Abstract
Palladium and its alloys show a high and selective affinity for hydrogen, resulting in a volume expansion. Fibre Bragg gratings attached to palladium elements are used to monitor the resultant strain from the hydrogen uptake. The technique is aimed at low concentration hydrogen monitoring to a few hundred ppm, where H2 is the result of ageing of polymer materials. We demonstrate a sensor exhibiting 10 ppm sensitivity and report on observed cross sensitivity to environmental conditions. © British Crown Copyright 2006/MOD.
Original language | English |
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Pages (from-to) | 1118-1123 |
Number of pages | 6 |
Journal | Measurement Science and Technology |
Volume | 17 |
Issue number | 5 |
DOIs | |
Publication status | Published - 1 May 2006 |
Keywords
- Fibre Bragg grating
- Fibre optic sensing
- Hydrogen
- Palladium