Ulc Robotics, Inc.

Junjun Xin

Baiyang Ren

Qin Lei

An electromagnetic acoustic transducer (EMAT) system for inspecting a part includes an EMAT sensor and a power supply for supplying an output power to the EMAT sensor. The power supply includes a DC/DC converter to boost an input DC voltage into a boosted DC voltage, a DC/AC inverter having Silicon Carbide (SiC) Mosfet power switches to invert the boosted DC voltage into an AC square voltage, and an output filter to filter the AC square voltage into an AC sinusoidal voltage. The AC sinusoidal voltage is the output power from the power supply to the EMAT sensor.

Power supply for electromagnetic acoustic transducer (EMAT) sensors

An electro-magnetic acoustic transducer (EMAT) generates both Lamb waves and shear horizontal (SH) waves or Lamb waves only. In configurations, the EMAT includes first and second coils shifted in alignment relative to one another and a magnet array overlaid over the coils. The EMAT generates a Lamb wave when the first coil is excited with an electrical current and generates a SH wave when the second coil is excited with an electrical current. In other configurations, the EMAT includes a coil and a magnet array which are movable relative to one another between a first position and a second position shifted in alignment relative to one another. The EMAT generates a Lamb wave when the coil is excited with an electrical current while in the first position and generates a SH wave when the coil is excited with an electrical current while in the second position.

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Ronkonkoma, NY, United States of America

Junjun Xin