Details
| Original language | English |
|---|---|
| Article number | 345 |
| Number of pages | 12 |
| Journal | Sensors |
| Volume | 17 |
| Issue number | 2 |
| Publication status | Published - 10 Feb 2017 |
Abstract
Optical fiber-based sensors “embedded” in functionalized carbon structures (FCSs) and textile net structures (TNSs) based on alkaline-resistant glass are introduced for the purpose of structural health monitoring (SHM) of concrete-based structures. The design aims to monitor common SHM parameters such as strain and cracks while at the same time acting as a structural strengthening mechanism. The sensor performances of the two systems are characterized in situ using Mach-Zehnder interferometric (MZI) and optical attenuation measurement techniques, respectively. For this purpose, different FCS samples were subjected to varying elongation using a tensile testing machine by carefully incrementing the applied force, and good correlation between the applied force and measured length change was observed. For crack detection, the functionalized TNSs were embedded into a concrete block which was then exposed to varying load using the three-point flexural test until destruction. Promising results were observed, identifying that the location of the crack can be determined using the conventional optical time domain reflectometry (OTDR) technique. The embedded sensors thus evaluated show the value of the dual achievement of the schemes proposed in obtaining strain/crack measurement while being utilized as strengthening agents as well.
Keywords
- Crack detection, Fiber optic sensor, Functionalized carbon structure, Strain sensing, Structural health monitoring
ASJC Scopus subject areas
- Chemistry(all)
- Analytical Chemistry
- Biochemistry, Genetics and Molecular Biology(all)
- Biochemistry
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
- Physics and Astronomy(all)
- Instrumentation
- Engineering(all)
- Electrical and Electronic Engineering
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In: Sensors, Vol. 17, No. 2, 345, 10.02.2017.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Structural Health Monitoring Using Textile Reinforcement Structures with Integrated Optical Fiber Sensors
AU - Bremer, Kort
AU - Weigand, Frank
AU - Zheng, Yulong
AU - Alwis, Lourdes Shanika
AU - Helbig, Reinhard
AU - Roth, Bernhard
N1 - Funding information: The authors acknowledge the support of the Bundesministerium fuer Bildung und Forschung (BMBF) within Grant Number 03ZZ0345. The publication of this article was funded by the Open Access fund of Leibniz Universität Hannover. L. Alwis would like to acknowledge the support from Edinburgh Napier University Research Funding competition award.
PY - 2017/2/10
Y1 - 2017/2/10
N2 - Optical fiber-based sensors “embedded” in functionalized carbon structures (FCSs) and textile net structures (TNSs) based on alkaline-resistant glass are introduced for the purpose of structural health monitoring (SHM) of concrete-based structures. The design aims to monitor common SHM parameters such as strain and cracks while at the same time acting as a structural strengthening mechanism. The sensor performances of the two systems are characterized in situ using Mach-Zehnder interferometric (MZI) and optical attenuation measurement techniques, respectively. For this purpose, different FCS samples were subjected to varying elongation using a tensile testing machine by carefully incrementing the applied force, and good correlation between the applied force and measured length change was observed. For crack detection, the functionalized TNSs were embedded into a concrete block which was then exposed to varying load using the three-point flexural test until destruction. Promising results were observed, identifying that the location of the crack can be determined using the conventional optical time domain reflectometry (OTDR) technique. The embedded sensors thus evaluated show the value of the dual achievement of the schemes proposed in obtaining strain/crack measurement while being utilized as strengthening agents as well.
AB - Optical fiber-based sensors “embedded” in functionalized carbon structures (FCSs) and textile net structures (TNSs) based on alkaline-resistant glass are introduced for the purpose of structural health monitoring (SHM) of concrete-based structures. The design aims to monitor common SHM parameters such as strain and cracks while at the same time acting as a structural strengthening mechanism. The sensor performances of the two systems are characterized in situ using Mach-Zehnder interferometric (MZI) and optical attenuation measurement techniques, respectively. For this purpose, different FCS samples were subjected to varying elongation using a tensile testing machine by carefully incrementing the applied force, and good correlation between the applied force and measured length change was observed. For crack detection, the functionalized TNSs were embedded into a concrete block which was then exposed to varying load using the three-point flexural test until destruction. Promising results were observed, identifying that the location of the crack can be determined using the conventional optical time domain reflectometry (OTDR) technique. The embedded sensors thus evaluated show the value of the dual achievement of the schemes proposed in obtaining strain/crack measurement while being utilized as strengthening agents as well.
KW - Crack detection
KW - Fiber optic sensor
KW - Functionalized carbon structure
KW - Strain sensing
KW - Structural health monitoring
UR - http://www.scopus.com/inward/record.url?scp=85012293428&partnerID=8YFLogxK
U2 - 10.3390/s17020345
DO - 10.3390/s17020345
M3 - Article
C2 - 28208636
AN - SCOPUS:85012293428
VL - 17
JO - Sensors
JF - Sensors
SN - 1424-8220
IS - 2
M1 - 345
ER -