Ariel Corporation was working on an issue with Rotor Bearing Technology & Software, Inc. (RBTS) for a company in Australia. Since its start up, the customer had experienced multiple elastomeric element failures in the drive coupling on their large coal bed methane...
Weeks after commissioning, a compressor unit tripped on high motor vibration. Upon inspection, cracks were found in the center piece of the coupling indicating a possible torsional vibration problem. The unit consisted of a 3150 HP induction motor operating at 894...
A TorqueTrak 10K user in a Gulf Coast refinery was having issues with their compressor train. The compressor train uses a synchronous motor drive in a hard start application. In that application, torque pulses occur from 120 Hz to 0 Hz during the transient start-up....
Torque is an important variable to the designers and manufacturers of wind turbine technology. Torque data is especially critical in the evaluation of wind turbine components such as bearings, gears, and braking systems. By providing the true mechanical work being...
At a crude oil pumping station (consisting of 10 units with 4500 HP/ unit), a problem arose where the elastomeric couplings melted during regular operations as seen in this photo. Suspecting torsional vibration as the cause of failure, Mr. Gilberto Rios of DYNA...
