Fatigue Crack Spacing in the Matrix of a Continuous Fiber SCS-6/Ti Composite

    Volume 15, Issue 3 (September 1993)

    ISSN: 0884-6804

    CODEN: CTROAD

    Page Count: 7


    Hillberry, BM
    Professor, Purdue University, West Lafayette, IN

    Johnson, WS
    Senior scientist, NASA Langley Research Center, Hampton, VA

    Abstract

    In this study the extensive matrix fatigue cracking that has been observed in notched SCS-6/Ti-15-3 composites is investigated. Away from the notch a uniform spacing of the fatigue cracks develop. Closer to the notch, fiber-matrix debonding occurs, increasing distance between the cracks. Crack spacing predicted from cylinder models compare favorably with experimental observations. SEM fractography showed that the principal fatigue crack initiation occurred around the 0° fibers. Primary fatigue cracking does not appear to be due to interface failure in the 90° plies.


    Paper ID: CTR10372J

    DOI: 10.1520/CTR10372J

    ASTM International is a member of CrossRef.

    Author
    Title Fatigue Crack Spacing in the Matrix of a Continuous Fiber SCS-6/Ti Composite
    Symposium , 0000-00-00
    Committee D30