Smart structure sensors based on embedded fibre Bragg grating arrays in aluminium alloy matrix by ultrasonic consolidation

Chengbo Mou, Pouneh Saffari, Dezhi Li, Kaiming Zhou, Lin Zhang, Rupert Soar, Ian Bennion

Research output: Contribution to journalArticle

Abstract

Smart structure sensors based on embedded fibre Bragg grating (FBG) arrays in aluminium alloy matrix by ultrasonic consolidation (UC) technique have been proposed and demonstrated successfully. The temperature, loading and bending responses of the embedded FBG arrays have been systematically characterized. The embedded FBGs exhibit an average temperature sensitivity of ~36 pm °C-1, which is three times higher than that of normal FBGs, a bending sensitivity of 0.73 nm/m-1 and a loading responsivity of ~0.1 nm kg-1 within the dynamic range from 0 kg to 3 kg. These initial experimental results clearly demonstrate that the UC produced metal matrix structures can be embedded with FBG sensor arrays to become smart structures with capabilities to monitor the structure operation and health conditions in applications.
Original languageEnglish
Article number034013
JournalMeasurement Science and Technology
Volume20
Issue number3
DOIs
Publication statusPublished - 4 Feb 2009

Keywords

  • fibre Bragg grating
  • optical fibre sensor
  • smart structure
  • ultrasonic consolidation
  • photonics

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