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Proceedings Paper

Strain monitoring of a newly developed precast concrete track for high speed railway traffic using embedded fiber optic sensors
Author(s): Stephanie Crail; D. Reichel; U. Schreiner; E. Lindner; Wolfgang R. Habel; Detlef Hofmann; Frank Basedau; K. Brandes; A. Barner; Wolfgang Ecke; Kerstin Schroeder
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Paper Abstract

In a German slab track system (Feste Fahrbahn FF, system Boegl) for speeds up to 300 km/h and more different fiber optic sensors have been embedded in several levels and locations of the track system. The track system consists of prestressed precast panels of steel fiber concrete which are supported by a cat-in-situ concrete or asphalt base course. The sensors are to measure the bond behavior or the stress transfer in the track system. For that, tiny fiber-optic sensors - fiber Fabry-Perot and Bragg grating sensors - have been embedded very near to the interface of the layers. Measurements were taken on a full scale test sample (slab track panel of 6.45 m length) as well as on a real high speed track. The paper describes the measurement task and discusses aspects with regard to sensor design and prefabrication of the sensor frames as well as the embedding procedure into the concrete track. Results from static and dynamic full scale tests carried out in the testing laboratory of BAM and from measurements on a track are given.

Paper Details

Date Published: 27 June 2002
PDF: 6 pages
Proc. SPIE 4694, Smart Structures and Materials 2002: Smart Sensor Technology and Measurement Systems, (27 June 2002); doi: 10.1117/12.472627
Show Author Affiliations
Stephanie Crail, Deutsche Bahn AG (Germany)
D. Reichel, Max Boegl GmbH (Germany)
U. Schreiner, Max Boegl GmbH (Germany)
E. Lindner, Max Boegl GmbH (Germany)
Wolfgang R. Habel, Federal Institute for Materials Research and Testing (Germany)
Detlef Hofmann, Federal Institute for Materials Research and Testing (Germany)
Frank Basedau, Federal Institute for Materials Research and Testing (Germany)
K. Brandes, Federal Institute for Materials Research and Testing (Germany)
A. Barner, Federal Institute for Materials Research and Testing (Germany)
Wolfgang Ecke, Institut fuer Physikalische Hochtechnologie eV (Germany)
Kerstin Schroeder, Institut fuer Physikalische Hochtechnologie eV (Germany)


Published in SPIE Proceedings Vol. 4694:
Smart Structures and Materials 2002: Smart Sensor Technology and Measurement Systems
Daniele Inaudi; Eric Udd, Editor(s)

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