NASA NTRS · 19780002145
Application of a flight-line disk crack detector to a small engine
Abstract
A disk crack detector was developed and applied to a small military engine for use as a flight-line turbine crack monitor. The system consists of an eddy current type sensor and its cables within the engine, external connecting cables, and a remotely located electrical capacitance-conductance bridge and signal analyzer. As the turbine spins, the rotor is monitored by the sensor for radial surface cracks emanating from the interblade region of the rotor.
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Barranger, J. P.. 1977-03-01. Application of a flight-line disk crack detector to a small engine. https://ntrs.nasa.gov/citations/19780002145
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