3How are you today, Mr. Motor? Machines are industrial assets that need to be maintained regularly in order to work in the most efficient and most reliable way. Just like going to a dentist for your regular check up. Waiting when you have a toothache before going to the dentist would be more costly, frustrating (scheduling issues) and painful.How are you today, Mr. Motor?
4Machine Doctor (MD): Let’s check how you’re doing, okay. Just like people, different technologies should be employed to get a better idea on the health condition of any machinery. This could include ultrasound, vibration analysis, motor testing, oil analysis, and infrared.Ultrasound PdMVibration Analysis & Diagnostics
5Qué es Ultrasound PdM?A technique that uses high frequency detectors to detect the high frequency signals that a friction energy produces as the rolling elements rotate inside a housing or raceways.
6Ultrasonic PdMDifferent brand of detectors, different models, same purpose. A trained inspector will know what to do.
7Vibration AnalysisA technique used to understand the machine’s response to internal or external stimulus or force applied to it. Vibration analysis identifies the source of stimulus that makes the machine behave accordingly.
8Vibration AnalysisDifferent analyzers with the same capabilities, sensors, and settings will give similar spectrum on the same location point of the same machine in the hands of a trained inspector.
9Information From Ultrasound Common Uses of Ultrasound PdM Change in the level of Ultrasonic Energy since last inspectionComparison of Ultrasonic Energy level between similar machines operating at the same conditions.Sound quality (Subjective)Common Uses of Ultrasound PdMLubrication of bearingsCondition Monitoring of rotating equipments
10Information From Vibration Analysis & Diagnostics Forcing frequencies relating to specific machine problemDiagnosticsSeverity of problemCondition based monitoringMachine health conditions identified includes:Rolling Element Bearing ProblemsJournal Bearing ProblemsMisalignmentLoosenessResonanceImbalanceElectrical Problems on AC and DC MotorsGear ProblemsCavitationsBelt Drive Problems
11Ultrasound CautionUltrasonic detector detects ultrasonic signal – does not differentiate source. Signal can be from a pump cavitation, bearing problem, under/over lubrication, etc.Highly sensitive to changes in operating conditions, i.e., speed, load, flow, temperature, etc.Proper and consistent technique and location spot is very important.
12Vibration CautionCorrect machine information entered i.e., type of machine, rpm, teeth count, coupling, etc.Proper sensor location and orientation.Process changes can affect reading.