STP1110: Delamination Analysis of Tapered Laminated Composites Under Tensile Loading

    Armanios, EA
    Assistant professor and NATO scholar, Georgia Institute of Technology, Atlanta, GA

    Parnas, L
    Assistant professor and NATO scholar, Georgia Institute of Technology, Atlanta, GA

    Pages: 19    Published: Jan 1991


    Abstract

    A study was conducted to analyze tapered composite laminates under tensile loading. A tapered construction made of S2/SP250 glass/epoxy laminate was used to achieve a thickness reduction using three consecutive dropped plies over a distance of 60 ply thicknesses. The principle of minimum complementary potential energy was used to determine interlaminar stresses. The interlaminar peel stress distribution shows a higher tensile intensity at the taper/thin portion juncture. The total strain energy release rate is determined using a simplified membrane model. Results are compared with a finite element simulation.

    Keywords:

    fiber-reinforced composite materials, strain energy release rate, delamination, fracture mechanics, fatigue (materials), fracture, composite materials


    Paper ID: STP17726S

    Committee/Subcommittee: D30.06

    DOI: 10.1520/STP17726S


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