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Proceedings Paper

Enhanced health monitoring of fibrous composites with aligned carbon nanotube networks and electrical impedance tomography
Author(s): T. Tallman; F. Semperlotti; K. W. Wang
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Paper Abstract

The high strength to weight ratio of fibrous composites such as glass-fiber reinforced polymers (GFRP) makes them prominent structural materials. However, their laminar nature is susceptible to delamination failure the onset of which traditional structural health monitoring (SHM) techniques cannot reliably and accurately detect. Carbon nano-tubes (CNT) have been recently used to tailor the electrical conductivity of polymer based materials that otherwise behave as insulators. The occurrence of damage in the polymer matrix produces localized changes in conductivity which can be tracked using electrical impedance tomography (EIT). This paper explores combining advances in composite manufacturing with EIT to develop a SHM technique that exploits anisotropic conductance monitoring for enhanced delamination and matrix crack detection.

Paper Details

Date Published: 18 April 2012
PDF: 7 pages
Proc. SPIE 8348, Health Monitoring of Structural and Biological Systems 2012, 83480G (18 April 2012); doi: 10.1117/12.914461
Show Author Affiliations
T. Tallman, Univ. of Michigan (United States)
F. Semperlotti, Univ. of Notre Dame (United States)
K. W. Wang, Univ. of Michigan (United States)

Published in SPIE Proceedings Vol. 8348:
Health Monitoring of Structural and Biological Systems 2012
Tribikram Kundu, Editor(s)

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