Electromechanical fundamentals of ultrasound technology – Institut für Dynamik und Schwingungen

Art der Veranstaltung	Vorlesung und Übung
Niveaustufe	Hauptstudium/Master
Semester	WS
Creditpoints	5

Goals

Piezo and ultrasonic technology is used in many areas of industry every day. The many applications are hardly noticeable to the end user, since it is mainly used in manufacturing processes. For example, ultrasound is widely used in the packaging or plastics industry to join a wide variety of components, or in the food industry to cut products. In medical technology, there are also a wide range of applications in surgery or dentistry. In addition, ultrasound is often used by sensors, such as the distance sensor in cars. The lecture covers the basics of piezo technology, without which ultrasonic transducers would be unthinkable today, as well as the basics of the use, operation and model-based design of ultrasonic systems using many application-oriented examples. In the exercises and laboratories, many of the steps involved in designing ultrasonic transducers are carried out by the students themselves.

The lecture is in English; the same lecture in German is offered in the summer.

Students are able to:

Explain the structure of ultrasonic systems
Explain ultrasonic systems based on the structure
Design power ultrasonic transducers based on models
Characterize ultrasonic transducers and systems
Select and parameterize the appropriate control for the process
Calculate the sound fields generated by ultrasonic transducers in fluids

Content

The module teaches the basics of ultrasound technology for the various areas of application.

Application areas of ultrasonic technology
One-dimensional wave equation of the rod and its solution
Reflections and transmissions in the rod, eigenmodes of the rod
Influence of a variable cross-section
Transmission matrices
Discretization of composite rod-shaped components
Basics of piezoelectric materials
Transmission matrices of piezoelectric rods and calculation of large/complex systems with the transmission matrices
Properties of transducers using the example of an academic transducer
Design of ultrasonic systems, with one on power transducers
Three-dimensional wave equation for fluids and gases (esp. air)
Solving the three-dimensional wave equation of fluids and gases
Three-dimensional wave equation for solids
Wave types in solids and behavior at the interfaces