STP1280: Testing Facilities for Multiaxial Loading of Tubular Specimens

    Ellyin, F
    Professor and graduate research assistant, University of Alberta, Edmonton, Alberta

    Wolodko, JD
    Professor and graduate research assistant, University of Alberta, Edmonton, Alberta

    Pages: 18    Published: Jan 1997


    Abstract

    The development of a new multiaxial testing machine is presented. The testing machine is capable of applying axial load, differential pressure, and torsion to a tubular specimen under independent servohydraulic control. Relative merits of various loading configurations are described. Stress/strain controlled, monotonic/cyclic, and in-phase/out-of-phase (nonproportional) tests under ambient temperature conditions can be performed with this system. The associated computer control hardware and software allows for a number of complex user-defined loading and acquisition schemes. Monotonic and cyclic tests on tubular specimens made of glassfiber-reinforced epoxy with fiber orientations of ±45° and 0°, are presented. Details of the experimental apparatus and representative test results are discussed in this paper.

    Keywords:

    multiaxial fatigue, biaxial fatigue, experimental methods, tubular specimens, composite materials, fatigue (materials) fracture (materials), testing, deformation (materials)


    Paper ID: STP16210S

    Committee/Subcommittee: E08.03

    DOI: 10.1520/STP16210S


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