公开(公告)号：US20240125742A1

公开(公告)日：2024-04-18

申请号：US17965574

申请日：2022-10-13

Applicant: Innerspec Technologies, Inc.

Inventor： Borja Lopez Jauregui ,  Dileep Koodalil ,  Alvaro Pallares ,  Syed Ali

IPC: G01N29/24 ,  G01N29/04 ,  G01N29/07 ,  G01N29/44 ,  G01N29/46

CPC classification number: G01N29/2412 ,  G01N29/041 ,  G01N29/043 ,  G01N29/07 ,  G01N29/4472 ,  G01N29/46 ,  G01N2291/0289 ,  G01N2291/0422 ,  G01N2291/0425 ,  G01N2291/0427

Abstract: A system and method for sizing defects in solid structures using guided waves. The system includes a magnetostrictive-strip EMAT transducer comprising at least one biasing static magnetic field, at least one RF coil for fixed-wavelength measurements, at least one RF coil for variable-wavelength measurements, and a strip of highly magnetostrictive material that is coupled with the structure. The fixed-wavelength RF coil permits obtaining measurements of amplitude and frequency content of signals reflected and/or attenuated when traveling through the structure which are used to estimate the size and geometry of any defects in this structure. The variable-wavelength RF coil permits recording the frequencies that are cut off or pass through the structure to also estimate the size of any defects in the structure. The fixed-wavelength sizing and geometry assessment is used to determine whether the variable-wavelength estimate is valid. The final assessment is based on the fixed-wavelength estimate, the variable-wavelength estimate, or a combination of both.

公开(公告)号：US11123766B2

公开(公告)日：2021-09-21

申请号：US16415701

申请日：2019-05-17

Applicant: Innerspec Technologies, Inc.

Inventor： Stephen William Smith ,  Philip Haywood Cox

IPC: B06B1/02 ,  B06B1/04 ,  H02M7/538 ,  G01N29/24

Abstract: A high-voltage pulser circuit for Electromagnetic Acoustic Transducer (EMAT) coils using a Capacitive Discharge push-pull converter. The present invention relates in particular to the operation of the converter into an Electromagnetic Acoustic Transducer (EMAT) differential coil. The present invention reduces ringing of the coil current resulting in a smaller blind zone and a well-defined broadband ultrasonic wave from the coil. The pulser can be used to generate one or more cycles and work in either pulse-echo (same transmitter and receiver) or pitch-catch (different transmitter and receiver).