Signal-to-Noise Ratio Evaluation of Fibre Bragg Gratings for Dynamic Strain Sensing at Elevated Temperatures in a Liquid Metal Environment

Research output: Contribution to journalArticle

Standard

Signal-to-Noise Ratio Evaluation of Fibre Bragg Gratings for Dynamic Strain Sensing at Elevated Temperatures in a Liquid Metal Environment. / De Pauw, Ben; Lamberti, A.; Rezayat, A.; Ertveldt, J.; Vanlanduit, Steve; Van Tichelen, Katrien; Geernaert, Thomas; Berghmans, Francis.

In: Journal of Lightwave Technology, Vol. 33, No. 12, 15.06.2015, p. 2378-2385.

Research output: Contribution to journalArticle

Harvard

De Pauw, B, Lamberti, A, Rezayat, A, Ertveldt, J, Vanlanduit, S, Van Tichelen, K, Geernaert, T & Berghmans, F 2015, 'Signal-to-Noise Ratio Evaluation of Fibre Bragg Gratings for Dynamic Strain Sensing at Elevated Temperatures in a Liquid Metal Environment', Journal of Lightwave Technology, vol. 33, no. 12, pp. 2378-2385. https://doi.org/10.1109/JLT.2014.2377371

APA

De Pauw, B., Lamberti, A., Rezayat, A., Ertveldt, J., Vanlanduit, S., Van Tichelen, K., ... Berghmans, F. (2015). Signal-to-Noise Ratio Evaluation of Fibre Bragg Gratings for Dynamic Strain Sensing at Elevated Temperatures in a Liquid Metal Environment. Journal of Lightwave Technology, 33(12), 2378-2385. https://doi.org/10.1109/JLT.2014.2377371

Author

De Pauw, Ben ; Lamberti, A. ; Rezayat, A. ; Ertveldt, J. ; Vanlanduit, Steve ; Van Tichelen, Katrien ; Geernaert, Thomas ; Berghmans, Francis. / Signal-to-Noise Ratio Evaluation of Fibre Bragg Gratings for Dynamic Strain Sensing at Elevated Temperatures in a Liquid Metal Environment. In: Journal of Lightwave Technology. 2015 ; Vol. 33, No. 12. pp. 2378-2385.

Bibtex - Download

@article{92ffaca66aa94a7d82229e89ff1a73a9,
title = "Signal-to-Noise Ratio Evaluation of Fibre Bragg Gratings for Dynamic Strain Sensing at Elevated Temperatures in a Liquid Metal Environment",
abstract = "Vibration measurements of the fuel assembly of a nuclear reactor are a very useful tool to determine the health and lifetime of the reactor core. The importance of these measurements is exacerbated in the new generation of heavy liquid metal reactors, where the fuel assembly is exposed to a corrosive molten metal coolant at 300 °C and where the space between the individual fuel pins is limited to a few millimeters. In this paper, we consider fibre Bragg gratings as potential candidates for carrying out fuel pin vibration measurements in such an environment. We describe a dedicated method to integrate fibre Bragg gratings in a fuel pin, and we subject this pin to conditions close to those encountered in a real heavy liquid metal reactor. More specifically, we report on the performance of draw tower gratings used as a vibration sensor when the fuel pins are immersed in heavy liquid metal at 300 °C for up to 700 h. The performance evaluation is based on monitoring the signal-to-noise ratio of the grating's spectral response as a function of time. We show that accurate detection of the Bragg peak becomes very challenging after 400 h of exposure. Additionally, we succeed to extend the useful lifetime with a factor of two by using an appropriate integration of the fiber in the fuel pin and by using an alternate peak detection algorithm.",
keywords = "fibre bragg gratings, liquid metal, strain",
author = "{De Pauw}, Ben and A. Lamberti and A. Rezayat and J. Ertveldt and Steve Vanlanduit and {Van Tichelen}, Katrien and Thomas Geernaert and Francis Berghmans",
note = "SCORE=10",
year = "2015",
month = "6",
day = "15",
doi = "10.1109/JLT.2014.2377371",
language = "English",
volume = "33",
pages = "2378--2385",
journal = "Journal of Lightwave Technology",
issn = "0733-8724",
publisher = "OSA - The Optical Society of America",
number = "12",

}

RIS - Download

TY - JOUR

T1 - Signal-to-Noise Ratio Evaluation of Fibre Bragg Gratings for Dynamic Strain Sensing at Elevated Temperatures in a Liquid Metal Environment

AU - De Pauw, Ben

AU - Lamberti, A.

AU - Rezayat, A.

AU - Ertveldt, J.

AU - Vanlanduit, Steve

AU - Van Tichelen, Katrien

AU - Geernaert, Thomas

AU - Berghmans, Francis

N1 - SCORE=10

PY - 2015/6/15

Y1 - 2015/6/15

N2 - Vibration measurements of the fuel assembly of a nuclear reactor are a very useful tool to determine the health and lifetime of the reactor core. The importance of these measurements is exacerbated in the new generation of heavy liquid metal reactors, where the fuel assembly is exposed to a corrosive molten metal coolant at 300 °C and where the space between the individual fuel pins is limited to a few millimeters. In this paper, we consider fibre Bragg gratings as potential candidates for carrying out fuel pin vibration measurements in such an environment. We describe a dedicated method to integrate fibre Bragg gratings in a fuel pin, and we subject this pin to conditions close to those encountered in a real heavy liquid metal reactor. More specifically, we report on the performance of draw tower gratings used as a vibration sensor when the fuel pins are immersed in heavy liquid metal at 300 °C for up to 700 h. The performance evaluation is based on monitoring the signal-to-noise ratio of the grating's spectral response as a function of time. We show that accurate detection of the Bragg peak becomes very challenging after 400 h of exposure. Additionally, we succeed to extend the useful lifetime with a factor of two by using an appropriate integration of the fiber in the fuel pin and by using an alternate peak detection algorithm.

AB - Vibration measurements of the fuel assembly of a nuclear reactor are a very useful tool to determine the health and lifetime of the reactor core. The importance of these measurements is exacerbated in the new generation of heavy liquid metal reactors, where the fuel assembly is exposed to a corrosive molten metal coolant at 300 °C and where the space between the individual fuel pins is limited to a few millimeters. In this paper, we consider fibre Bragg gratings as potential candidates for carrying out fuel pin vibration measurements in such an environment. We describe a dedicated method to integrate fibre Bragg gratings in a fuel pin, and we subject this pin to conditions close to those encountered in a real heavy liquid metal reactor. More specifically, we report on the performance of draw tower gratings used as a vibration sensor when the fuel pins are immersed in heavy liquid metal at 300 °C for up to 700 h. The performance evaluation is based on monitoring the signal-to-noise ratio of the grating's spectral response as a function of time. We show that accurate detection of the Bragg peak becomes very challenging after 400 h of exposure. Additionally, we succeed to extend the useful lifetime with a factor of two by using an appropriate integration of the fiber in the fuel pin and by using an alternate peak detection algorithm.

KW - fibre bragg gratings

KW - liquid metal

KW - strain

UR - http://ecm.sckcen.be/OTCS/llisapi.dll/open/12409313

U2 - 10.1109/JLT.2014.2377371

DO - 10.1109/JLT.2014.2377371

M3 - Article

VL - 33

SP - 2378

EP - 2385

JO - Journal of Lightwave Technology

JF - Journal of Lightwave Technology

SN - 0733-8724

IS - 12

ER -

ID: 1003580