Accession Number : ADA622994


Title :   Magnetoelectric Energy Harvesting


Descriptive Note : Patent application, Filed 20 November 2014


Corporate Author : NAVAL UNDERSEA WARFARE CENTER DIV NEWPORT RI


Personal Author(s) : Finkel, Peter


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a622994.pdf


Report Date : 20 Nov 2014


Pagination or Media Count : 23


Abstract : An energy harvesting device for harvesting energy from a moving structure includes a housing allowing transmission of magnetic fields therethrough. A piezoelectric material capable of a phase transition and a magnetostrictive material capable of a structural change when subjected to a magnetic field are mechanically coupled to each other in the housing. An adjustable pre-stress means is positioned between the housing and the combination of the piezoelectric and magnetostrictive materials. Electrical contacts are positioned on the piezoelectric material. A magnet is mounted on the moving structure. The housing is mounted in sufficient proximity to the magnet for the magnetic field of the magnet to induce the structural change in the magnetostrictive material.


Descriptors :   *ELECTROMECHANICAL DEVICES , *ENERGY HARVESTING , COUPLING(INTERACTION) , ELECTRIC CONTACTS , ELECTRICAL PROPERTIES , MAGNETIC FIELDS , MAGNETIC PROPERTIES , MAGNETOSTRICTION , MODIFICATION , MOUNTS , PATENT APPLICATIONS , PHASE TRANSFORMATIONS , PIEZOELECTRIC MATERIALS , SINGLE CRYSTALS , STRUCTURAL PROPERTIES , TRANSMITTANCE


Subject Categories : Non-electrical Energy Conversion
      Electricity and Magnetism


Distribution Statement : APPROVED FOR PUBLIC RELEASE