Passive vibration damping enhancement using carbon nanotube-epoxy reinforced composites

被引：193

作者：

Rajoria, H ^{[1
]}

Jalili, N ^{[1
]}

机构：

[1] Clemson Univ, Dept Mech Engn, Smart Struct & Nanoelectromech Syst Lab, Clemson, SC 29634 USA

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2005年 / 65卷 / 14期

基金：

美国国家科学基金会;

关键词：

carbon nanotube reinforced composites; passive vibration control; stiffness and damping characteristics;

D O I：

10.1016/j.compscitech.2005.05.015

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

in this paper, the stiffness and damping properties of carbon nanotube-epoxy composites are examined for use in structural vibration applications. The influence of several parameters such as nanotube proportion (weight ratio), nanotube type and frequency dependence is analyzed. Both single-walled and multi-walled nanotube-epoxy composites are prepared with different proportion of nanotubes. Free and forced vibration tests are conducted on these samples (in the form of cantilevered beams) to extract natural frequency and damping ratio from the acquired responses. To determine frequency dependent characteristics, the beam length is varied and these tests are repeated. It is observed that enhancement in damping ratio is more dominant than enhancement in stiffness by using carbon nanotube reinforcement. Multi-walled nanotubes are observed to be a better reinforcement than single-walled nanotubes. Up to 700% increase in damping ratio is observed for multi-walled nanotube-epoxy beam as compared to the plain epoxy beam. Another important observation is the maximum increase in damping ratio versus nanotube weight ratio curve for both multi-walled nanotube and single-walled nanotube reinforcements. This indicates a limit on the enhancement in damping ratio that can be achieved by utilizing carbon nanotubes in epoxy. Results of the forced vibration tests also indicate damping enhancement for higher modes of vibration. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：2079 / 2093

页数：15

共 21 条

[1] Mechanical and electrical properties of a MWNT/epoxy composite [J].

Allaoui, A ;

Bai, S ;

Cheng, HM ;

Bai, JB .

COMPOSITES SCIENCE AND TECHNOLOGY, 2002, 62 (15) :1993-1998

[2] Carbon nanotubes: nanomechanics, manipulation, and electronic devices [J].

Avouris, P ;

Hertel, T ;

Martel, R ;

Schmidt, T ;

Shea, HR ;

Walkup, RE .

APPLIED SURFACE SCIENCE, 1999, 141 (3-4) :201-209

[3]

Gibson R.F., 1994, PRINCIPLES COMPOSITE

[4]

HERNANDEZ E, 1999, APPL PHYS A, V69, P255

[5] HELICAL MICROTUBULES OF GRAPHITIC CARBON [J].

IIJIMA, S .

NATURE, 1991, 354 (6348) :56-58

[6] Multifunctional structural reinforcement featuring carbon nanotube films [J].

Koratkar, NA ;

Wei, BQ ;

Ajayan, PM .

COMPOSITES SCIENCE AND TECHNOLOGY, 2003, 63 (11) :1525-1531

[7] Effectiveness of using carbon nanotubes as nano-reinforcements for advanced composite structures [J].

Lau, KT ;

Hui, D .

CARBON, 2002, 40 (09) :1605-1606

[8] Toughness improvement of epoxy by incorporating carbon nanotubes into the resin [J].

Li, D ;

Zhang, XF ;

Sui, G ;

Wu, DH ;

Liang, J ;

Yi, XS .

JOURNAL OF MATERIALS SCIENCE LETTERS, 2003, 22 (11) :791-793

[9] Electrical properties of single wall carbon nanotube reinforced polyimide composites [J].

Ounaies, Z ;

Park, C ;

Wise, KE ;

Siochi, EJ ;

Harrison, JS .

COMPOSITES SCIENCE AND TECHNOLOGY, 2003, 63 (11) :1637-1646

[10] Mechanical and morphological characterization of polymer-carbon nanocomposites from functionalized carbon nanotubes [J].

Paiva, MC ;

Zhou, B ;

Fernando, KAS ;

Lin, Y ;

Kennedy, JM ;

Sun, YP .

CARBON, 2004, 42 (14) :2849-2854

← 1 2 3 →