Difference between revisions of "Dictionary:Magnetostriction"

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(mag n&#x0113;, t&#x014D; strik&#x2019; sh&#x2202;n) Change in the strain of a magnetic material as a result of changes in magnetization. The dependence of magnetization (susceptibility or remanence) on applied stress is termed <b>inverse magnetostriction</b> or <b>piezomagnetism</b>. Magnetostrictive acoustical sources and hydrophones are extremely rugged. A magnetostrictive hydrophone might consist of a coil of wire wrapped around a cylinder of magnetostrictive material. A pressure wave acting radially induces hoop-stresses in the core that changes its permeability and thereby the flux linking the coil wrapped around it. The change of flux induces a voltage that is proportional to the derivative of the pressure-wave signal.
 
(mag n&#x0113;, t&#x014D; strik&#x2019; sh&#x2202;n) Change in the strain of a magnetic material as a result of changes in magnetization. The dependence of magnetization (susceptibility or remanence) on applied stress is termed <b>inverse magnetostriction</b> or <b>piezomagnetism</b>. Magnetostrictive acoustical sources and hydrophones are extremely rugged. A magnetostrictive hydrophone might consist of a coil of wire wrapped around a cylinder of magnetostrictive material. A pressure wave acting radially induces hoop-stresses in the core that changes its permeability and thereby the flux linking the coil wrapped around it. The change of flux induces a voltage that is proportional to the derivative of the pressure-wave signal.
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Revision as of 21:17, 9 March 2017

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(mag nē, tō strik’ sh∂n) Change in the strain of a magnetic material as a result of changes in magnetization. The dependence of magnetization (susceptibility or remanence) on applied stress is termed inverse magnetostriction or piezomagnetism. Magnetostrictive acoustical sources and hydrophones are extremely rugged. A magnetostrictive hydrophone might consist of a coil of wire wrapped around a cylinder of magnetostrictive material. A pressure wave acting radially induces hoop-stresses in the core that changes its permeability and thereby the flux linking the coil wrapped around it. The change of flux induces a voltage that is proportional to the derivative of the pressure-wave signal.