The Use of Creep Data in Design

    Published: Jan 1950

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    The development of high-speed aircraft has introduced some new design problems. One of the most difficult problems is the designing of structures to operate under high stresses at relatively high temperatures. For applications in which stresses and temperatures are reasonably uniform over long periods of time, tension creep data have been used for design purposes. For many aircraft applications, it is usually more important to design against collapse by buckling than against failure by tension loading. In this case, compression creep data are needed. Very little is known concerning the relation between tension creep and creep in compression, torsion, and under combined stresses. This paper describes the creep data available at the present time and discusses the limitations in interpolation and extrapolation of the data. It is indicated what types of additional data would be of greatest usefulness in the design problems confronting designers in the use of metals for high-temperature service.

    Author Information:

    Cross, Howard C.
    Supervising Metallurgist, Battelle Memorial Inst., Columbus, Ohio

    Jackson, L. R.
    Supervising Metallurgist, Battelle Memorial Inst., Columbus, Ohio

    Committee/Subcommittee: A01.13

    DOI: 10.1520/STP46723S

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