Application of high-temperature superconducting wires to magnetostrictive transducers for underwater sonar

Journal Article · Fri Jul 01 04:00:00 EDT 1994 · IEEE Transactions on Magnetics

DOI:https://doi.org/10.1109/20.305582· OSTI ID:49643

Voccio, J P; Joshi, C H ^[1]; Lindberg, J F ^[2]

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1. American Superconductor Corp., Westborough, MA (United States)
2. Naval Undersea Warfare Center, New London, CT (United States)

Recently discovered cryogenic magnetostrictive materials show maximum strains greater than any room temperature materials. These cryogenic magnetostrictors can be combined with high-temperature superconducting (HTS) coils to create a sonar transducer with high efficiency and high acoustic power density. A prototype low-frequency (< 1,000 Hz) magnetostrictive transducer is described. This transducer uses a terbium-dysprosium (TbDy) magnetostrictor rod with HTS coils cooled to 50--80 K using a single-stage cryocooler. The device is designed for operation at water depths of 100 m and is believed to be the first fully integrated prototype demonstration of HTS.

• OSTI ID: 49643
• Report Number(s): CONF-930926--
• Journal Information: IEEE Transactions on Magnetics, Journal Name: IEEE Transactions on Magnetics Journal Issue: 4Pt2 Vol. 30; ISSN IEMGAQ; ISSN 0018-9464
• Country of Publication: United States
• Language: English

Related Subjects

44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
66 PHYSICS
DESIGN
HIGH-TC SUPERCONDUCTORS
SONAR
SUPERCONDUCTING COILS
SUPERCONDUCTING DEVICES
SUPERCONDUCTING WIRES
TRANSDUCERS