Detection of Delamination Onset in a Composite Laminate Using Moiré Interferometry

    Volume 7, Issue 4 (December 1985)

    ISSN: 0884-6804

    CODEN: CTROAD

    Page Count: 8


    Wood, JD
    Graduate student, Virginia Polytechnic Institute and State University, Blacksburg, VA

    Abstract

    Moiré interferometry was used to detect and measure delaminations in a graphite-epoxy composite laminate. The laminate used was a [(±30)2/¯9¯0]s layup. A uniform strain was subtracted from the full-field moiré pattern by changing the frequency of the reference grating. This technique accentuated the nonuniform strains allowing very high resolution measurements of strain concentrations. These strain concentrations include free-edge effects, resin rich regions and delaminations.


    Paper ID: CTR10308J

    DOI: 10.1520/CTR10308J

    ASTM International is a member of CrossRef.

    Author
    Title Detection of Delamination Onset in a Composite Laminate Using Moiré Interferometry
    Symposium , 0000-00-00
    Committee D30