A New Method of Measuring the Modulus of Elasticity of Material by Analyzing the Relation Between Loading Position and Displacement of a Beam Bent by a Traveling Load

    Volume 15, Issue 2 (March 1987)

    ISSN: 0090-3973

    CODEN: JTEOAD

    Page Count: 9


    Kuroda, T
    Professor, Ritsumeikan University, Kyoto,

    (Received 22 November 1985; accepted 2 September 1986)

    Abstract

    This paper proposes a new bending method using a computer to obtain a modulus of elasticity of plastics close to those given by tension methods. In the new method, a beam is freely supported at its ends on spherical surfaces. A load of constant weight on the beam travels from one support to another, and the displacement of the undersurface of the beam is measured at a certain distance from a support. The modulus of elasticity is obtained so that the (loading) position-displacement (of a point on the beam) curve expressed by the equation of displacement of the beam, which is a function of the modulus, will best fit the experimental displacements.

    An equation is proposed for the displacement with terms including beam deflection and a quantity proportional to load travel, and a method to calculate the modulus from the experimental displacements is given. Finally, the experimental system with the testing machine and the good results of the experiments are shown.


    Paper ID: JTE10990J

    DOI: 10.1520/JTE10990J

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    Author
    Title A New Method of Measuring the Modulus of Elasticity of Material by Analyzing the Relation Between Loading Position and Displacement of a Beam Bent by a Traveling Load
    Symposium , 0000-00-00
    Committee E42