture Surface of Ultrafine Grained Cu in High-Cycle Fatigue
p.147

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Increasing Fracture Toughness for 3D Multiscale Carbon Nanotube and Carbon Fiber Reinforced Composites

Abstract:

This paper presents a new concept of forming 3D hierarchical carbon nanotube (CNT) and carbon fiber (CF) reinforced composites by using a low temperature grafting method that connects CNTs to CF surface by covalent bonding. By using amorphous carbon to join the free ends of two cantilever CNTs, it is shown via in situ scanning electron microscope (SEM) pulling out experiments that the strengths at the joint between CF-CNT and CNT-CNT junction are high and breakage occurs in CNT itself. This offers evidence that the maximum load in a typical bridging load-displacement curve could be increased, which in turn can potentially increase intralaminar and interlaminar fracture toughness of 3D multiscale CNT-CF reinforced composites.