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    Development and Application of High-Temperature Strain Gages for Stress Measurements in Jet Engines

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    This paper covers recent advancements in the development and application of high-temperature strain gages for stress measurements in jet engines. Development of high-temperature strain gages can be divided into three areas: (1) alloys, (2) cements, and (3) fabrication and application techniques. In the Aircraft Gas Turbine Division, the measurement of vibratory stress and static stress are both of primary importance. For vibratory stress measurement, a high-temperature strain gage has been developed which will operate at temperatures up to 1500 F continuously and up to 1800 F for short periods of time. For static stress measurement, a self-temperature — compensating, high — temperature strain gage has been developed for application on specific alloys up to 850 F. Developments to increase the temperature range of both of these gages are under way.

    Author Information:

    Anderson, B. R.
    Aircraft Gas Turbine Division, General Electric Co., Evendale, Ohio.

    Committee/Subcommittee: E28.14

    DOI: 10.1520/STP45049S