 Louis
E. Morando
Vice President,
SPM Instrument
TITLE
Technology
Overview: SHOCK Pulse Method
BIOGRAPHY
A Connecticut native who graduated from the University of
Connecticut with a Bachelor’s of Science degree in
Chemical Engineering. His early career consisted of the
design and manufacture of heat transfer equipment and pressure
vessels for the Nuclear Power Industry with a progression
into the sales of this equipment for seven years.
In addition, he has 11 years experience in the design and
manufacture of large tonnage compression and refrigeration
systems using rotary screw compressors. He has held the managerial
positions of Refrigeration Sales Manager and then Plant Manager
of Industrial Refrigeration Division.
Lou currently has 17 years of experience in the sales and
application of Predictive and Preventive Maintenance Systems
and Products for bearing and machine condition monitoring.
He has written and presented numerous papers on the Practical
Approach to Machine and Bearing Condition Monitoring at such
conferences as the Vibration Institute, National Pulp and
Paper Maintenance Conference and the National Predictive
and Preventive Maintenance Conference.
ABSTRACT
The name, SPM, is derived from the technology that SPM Instrument
developed and patented in the early 70’s in Sweden.
The Shock Pulse Method is the monitoring and analyzing of
high frequency compression (shock) waves generated by a bearing
while rotating. From this research, empirical data was developed
and patented to measure the theoretical film thickness of
the lubricant in the rotating bearing along with an analysis
of the overall condition of the bearing surfaces.
The way these signals are separated is really what makes
this technology unique. Unlike vibration analysis that monitors
a broad vibration band and then tries to isolate unique frequencies;
SPM has developed a means to only “look” at the
high frequency signals of antifriction bearings. Having ensured
that the signal quality truly reflects a bearing signal,
the development of a defined database by SPM became practical.
The ability to analyze lubrication changes versus surface
damage becomes more practical and repeatable.
Through years of testing, this database has been developed
and perfected so as to represent the “True” operating
condition of the bearing being monitored. Regardless of whether
the bearing is 5 days old or 5 years old the reading taken
represents the operating condition at that time.
A Practical Approach to Bearing Condition Monitoring:
The Shock Pulse Method
A. Theory:
1. What is Shock Pulse?
2. How it differs from vibration.
3. Pro’s and Con’s.
B. Application:
1. Where it can be used.
2. How to implement it.
3. What is needed to start a program?
C. Evaluation:
1. How does lubrication monitoring work?
Preventive maintenance.
2. Does reported damage require bearing replacement?
3. How are alarm levels determined?
4. Data logger versus non-data logger.
5. How do you determine what equipment to monitor?
6. How frequent do you monitor.
D. The Practical Alternative.
Be sure to visit this presentation to learn more about the
subject
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