The acoustic transducer can also be comprised of an electromagnetic acoustic device.

The system includes an electrostatic shield (63) to protect the second EMAT (26) from electromagnetic and radio frequency interference.

The electromagnetic acoustic transducer (EMAT) transducer disclosed herein is useful for the non-destructive analysis of objects.

The transducer is at least one of an air-coupled transducer and an electro-magnetic acoustic transducer.

An acoustic wave sensor includes an electromagnetic acoustic transducer to generate a resonant acoustic wave substantially trapped in an acoustic wave cavity.

The invention relates to a method and an apparatus for authenticating solid objects by means of an electromagnetic acoustic transducer technique.

The system includes an electrostatic shield to protect the second EMAT from electromagnetic and radio frequency interference.

An embodiment of the present disclosure provides a non-destructive inspection system comprising a capacitive electromagnetic acoustic transducer and a control unit connected to the capacitive electromagnetic transducer.

An automated system for non-destructive inspection of a weld through the use of ultrasonic waves produced by an electromagnetic acoustic transducer (EMAT).

An electromagnetic acoustic transducer (20) comprising a magnet (28) and a coil (26) is located in the interior space of the socket near the bolt.

An automated method for non-destructive inspection and evaluation of a weld through the use of ultrasonic waves produced by an electromagnetic acoustic transducer (EMAT).

A combined electromagnetic acoustic transducer (EMAT) is disclosed that uses magnetic shielding to increase the efficiency (defined as the received signal per unit of excitation current).

An automated sensor transport system for non-destructive inspection of a weld through the use of ultrasonic waves produced by an electromagnetic acoustic transducer (EMAT).

The acoustic transducer can also be comprised of an electromagnetic acoustic device.

The improvements to the present invention include the use of a source of either electromagnetic or acoustic energy, and electromagnetic or acoustic energy receivers, as appropriate.