PDMS-Glass interface adhesion energy determined via comprehensive solutions for thin film bulge/blister tests

Aarash Sofla, Erkin Seker, James P. Landers, Matthew R. Begley

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

This paper provides comprehensive relationships for pressure, deflection, energy release rate, and phase angle for bulge testing, which are valid for all combinations of the testing length-scales (film thickness, debond size, and bulge height) and materials. These solutions can be used to design experiments that vary relative contributions of opening and sliding displacements at the crack tip by modulating the film thickness, debond size, and bulge volume. Their closed-form nature greatly facilitates property extraction via regression, e.g., modulus from experimental pressure/deflection data or interface toughness from debond size/injected volume data. This is illustrated using experiments to quantify the interfacial adhesion energy between an initially dry polydimethylsiloxane-glass interface via bulge testing under controlled volume injection. The results indicate that the mode-mixity has no effect on the energy required for debonding, which suggests that wetting of the crack faces behind the debonding front eliminates friction.

Original languageEnglish (US)
Pages (from-to)1-5
Number of pages5
JournalJournal of Applied Mechanics, Transactions ASME
Volume77
Issue number3
DOIs
StatePublished - Aug 10 2010
Externally publishedYes

Keywords

  • Bulge testing
  • Interface adhesion
  • Mode-mixity
  • PDMS

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Condensed Matter Physics

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