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Title:Fracture testing of a self-healing polymer composite
Author(s):Brown, Eric N.; Sottos, Nancy R.; White, Scott R.
Subject(s):smart materials
experimental solid mechanics
materials processing
Abstract:Inspired by biological systems in which damage triggers an autonomic healing response, we have developed a polymer composite materials that can heal itself when cracked. This paper summarizes the self-healing concept for polymeric composite materials and investigates fracture mechanics issues consequential to the development and optimization of this new class of materials. The self-healing material under investigation is an epoxy matrix composite, which incorporates a microencapsulated healing agent that is released upon crack intrusion. Polymerization of the healing agent is triggered by contact with an embedded catalyst. The effects of size and concentration of catalyst and microcapsules on fracture toughness and healing efficiency are investigated. In all cases the addition of microcapsules significantly toughens the neat epoxy. Once healed, the self-healing polymer recovers as much as 90% of its virgin fracture toughness.
Issue Date:2001-11
Publisher:Department of Theoretical and Applied Mechanics (UIUC)
Series/Report:TAM Reports 986
Genre:Technical Report
Publication Status:published or submitted for publication
Peer Reviewed:is peer reviewed
Date Available in IDEALS:2007-03-08
Is Version Of:Published as: Eric N. Brown, Nancy R. Sottos, and Scott R. White. Fracture testing of a self-healing polymer composite. Experimental Mechanics, 42:4, 372-379 (Dec. 2002). DOI: 10.1007/BF02412141. Copyright 2002 Springer Verlag.

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  • Technical Reports - Theoretical and Applied Mechanics (TAM)
    TAM technical reports include manuscripts intended for publication, theses judged to have general interest, notes prepared for short courses, symposia compiled from outstanding undergraduate projects, and reports prepared for research-sponsoring agencies.

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