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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 19 — Jul. 1, 2013
  • pp: 4631–4639

Fiber Bragg grating-based plane strain monitoring of aerostat envelope structures

Ji-an Chen, Di Huang, Hai-tao Zhao, Quan-bao Wang, Ye Qiu, and Deng-ping Duan  »View Author Affiliations


Applied Optics, Vol. 52, Issue 19, pp. 4631-4639 (2013)
http://dx.doi.org/10.1364/AO.52.004631


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Abstract

A theoretical analysis of fiber Bragg grating (FBG)-based plane strain monitoring of aerostat envelope structures is presented. Plane strain analysis of FBG-based aerostat envelope structures is much more complex than the case along the axis of the optical fiber because the effect of transverse stress on the FBG should be taken into consideration. To achieve accurate strain measurement of the aerostat envelope, a theoretical model is set up by using two perpendicular fibers in the monitoring. An analytical formula that evaluates the relationship between the strain measured by FBG sensors and the real one in the aerostat envelope is established. On the other hand, the real strain of aerostat envelope strain is affected by two unknown parameters, axial transfer rate KL and the radial transfer rate KR. An equation is derived to calculate the axial transfer rate KL. Then, the finite element method results show that KR is a very small value, but it cannot be ignored in accurate measurement. This paper would lay a theoretical groundwork for the research and design of FBG sensors in the structural health monitoring of aerostat envelope structures.

© 2013 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(130.6010) Integrated optics : Sensors
(220.0220) Optical design and fabrication : Optical design and fabrication

ToC Category:
Integrated Optics

History
Original Manuscript: March 18, 2013
Revised Manuscript: May 28, 2013
Manuscript Accepted: June 2, 2013
Published: June 26, 2013

Citation
Ji-an Chen, Di Huang, Hai-tao Zhao, Quan-bao Wang, Ye Qiu, and Deng-ping Duan, "Fiber Bragg grating-based plane strain monitoring of aerostat envelope structures," Appl. Opt. 52, 4631-4639 (2013)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-52-19-4631

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