Snecma

Turbomeca

Safran Aircraft Engines

Safran Helicopter Engines

Juan-Antonio Ruiz-Sabariego

Guillaume Julien Puech

Jean Vincent Manuel Meriaux

Nathalie Serres

Jean Vincent Meriaux

Guillaume Puech

Laurent Houze

A method for optimizing a low cycle and optionally high-cycle fatigue test rig includes selecting variable geometric parameters of the support member and/or of the workpiece of the rig, in addition to ranges of variation of these parameters, selecting at least one aim or design objective to be achieved, a variation in the values of at least a part of the abovementioned parameters having an influence on this aim or design objective, and testing one or a plurality of the values of the abovementioned parameters, in the respective ranges of same, and determining those values that make it possible to achieve the aim or design objection. With those values, the method including producing or modifying a support member and/or a workpiece on the basis of the optimized parameters.

Apparatus and method for optimizing a test bed that is utilized for testing low cycle and high-cycle fatigue including modifying a support

A low-cycle fatigue test rig reproduces bearing of turbine engine parts. The test rig includes a support member that is fixed to a frame and defines at least one bearing surface. A test piece is connected to a traction element for loading the test piece so that the test piece bears against the at least one bearing surface of the support member. The at least one bearing surface is supported by a support element that is mounted to rotate about a first axis on the support member. The test piece is connected to the traction element for articulation around a second axis that is perpendicular to the first axis. The test rig is configured to enable adjusting and locking the support element and the test piece in positions around the above-mentioned axes.

Oligocyclic fatigue or oligocyclic and polycyclic fatigue test rig

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Moissy-Cramayel, France

Juan-Antonio Ruiz-Sabariego