Snecma

Etienne Tulie

Andre Leroux

Stéphane Rousselin

Frederic Leman

Serge Del Arco

Stéphane Clemot

Olivier Follerot

Michel Herbault

Philippe Armand Hugbart

Fabien Pouchard

Emmanuel Depots

Sébastien Voisin

Charly Buleon

A device for measuring vibration amplitudes of the blade tips in a turbomachine is provided. The device includes a support mounted in an orifice of a casing of a turbomachine, in which are housed two optical guides for the emission and reception of a light signal exiting inside the casing across from the tips of the blades of a turbine wheel Each optical guide includes an optical fiber connected by a mechanical connector to a needle of which the core is made of a material able to transmit a light signal and which is resistant to temperatures less than or equal to 1100&#xb0; C. and which exits at its distal end in the casing across from the blade tips.

Device for measuring vibration amplitudes of the blade tips in a turbomachine

A device for classifying strain gauges includes a holder capable of receiving strain gauges and capable of being rotated by a rotating device, the holder being connected to the rotating device by a linking device; and a heater capable of heating the holder and arranged about the mounting, the linking device including a cooling device capable of limiting the heating of the rotating device.

Device for classifying strain gauges

The method consists in depositing, by alumina spraying, an electrically insulating sublayer on the substrate, then in placing the sensor on the electrically insulating sublayer and finally in depositing, by alumina spraying, a cover layer on the sensor and the electrically insulating sublayer. It further includes, before the cover layer is deposited, a step in which an impermeable and thermally insulating cement is applied locally on wires of the sensor.

Method for fitting and protecting a sensor on a substrate

Growing community of inventors

Soisy Sur Seine, France

Etienne Tulie