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    Development of High-Temperature Strain Gage Wire

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    The use of electrical strain gages at elevated temperatures (for the purposes of the present discussion, defined as those up to a maximum of 1600 F) involves a number of factors not normally present in conventional room temperature applications. Some of the additional considerations occasioned by the increased temperature of operation may be listed as (1) oxidation resistance of the gage material, (2) thermal coefficient of resistivity and expansion, (3) metallurgical stability, and (4) fabricability. In addition to these, an acceptable gage material should possess intrinsic high resistivity, usable strain sensitivity, compatibility with the mounting medium employed and reasonable resistance to the effects of creep and fatigue.

    Author Information:

    Graft, W. H.
    Armour Research Foundation, Chicago, Ill.

    Committee/Subcommittee: E28.14

    DOI: 10.1520/STP45036S