A Nonlinear Design Technique for High Power Magnetostrictors.
Abstract
A technique is described for designing magnetostrictors at high power levels. The technique involves the measurement of the complex transformation ratio, and accounts for the nonlinear conditions the material is likely to encounter in practice. The design technique is used to design a bar magnetostrictor resonating at 24.8 kHZ in the fundamental length mode. The sound output is predicted to an accuracy greater than 15% at induction swings as large as one third of saturation. The skewed shapes of resonance curves can be predicted. A novel feature of the experiments is the use of a piezoelectric transducer (dummy load) to backdrive the magnetostrictor to vary the strain independently. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1968
- Accession Number
- AD0846085
Entities
People
- Roy R. Whymark