Acoustical Properties of Magnetostrictive and Metallic Materials for Naval Applications.
Final rept. 15 Oct 70-14 Oct 71,
INTERAND CORP ROCKVILLE MD
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The complex interaction of creep and fatigue in nickel and iron specimens was investigated through the combined application of static and high frequency vibratory stress. The development of a novel measuring technique, which utilizes Barkhausen noise as a probe to monitor changes in the microstructure of metals under dynamic conditions, provided the first real time observations of vibratory annealing, high frequency, work hardening, and plastic flow. Author
- Metallurgy and Metallography
- Test Facilities, Equipment and Methods