A9.1 Excitation of Guided Acoustic Waves Using Ignition Sparks
- Event
- SMSI 2021
2021-05-03 - 2021-05-06
digital - Band
- SMSI 2021 - Sensors and Instrumentation
- Chapter
- A9 Ultrasonic and Acoustic Measurements
- Author(s)
- S. Krempel, A. Backer, F. Dötzer, K. Drese - Coburg University of Applied Sciences and Arts, Coburg (Germany)
- Pages
- 97 - 98
- DOI
- 10.5162/SMSI2021/A9.1
- ISBN
- 978-3-9819376-4-0
- Price
- free
Abstract
Many sensor principles are based on the excitation and detection of guided acoustic waves (GAW). These are usually generated by mechanical coupling of piezoceramic transducers with the help of thin coupling layers. With electromechanical transducers (EMAT) or pulsed lasers, GAW can also be excited without a coupling layer or direct coupling. A further, very cost-effective possibility to excite Lamb waves on thin sheets without direct contact is shown here in the experimental setup by means of electric
sparks.