Measurement of micro stress fields in epoxy matrix around a fibre using phase-stepping automated photoelasticity

Fangming Zhao, Simon A. Hayes, Eann A. Patterson, Robert J. Young, Frank R. Jones

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The stress field in an epoxy resin matrix near the broken-end of a glass fibre was measured using a phase-stepping automated polariscope. Fringe order contour maps were obtained continuously in a region of 1.835×1.835 mm using this photoelastic technique. Principal stress difference, at any point in the matrix near the fibre-matrix interface and the fibre-end, could be calculated. The present technology enables continuous fringe contours and the distribution in principal stress difference around a fibre-end with partial debonding or a matrix crack to be obtained. Thus the effects of debonding and a transverse crack, emanating from a fibre-break, on the matrix stresses have been fully described. © 2003 Elsevier Ltd. All rights reserved.
    Original languageEnglish
    Pages (from-to)1783-1787
    Number of pages4
    JournalComposites Science and Technology
    Volume63
    Issue number12
    DOIs
    Publication statusPublished - Sept 2003

    Keywords

    • A. Polymer-matrix composites (PMCs)
    • B. Debonding
    • C. Stress transfer
    • C. Transverse crack
    • Photoelastic analysis

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