Evaluation of a new method for metal embedding of optical fibres for high temperature sensing purposes

Stefan Sandlin, Liisa Heikinheimo

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

6 Citations (Scopus)

Abstract

The degradation of high temperature plant components is controlled by many phenomena like oxidation, high temperature corrosion, creep, wear etc. For practically all kinds of degradation the rate increases with increasing temperature. This fact makes the temperature a very important parameter in component life management. A precise knowledge of the spatial distribution and temporal variations in the temperature field in high temperature components would greatly promote the application of modern life management as well as assist in process control. Fibre optic sensing inherently provides the possibility sensor networks, either as fully distributed sensing (the whole length of the fibre acts as sensor) or as quasi-distributed (certain elements along the fibre act as sensors). This article describes a method for metal embedding of optical fibres for sensing purposes. Two metal embedded in-fibre Bragg-gratings were thermally cycled between hold temperatures of 502°C, 527°C and 552°C for more than five months and the results are presented.
Original languageEnglish
Title of host publicationBALTICA V
Subtitle of host publicationCondition and Life Management for Power Plants
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Pages547-558
Volume2
ISBN (Electronic)951-38-5717-4
ISBN (Print)951-38-5716-6
Publication statusPublished - 2001
MoE publication typeA4 Article in a conference publication
EventBALTICA V - Condition and Life Management for Power Plants - Porvoo, Finland
Duration: 6 Jun 20018 Jun 2001

Publication series

NameVTT Symposium
PublisherVTT
Number212
ISSN (Print)0357-9387
ISSN (Electronic)1455-0873

Conference

ConferenceBALTICA V - Condition and Life Management for Power Plants
Abbreviated titleBaltica V
CountryFinland
CityPorvoo
Period6/06/018/06/01

Fingerprint

Optical fibers
Metals
Temperature
Degradation
Thermooxidation
Fibers
Sensors
Fiber Bragg gratings
Spatial distribution
Fiber optics
Sensor networks
Process control
Creep
Temperature distribution
Wear of materials
Corrosion

Cite this

Sandlin, S., & Heikinheimo, L. (2001). Evaluation of a new method for metal embedding of optical fibres for high temperature sensing purposes. In BALTICA V: Condition and Life Management for Power Plants (Vol. 2, pp. 547-558). Espoo: VTT Technical Research Centre of Finland. VTT Symposium, No. 212
Sandlin, Stefan ; Heikinheimo, Liisa. / Evaluation of a new method for metal embedding of optical fibres for high temperature sensing purposes. BALTICA V: Condition and Life Management for Power Plants. Vol. 2 Espoo : VTT Technical Research Centre of Finland, 2001. pp. 547-558 (VTT Symposium; No. 212).
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abstract = "The degradation of high temperature plant components is controlled by many phenomena like oxidation, high temperature corrosion, creep, wear etc. For practically all kinds of degradation the rate increases with increasing temperature. This fact makes the temperature a very important parameter in component life management. A precise knowledge of the spatial distribution and temporal variations in the temperature field in high temperature components would greatly promote the application of modern life management as well as assist in process control. Fibre optic sensing inherently provides the possibility sensor networks, either as fully distributed sensing (the whole length of the fibre acts as sensor) or as quasi-distributed (certain elements along the fibre act as sensors). This article describes a method for metal embedding of optical fibres for sensing purposes. Two metal embedded in-fibre Bragg-gratings were thermally cycled between hold temperatures of 502°C, 527°C and 552°C for more than five months and the results are presented.",
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Sandlin, S & Heikinheimo, L 2001, Evaluation of a new method for metal embedding of optical fibres for high temperature sensing purposes. in BALTICA V: Condition and Life Management for Power Plants. vol. 2, VTT Technical Research Centre of Finland, Espoo, VTT Symposium, no. 212, pp. 547-558, BALTICA V - Condition and Life Management for Power Plants, Porvoo, Finland, 6/06/01.

Evaluation of a new method for metal embedding of optical fibres for high temperature sensing purposes. / Sandlin, Stefan; Heikinheimo, Liisa.

BALTICA V: Condition and Life Management for Power Plants. Vol. 2 Espoo : VTT Technical Research Centre of Finland, 2001. p. 547-558 (VTT Symposium; No. 212).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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AB - The degradation of high temperature plant components is controlled by many phenomena like oxidation, high temperature corrosion, creep, wear etc. For practically all kinds of degradation the rate increases with increasing temperature. This fact makes the temperature a very important parameter in component life management. A precise knowledge of the spatial distribution and temporal variations in the temperature field in high temperature components would greatly promote the application of modern life management as well as assist in process control. Fibre optic sensing inherently provides the possibility sensor networks, either as fully distributed sensing (the whole length of the fibre acts as sensor) or as quasi-distributed (certain elements along the fibre act as sensors). This article describes a method for metal embedding of optical fibres for sensing purposes. Two metal embedded in-fibre Bragg-gratings were thermally cycled between hold temperatures of 502°C, 527°C and 552°C for more than five months and the results are presented.

M3 - Conference article in proceedings

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Sandlin S, Heikinheimo L. Evaluation of a new method for metal embedding of optical fibres for high temperature sensing purposes. In BALTICA V: Condition and Life Management for Power Plants. Vol. 2. Espoo: VTT Technical Research Centre of Finland. 2001. p. 547-558. (VTT Symposium; No. 212).