Maryland's Defense Patent Database

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Optimized galfenol-type magnetostrictive actuator

Patent image
NSWCCD

An apparatus and a method for optimizing a Galfenol-type magnetostriction actuator. The method and apparatus includes an elongated Galfenol-type magnetostrictive bar, first coil and a second coil, orthogonal to the first coil, with the coils arranged and activated to optimize expansion and contraction in the bar. According to the apparatus and the method, the first coil pre-aligns the magnetic moments of the bar into a desired crystallographic orientation that allows for maximum expansion or contraction when under the influence of the magnetic field of the second coil.

Inventors: 
Teter, Joseph P.
Patent Number: 
Technical domain: 
Materials and Coatings
FIle Date: 
2012-09-26
Grant Date: 
2014-09-02
Grant time: 
706 days
Grant time percentile rank: 
12
Claim count percentile rank: 
2
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US NAVY