Applied Vibration Technology

11B2301

Bachelor

German

5.0

only winter term

1 semester

Based on the modules in technical mechanics, electrical engineering and measurement technology, this module deals with applications of vibration technology. The focus is on the predictive and safety-related monitoring of machines and systems. In addition to acceleration measurements, acoustic measurements are also considered.

1. Introduction: Basic concepts and origin of vibrations, including repetition of forced vibrations, modes, etc.

2. Motivation: Vibration measurement as a component of predictive and safety-related monitoring of machines and systems. Comparison of measurements with acceleration sensors and with microphones (acceleration vs. sound).

3. measurement of vibrations with accelerometers and microphones (freedom from feedback, frequency range, amplitude range, directional microphones, sound power level of machines)

4. evaluation of vibration data (characteristic values, trends, FFT) for preventive and safety-related monitoring (condition monitoring and safety monitoring). For example, the damage frequencies of rolling bearings, gears or fans are analysed, particularly with regard to preventive maintenance. Integration of the measurements into plant operation.

5. modelling and metrological characterisation using the example of a loudspeaker: 

Modelling of chassis, enclosure and crossover with concentrated components
Coupling between mechanical and acoustic system
Objective evaluation (measurement)
Subjective evaluation (listening test)

6. measures for active and passive vibration and noise reduction

The total workload for the module is 150 hours (see also "ECTS credit points and grading").

• oral exam

• Field work / Experimental work

oral exam: s. "Allgemeiner Teil der Prüfungsordnung"

The experimental work comprises 2 to 4 experiments. 

Fundamentals of electrical and mechanical oscillations, frequency domain, instrumentation, rolling bearings

The knowledge of vibrations from technical mechanics and the "Electrical engineering and instrumentation" module is applied to vibration measurement in machines and systems. The mechatronic components (mechanical, electronic and programmed components) are familiarised with their mode of operation and their interaction.

The results of vibration measurements can be used to make statements about the status of machines and systems. This applies to both safety-related monitoring (with the aim of shutting down) and predictive measurements (with the aim of optimising maintenance cycles). The knowledge can be used to increase efficiency and conserve resources.

• Kre?mann, Reiner

• Kre?mann, Reiner