Magnetostrictive type strain sensing means and methods
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United States of America Patent
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Mar 29, 2011
Grant Date -
Jun 11, 2009
app pub date -
Dec 11, 2007
filing date -
Dec 11, 2007
priority date (Note) -
Expired
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Abstract
A strain gauge including: a system including a transmission coil, a magnetostrictive material layer and a receiver coil wherein an alternating transmission signal is applied across the transmission coil and an induced signal is induced in the receiver coil, the intensity of the detected signal across the receiver coil being a measurement of strain, wherein frequency of transmission signal is near to a resonance frequency of the system.
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