Acoustical Properties of Magnetostrictive and Metallic Materials for Naval Applications

摘要

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)