ROOTCASTLE / ENGINEERING LAB
Mechanical looseness
Loose joints or bearing clearances can create nonlinear contact at impacts.
Mechanism
Loose joints or bearing clearances can create nonlinear contact at impacts.
Typical symptoms
Harmonics, impacts at variable phase ay maaaring magpakita. Mga symptom ay maaaring magbago sa load.
Methode ng pagkakabadyet
Suriin ang alon kasama ang spectrum; ihambing ang mga lokasyon ng pundasyon at bearing.
Alternative explanations
Ang rubbing, misalignment at sensor mounting errors ay maaaring maggenerate ng harmonics.
Additional measurements
Torque ng fastener, inspection ng crack, clearance checks at operating deflection shapes.
Likely frequency components
1×, 2×, 3× …; subharmonics possible
Mga limitasyon: nang walang speed, load, mounting, at transmission-path context, hindi ito diagnoses. Ang spectrum examples ay conceptual, hindi complete fault models o field measurements.
SIMULATED · NOT LIVE TELEMETRY
Vibration / FFT
Model and assumptions
512 samples; deterministic sinusoids and seeded noise. FFT is one-sided peak amplitude, not RMS. Δf = fs/N. Hann coherent gain is corrected; spectral leakage can remain. The 4.7× component is not a physical bearing-fault model.
Educational model. Results are not sufficient to diagnose a machine or establish safe operating limits.
Further reading: SKF — Ang mga pag-aalinlangan ay makakatulong na makita ang mga nasira na sangkap ↗