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    Developments and Improvements in Methods of Stress-Strain Testing of Rubber

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    At the beginning of the Government rubber program in 1942 and 1943, the methods of stress-strain testing given in A.S.T.M. Methods D 15 — 41 and D 412 — 41 were employed. It was generally recognized at that time that the precision of stress-strain testing of rubber vulcanizates left much to be desired. Consequently, as mentioned in the paper by Mr. Hucks, the Committee on Specifications for Government Synthetic Rubbers, in order to improve the precision of existing methods and to develop better methods, established a Subcommittee on Physical Testing. The name of this subcommittee was changed in 1944 to the Subcommittee on Test Methods and its scope was broadened to include chemical methods, also. The major portion of its efforts, however, continued to be devoted to physical testing. This subcommittee comprises representatives of the Office of Rubber Reserve, the National Bureau of Standards, several rubber goods manufacturers, the synthetic rubber plants, and the Bureau of Ships. This paper deals with the accomplishments in the field of stress-strain testing emanating from the laboratories represented by this group.

    Author Information:

    Schade, J. W.
    Government Evaluation Laboratories, Akron, Ohio

    Roth, F. L.
    National Bureau of Standards, Washington, D. C.,

    Committee/Subcommittee: D11.10

    DOI: 10.1520/STP47886S