- Every part, product or component has its unique acoustic resonant signature that reflects its composition, dimensions and stiffness.
- The resonant frequencies (Eigen-frequencies) are almost exactly the same from good part to part, however they will change when internal or external changes occur. Any deviation from the expected signature indicates a variation of the part characteristics or in the manufacturing process.
- The testing procedure consists of acquiring the sound response of the excited part, transform it in the frequency domain, and analyze a predefined set of selected frequencies. The test takes less than 1 second, allowing cost-effective and efficient quality-control.