Damage in elastomers: Healing of internally nucleated cavities and micro-cracks

Xavier Poulain, Oscar Lopez-Pamies, K. Ravi-Chandar

Research output: Contribution to journalArticle

Abstract

Following on the work of Poulain et al. (Damage in elastomers: Nucleation and growth of cavities, micro-cracks, and macro-cracks, Int. J. Fract., 2017, 205, 1-21), this paper presents an investigation of the response of cavities/cracks internally nucleated within a transparent PDMS elastomer that is confined between two firmly embedded stiff beads and subjected to quasistatic cyclic loading-unloading. Specifically, it is observed that cracks that nucleate and propagate to reach tens of microns in length during the loading can heal completely upon unloading. They do so autonomously within a time scale of seconds. Furthermore, the regions of the elastomer that experience healing appear to acquire higher strength or toughness.

Original languageEnglish (US)
Pages (from-to)4633-4640
Number of pages8
JournalSoft Matter
Volume14
Issue number22
DOIs
StatePublished - 2018

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics

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