Szczegóły

Tytuł artykułu

A novel fibre Bragg grating curvature sensor for structure deformation monitoring

Tytuł czasopisma

Metrology and Measurement Systems

Wolumin

vol. 25

Numer

No 3

Autorzy publikacji

Słowa kluczowe

fibre Bragg gratings ; curvature sensor ; large structure parts ; deformation monitoring

Wydział PAN

Nauki Techniczne

Zakres

577-587

Abstrakt

Real-time monitoring of deformation of large structure parts is of great significance and the deformation

of such structure parts is often accompanied with the change of curvature. The curvature can be obtained

by measuring changes of strain, surface curve and modal displacement of the structure. However, many

factors are faced with difficulty in measurement and low sensitivity at a small deformation level. In order

to measure curvature in an effective way, a novel fibre Bragg grating (FBG) curvature sensor is proposed,

which aims at removing the deficiencies of traditional methods in low precision and narrow adjusting. The

sensor combines two FBGs with a specific structure of stainless steel elastomer. The elastomer can transfer

the strain of the structure part to the FBG and then the FBG measures the strain to obtain the curvature.

The performed simulation and experiment show that the sensor can effectively amplify the strain to the

FBG through the unique structure of the elastomer, and the accuracy of the sensor used in the experiment is

increased by 14% compared with that of the FBG used for direct measurement.

Wydawca

Polish Academy of Sciences Committee on Metrology and Scientific Instrumentation

Data

2018.10.01

Typ

Artykuły / Articles

Identyfikator

ISSN 0860-8229

DOI

10.24425/123899

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