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Failure Analysis & Redesign of a Fracking Pump

Fracking Pump Failure Analysis Fracking Pump - FEA of Transmission Keyway

We were asked to perform a failure analysis on a pump used in fracking operations.

The pump is driven through a transmission by a 2700 HP engine which varies in RPM. The transmission is connected to the pump by a universal joint to a flange and shaft assembly. This assembly is made up of a flanged input hub, key, and pump input shaft. The flanged hub and input shaft have an interference fit reducing the overall load on the key. The original design incorporated a 4 inch diameter shaft, which, during testing, had failed. We not only determined the fatigue life of the 4 inch shaft, but also designed a 5 inch shaft to increase the expected design life of the new pumps.

 

See also:

Failure Analysis & Redesign of an Oil/Gas Threaded Joint Casing
Failure Analysis of a Seized Piston on a Monel Series 3800 Pressure Relief Valve
Failure Analysis

 

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