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damage to DC motor drives or other equipment, consider start-small-and-
grow by using arc-spark measurement. For example, a Spark Data Collector
with a radio wave sensory antenna uses peak-to-peak stress wave analysis to
reveal spark events. Use this device to survey and locate faults. Follow up
with periodic measurements to monitor, trend and gauge severity.
Conclusion
Common failure mechanisms include abrasion, adhesion, fatigue, electric
discharge, corrosion and deposition. Mechanisms often progress in stages
from incipient to catastrophic, to which component types each applies, factors
that contribute and other factors that mitigate each mechanism.
Rapid equipment failure occurs when galvanic corrosion, stress corro-
sion, erosion corrosion and electric discharge mechanisms denigrate surface
morphology, synergistically accelerating progression from incipient to cata-
strophic under sustained effects of fatigue and adhesion mechanisms.
Proactive and predictive condition monitoring methods, including vibra-
tion, oil, thermal, motion, spark, and inspection are recommended to detect
root cause contributing factors and to measure various stages of progressive
failure. For example, start-small-and-grow a condition monitoring program
already covering vibration, thermal, motion and inspection by adding on-site
oil analysis with wear debris analysis and adding spark detection. ML
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