Anybody here familiar with defect frequencies for cardan/Universal joint? Thanks
Predominantly you will find 1X and 2X.
review the thread at http://www.maintenance.org/top...1#399590942963460651 for some more detailed information.
I have found that vibration frequencies of 2X and 4X shaft speed are good indicators. Other measurement methods include:
1) Airborne ultrasound to detect joint/bearing wear
2) Torsional vibrations
3) Infrared thermal imaging
Another link to a good PPT presentation...http://www.maintenance.org/top...2#399590942963871272