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Many people think of unsophisticated surveying jigs when optical alignment is mentioned.
In response to local industry, a group at the University of Calgary investigates the capabilities of today's optical alignment systems and demonstrates improvements in accuracy and speed of measurements. The author, who has examined and cataloged hundreds of bearings failures, provides a simple system for determining serverity based upon rotational speed, vibration level, and vibration transmissibility. With the majority of particle and contaminant removal done by filters, it is essential to understand the testing performed on filters to arrive at their specifications. Well trained thermographers know they must compensate for environmental conditions when making infrared measurements. Which environmental conditions have the largest effects is not well known.