Similar Cases:

Aircraft Collision

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Propeller Shaft Coupling Failure

A propeller shaft coupling on a large ocean going freighter failed in mid-ocean. APTECH was retained to make a determination of the root cause of the failure. APTECH engineers performed a computerized stress analysis and fracture mechanics analysis of the bolting and coupling arrangement. We concluded that the failure was due to normal wear-and-tear.

Satish Almaula		Plant failure and root cause analysis; process and design engineering analysis; process technology development and testing; plant engineering, operations, maintenance and safety management; plant and process control system management.

Michael Cronin, P.E.		Stress analysis, design evaluation, engineering mechanics

Geoffrey Egan, Ph.D.		Engineering mechanics, welding engineering, stress and fatigue analysis, risk analysis, nondestructive examination, project management.

Eric Sullivan, P.E.		Metallurgy, welding, failure analysis, fire and explosion investigations, equipment, piping.

Jeffrey Grover, P.E.		Mechanical engineering, failure analysis, civil engineering.