STP1230

    Prediction of Energy Release Rate for Edge Delamination Using a Crack Tip Element Approach

    Published: Jan 1995


      Format Pages Price  
    PDF (356K) 21 $25   ADD TO CART
    Complete Source PDF (11M) 21 $139   ADD TO CART


    Abstract

    Edge delamination in composite laminates is analyzed using a closed form, crack tip element approach. Classical laminated plate theory is utilized for the crack tip element formulation. Energy release rates and fracture mode ratios as found by this new approach are shown to agree with finite element results for mechanical, hygrothermal, and combined loadings. For those cases where a linear elastic solution predicts a near-field oscillatory singularity, a relatively simple method is proposed that allows a unique value of fracture mode ratio to be defined.

    Keywords:

    composite materials, edge delamination, energy release rate, crack tip element, fracture, graphite/epoxy


    Author Information:

    Davidson, BD
    Associate professor, Syracuse University, Syracuse, NY


    Paper ID: STP14013S

    Committee/Subcommittee: D30.06

    DOI: 10.1520/STP14013S


    CrossRef ASTM International is a member of CrossRef.