Browsing by Author "Buggy, Stephen J."

Browsing by Author "Buggy, Stephen J."

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  • Buggy, Stephen J. (Cranfield University, 2008-06)
    In this thesis a long period grating (LPG) based sensor is investigated as a possible alternative to current process monitoring sensors used in the manufacture of composites to monitor cure. An LPG is demonstrated as a ...
  • Buggy, Stephen J.; Murphy, Richard P.; James, Stephen W.; Tatam, Ralph P. (International Society for Optical Engineering; 1999, 2007-12-31)
    A cascaded long period grating Mach-Zehnder interferometer is used to monitor the change in refractive index of a UV cured epoxy resin over a cure cycle. Fourier techniques are used to calculate the phase shift and ...
  • Buggy, Stephen J.; Chehura, Edmon; Skordos, Alexandros A.; Dimopoulos, A.; James, Stephen W.; Partridge, Ivana K.; Tatam, Ralph P. (2007-06-17)
    Optimum performance from advanced composites requires careful control of the resin matrix during cure. This is to ensure there are no cure induced voids and to minimise the build up of internal stresses. Careful control ...
  • Buggy, Stephen J.; James, Stephen W.; Tatam, Ralph P. (International Society for Optical Engineering; 1999, 2008-12-31)
    A chirped long period grating (LPG) is used as a directional flow sensor by monitoring the change in the transmission spectrum upon immersion in an oil of refractive index higher than that of the fibre cladding. The ...
  • Chehura, Edmon; Buggy, Stephen J.; James, Stephen W.; Johnstone, Adam; Lakrimi, M’hamed; Domptail, Fred; Twin, Andrew; Tatam, Ralph P. (Institute of Physics, 2011-12-31)
    The commissioning of superconducting magnet coils was monitored using embedded optical fibre Bragg grating sensors (FBG) fabricated in highly linearly birefringent (HiBi) fibre. The HiBi FBG sensors monitored the internal ...
  • Buggy, Stephen J.; Chehura, Edmon; James, Stephen W.; Tatam, Ralph P. (Institute of Physics, 2007-06-01)
    The use of fibre grating refractometers as a means of monitoring the cure of a UVcured epoxy resin is presented. The wavelength shift of the attenuation bands of a long period grating and the spectral response of a tilted ...