• Day 3: Noise and vibration analysis

Day 3 of the imc "Test & Measurement Days"

Noise and vibration analysis

On the third day of the seminar it is all about sound and vibration. You will learn about  the background of NVH testing, sensors and hardware and make important analyses such as sound, vibration, structure and order analysis..

Agenda and course content:

10:00 - 10:15 am

Reception & Greeting

10:15 - 11:00 am

Basic terminology of NVH testing - part I

  • What is sound?
  • The human ear
  • Sound pressure level, evaluation, averaging Leq
11:00 - 11:15 am Break
11:15 - 12:00 Basic terminology of NVH testing - part II
  • Third-octave and octave analysis
  • Sound power analysis

Examples with imc software

12:00 - 1:00 pm

Lunch break - You're invited

1:00 - 1:45 pm

Vibration analysis

  • Vibration sensors
  • Basics of Fourier-transformation
  • Shannon, Leakage, Picket Fences, window functions
  • Comparison of third octave/octave analysis with FFT analysis

Examples with imc software

1:45 - 2:00 pmBreak

2:00 - 2:45 pm

Structural analysis

  • Transfer function (magnitude and phase)
  • Coherence
  • Experimental modal analysis
  • Excitation with pulse hammer

Examples with imc software

2:45 - 3:00 pm Break

3:00 - 3:45 pm

Order tracking analysis

  • What are rpm-dependent vibrations?
  • Bending and torsional vibrations
  • Sensors, incremental encoders
  • Order tracking analysis with imc WAVE

Examples with imc software

from 3:45 pm

Open discussion & networking

Instructor

Dipl.-Ing. Peter Schreiweis, imc Test & Measurement GmbH

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