On the effective elastic moduli of carbon nanotubes for nanocomposite structures

被引:169
作者
Lau, KT [1 ]
Chipara, M
Ling, HY
Hui, D
机构
[1] Hong Kong Polytech Univ, Dept Mech Engn, Kowloon, Hong Kong, Peoples R China
[2] Indiana Univ, Cyclotron Facil, Bloomington, IN 47408 USA
[3] Univ New Orleans, Dept Mech Engn, New Orleans, LA 70148 USA
关键词
nanostructures; mechanical properties; carbon nanotubes;
D O I
10.1016/j.compositesb.2003.08.008
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A critical review on the validity of different experimental and theoretical approaches to the mechanical properties of carbon nanotubes for advanced composite structures is presented. Most research has been recently conducted to study the properties of single-walled and multi-walled carbon nanotubes. Special attention has been paid to the measurement and modeling of tensile modulus, tensile strength, and torsional stiffness. Theoretical approaches such as molecular dynamic (MD) simulations, finite element analysis, and classical elastic shell theory were frequently used to analyze and interpret the mechanical features of carbon nanotubes. Due to the use of different fundamental assumptions and boundary conditions, inconsistent results were reported. MD simulation is a well-known technique that simulates accurately the chemical and physical properties of structures at atomic-scale level. However, it is limited by the time step, which is of the order of 10(-15) s. The use of finite element modeling combined with MD simulation can further decrease the processing time for calculating the mechanical properties of nanotubes. Since the aspect ratio of nanotubes is very large, the elastic rod or beam models can be adequately used to simulate their overall mechanical deformation. Although many theoretical studies reported that the tensile modulus of multi-walled nanotubes may reach 1 TPa, this value, however, cannot be directly used to estimate the mechanical properties of multi-walled nanotube/polymer composites due to the discontinuous stress transfer inside the nanotubes. (C) 2003 Elsevier Ltd. All rights reserved.
引用
收藏
页码:95 / 101
页数:7
相关论文
共 34 条
[1]   Size-dependent elastic properties of a single-walled carbon nanotube via a molecular mechanics model [J].
Chang, TC ;
Gao, HJ .
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS, 2003, 51 (06) :1059-1074
[2]   Detachment of nanotubes from a polymer matrix [J].
Cooper, CA ;
Cohen, SR ;
Barber, AH ;
Wagner, HD .
APPLIED PHYSICS LETTERS, 2002, 81 (20) :3873-3875
[3]   Low-friction nanoscale linear bearing realized from multiwall carbon nanotubes [J].
Cumings, J ;
Zettl, A .
SCIENCE, 2000, 289 (5479) :602-604
[4]   Direct mechanical measurement of the tensile strength and elastic modulus of multiwalled carbon nanotubes [J].
Demczyk, BG ;
Wang, YM ;
Cumings, J ;
Hetman, M ;
Han, W ;
Zettl, A ;
Ritchie, RO .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2002, 334 (1-2) :173-178
[5]  
Dresselhaus M.S., 2000, Carbon Nanotubes: Synthesis, Structure, Properties, and Application
[6]   Effects of nanotube waviness on the modulus of nanotube-reinforced polymers [J].
Fisher, FT ;
Bradshaw, RD ;
Brinson, LC .
APPLIED PHYSICS LETTERS, 2002, 80 (24) :4647-4649
[7]   HELICAL MICROTUBULES OF GRAPHITIC CARBON [J].
IIJIMA, S .
NATURE, 1991, 354 (6348) :56-58
[9]   Young's modulus of single-walled nanotubes [J].
Krishnan, A ;
Dujardin, E ;
Ebbesen, TW ;
Yianilos, PN ;
Treacy, MMJ .
PHYSICAL REVIEW B, 1998, 58 (20) :14013-14019
[10]   Interfacial bonding characteristics of nanotube/polymer composites [J].
Lau, KT .
CHEMICAL PHYSICS LETTERS, 2003, 370 (3-4) :399-405