SEDL / STP / STP1280-EB / STP16210S

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

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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.