The presentation focuses on the monitoring of ultra-low and low-speed machines. It covers the bearing failure process, highlighting the importance of accurate condition monitoring.
When vibration enveloping was introduced several decades ago, it became possible to detect damages in earlier stages than before, and it then became relevant to talk about realistic pre- warning times.
Within the vibration community, it is commonly accepted to describe a spalling process in a bearing in four stages; from the first microscopic sign to a severely damaged bearing...
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