TY - JOUR

T1 - Evaluating the Performance of Functionalized Carbon Structures with Integrated Optical Fiber Sensors under Practical Conditions

AU - Bremer, Kort

AU - Alwis, Lourdes S.M.

AU - Weigand, Frank

AU - Kuhne, Michael

AU - Zheng, Yulong

AU - Krüger, Marco

AU - Helbig, Reinhard

AU - Roth, Bernhard

N1 - Funding Information: Funding: This research was funded by the Bundesministerium fuer Bildung und Forschung (BMBF) within Grant Number 03ZZ0345 (Carbon Concrete Composite (C3)). Funding Information: Acknowledgments: The authors acknowledge support of M.-Barbara Schaller and Robby Scholz from the company Gesellschaft für Geomechanik und Baumesstechnik mbH (GGB).

PY - 2018/11

Y1 - 2018/11

N2 - An Optical Frequency Domain Reflectometry (OFDR) based fiber optic sensor scheme "embedded" in concrete for the purpose of structural health monitoring (SHM) of carbon concrete composites (C³) is presented. The design, while strengthening the concrete structure, also aims to monitor common SHM parameters such as strain and cracks. This was achieved by weaving the carbon fiber together with optical fiber, based on a specialized technique that uses an embroidery setup where both the carbon and optical fiber are woven on a water dissolvable polymer substrate. The performance of the sensing scheme was characterized in-situ utilizing the OFDR based technique and the results presented. The sensors embedded on a custom made concrete block were subjected to varying strain via a three point bending test to destruction and the results discussed. The intended dual-achievement of the scheme thus proposed in SHM and strengthening the C³ is demonstrated. The suitability of the OFDR scheme for C³ is combined with a fibre Bragg grating (FBG)-based approach, and discussed in detail.

AB - An Optical Frequency Domain Reflectometry (OFDR) based fiber optic sensor scheme "embedded" in concrete for the purpose of structural health monitoring (SHM) of carbon concrete composites (C³) is presented. The design, while strengthening the concrete structure, also aims to monitor common SHM parameters such as strain and cracks. This was achieved by weaving the carbon fiber together with optical fiber, based on a specialized technique that uses an embroidery setup where both the carbon and optical fiber are woven on a water dissolvable polymer substrate. The performance of the sensing scheme was characterized in-situ utilizing the OFDR based technique and the results presented. The sensors embedded on a custom made concrete block were subjected to varying strain via a three point bending test to destruction and the results discussed. The intended dual-achievement of the scheme thus proposed in SHM and strengthening the C³ is demonstrated. The suitability of the OFDR scheme for C³ is combined with a fibre Bragg grating (FBG)-based approach, and discussed in detail.

KW - Carbon concrete composite

KW - Fibre Bragg grating

KW - Optical frequency domain reflectometry

KW - Strain measurement

KW - Structural health monitoring

UR - http://www.scopus.com/inward/record.url?scp=85056621194&partnerID=8YFLogxK

U2 - 10.3390/s18113923

DO - 10.3390/s18113923

M3 - Article

C2 - 30441772

AN - SCOPUS:85056621194

VL - 18

JO - Sensors

JF - Sensors

SN - 1424-8220

IS - 11

M1 - 3923

ER -