An Introduction to Vibration Monitoring

Training Provided by Petroleum Training Institute Vibration Analysis Principles of vibration analysis Methods of machine maintenance The three principles of vibration analysis Trend monitoring Definition of vibration Practical application of vibration analysis Vibration analysis and machine fault detection Vibration frequency Vibration amplitude Monitoring and the seismic velocity transducer The accelerometer None contact pick-ups Location of transducers on the machine under test The three axes of vibration measurementNoise levels and the Decibel Data analysis From analysis to correction The main characteristics of vibration Vibration velocity Definition and units of measurement Vibration acceleration Definition and units of measurement Vibration phase Definition and units of measurement The importance of vibration characteristics Vibration characteristics and severity of vibration Vibration severity and its effects Velocity severity and its effects The vibration severity chart Overall machine condition Measurement of noise The Decibel Definition of the Decibel Converting sound pressures to Decibels and vice versa Frequency response of the human ear Sound fields in a machine compartment Noise levels and machine condition Transducers used in machine condition monitoring The proximity probe Mounting of a proximity probe Velocity transducer The accelerometer The condenser microphone Temperature measurement The thermocouple The resistance temperature detector Pressure measurement Bourdon tubes, bellows and diaphragms The starin gauge Measurement of displacement The linear variable differential transformer (LVDT) Data collectors and predictive maintenance A basic vibration analyser with manual tuning The analyser spectrum Rolling element bearings Detection of faults in these bearings The shock pulse method Spike energy method Balancing Static balance using the vector method Data collectors for predictive maintenance Continuous monitoring from installed instrumentation A computerised data collection system The spectrum analyser Reports generated by automated anaklysers Installed vibration monitoring systems The vibration switch Single and multi-channel monitors Signal conditioning instrumentation Data collection Monitoring and data collection as one unit Unbalance and misalignment Unbalance Possible causes of initial unbalance Possible causes of an increase in unbalance Balancing of equipment Misalignment Possible causes of increased misalignment Misaligned ball/ roller bearing Pre-loading Misaligned asleeve bearings Misaligned coupling Bent shaft Harmonics Thermal effects Symptoms of serious bearing damage Additional instrumentation used in vibration analysis Tape recorders The cathode ray oscilloscope Analogue chart recorders x - y chart recorder Electronic filters, high pass, low pass etc Defective bearings and eccentricity Defects associated with ball/ roller bearings Bearing inspection Eccentricity Eccentricity in gear trains Sidebands Eccentricity in induction motors Mechanical looseness and defective belt drives Mechanical looseness Examples of mechanical looseness Vibration associated with belt drives The belt drive frequency formula Belt defects Vibration from electrical and mechanical sources; resonance Vibration from electrical sources Sources related to the power supply Permeance variation in dc machines Rotating magnetic field in 3-phase alternators and synchronous motors Permeance variation and rotating magnetic field in induction motors Magneto stiction Vibration from mechanical sources Vibration from reciprocating machines Vibration from fans and blowers Vibration from hydraulic pumps Resonance

An Introduction to Vibration Monitoring Vibration Analysis
The aim of the course is to produce a competent technician able to interpret data and advise on machine condition. Also it is hoped to improve the interface between the disciplines when deciding on the type of maintenance to be applied. Finally, it is our aim to provide a better all round technician, capable of making these decisions with confidence and accuracy
The methodology is classroom based formal lecture backed up by video, DVD and CBT as and where appropriate.
Assessment is by multiple choice question paper and practical competence based exercises.

About The Training Provider: Petroleum Training Institute

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