Experimental techniques are important tools for analyzing and assessing the acoustics of machine structures. In the machine acoustics tutorial several measurement techniques for analyzing structure borne and airborne sound are introduced. The participants will perform measurements and will analyze the results by means of various signal processing techniques. The machine acoustics tutorial introduces several data acquisition systems.

Subjects:

• digital data acquisition, calibration, and spectral analysis
• measurement of the damping
• determination of transfer functions and of the input impedance
• operational deflection shape analysis by means of scanning laser Doppler vibrometry
• determination of the sound power

The respective experiments on the topics are prepared in advance by the participants using the learning materials provided. The experiments are then carried out under supervision and the results of the measurements taken are documented in a written report and presented and discussed in an oral colloquium.

Organisation

You will receive all the necessary organizational information and learning materials before the start of the tutorial as part of a kickoff. For self-assessment, a test will be held during the kick-off, which will cover basic programming skills in MATLAB. The tutorial is conducted in up to two groups of 3-6 people, who complete the tutorial in the morning or afternoon.

Prerequisites:

• Required: Basic programming skills in MATLAB or Python or the willingness to acquire these before the tutorial (e.g.MATLAB Onramp)
• Required: knowledge of English
• Recommended: Attendance of our lecture: ‘Fundamentals of machine acoustics ’