scholarly journals Effect of the structure and morphology of carbon nanotubes on the vibration damping characteristics of polymer-based composites

2020 ◽  
Vol 2 (3) ◽  
pp. 1228-1235 ◽  
Author(s):  
Anand Joy ◽  
Susy Varughese ◽  
Anand K. Kanjarla ◽  
Sankaran S. ◽  
Prathap Haridoss
Keyword(s):  
Carbon Nanotubes ◽  
Arc Discharge ◽  
Vibration Damping ◽  
Structure And Morphology ◽  
Damping Characteristics ◽  
Structure Of Carbon Nanotubes

The structure of carbon nanotubes synthesized by the arc discharge technique is favorable for inner tube oscillation. The observed dissipation in energy has its origins in the interaction between atoms that constitute the inner and outer tubes.

Viscoelastic material damping characteristics of carbon nanotubes based functionally graded composite shell structures

2018 ◽  
Vol 233 (8) ◽  
pp. 1510-1541 ◽  
Author(s):  
Ashirbad Swain ◽  
Tarapada Roy
Keyword(s):  
Carbon Nanotubes ◽  
Polymer Matrix ◽  
Composite Shell ◽  
Volume Fraction ◽  
Vibration Damping ◽  
Functionally Graded ◽  
Element Formulation ◽  
Damping Characteristics ◽  
Stress Resultant ◽  
Viscoelastic Modeling

This work deals with the study of viscoelastic modeling and vibration analysis of functionally graded nanocomposite shell panels where carbon nanotubes are reinforced in the polymer matrix based on the functionally graded distributions of carbon nanotubes. Five types of grading of carbon nanotubes (such as UD, FGX, FGV, FGO, and FGΛ) in the thickness directions have been considered in order to investigate the vibration damping performance of such composite shell panels. A detailed mathematical formulation for the determination viscoelastic properties is presented. The Mori–Tanaka micromechanics in conjunction with weak interface theory has been developed for the mathematical formulations of the viscoelastic modeling of carbon nanotubes based polymer matrix phase. An eight-noded shell element with five degrees-of-freedom per node has been formulated to study the vibration damping characteristics of various panels made by such functionally graded nanocomposite materials. The shell finite element formulation is based on the transverse shear effects as per the Mindlin’s hypothesis, and stress resultant-type Koiter’s shell theory. Impulse and frequency responses of such structures have been performed to study the effects of various important parameters (such as volume fraction of carbon nanotubes, interfacial condition, agglomeration, temperature, geometries of shell panel) on the dynamic responses. Obtained results demonstrate that quick vibration mitigation may be possible using such carbon nanotubes based proposed composite materials.

Multifunctional Nanocomposites With High Damping Performance for Aerospace Structures

2009 ◽  
Author(s):  
F. Liang ◽  
Y. Tang ◽  
J. Gou ◽  
H. C. Gu ◽  
G. Song
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanofibers ◽  
Polymer Matrix ◽  
Composite Laminates ◽  
Polymer Matrix Composites ◽  
Damping Ratio ◽  
Basalt Fiber ◽  
Specific Area ◽  
Vibration Damping ◽  
Damping Characteristics

Polymer matrix composites with reinforcement of carbon nanofibers and carbon nanotubes in the form of paper sheet have shown significant vibration damping improvement compared to pure matrix materials. The large specific area (1000 m2/g) and aspect ratio (>1000) of carbon nanotubes and nanofibers promote significant interfacial friction between carbon nanotubes/nanofibers and a polymer matrix, which causes much higher energy dissipation in the polymer matrix. In this study, a unique concept of manufacturing nanocomposites with carbon nanotube/nanofiber based nanopaper sheets for vibration damping applications has been explored. The new approach includes making carbon nanopaper sheet by the filtration of well-dispersed carbon nanotubes and carbon nanofibers under controlled processing conditions. Subsequently, carbon nanopaper sheets are integrated into composite laminates as surface layer using the vacuum assistant resin transfer molding (VARTM) process. To compare the damping property of laminates constituted by different fibers, three kinds of fibers, including glass fiber, basalt fiber, and carbon fiber are used. For the comparative study, the vibration damping ratios of samples with and without carbon nanopaper sheets are determined. To identify the damping characteristics of each specimen, the Frequency Response Function (FRF) was estimated by a pair of piezoceramic patches: one as an actuator to excite the specimen and the other as a sensor to detect the induced vibrations. From the FRF, the damping ratio of the specimen at each modal frequency of interest was calculated. The experimental results clearly show a significant improvement of vibration damping properties of the nanocomposites plates. This research demonstrates vibration damping enhancement of a polymer matrix via incorporation of carbon nanopaper sheets and provided basic understanding of the damping characteristics for the optimal design and fabrication of high performance damping composites, which have the potential to be used as structural components for different applications.

Synthesis of single-walled carbon nanotubes by an arc-discharge method using selenium as a promoter

Carbon ◽  
2011 ◽  
Vol 49 (14) ◽  
pp. 4792-4800 ◽  
Author(s):  
Liping Huang ◽  
Bin Wu ◽  
Jianyi Chen ◽  
Yunzhou Xue ◽  
Yunqi Liu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Arc Discharge ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes ◽  
Discharge Method

Efficient lithium storage from modified vertically aligned carbon nanotubes with open-ends

RSC Advances ◽  
2015 ◽  
Vol 5 (84) ◽  
pp. 68875-68880 ◽  
Author(s):  
Hyun Young Jung ◽  
Sanghyun Hong ◽  
Ami Yu ◽  
Sung Mi Jung ◽  
Sun Kyoung Jeoung ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
Lithium Ion ◽  
Lithium Storage ◽  
Vertically Aligned Carbon Nanotubes ◽  
Structure And Morphology ◽  
Aligned Carbon Nanotubes ◽  
Vertically Aligned ◽  
Controlled Structure

Herein, we report the use of vertically aligned carbon nanotubes (VA-CNTs) with controlled structure and morphology as an anode material for lithium-ion batteries.

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