Interfacial self-healing for advanced composites

B. J. Blaiszik, M. Baginska, S. R. White, Nancy R Sottos

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A method is developed for sequestration of healing agent filled microcapsules and catalyst to the reinforcement-matrix interface. Using a custom-built load frame, single glass fiber/epoxy microbond specimens are tested under an optical microscope. The crack front propagation is observed during debonding and subsequent healing events. High healing efficiency, as measured by recovery of interfacial shear strength after full interfacial failure, is demonstrated using encapsulated DCPD monomer and Grubbs catalyst. In addition, the effects of fiber surface functionalization on interfacial friction and interfacial shear strength are investigated. Since microcracking and interfacial failure of reinforcing fibers is one of the key failure mechanisms in composite materials, healing this damage at such an early stage may allow for a substantial increase in expected lifetime by preventing catastrophic growth of smaller flaws.

Original languageEnglish (US)
Title of host publication24th Annual Technical Conference of the American Society for Composites 2009 and 1st Joint Canadian-American Technical Conference on Composites
Pages255-262
Number of pages8
Volume1
StatePublished - 2009
Event24th Annual Technical Conference of the American Society for Composites 2009 and 1st Joint Canadian-American Technical Conference on Composites - Newark, DE, United States
Duration: Sep 15 2009Sep 17 2009

Other

Other24th Annual Technical Conference of the American Society for Composites 2009 and 1st Joint Canadian-American Technical Conference on Composites
CountryUnited States
CityNewark, DE
Period9/15/099/17/09

ASJC Scopus subject areas

  • Ceramics and Composites

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