Etat Francais Represente Par Le Delegue General Pour L'armement

Silmach

Vincent Walter

Patrice Minotti

Eric Joseph

Pierre-Francois Louvigne

Vianney Sadoulet

Paul Vescovo

Pascal Girardin

Thierry Cote

Louvigné Pierre-François

Philippe Hélin

Pierre-François Louvigné

Patrice Minottl

A deformation passive sensor includes a system for detecting a variation in the distance between two points or regions of a structure, and a carrier having first and second parts configured to be fixed to the points or regions. The system includes a measuring assembly carried by the first part and actuatable only in one measurement direction in order to measure and store a measurement associated with at least one deformation in a measurement direction, and an actuating device including an intermediary assembly having an actuating member for actuating the measuring assembly, and an actuating assembly having a push part facing the intermediary assembly and configured such that the actuating member is moved with respect to the measuring assembly only when the second part moves in the measurement direction.

Strain sensor with measurement discrimination according to the deformation direction

The present invention relates to the field of microsensors, and particularly to a passive and reversible deformation sensor, specifically cycles of deformations in a direction OX of a structure, specifically during cycles of temperatures or mechanical stresses to which the structure is subjected, this sensor including elements () for detecting and, preferably, counting cycles of variations in the distance between two points or areas of a structure, these elements including a support having first and second portions () attachable to, respectively, either of the two points or areas of the structure, wherein the detecting elements are associated with each of the first and second portions of the support, sensor characterized by in that the detecting elements include elements () for distinguishing between at least two different thresholds of cycles of variations in distance.

Passive, reversible deformation sensor

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Besançon, France

Vincent Walter