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US 12,146,860 B2Granted
Electro-magnetic acoustic transducer (EMAT) having electromagnet array for generating configurable bias magnetic field patterns
AssigneeUlc Technologies, LLC
InventorBaiyang Ren
Life of this patent
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Abstract
An electro-magnetic acoustic transducer (EMAT) system and method for controlling the EMAT system are provided. The system includes an electromagnet array with one or more electromagnets. Each electromagnet includes a magnetic core and a wound coil wrapped around the magnetic core. The electromagnet array generates bias magnetic fields having different patterns when the wound coils are energized differently.
Claims16
An electro-magnetic acoustic transducer (EMAT) system comprising:
- an electromagnet array including two or more electromagnets, each with a magnetic core;
- a power supply connected to a wound coil wrapped around the magnetic core of each electromagnet;
- a first bias magnetic field generated by the electromagnet array when the wound coil is energized with a first current in a first direction from the power supply;
- and
- a second bias magnetic field generated by the electromagnet array when the wound coil is energized with a second current in a second direction opposite the first direction from the power supply.
2 more elements
A method of controlling an electro-magnetic acoustic transducer (EMAT) system comprising:
- energizing a wound coil wrapped around a magnetic core of each of two or more electromagnets of an electromagnet array using a power supply of the EMAT system;
- providing a first current at a first time to the wound coil using the power supply;
- generating a first bias magnetic field based on the first current in the first direction;
- providing a second current in the second direction opposite the first direction at a second time to the wound coil using the power supply;
- and
- generating a second bias magnetic field based on the second current.
3 more elements
Dependencies are inferred from the claim text.