Determination of structural parameters concerning load capacity based on fibre Fabry-Perot interferometers

Wolfgang R. Habel; Detlef Hofmann

doi:10.1117/12.184819

13 September 1994 Determination of structural parameters concerning load capacity based on fibre Fabry-Perot interferometers

Wolfgang R. Habel, Detlef Hofmann

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Proceedings Volume 2361, Second European Conference on Smart Structures and Materials; (1994) https://doi.org/10.1117/12.184819
Event: Smart Structures and Materials: Second European Conference, 1994, Glasgow, United Kingdom

Abstract

Fiber optical sensors were applied on a cracked prestressed concrete bridge in Berlin to get the static and dynamic structure response under load. Interferometric sensors (extrinsic Fibre-Fabry-Perot) were adhered on prestressing steels of a tendon opened inside the box girder; Intensity- modulated fiber sensors were tightened over the cracked concrete region. The very high resolution of interferometric sensors ((epsilon) equals +/- 0.024 micrometers /m) simultaneously allowed to measure strain of tendon and dynamic (natural frequency) response. This bridge is the first prestressed concrete structure in Germany to have fiber optic interferometric sensors installed. The optimization of the adhesive bonding and embedment technique are problems that need to be addressed as part of the further development.

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Wolfgang R. Habel and Detlef Hofmann "Determination of structural parameters concerning load capacity based on fibre Fabry-Perot interferometers", Proc. SPIE 2361, Second European Conference on Smart Structures and Materials, (13 September 1994); https://doi.org/10.1117/12.184819

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