Ultrasonic generator/monitor, appropriate for lab and field use, is used to measure ultrasonic parameters and determine certain physical properties of test region. Reflection-oscillator ultrasonic spectrometer is sensitive, inexpensive, has no duty-cycle effects, is simple in construction and use, and for resonance measurements, takes advantage of sensitivity enhancement, and has high frequency stability.
Rous system
NASA Tech Briefs ; 1 , 2
01.08.1976
Sonstige
Keine Angabe
Englisch
NTRS | 1976
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