Safran Aircraft Engines

Snecma

Michael Piers Hansom

Patrice Eneau

Christian Bariaud

François Pierre Michel Comte

Huu-Thanh Tran

Geoffrey Juan Desmeure

Anais Suzanne Amelie Gaubert

Arnaud Cyril Longuet

Marine Laetitia Camille Chevalier

Lucie Marie Ida Lanciaux

A method of determining a maximum acceptable alternating stress at a point of a part subjected to cyclic loading: simulating that the part is subjected to constant loading equal to a threshold value during a level period, and assuming that the part has elasto-viscoplastic behavior; from the results of the simulation, determining a final static stress at the point at the end or after the end of the level period; and for the point under consideration, using a Goodman diagram to determine the maximum acceptable alternating stress, which is determined for a static stress equal to the final static stress; the duration of the level period being equal to the duration of the loading of the testpieces that were used to draw up the Goodman diagram.

Method of determining a maximum acceptable alternating stress for a part that is subjected to cyclic loading; a unit for determining such a stress

A foundry core for manufacturing a blade of a turbomachine including a tip section offset, including a core element for forming various internal cavities, the core element including a leading-edge cavity internal core, central cavity internal cores, and a trailing-edge cavity internal core. The internal core for the central cavity adjacent to the internal core for the trailing-edge cavity includes a bulge extending toward the core for the leading-edge cavity.

Foundry core assembly for manufacturing a turbomachine blade, associated method of manufacturing a blade and associated blade

Growing community of inventors

Moissy-Cramayel, France

Michael Piers Hansom