Nanotube-based sensing skins for crack detection and impact monitoring of structures

K. J. Loh, T. C. Hou, J. R. Lynch, N. A. Kotov

研究成果: Conference contribution

21 引文 斯高帕斯(Scopus)

摘要

Structural health monitoring (SHM) entails the use of structural response data to identify the existence, location, and severity of structural damage. However, damage detection is a challenging problem because damage is a local phenomenon difficult to observe using global measures of structural response. With the existence and location of damage unknown a priori, sensor strategies monitoring the structure at the component-level would require dense arrays of sensors. Alternatively, this study proposes a sensing skin that can be applied to structural surfaces to monitor the strain response of the structure and the evolution of cracks. A multilayered single wall carbon nanotube-polyelectrolyte composite thin film is proposed as a sensing skin because it is piezoresistive and can be adsorbed to metallic surfaces. Electrical impedance tomography (E1T) is used to reconstruct the distribution of the sensing skin conductivity using voltage measurements taken on the boundary of the skin when regulated electrical currents are applied. The method is capable of imaging cracks in cementitious elements in addition to impact damage in aluminum plates.

原文English
主出版物標題Structural Health Monitoring 2007
主出版物子標題Quantification, Validation, and Implementation - Proceedings of the 6th International Workshop on Structural Health Monitoring, IWSHM 2007
編輯Fu-Kuo Chang
發行者DEStech Publications
頁面1685-1692
頁數8
ISBN(電子)9781932078718
出版狀態Published - 2007
事件6th International Workshop on Structural Health Monitoring: Quantification, Validation, and Implementation, IWSHM 2007 - Stanford, United States
持續時間: 2007 九月 112007 九月 13

出版系列

名字Structural Health Monitoring 2007: Quantification, Validation, and Implementation - Proceedings of the 6th International Workshop on Structural Health Monitoring, IWSHM 2007
2

Other

Other6th International Workshop on Structural Health Monitoring: Quantification, Validation, and Implementation, IWSHM 2007
國家/地區United States
城市Stanford
期間07-09-1107-09-13

All Science Journal Classification (ASJC) codes

  • 電腦科學應用
  • 健康資訊管理

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