Accession Number : ADA547292


Title :   Multifunctional Carbon Nanotube-Based Sensors for Damage Detection and Self Healing in Structural Composites


Descriptive Note : Final rept. 1 Aug 2006-31 Jul 2010


Corporate Author : DELAWARE UNIV NEWARK


Personal Author(s) : Chou, Tsu-Wei ; Thostenson, Erik T


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a547292.pdf


Report Date : 29 Oct 2010


Pagination or Media Count : 27


Abstract : During the past year of the research program focusing on developing composites with damage sensing and self-healing functionalities based on carbon nanotubes, improvements to the state-of-the-art in nanocomposite processing have been made. In order to accommodate the processing of thick-section composites, an alternative approach to the traditional calandering method of carbon nanotube dispersion has been developed. A fiber sizing agent containing multiwalled carbon nanotubes was used in the processing of conductive E-glass fabric composites, which were demonstrated to undergo measurable, non-reversible changes in resistivity during the accumulation of damage under quasi-static loading scenarios. These conductively-modified composites possess the potential to sense damage under fatigue tensile and dynamic compressive and impact loadings. A review article describing the design, processing and resultant mechanical, electrical and thermal properties of nanotube-based composites has been published.


Descriptors :   *CARBON NANOTUBES , *COMPOSITE STRUCTURES , THICKNESS , DETECTION , DAMAGE , STATE OF THE ART , RESISTANCE , STATIC LOADS , ELECTRICAL PROPERTIES , ACCUMULATION , HEALING , SCENARIOS , THERMAL PROPERTIES , COMPOSITE MATERIALS


Subject Categories : Laminates and Composite Materials


Distribution Statement : APPROVED FOR PUBLIC RELEASE