Acoustic material testing is a method for quality testing of components (such as cast parts, sintered metal parts, plastic parts, ceramic parts) based on acoustic resonance analysis. The components are externally stimulated to vibrate and show a typical “sound” with resonance frequencies that are unique for them.
The method uses the effect that various defects such as cracks or material changes have an influence on the resonance frequencies and change the acoustic pattern. If one now compares the resonant frequencies of components of the same type and detects anomalies, this is a strong indication of possible failures in the component. The method can be carried out objectively and reproducibly with the help of suitable testing software. It is well suited for series production and enables short cycle times due to the rapid testing and evaluation.