Compression stress sensor
AssigneeS.C.A.I.M.E. S.A.
InventorsJean-Pierre Aumard, Jean-Claude Navarro
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Abstract
The invention is concerned with a compression stress sensor having a proof body (1) and strain gauges (7) connected together to form a Wheatstone bridge. The proof body (1) is made as a single piece from a monolithic rod which is cylindrical or prismatic with a circular or a regularly polygonal transverse section. This rod (1) is traversed in its median part by at least one pair of passages (3, 4) orthogonal one with respect to the other and located in a plane perpendicular to the longitudinal axis (X) of the proof body (1) to define between them independent measure columns (5). The end faces (2, 2a) of the proof body provide bearing faces receiving the forces to be measured and a strain gauge (7) is fixed to a surface of each independent measure column (5).
Claims15
A compression stress sensor comprising:
- a body comprising a monolithic rod having a longitudinal axis of symmetry, the monolithic rod having two end faces that provide bearing surfaces to receive forces to be measured along the longitudinal axis, the monolithic rod having at least one pair of traversing open passages formed as apertures passing therethrough so that said passages are orthogonal to one another and said passages within a given said pair intersect one another, each said passage lying in a plane perpendicular to the longitudinal axis, so that the passages define measurement columns therebetween;
- and
- a strain gauge fixed to a surface of each said measurement column.
A compression stress sensor comprising:
- a body comprising a monolithic rod having a longitudinal axis of symmetry, the monolithic rod having two end faces that provide bearing surfaces to receive forces to be measured along the longitudinal axis, the monolithic rod having at least one group of traversing open passages formed as apertures passing therethrough so that said passages within a given said group intersect one another, each said passage lying in a plane perpendicular to the longitudinal axis, so that the passages define measurement columns therebetween;
- and
- a strain gauge fixed to a surface of each said measurement column.
Dependencies are inferred from the claim text.