The use of a coherent gradient sensor in dynamic mixed-mode fracture mechanics experiments

J. J. Mason, J. Lambros, A. J. Rosakis

Research output: Contribution to journalArticle

Abstract

The use of a coherent gradient sensing (CGS) apparatus is explored in dynamic fracture mechanics investigations. The ability of the method to quantify mixed-mode crack tip deformation fields accurately is tested under dynamic loading conditions. The specimen geometry and loading follow that of Lee and Freund who gave the theoretical and numerical mixed-mode K values as a function of lime for the testing conditions. The CGS system's measurements of KI and KII are compared with the predicted results, and good agreement is found. The method is used to measure K beyond the time domain of the known solution; it is seen that a shift from primarily mode II deformation to primarily mode I deformation occurs.

Original languageEnglish (US)
Pages (from-to)641-661
Number of pages21
JournalJournal of the Mechanics and Physics of Solids
Volume40
Issue number3
DOIs
StatePublished - 1992
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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