Optical Fibre Sensors as a Potential Solution for Monitoring Wooden Structures

Kód výsledku v IS VaVaI

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Nalezeny alternativní kódy

RIV/68407700:21720/16:00301491

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Optical Fibre Sensors as a Potential Solution for Monitoring Wooden Structures

Popis výsledku v původním jazyce

This paper deals with a new technique for monitoring timber constructions. The technique is based on an idea that strain measuring fibre Bragg gratings can be embedded during the fabrication inside elements made from a glued laminated timber. In order to verify the idea, the load by a hydraulic cylinder have been applied on the timber samples, while the strains of optical sensors operating concurrently with the typical strain gauges are being measured. The measured data from electrical and optical sensors are compared with an analytically obtained data. The measurement verified that optical fibre sensors embedded between the wooden lamellae can work with relative error less than 10 %, if the analytical approach is taken as the reference. Moreover, loading the samples at different temperatures in the climatic chamber verified that the effect of environmental changes during the measurement can be well compensated by the two sensors operating contradictory. In the last part of the paper, a Java application is described for continuous monitoring of load-bearing elements in the buildings. The application evaluates measured spectrum given by fibre-optic sensors and consequently calculates mechanical strain. Based on the evaluation, the application is able to turn on an alarm.

Název v anglickém jazyce

Optical Fibre Sensors as a Potential Solution for Monitoring Wooden Structures

Popis výsledku anglicky

This paper deals with a new technique for monitoring timber constructions. The technique is based on an idea that strain measuring fibre Bragg gratings can be embedded during the fabrication inside elements made from a glued laminated timber. In order to verify the idea, the load by a hydraulic cylinder have been applied on the timber samples, while the strains of optical sensors operating concurrently with the typical strain gauges are being measured. The measured data from electrical and optical sensors are compared with an analytically obtained data. The measurement verified that optical fibre sensors embedded between the wooden lamellae can work with relative error less than 10 %, if the analytical approach is taken as the reference. Moreover, loading the samples at different temperatures in the climatic chamber verified that the effect of environmental changes during the measurement can be well compensated by the two sensors operating contradictory. In the last part of the paper, a Java application is described for continuous monitoring of load-bearing elements in the buildings. The application evaluates measured spectrum given by fibre-optic sensors and consequently calculates mechanical strain. Based on the evaluation, the application is able to turn on an alarm.

Druh

D - Stať ve sborníku

CEP obor

JB - Senzory, čidla, měření a regulace

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

WCTE 2016 CD-ROM Proceedings

ISBN

978-3-903039-00-1

ISSN

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e-ISSN

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Počet stran výsledku

8

Strana od-do

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Název nakladatele

Vienna University of Technology

Místo vydání

Wien

Místo konání akce

Vienna

Datum konání akce

22. 8. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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