Optical Fiber Sensors for Aircraft Structural Health Monitoring

Sensors

Iker Garc໚²  Joseba Zubia²  Gaizka Durana²  Gotzon Aldabaldetreku²  Mar໚ Asunción Illarramendi¹  Joel Villatoro² 

[1] Department of Applied Physics I, E.T.S.I. of Bilbao, University of the Basque Country UPV/EHU, Alda. Urquijo s/n Bilbao 48013, Spain; E-Mail:;Department of Communications Engineering, E.T.S.I. of Bilbao, University of the Basque Country UPV/EHU, Alda. Urquijo s/n Bilbao 48013, Spain; E-Mails:

关键词: structural health monitoring;    optical fiber sensors;    fiber Bragg grating;    long period grating;    turbine condition monitoring;   

DOI  :  10.3390/s150715494

来源: mdpi

【 摘 要 】

Aircraft structures require periodic and scheduled inspection and maintenance operations due to their special operating conditions and the principles of design employed to develop them. Therefore, structural health monitoring has a great potential to reduce the costs related to these operations. Optical fiber sensors applied to the monitoring of aircraft structures provide some advantages over traditional sensors. Several practical applications for structures and engines we have been working on are reported in this article. Fiber Bragg gratings have been analyzed in detail, because they have proved to constitute the most promising technology in this field, and two different alternatives for strain measurements are also described. With regard to engine condition evaluation, we present some results obtained with a reflected intensity-modulated optical fiber sensor for tip clearance and tip timing measurements in a turbine assembled in a wind tunnel.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.