Application of distributed optical measurements to structural concrete experiments
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Date
2017
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Conference Paper
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Abstract
This paper explores the combined application of digital image correlation (DIC) and high-resolution fibre optical (FO) measurements to structural concrete elements. These novel distributed optical instrumentation techniques allow measuring virtually continuously and without affecting the mechanical behaviour (i) displacements on the concrete surface and (ii) elastic as well as plastic strains in reinforcing bars, respectively. The results of an experimental study consisting of two reinforced panels subjected to diagonal tension show the ability of DIC to successfully detect complex crack patterns and their kinematics. The reinforcement strains recorded by FO correlate perfectly with the position and opening of the cracks. The results prove the great potential of DIC and FO to measure phenomena like bond, crack behaviour and shear transfer that hardly ever have been directly measured in detail until now. Transforming the large amount of collected data into useful structural information is an important challenge for these techniques.
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published
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SMAR 2017 Proceedings
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159
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ETH Zurich
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Fourth Conference on Smart Monitoring, Assessment and Rehabilitation of Civil Structures (SMAR 2017)
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09469 - Kaufmann, Walter / Kaufmann, Walter
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Is cited by: https://doi.org/10.3929/ethz-b-000602335