A pump coupled to a diesel engine (variable speed) vibrated violently when hot, but ran smoothly during morning startup. Operators assumed "thermal growth" but didn't know how to measure it.
By following the guidelines and best practices outlined in this article, engineers and technicians can effectively use vibration analysis to improve machine reliability, increase machine performance, and reduce maintenance costs. Whether you are a seasoned vibration analyst or just starting out, this article provides a comprehensive guide to vibration analysis and its applications.
12,000 RPM compressor, sleeve bearings. Symptom: Sudden vibration spike at 5,800 RPM (sub-synchronous), operator alarm. Practical Case Studies On Vibration Analysis Pdf
A motor in a manufacturing plant was experiencing high vibrations, which were causing concerns about its reliability. Vibration analysis was performed using a vibration sensor and data acquisition system. The vibration data was analyzed in the time domain, which revealed a high level of axial vibration. This indicated a misaligned shaft, which was subsequently realigned.
PRACTICAL CASE STUDIES ON VIBRATION ANALYSIS by Debasis Bhattacharyya A pump coupled to a diesel engine (variable
High-impact, impulsive shocks occurring at regular intervals.
The presence of the BPFI peak with multiple harmonics and surrounding sidebands spaced at 1X running speed confirmed a severe defect on the inner ring raceway (Stage 3 bearing degradation). Corrective Action & ROI Whether you are a seasoned vibration analyst or
Provide the exact for calculating bearing frequencies (BPFO, BPFI, BSF, FTF).