2020
DOI: 10.5194/jsss-9-189-2020
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Comparison of different fiber coatings for distributed strain measurement in cementitious matrices

Abstract: Abstract. Distributed fiber optic strain measurement based on Rayleigh scattering has recently become increasingly popular in automotive and mechanical engineering for strain monitoring and in the construction industry, especially structural health monitoring. This technology enables the monitoring of strain along the entire fiber length. This article addresses integrating optical fibers of different coatings into the concrete matrix to measure the shrinkage deformations. However, previous studies do not give … Show more

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Cited by 15 publications
(25 citation statements)
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“…These intermediate layers are characterized by different bonding and mechanical properties which influence the results of the measurements. 3,10,[23][24][25] The most common coatings are polyimide, acrylate and nylon coatings, further also cables with steel or composite protective layers are available.…”
Section: Types Of Fibers and Adhesivesmentioning
confidence: 99%
“…These intermediate layers are characterized by different bonding and mechanical properties which influence the results of the measurements. 3,10,[23][24][25] The most common coatings are polyimide, acrylate and nylon coatings, further also cables with steel or composite protective layers are available.…”
Section: Types Of Fibers and Adhesivesmentioning
confidence: 99%
“…Eine eigens entwickelte Software wurde verwendet, um einerseits die Datenmengen zu reduzieren und andererseits die Informationen statistisch aufzubereiten [3, 11, 12]. Die Software approximiert mögliche Messfehler mittels des Interpolationsverfahrens nach Akima und fasst die Matrizen der einzelnen Lastniveaus entsprechend Gl.…”
Section: Versuchsergebnisseunclassified
“…Im Vergleich zu punktuell messenden Verfahren, wie Dehnungsmessstreifen (DMS), Wegaufnehmern (LVDT) oder Faser‐Bragg‐Gitter‐Sensoren (FBG), kann jeder Bereich der Messfaser zur Dehnungsmessung herangezogen werden, wodurch sich Dehnungsverläufe innerhalb der Messlänge abbilden lassen [10]. Die optische Faser lässt sich entweder auf das Bauteil aufkleben oder in dessen Baustoffmatrix integrieren [11, 12]. Damit kann die Faser nicht nur Belastungszustände infolge äußerer Lasten, sondern auch Verformungen durch Schwinden oder Quellen aufzeichnen, was unter anderem bei massiven Betonbauteilen von Bedeutung sein kann.…”
Section: Introductionunclassified
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“…Conventional single‐mode optical fibers can be used to construct measuring sensors. Different coatings enhance robustness but may have a negative influence on the measuring results, respectively, strain transfer losses 34 . In combination with an optical frequency domain reflectometer (OFDR 35 ), high spatial resolution measurements and simultaneously high sampling rates become possible.…”
Section: Fos In Reinforced Concrete Researchmentioning
confidence: 99%