2023
DOI: 10.1016/j.measurement.2023.113480
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Strain, crack, stress and shape diagnostics of new and existing post-tensioned structures through distributed fibre optic sensors

Bartosz Piątek,
Tomasz Howiacki,
Maciej Kulpa
et al.
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Cited by 16 publications
(2 citation statements)
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“…Because optical fiber slippage may occur, the strain peak is not always large enough to be identified as a crack. Therefore, the algorithms related to correct detection and crack width estimation in this method are constantly being refined [49][50][51]. Because optical fiber slippage may occur, the strain peak is not always large enough to be identified as a crack.…”
Section: Fiber Optic Composite Sensorsmentioning
confidence: 99%
“…Because optical fiber slippage may occur, the strain peak is not always large enough to be identified as a crack. Therefore, the algorithms related to correct detection and crack width estimation in this method are constantly being refined [49][50][51]. Because optical fiber slippage may occur, the strain peak is not always large enough to be identified as a crack.…”
Section: Fiber Optic Composite Sensorsmentioning
confidence: 99%
“…Weitere DFOS sind beispielsweise im relevanten Querkraftbereich von FT 1.3, am Spannanker von FT 2.1, in den Stützenanschlüssen und in der Ortbetonergänzung angeordnet, sodass diese mit einer Gesamtlänge von knapp 1 km ein künstliches Nervensystem der Brücke darstellen (Bild 4). Eine Besonderheit stellt der eingesetzte 3D-DFOS dar, bei dem vier Glasfasern in einen Querschnitt eingearbeitet werden[28]. Aus den Dehnungsdifferenzen und dem definierten Abstand der einzelnen Fasern kann die Krümmung und durch Integration die Änderung der Verformungsfigur sowohl in vertikaler als auch in horizontaler Richtung bestimmt werden.…”
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