Browsing by Author "Barrington, James"

Browsing by Author "Barrington, James"

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  • Application of fibre optic sensing systems to measure rotor blade structural dynamics 
    Weber, Simone; Kissinger, Thomas; Chehura, Edmond; Staines, Stephen; Barrington, James; Mullaney, Kevin; Fragonara, Luca Zanotti; Petrunin, Ivan; James, Stephen; Lone, Mudassir; Tatam, Ralph P. (Elsevier, 2021-03-09)
    This paper compares two fibre optic sensing techniques for vibration characterisation: (a) optical fibre Bragg grating (FBG) strain gauges and (b) a novel direct fibre optic shape sensing (DFOSS) approach based on differential ...
  • Design and fabrication of optical fibre long period gratings for CO₂ sensing 
    Barrington, James (2018-06)
    This thesis investigated the repeatability of the overwrite long period grating (LPG) fabrication method and highlighted the advantage it offers in its ability to tune spectral features thus allowing the manufacture of ...
  • The effect of UV irradiation duty cycle on the 2nd harmonic coupling efficiency in optical fiber long period gratings 
    Barrington, James; Partridge, Matthew; James, Stephen; Tatam, Ralph P. (Elsevier, 2018-08-10)
    Long period gratings (LPGs) as a sensing platform have the potential for multi-parameter measurement through the utilization of 2nd order coupling resonance bands. Although the current literature has produced LPGs with 2nd ...
  • Electromagnetic field controlled domain wall displacement for induced strain tailoring in BaTiO3-epoxy nanocomposite 
    Li, Danning; Barrington, James; James, Stephen; Ayre, David; Sloma, Marcin; Lin, Meng-Fang; Yazdani Nezhad, Hamed (Nature, 2022-05-07)
    Failure in an epoxy polymer composite material is prone to initiate by the coalescence of microcracks in its polymer matrix. As such, matrix toughening via addition of a second phase as rigid or/and rubber nano/micro-particles ...
  • Fibre-optic measurement of strain and shape on a helicopter rotor blade during a ground run: 2. Measurement of shape 
    Kissinger, Thomas; James, Stephen W.; Weber, Simone; Mullaney, Kevin; Chehura, Edmond; Pekmezci, Huseyin H.; Barrington, James; Staines, Stephen E.; Charrett, Thomas O. H.; Lawson, Nicholas J.; Lone, Mudassir; Atack, Richard; Tatam, Ralph P. (IOP Publishing, 2022-06-08)
    Optical fibre strain and shape measurement sensors were deployed on a rotor blade during a full-speed helicopter ground run, with real-time data wirelessly streamed from rotor hub-mounted sensor interrogators. In part 2 ...
  • Optical fibre pressure sensing using a frequency modulated laser-based signal processing technique 
    Barrington, James; James, Stephen; Kissinger, Thomas; Staines, Stephen; Prince, Simon; Alcusa Saez, Erica; Lawson, Nicholas J.; Tatam, Ralph P. (IOP Publishing, 2023-04-21)
    Range resolved interferometry (RRI) applied to the interrogation of an extrinsic Fabry–Perot based pressure sensor in laboratory and wind tunnel environments is presented. A simple, compact sensor head design was fabricated ...
  • Overwrite fabrication and tuning of long period gratings 
    Partridge, Matthew; James, Stephen W.; Barrington, James; Tatam, Ralph P. (Optical Society of America: Open Access Journals / Optical Society of America (OSA), 2016-09-19)
    The central wavelengths of the resonance bands are critical aspect of the performance of long period gratings (LPGs) as sensors, particularly for devices designed to operate near the phase matching turning point (PMTP), ...
  • The use of range-resolved interferometry for multi-parameter sensing in a wind tunnel 
    Barrington, James; James, Stephen; Kissinger, Thomas; Staines, Stephen; Prince, Simon; Alucsa-Saeza, Erica; Lawson, Nicholas J.; Tatam, Ralph P. (SPIE, 2023-05-23)
    The work presented demonstrates that key parameters in aerodynamic structural characterisation of pressure, strain, and structural dynamics, can be all measured via optical fibre sensors interrogated using the principles ...