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Detonation velocity measurements using rare-Earth doped fibres

Detonation velocity measurements using rare-Earth doped fibres
Detonation velocity measurements using rare-Earth doped fibres

In this paper, a simple detonation velocity measurement scheme is presented, which exploits the length-dependent amplified spontaneous emission (ASE) power emitted by off-the-shelf Er-doped fibres. This measurement scheme is first calibrated using cutback tests, so that minimal processing is required between data collection and velocity readout. We then demonstrate the use of this method in an explosive cylinder test and achieve a spatial resolution of approximately ±2 mm, owing to its implementation in a helical geometry. Alongside the standard Er fibres, a specially made, high-concentration Er/Yb-doped fibre is also calibrated, which demonstrates a potential spatial resolution approaching ±20 μm.

detonation, fibre sensing, rare-earth fibres, velocity sensing
1424-8220
1-8
Pooley, Josh
7f36d8ae-8883-4dbe-be4c-fbaeb5a84240
Price, Ed
d7c2e2e5-b6ef-4cf8-b4c1-de2072647f54
Ferguson, James W.
895c1002-9e99-4320-8ec9-ec5c9bffecff
Ibsen, Morten
22e58138-5ce9-4bed-87e1-735c91f8f3b9
Pooley, Josh
7f36d8ae-8883-4dbe-be4c-fbaeb5a84240
Price, Ed
d7c2e2e5-b6ef-4cf8-b4c1-de2072647f54
Ferguson, James W.
895c1002-9e99-4320-8ec9-ec5c9bffecff
Ibsen, Morten
22e58138-5ce9-4bed-87e1-735c91f8f3b9

Pooley, Josh, Price, Ed, Ferguson, James W. and Ibsen, Morten (2019) Detonation velocity measurements using rare-Earth doped fibres. Sensors, 19 (7), 1-8. (doi:10.3390/s19071697).

Record type: Article

Abstract

In this paper, a simple detonation velocity measurement scheme is presented, which exploits the length-dependent amplified spontaneous emission (ASE) power emitted by off-the-shelf Er-doped fibres. This measurement scheme is first calibrated using cutback tests, so that minimal processing is required between data collection and velocity readout. We then demonstrate the use of this method in an explosive cylinder test and achieve a spatial resolution of approximately ±2 mm, owing to its implementation in a helical geometry. Alongside the standard Er fibres, a specially made, high-concentration Er/Yb-doped fibre is also calibrated, which demonstrates a potential spatial resolution approaching ±20 μm.

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Accepted/In Press date: 7 April 2019
e-pub ahead of print date: 10 April 2019
Keywords: detonation, fibre sensing, rare-earth fibres, velocity sensing

Identifiers

Local EPrints ID: 430716
URI: https://eprints.soton.ac.uk/id/eprint/430716
ISSN: 1424-8220
PURE UUID: d6c9dedc-65af-4b5b-a9ce-cd52faab19b2

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Date deposited: 09 May 2019 16:30
Last modified: 19 Jul 2019 16:34

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Contributors

Author: Josh Pooley
Author: Ed Price
Author: James W. Ferguson
Author: Morten Ibsen

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