NASA NTRS · 19660000177
Fatigue cracks detected and measured without test interruption
Abstract
Ultrasonic flaw detector records cracks in materials undergoing fatigue tests, without interfering with test progress. The detector contains modified transducers clamped to the specimens, and an oscillograph readout.
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Freche, J. C., Klima, S. J., Lesco, D. J.. 1966-05-01. Fatigue cracks detected and measured without test interruption. https://ntrs.nasa.gov/citations/19660000177
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