STP893

    Effect of Impact and Fatigue Loads on the Strength of Graphite/Epoxy Composites

    Published: Jan 1986


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    Abstract

    An extensive experimental investigation on a graphite/epoxy (T300/934) composite laminate having an orientation and a stacking sequence of (±45,0,90)2s was conducted to study the behavior of the composite material subjected to several combinations of low-velocity projectile impact and tension-tension fatigue loads. The sequence of loading (impact/cycle or cycle/impact) was changed to study its effect on the strength or the life of the composite materials. The experimental data in impact tests were compared with the corresponding results obtained by using a theoretical model.

    Keywords:

    composite materials, impact and fatigue studies, residual strength, sequence of loading, failure threshold, critical velocity


    Author Information:

    Avva, VS
    Professor of Mechanical Engineering and graduate research assistantgraduate student, North Carolina A & T State UniversityUniversity of Maryland, GreensboroCollege Park, NCMD

    Vala, JR
    Senior engineer, FMC Corporation, San Jose, CA

    Jeyaseelan, M
    Professor of Mechanical Engineering and graduate research assistantgraduate student, North Carolina A & T State UniversityUniversity of Maryland, GreensboroCollege Park, NCMD


    Paper ID: STP35349S

    Committee/Subcommittee: D30.02

    DOI: 10.1520/STP35349S


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