Fiber Bragg gratings embedded inside glued laminated timbers: an overview and evaluation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F16%3A00242865" target="_blank" >RIV/68407700:21110/16:00242865 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21720/16:00242865

Výsledek na webu

<a href="http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=2520251" target="_blank" >http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=2520251</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.2227902" target="_blank" >10.1117/12.2227902</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Fiber Bragg gratings embedded inside glued laminated timbers: an overview and evaluation

Popis výsledku v původním jazyce

In this paper, the fiber Bragg gratings are investigated in the context of sensing of deformation inside a sample of a glued laminated timber. For this purpose, a fiber with acrylate recoated Bragg grating is placed and glued between the timber laminates. Since there are still some open questions leading now, one of the goals is to specify, if the sensor that is embedded inside the timber can operate as the sensor that is not. Therefore, the strain of the not embedded sensor is numerically investigated in the first step as the change in the grating period. In order to calculate the Bragg wavelength associated to the grating period, the light propagation through the fiber has been modeled by rigorous and versatile eigen mode expansion method. Based on the simulation result, the authors are able to determine the sample strain under the mechanical load by measuring the reflected Bragg wavelength. Moreover, the measured strain is compared with the strain analytically obtained from the known force applied on the sample. The both strains are in good agreement.

Název v anglickém jazyce

Fiber Bragg gratings embedded inside glued laminated timbers: an overview and evaluation

Popis výsledku anglicky

In this paper, the fiber Bragg gratings are investigated in the context of sensing of deformation inside a sample of a glued laminated timber. For this purpose, a fiber with acrylate recoated Bragg grating is placed and glued between the timber laminates. Since there are still some open questions leading now, one of the goals is to specify, if the sensor that is embedded inside the timber can operate as the sensor that is not. Therefore, the strain of the not embedded sensor is numerically investigated in the first step as the change in the grating period. In order to calculate the Bragg wavelength associated to the grating period, the light propagation through the fiber has been modeled by rigorous and versatile eigen mode expansion method. Based on the simulation result, the authors are able to determine the sample strain under the mechanical load by measuring the reflected Bragg wavelength. Moreover, the measured strain is compared with the strain analytically obtained from the known force applied on the sample. The both strains are in good agreement.

Druh

D - Stať ve sborníku

CEP obor

JB - Senzory, čidla, měření a regulace

OECD FORD obor

—

Projekt

<a href="/cs/project/TE02000202" target="_blank" >TE02000202: Pokročilé senzory a metody zpracování senzorových dat</a><br>

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

Optical Sensing and Detection IV Proceedings

ISBN

978-1-5106-0144-4

ISSN

0277-786X

e-ISSN

—

Počet stran výsledku

6

Strana od-do

—

Název nakladatele

SPIE

Místo vydání

Bellingham (stát Washington)

Místo konání akce

Brussels

Datum konání akce

3. 4. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000387732400068