Volume 3, Issue 2 (February 2006)

    International Comparison of Impact Reference Materials (2004)

    (Received 21 December 2004; accepted 21 October 2005)

    Published Online: 2006


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    A three-year horizontal comparison has been completed between national laboratories that certify specimens for the indirect verification of Charpy impact test machines. The participants in this study were the Institute for Reference Materials and Measurements of the European Commission, the National Metrology Institute of Japan (NMIJ), the National Institute of Standards and Technology in the United States, and the Laboratoire National d'Essais in France. The comparison was conducted to evaluate the impact of reference specimens over a three-year period. Sets of certified reference specimens, at low (15 J), medium (30 J), and high energy (100 J) levels were produced and distributed at the start of the study. Specimens were tested approximately every six months on each of the machines in the study. The results of the testing are presented and the stability of the various impact machines and specimens are discussed.

    Author Information:

    McCowan, C
    Materials Research Engineer, NIST, Materials Reliability Division, Boulder, CO

    Roebben, G
    IRMM, Reference Materials Unit, EC-JRC-IRMM, Geel,

    Yamaguchi, Y
    NMIJ, Mass and Force Standard Section, AIST Tsukuba Central 3, Ibarki,

    Lefrançois, S
    LNE, Mechanical and Equipment Testing, LNE, Trappes Cedex,

    Splett, J
    Mathematical Statistician, Statistical Engineering Division, NIST, Boulder, CO

    Takagi, S
    NMIJ, Vibration and Hardness Section, AIST Tsukuba Central 3, Ibaraki,

    Lamberty, A
    IRMM, Reference Materials Unit, EC-JRC-IRMM, Geel,

    Stock #: JAI12869

    ISSN: 1546-962X

    DOI: 10.1520/JAI12869

    ASTM International is a member of CrossRef.

    Title International Comparison of Impact Reference Materials (2004)
    Symposium Pendulum Impact Machines: Procedures and Specimens, 2004-11-08
    Committee E28