Festfrequenzprüfung Fix Jun 2026

| Feature | Resonance Search (Sweep) | Festfrequenzprüfung (Fixed) | | :--- | :--- | :--- | | | Find natural frequencies | Quantify response at a known frequency | | Duration | Minutes | Hours (for creep/fatigue) | | Data Type | Bode plot (amplitude/phase vs. freq) | Time history (amplitude vs. time) | | Best for | Design validation | Maintenance monitoring & durability |

Consider a large ID fan running at 990 RPM (16.5 Hz). A Festfrequenzprüfung reveals a constant 49.5 Hz vibration—exactly the 3rd harmonic. By locking a shaker to 49.5 Hz and measuring the bearing housing response, engineers discover that while the structure isn't resonating at 16.5 Hz, it is resonating at the 3rd harmonic. The fix? Add a stiffener at the 49.5 Hz antinode. festfrequenzprüfung

But there is a quieter, more specialized sibling in the testing family: (Fixed Frequency Testing). | Feature | Resonance Search (Sweep) | Festfrequenzprüfung

Modern FFT analyzers and complex pink noise generators are powerful, but they shouldn't replace the fundamentals. Fixed-frequency testing isn't just a relic of analog meters; it is a targeted stress test that ensures reliability. A Festfrequenzprüfung reveals a constant 49

While a resonance search asks "Where is the problem?" a fixed frequency test asks "How bad is the problem right now?"