In ultrasonic testing, an electronic device used to send a sound wave through the part is called a

In ultrasonic testing, an electronic device used to send a sound wave through the part is called a

• A. Transponder
• B. Transducer
• C. Transformer
• D. Couplant

Answer: (B)

In ultrasonic testing, the device that converts electrical energy into mechanical vibrations to launch the sound wave is the transducer. It uses piezoelectric crystals (or similar mechanisms) that respond to a brief electrical pulse by producing ultrasonic vibrations, sending the wave into the part. It can also receive the returning wave and convert it back into an electrical signal for analysis. The couplant helps transfer energy between the transducer and the part but doesn’t generate the wave. A transformer changes voltage, not acoustic energy, and a transponder is a responder device used in other systems.

In ultrasonic testing, the device that converts electrical energy into mechanical vibrations to launch the sound wave is the transducer. It uses piezoelectric crystals (or similar mechanisms) that respond to a brief electrical pulse by producing ultrasonic vibrations, sending the wave into the part. It can also receive the returning wave and convert it back into an electrical signal for analysis. The couplant helps transfer energy between the transducer and the part but doesn’t generate the wave. A transformer changes voltage, not acoustic energy, and a transponder is a responder device used in other systems.