Modelling non-uniform strain distributions in aerospace composites using fibre Bragg gratings

Aydin Rajabzadehdizaji; Roger M. Groves; Richard C. Hendriks; Richard Heusdens

doi:10.1117/12.2265376

Modelling non-uniform strain distributions in aerospace composites using fibre Bragg gratings

Aydin Rajabzadehdizaji, Roger M. Groves, Richard C. Hendriks, Richard Heusdens

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

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Abstract

In this paper the behaviour of fibre Bragg grating (FBG) sensors under non-uniform strain distributions was analysed. Using the fundamental matrix approach, the length of the FBG sensor was discretised, with each segment undergoing different strain values. FBG sensors that are embedded inside composites, also undergo such non-uniform strain distributions, when located in the vicinity of failures such as matrix cracks or delamination of layers. This non-uniform strain distribution was created in an experimental setup. Finite element analysis was used to analytically model the strain distribution along the FBG length. The measured FBG outputs were then compared to the simulated results. There was a high amplitude correlation between the results of the measured and the simulated reflection spectra with a maximum of 0.97 among all cases.

Original language	English
Title of host publication	Proceedings - 25th International Conference on Optical Fiber Sensors
Editors	Y. Chung, W. Jin, B. Lee, J. Canning, K. Nakamura, L. Yuan
Place of Publication	Bellingham, WA
Publisher	SPIE
Pages	1-4
Number of pages	4
ISBN (Electronic)	9781510610927
ISBN (Print)	9781510610910
DOIs	https://doi.org/10.1117/12.2265376
Publication status	Published - 2017
Event	25th International Conference on Optical Fiber Sensors - Jeju, Korea, Republic of Duration: 24 Apr 2017 → 28 Apr 2017 Conference number: 25 http://www.ofs-25.org/

Publication series

Name	Proceedings of SPIE
Volume	10323
ISSN (Electronic)	0277-786X

Conference

Conference	25th International Conference on Optical Fiber Sensors
Abbreviated title	OFS 2017
Country/Territory	Korea, Republic of
City	Jeju
Period	24/04/17 → 28/04/17
Internet address	http://www.ofs-25.org/

Keywords

FBG simulation
Fibre Bragg gratings
Fundamental matrix method
Non-uniform strain
Reflection spectra
Structural health monitoring (SHM)

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10.1117/12.2265376

103237TFinal published version, 358 KB

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Rajabzadehdizaji, A., Groves, R. M., Hendriks, R. C., & Heusdens, R. (2017). Modelling non-uniform strain distributions in aerospace composites using fibre Bragg gratings. In Y. Chung, W. Jin, B. Lee, J. Canning, K. Nakamura, & L. Yuan (Eds.), Proceedings - 25th International Conference on Optical Fiber Sensors (pp. 1-4). Article 103237T (Proceedings of SPIE; Vol. 10323). SPIE. https://doi.org/10.1117/12.2265376

Rajabzadehdizaji, Aydin ; Groves, Roger M. ; Hendriks, Richard C. et al. / Modelling non-uniform strain distributions in aerospace composites using fibre Bragg gratings. Proceedings - 25th International Conference on Optical Fiber Sensors. editor / Y. Chung ; W. Jin ; B. Lee ; J. Canning ; K. Nakamura ; L. Yuan. Bellingham, WA : SPIE, 2017. pp. 1-4 (Proceedings of SPIE).

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abstract = "In this paper the behaviour of fibre Bragg grating (FBG) sensors under non-uniform strain distributions was analysed. Using the fundamental matrix approach, the length of the FBG sensor was discretised, with each segment undergoing different strain values. FBG sensors that are embedded inside composites, also undergo such non-uniform strain distributions, when located in the vicinity of failures such as matrix cracks or delamination of layers. This non-uniform strain distribution was created in an experimental setup. Finite element analysis was used to analytically model the strain distribution along the FBG length. The measured FBG outputs were then compared to the simulated results. There was a high amplitude correlation between the results of the measured and the simulated reflection spectra with a maximum of 0.97 among all cases.",

keywords = "FBG simulation, Fibre Bragg gratings, Fundamental matrix method, Non-uniform strain, Reflection spectra, Structural health monitoring (SHM)",

author = "Aydin Rajabzadehdizaji and Groves, {Roger M.} and Hendriks, {Richard C.} and Richard Heusdens",

year = "2017",

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Rajabzadehdizaji, A, Groves, RM , Hendriks, RC & Heusdens, R 2017, Modelling non-uniform strain distributions in aerospace composites using fibre Bragg gratings. in Y Chung, W Jin, B Lee, J Canning, K Nakamura & L Yuan (eds), Proceedings - 25th International Conference on Optical Fiber Sensors., 103237T, Proceedings of SPIE, vol. 10323, SPIE, Bellingham, WA, pp. 1-4, 25th International Conference on Optical Fiber Sensors, Jeju, Korea, Republic of, 24/04/17. https://doi.org/10.1117/12.2265376

Modelling non-uniform strain distributions in aerospace composites using fibre Bragg gratings. / Rajabzadehdizaji, Aydin; Groves, Roger M.; Hendriks, Richard C. et al.
Proceedings - 25th International Conference on Optical Fiber Sensors. ed. / Y. Chung; W. Jin; B. Lee; J. Canning; K. Nakamura; L. Yuan. Bellingham, WA: SPIE, 2017. p. 1-4 103237T (Proceedings of SPIE; Vol. 10323).

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

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AU - Rajabzadehdizaji, Aydin

AU - Groves, Roger M.

AU - Hendriks, Richard C.

AU - Heusdens, Richard

N1 - Conference code: 25

PY - 2017

Y1 - 2017

N2 - In this paper the behaviour of fibre Bragg grating (FBG) sensors under non-uniform strain distributions was analysed. Using the fundamental matrix approach, the length of the FBG sensor was discretised, with each segment undergoing different strain values. FBG sensors that are embedded inside composites, also undergo such non-uniform strain distributions, when located in the vicinity of failures such as matrix cracks or delamination of layers. This non-uniform strain distribution was created in an experimental setup. Finite element analysis was used to analytically model the strain distribution along the FBG length. The measured FBG outputs were then compared to the simulated results. There was a high amplitude correlation between the results of the measured and the simulated reflection spectra with a maximum of 0.97 among all cases.

AB - In this paper the behaviour of fibre Bragg grating (FBG) sensors under non-uniform strain distributions was analysed. Using the fundamental matrix approach, the length of the FBG sensor was discretised, with each segment undergoing different strain values. FBG sensors that are embedded inside composites, also undergo such non-uniform strain distributions, when located in the vicinity of failures such as matrix cracks or delamination of layers. This non-uniform strain distribution was created in an experimental setup. Finite element analysis was used to analytically model the strain distribution along the FBG length. The measured FBG outputs were then compared to the simulated results. There was a high amplitude correlation between the results of the measured and the simulated reflection spectra with a maximum of 0.97 among all cases.

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KW - Non-uniform strain

KW - Reflection spectra

KW - Structural health monitoring (SHM)

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M3 - Conference contribution

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SN - 9781510610910

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EP - 4

BT - Proceedings - 25th International Conference on Optical Fiber Sensors

A2 - Chung, Y.

A2 - Jin, W.

A2 - Lee, B.

A2 - Canning, J.

A2 - Nakamura, K.

A2 - Yuan, L.

PB - SPIE

CY - Bellingham, WA

T2 - 25th International Conference on Optical Fiber Sensors

Y2 - 24 April 2017 through 28 April 2017

ER -

Rajabzadehdizaji A, Groves RM , Hendriks RC , Heusdens R. Modelling non-uniform strain distributions in aerospace composites using fibre Bragg gratings. In Chung Y, Jin W, Lee B, Canning J, Nakamura K, Yuan L, editors, Proceedings - 25th International Conference on Optical Fiber Sensors. Bellingham, WA: SPIE. 2017. p. 1-4. 103237T. (Proceedings of SPIE). doi: 10.1117/12.2265376

Modelling non-uniform strain distributions in aerospace composites using fibre Bragg gratings

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