Analysis of damping characteristics of a viscoelastic polymer filled with randomly oriented single-wall nanotube ropes

Ailin Liu; Kon-Wei Wang; Charles E. Bakis; Jin H. Huang

doi:10.1117/12.658586

16 March 2006 Analysis of damping characteristics of a viscoelastic polymer filled with randomly oriented single-wall nanotube ropes

Ailin Liu, Kon-Wei Wang, Charles E. Bakis, Jin H. Huang

Author Affiliations +

Proceedings Volume 6169, Smart Structures and Materials 2006: Damping and Isolation; 616911 (2006) https://doi.org/10.1117/12.658586
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2006, San Diego, California, United States

Abstract

This paper presents an analysis on the structural damping characteristics of polymeric composites containing dilute, randomly oriented nanoropes. The SWNT (single-wall nanotube) rope is modeled as a closed-packed lattice consisting of seven nanotubes in hexagonal array. The resin is described as a viscoelastic material using two models: Maxwell model and three-element standard solid model. The composite is modeled as a three-phase system consisting of a resin, a resin sheath acting as a shear transfer zone, and SWNT ropes. The "stick-slip" mechanism is proposed to describe the load transfer behavior between a nanorope and a sheath and between individual SWNTs. The analytical results indicate that the loss factor of the composite is sensitive to stress magnitude. It is illustrated that the "stick-slip" friction is the main contribution for the total loss factor of CNT-based composites even with a small amount of nanotubes/ropes.

Citation Download Citation

Ailin Liu, Kon-Wei Wang, Charles E. Bakis, and Jin H. Huang "Analysis of damping characteristics of a viscoelastic polymer filled with randomly oriented single-wall nanotube ropes", Proc. SPIE 6169, Smart Structures and Materials 2006: Damping and Isolation, 616911 (16 March 2006); https://doi.org/10.1117/12.658586

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