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US 7,742,616 B2Granted
Electromagnetic acoustic transducer for generating and measuring bending vibration in rod member using anti-symmetric magnetic field structure
AssigneeSeoul National University Industry Foundation
InventorsYoon Young Kim, Soon Woo Han
Life of this patent
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Abstract
Provided is an electromagnetic acoustic transducer including a main body formed of a non-metal material and having a hollow portion, a magnetic field generation portion generating two magnetic fields parallel to a lengthwise direction of the rod member and in opposite directions to each other, at both sides of the rod member that is inserted in the hollow portion of the main body, and a coil wound around an outer circumferential surface of the main body.
Claims4
An electromagnetic acoustic transducer which can generate and measure a bending vibration in a rod member comprising:
- a main body formed of a non-metal material and having a hollow portion;
- a magnetic field generation portion generating two magnetic fields parallel to a lengthwise direction of the rod member and in opposite directions to each other, at both sides of the rod member that is inserted in the hollow portion of the main body;
- and
- a coil wound around an outer circumferential surface of the main body.
1 more element
Dependencies are inferred from the claim text.