Piezo Power Ultrasonics | The History. The Mystery. The Science.

Rob's presentation explores the amazing world of Power Ultrasonics. He covers the history, the mystery, and the all-important science that make these tiny ultrasonic engines such a valuable technology used in a wide range of applications, including;
• Sonar
• Flow metering
• Underwater communications
• Ultrasonic drills
• Ultrasonic cleaners
• Friction welding of both plastics and metals
• Cutting blades
• Dental scalers
• Fluid atomization
Chapters
0:00 Intro
0:15 Applications
0:42 Beginning of ultrasonics - Curie Brothers
1:43 Paul Langevin
2:44 Langevin's Sonar Device
5:00 The Langevin Transducer
7:32 Ultrasonic Engine
9:43 Ultrasonic Horn Transmission
13:34 Langevin Transducer Applications
17:55 The Tonpilz Transmission
21:28 Tonpilz Horn Applications
21:50 Tonpilz Transducer Applications
24:16 Favorite Tonpilz Transducer
25:31 Resources and References
From the Curie Brothers' discovery of the piezoelectric effect, through to the person who really got ultrasonics off the ground; Paul Langevin. Langevin's sonar device provided the foundational insight that made ultrasonic applications possible.
The term “Langevin Transducer” is now used to describe any piezo-driven longitudinal resonator constructed by sandwiching piezo elements between two plates, commonly using a center bolt.
Rob demonstrates how Langevin's ultrasonic engine works, its different permutations, including the ultrasonic horn, the Tonpilz transmission transducer (known as the "Acoustic Mushroom") that transmits acoustic waves in liquid, and more...
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