STRAIN GAUGE Russian patent published in 2009 - IPC G01B7/16 

FIELD: physics; measurement.

SUBSTANCE: invention refers to measurement technology and can be used for deformation testing of various objects. Strain gauge contains linear displacement transducer consisting of two mutually travelling elements. Each transducer elements is mounted on separate platform supplied with linear or point support from deformable surface and hold-down tool perpendicularly to this surface. The part of supports is provided on one side of line passing through midpoint of loading of hold-down tool perpendicularly to deformation direction. One or more other supports are located on other side of the specified line. On one side supports are located on line perpendicular to deformation direction and are executed with great adhesion coefficient with deformable surface, than those on other side. Hold-down tool is one or more permanent magnet. One transducer elements can be one or more inductance coil, and another one is ferromagnetic core with shaft and support mounted on platform.

EFFECT: higher accuracy of relative deformation testing and improved performance.

7 cl, 4 dwg