Acoustic Resonance Analysis

Acoustic resonance analysis, often also called “sonic testing” is one of the oldest non-destructive testing methods. An impact is applied to the test piece to make it vibrate and the sound is assessed by ear or through a microphone. Using this method the tester or a testing device can recognize cracks and inclusions or can assess hardness and grain structure.

The book Acoustic Resonance Analysis by Ingolf Hertlin is the first one on this subject and has been published by the Castell Verlag, Wuppertal, as Volume 5 in the series “Publications on Non-Destructive Testing – NDT Compact and understandable”. The author is the Managing Director of RTE Akustik + Prüftechnik GmbH, Pfinztal. The book conveys not only the fundamental of acoustics but also the principle of resonance analysis and also gives examples of Solutions in industrial series testing.


1. Introduction

2. Physics

3. Resonance analysis

4. Testing techniques

5. Applications

6. Resonance analysis within the NDT

7. Appendix (concepts, designation, literature)

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