§ 02 · Test method

Material resonance analysis

100 % tested. 0 % destroyed.

What is it about?

The method in one sentence.

Acoustic resonance analysis makes inner material properties audible. Cracks, microstructure flaws, mix-ups, sintering grade or hardness distribution measurably alter the natural vibration behavior – and become non-destructively detectable. RTE has used this method for 20+ years in production.

Material resonance analysis

How does it work?

The part is briefly and reproducibly excited – e.g. by a hammer impulse or loudspeaker. The response is captured by microphone or accelerometer. SonicTC.AT computes the frequency spectrum, identifies natural frequencies and compares them to a reference master or ML classifier.

Typical applications

  • Crack detection on brake discs, sintered rings, cast parts
  • Sorting by sintering grades
  • Material mix-ups in incoming goods inspection
  • Hardness distribution on roller bearing components
  • Geometry deviation in micro mechanics
With SonicTC we made the jump from sampling to 100% inline testing – without replacing our existing hardware.
Dr. M. Hofmann Head of Quality Engineering · Tier-1 Automotive Supplier

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