high vibration does not mean bad low vibration does not ... day 7 th_presentation-manorom.pdf ·...
TRANSCRIPT
Understand ISO-10816
High vibration does not mean bad
Low vibration does not mean good
Question
Machine-1 has vibration at 12 mm/s at 25 Hz speed, and overall vibration 18 mm/s
Machine-2 has vibration at 3 mm/s at 12,5 Hz speed, and overall vibration 18 mm/s
Machine-3 has vibration at 10 mm/s at 50 Hz speed, and overall vibration 18 mm/s
Power/size all the same. Vibration in RMS value
Case-1, Broadband frequency 2-15000 Hz
Case-2, Broadband frequency 10-1000 Hz
Case-1 Which machine is the best condition ?
Case-2 Which machine is the shortest MTTF ?
Which machine would give the highest MTTF ?
Agenda
1
2
3
4
5
BBackground, vibration severity chart ISO guidelines
Sort of ISO vibration relates
Pump manufacturers apply ISO-10816
Understand ISO-10816-1
Conclusion
And many vibration
Severity charts e.g.
Crest engineering GD engineering
IRD, Etc.
1. Background
1. Background
2. Sort of vibration relates
Table-3
2. Sort of vibration relates
Class-3
Class-2
3. Pump manufacturers apply ISO-10816
3. Pump manufacturers apply ISO-10816
3. Pump manufacturers apply ISO-10816
3. Pump manufacturers apply ISO-10816
3. Pump manufacturers apply ISO-10816
4. Understand ISO-10816-1
4. Understand ISO-10816-1
4. Understand ISO-10816-1
Question
Machine-1 has vibration at 12 mm/s rms at 25 Hz speed, and overall vibration 18 mm/s rms
Machine-2 has vibration at 3 mm/s rms at 12,5 Hz speed, and overall vibration 18 mm/s rms
Machine-3 has vibration at 10 mm/s rms at 50 Hz speed, and overall vibration 18 mm/s rms
Power/size all the same.
Case-1, Broadband frequency 2-15000 Hz
Case-2, Broadband frequency 10-1000 Hz
Case-1 Which machine is the best condition ?
Case-2 Which machine is the shortest MTTF ?
Which machine would give the highest MTTF ?
Answer
Machine-1 has vibration at 12 mm/s at 25 Hz speed, and overall vibration 18 mm/s
Machine-2 has vibration at 3 mm/s at 12,5 Hz speed, and overall vibration 18 mm/s
Machine-3 has vibration at 10 mm/s at 50 Hz speed, and overall vibration 18 mm/s
Power/size all the same. Vibration in RMS value
Case-1, Broadband frequency 2-15000 Hz
Case-2, Broadband frequency 10-1000 Hz
Case-1 Which machine is the best condition ? Can’t point 1 or 2
Case-2 Which machine is the poorest condition ? Can’t point 2or 3
Which machine would give the highest MTTF ? Machine-2
Case -2 Which machine is the best condition ? Machine 1
5. ConclusionHigh vibration does not mean bad
Low vibration does not mean good
Low vibration amplitude at high frequency is more dangerous than low frequencyLow vibration at high damping is more dangerous than high vibration at low damping
ISO-18016 is based on 3600 rpm at 1,7 factor of inertial mass. That indicates unacceptable condition, but when dismantle, it is still good condition.
With technologies, we give differences.
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