Case 44: Failure of an LP Turbine Disc in an Aircraft Engine
During cyclic spin tests, the turbine disc in an aircraft engine broke apart with a loud noise, followed by a fire. Based on a detailed examination and the results of SEM fractography and hardness measurements, failure analysts concluded that a locking plate became dislodged due to the shearing of the screws that hold it in place. They also provided recommendations to remediate the problem.
Failure of an LP Turbine Disc in an Aircraft Engine, Failure Analysis of Engineering Structures: Methodology and Case Histories, By V. Ramachandran, A.C. Raghuram, R.V. Krishnan, S.K. Bhaumik, ASM International, 2005, p 168–171, https://doi.org/10.31399/asm.tb.faesmch.t51270168
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