Volume 25, Issue 5 (September 1997)

    Fatigue Testing of Microspecimens from a Weldment

    (Received 6 August 1996; accepted 24 January 1997)

    CODEN: JTEOAD

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    Abstract

    This paper describes a technique for measuring the strain-controlled cyclic stress-strain behavior of microspecimens taken from a steel weldment. The specimens have a cross-section 0.3 by 0.3 mm with a gage section approximately 1.4-mm long and are believed to be the smallest specimens that have ever been tested in fully-reversed axially-loaded fatigue tests. The microsample fatigue test system developed allows both strain and stress control. The key feature is the ability to measure strain directly using a laser-based strain gage that measures the relative displacement between two tiny reflective indentations in the specimen surface.


    Author Information:

    Yuan, B
    The Johns Hopkins Hopkins University, Baltimore, MD

    Sharpe, WN
    The Johns Hopkins Hopkins University, Baltimore, MD


    Stock #: JTE11358J

    ISSN: 0090-3973

    DOI: 10.1520/JTE11358J

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    Author
    Title Fatigue Testing of Microspecimens from a Weldment
    Symposium , 0000-00-00
    Committee E08