Citation:
Zhang W, Webb DJ, Carpenter M, Williams C, Measuring water activity of aviation fuel using a polymer optical fiber Bragg grating, José M. López-Higuera; Julian D. C. Jones; Manuel López-Amo; José L. Santos, 23rd International Conference on Optical Fibre Sensors, Santander, Spain, June 02, 2014, Proceedings SPIE 9157.
Abstract:
Poly(methyl methacrylate) (PMMA) based polymer optical fiber Bragg gratings have been used for measuring water activity of aviation fuel. Jet A-1 samples with water content ranging from 100% ERH (wet fuel) to 10 ppm (dried fuel), have been conditioned and calibrated for measurement. The PMMA based optical fiber grating exhibits consistent response and a good sensitivity of 59±3pm/ppm (water content in mass). This water activity measurement allows PMMA based optical fiber gratings to detect very tiny amounts of water in fuels that have a low water saturation point, potentially giving early warning of unsafe operation of a fuel system