Test method
Modal test & modal analysis
Make natural frequencies visible.
What is it about?
The method in one sentence.
The modal test determines natural frequencies, damping ratios and mode shapes of a structure. In machinery, automotive and aerospace, it is a key tool to ensure the integrity, safety and performance of parts.
How does it work?
The part or structure is excited by a manual or automatic modal hammer or shaker. SonicTC captures the response, computes the frequency response function (FRF) and identifies modal parameters – in the frequency or time domain. SISO and SIMO test configurations are supported; coherence indicates the quality of the averaged FRF, while the H1, H2 and Hv estimators account for measurement noise.
Typical applications
- Natural frequency identification on bodies, blades, bridges
- Correlation: experiment vs. FEM simulation
- Damping analysis through decay behaviour after impulse
- SISO and SIMO setups with H1/H2/Hv estimators
- Building acoustics and structural dynamics in R&D
- Damping analysis via logarithmic decrement and iterative circle fit
Related module
SonicTC.AT
→ 100 % tested. 0 % destroyed.
Ready to experience acoustic test technology in your line?
Send us your part or schedule an online demo. First assessment within 24 hours.
Or call directly: +49 721 94650-0