Effects of Removing and Replacing an 8-MM Charpy Striker on Absorbed Energy

    Volume 2, Issue 8 (September 2005)

    ISSN: 1546-962X

    CODEN: JAIOAD

    Published Online: 22 June 2005

    Page Count: 4


    Vigliotti, DP
    Vice-President, Chavez Calibrations International, Erie, CO

    Vigliotti, JL
    Vice-President, Chavez Calibrations International, Erie, CO

    (Received 8 October 2004; accepted 22 February 2005)

    Abstract

    It has been thought that removing and replacing an in-tolerance 8-mm striker may affect the results of a Charpy test. This thought brought about a requirement in Standard Test Method E23 [1] that states that if a striker is removed and replaced on a Charpy machine, the indirect verification is void and a new verification test must be performed. Groups of NIST SRM 2092 and SRM 2096 specimens were tested on machines with three different striker-mounting designs. The specimens were tested with the striker removed and replaced between groups. The results of these tests support a change in the standard that can make removing and replacing the striker acceptable without performing a new indirect verification test.


    Paper ID: JAI12875

    DOI: 10.1520/JAI12875

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    Author
    Title Effects of Removing and Replacing an 8-MM Charpy Striker on Absorbed Energy
    Symposium Pendulum Impact Machines: Procedures and Specimens, 2004-11-08
    Committee E28