Metallurgical Failure Investigation of a Deformed and Cracked Lashing-Load Ring of a Heavy-Duty Gas Turbine Engine | Werkstofftechnische Schadensklärung einer verformten und gerissenen Anhängeöse einer Großgasturbine

A severely deformed and cracked lashingload ring of a heavy-duty gas turbine engine was received from the client as-delivered from the site. The damage was found upon a regular non-destructive inspections (NDT). A metallurgical failure investigation was ordered to determine whether there was micro structural damage due to excessive thermal loads, whether there were any other material defects that could have contri buted to the failure, or whether the lifting lug was abused or overloaded in any way, and whether this was the only cause of failure. It was determined that the subject lifting lug failed by tensile/bending overload.