Measuring and testing – Specimen stress or strain – or testing by stress or strain... – In static structures
Patent
1994-07-07
1995-10-31
Chilcot, Richard
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
In static structures
73768, G01M 500
Patent
active
054619246
ABSTRACT:
The invention concerns a sensor arrangement which is installed in the surface of carriageways or runways and serves to detect the wheel loads of vehicles or aircraft and/or their shear components on the surface during travel. The construction of the flanged tube sensor with piezoelectric crystal plates makes possible modular assembly, in that either piezo-plates sensitive to pressure P only, or to shear S, or to combinations of both are installed, since all piezo-plates have the same dimensions. The force introduction flange makes possible a concentration of the force lines onto the measuring arrangement with a substantial mechanical amplifying effect. The packing of the flanged tube sensor ready to install ensures proper fitting and positioning in the installation groove. Here the two rolling force insulation compounds and the foam insulator of the tubular part are important. The application of the invention lies in traffic management for weight detection. With the addition of shear measuring, new applications are feasible in vehicle testing tracks and aircraft landing runways, opening up new aspects of driving dynamics and security.
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Vehicle Weighting in Motion with Fibre Optic Sensors, J. Boby, S. Teral, J. M. Caussignac and M. Siffert; Mar., 1993, pp. 45-47.
Calderara Reto
Caprez Markus
Jahreiss Lothar
Sonderegger Hans C.
Chilcot Richard
K.K. Holding AG
Noori Max H.
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