Measurement of transient crack-tip deformation fields using the method of coherent gradient sensing

Sridhar Krishnaswamy, Hareesh V. Tippur, Ares J. Rosakis*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

50 Scopus citations

Abstract

A shearing interferometric method (CGS) is proposed as a viable alternative to currently used experimental techniques for the study of dynamic crack propagation in both transparent and opaque media. CGS is a full-field optical technique that provides real-time fringes representing crack-tip deformation or stress state. The results of the experiments are interpreted on the basis of the conventional singular asymptotic analysis as well as a newly developed transient higher-order asymptotic analysis. The excellent agreement obtained between the experimental results and the higher-order asymptotic analysis clearly indicates that the contribution of the non-singular terms to the total stress and deformation fields is too important to be ignored.

Original languageEnglish (US)
Pages (from-to)339-372
Number of pages34
JournalJournal of the Mechanics and Physics of Solids
Volume40
Issue number2
DOIs
StatePublished - 1992

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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