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Feasibility of integrated optical fibre sensors for condition monitoring of composite structures, part I : comparison of Bragg-sensors and strain gauges

Wim De Waele (UGent) , Joris Degrieck (UGent) , Wim Moerman (UGent) , Luc Taerwe (UGent) and Patrick De Baets (UGent)
(2003) INSIGHT. 45(4). p.266-271
Author
Organization
Abstract
This first paper discusses the possibility of continuously monitoring the mechanical behaviour of composite structures by means of optical fibre sensors. In the introduction, some inherent advantages of optical fibre sensors, which make them ideally suited for this purpose, art discussed. Optical fibres with an intracore Bragg-grating were chosen as an alternative for classical electrical-resistance strain gauges. The main principles of Bragg-sensors are briefly discussed and some previously obtained results are summarized. Filament-wound pressure vessels have been used as a representative composite structural element. These vessels have been equipped with surface-mounted Bragg-sensors and classical strain gauges. Comparative measurements between these two sensor types art, discussed in this first of two papers. The results of these experiments lead to the conclusion that optical fibre Bragg-sensors are more reliable than classical strain gauges. In the second paper fully monitored' experiments will be discussed: strain is monitored by means of Bragg-sensors and damage is monitored through acoustic emission detection. With additional research effort, and provided that adequate tools for the simulation of a degrading fibre-reinforced structure become available, permanent condition monitoring of critical structures could become realistic in the near future. The Bragg-sensor type optical fibre sensor can be considered a key instrument for monitoring applications of composite structures providing that they become available at economically interesting prices.
Keywords
GRATING STRAIN, PRESSURE-VESSELS, FIBER SENSORS, BRIDGE, SYSTEM

Citation

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MLA
De Waele, Wim, Joris Degrieck, Wim Moerman, et al. “Feasibility of Integrated Optical Fibre Sensors for Condition Monitoring of Composite Structures, Part I : Comparison of Bragg-sensors and Strain Gauges.” INSIGHT 45.4 (2003): 266–271. Print.
APA
De Waele, Wim, Degrieck, J., Moerman, W., Taerwe, L., & De Baets, P. (2003). Feasibility of integrated optical fibre sensors for condition monitoring of composite structures, part I : comparison of Bragg-sensors and strain gauges. INSIGHT, 45(4), 266–271.
Chicago author-date
De Waele, Wim, Joris Degrieck, Wim Moerman, Luc Taerwe, and Patrick De Baets. 2003. “Feasibility of Integrated Optical Fibre Sensors for Condition Monitoring of Composite Structures, Part I : Comparison of Bragg-sensors and Strain Gauges.” Insight 45 (4): 266–271.
Chicago author-date (all authors)
De Waele, Wim, Joris Degrieck, Wim Moerman, Luc Taerwe, and Patrick De Baets. 2003. “Feasibility of Integrated Optical Fibre Sensors for Condition Monitoring of Composite Structures, Part I : Comparison of Bragg-sensors and Strain Gauges.” Insight 45 (4): 266–271.
Vancouver
1.
De Waele W, Degrieck J, Moerman W, Taerwe L, De Baets P. Feasibility of integrated optical fibre sensors for condition monitoring of composite structures, part I : comparison of Bragg-sensors and strain gauges. INSIGHT. 2003;45(4):266–71.
IEEE
[1]
W. De Waele, J. Degrieck, W. Moerman, L. Taerwe, and P. De Baets, “Feasibility of integrated optical fibre sensors for condition monitoring of composite structures, part I : comparison of Bragg-sensors and strain gauges,” INSIGHT, vol. 45, no. 4, pp. 266–271, 2003.
@article{285436,
  abstract     = {This first paper discusses the possibility of continuously monitoring the mechanical behaviour of composite structures by means of optical fibre sensors. In the introduction, some inherent advantages of optical fibre sensors, which make them ideally suited for this purpose, art discussed. Optical fibres with an intracore Bragg-grating were chosen as an alternative for classical electrical-resistance strain gauges. The main principles of Bragg-sensors are briefly discussed and some previously obtained results are summarized. Filament-wound pressure vessels have been used as a representative composite structural element. These vessels have been equipped with surface-mounted Bragg-sensors and classical strain gauges. Comparative measurements between these two sensor types art, discussed in this first of two papers. The results of these experiments lead to the conclusion that optical fibre Bragg-sensors are more reliable than classical strain gauges. In the second paper fully monitored' experiments will be discussed: strain is monitored by means of Bragg-sensors and damage is monitored through acoustic emission detection. With additional research effort, and provided that adequate tools for the simulation of a degrading fibre-reinforced structure become available, permanent condition monitoring of critical structures could become realistic in the near future. The Bragg-sensor type optical fibre sensor can be considered a key instrument for monitoring applications of composite structures providing that they become available at economically interesting prices.},
  author       = {De Waele, Wim and Degrieck, Joris and Moerman, Wim and Taerwe, Luc and De Baets, Patrick},
  issn         = {1354-2575},
  journal      = {INSIGHT},
  keywords     = {GRATING STRAIN,PRESSURE-VESSELS,FIBER SENSORS,BRIDGE,SYSTEM},
  language     = {eng},
  number       = {4},
  pages        = {266--271},
  title        = {Feasibility of integrated optical fibre sensors for condition monitoring of composite structures, part I : comparison of Bragg-sensors and strain gauges},
  volume       = {45},
  year         = {2003},
}

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