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Vibration and turbomachinery
Practical guides on vibration analysis, condition monitoring and reliability of turbocompressors and turbogenerators.
November 2, 2026 · 7 min read
API 670 Explained: What It Is and How Machinery Protection Systems Work
What API 670 covers, how the probe–proximitor–rack chain works, how alert and danger setpoints trip a machine, and why protection is not diagnostics.
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November 2, 2026 · 7 min read
Startup and Shutdown Analysis: How to Read Bode and Polar Plots
How to read Bode and polar plots from machine startups and coastdowns: critical speeds, amplification factor, slow roll compensation and run-to-run trends.
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November 2, 2026 · 7 min read
How to justify online monitoring with the cost of unplanned downtime
A practical method to build the business case for online vibration monitoring from the real cost of an unplanned shutdown and your own failure history.
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November 2, 2026 · 7 min read
Oil whirl vs. oil whip: fluid-film bearing instability explained
Why a component near 0.45X shows up in plain journal bearings, how to tell oil whirl from oil whip in spectra, waterfalls and orbits, and what to do next.
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November 2, 2026 · 7 min read
How to interpret shaft orbits in turbomachinery
What a shaft orbit is, how X/Y probes and the Keyphasor build it, and what typical shapes reveal about unbalance, preloads, rubs and instability.
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November 1, 2026 · 4 min read
How to detect turbocompressor faults with vibration analysis
Unbalance, misalignment, rubs and instability each leave a distinct fingerprint in shaft vibration. Here is how to read them and act before a trip.
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