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Proceedings Paper

Autonomous sensing of composites with carbon nanotubes for structural health monitoring
Author(s): Yingtao Liu; Masoud Yekani Fard; Abhishek Rajadas; Aditi Chattopadhyay
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Paper Abstract

The development of structural health monitoring techniques leads to the integration of sensing capability within engineering structures. This study investigates the application of multi walled carbon nanotubes in polymer matrix composites for autonomous damage detection through changes in electrical resistance. The autonomous sensing capabilities of fiber reinforced nanocomposites are studied under multiple loading conditions including tension loads. Single-lap joints with different joint lengths are tested. Acoustic emission sensing is used to validate the matrix crack propagation. A digital image correlation system is used to measure the shear strain field of the joint area. The joints with 1.5 inch length have better autonomous sensing capabilities than those with 0.5 inch length. The autonomous sensing capabilities of nanocomposites are found to be sensitive to crack propagation and can revolutionize the research on composite structural health management in the near future.

Paper Details

Date Published: 28 March 2012
PDF: 9 pages
Proc. SPIE 8342, Behavior and Mechanics of Multifunctional Materials and Composites 2012, 83421H (28 March 2012); doi: 10.1117/12.915467
Show Author Affiliations
Yingtao Liu, Arizona State Univ. (United States)
Masoud Yekani Fard, Arizona State Univ. (United States)
Abhishek Rajadas, McClintock High School (United States)
Aditi Chattopadhyay, Arizona State Univ. (United States)

Published in SPIE Proceedings Vol. 8342:
Behavior and Mechanics of Multifunctional Materials and Composites 2012
Nakhiah C. Goulbourne; Zoubeida Ounaies, Editor(s)

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