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Journal Articles Applied optics Year : 2022

Multimode polymer chirped fiber Bragg grating for shock and detonation velocity

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Yohan Barbarin
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Alexandre Lefrançois
  • Function : Author
Vincent Chuzeville
  • Function : Author
Pascal Hereil
  • Function : Author
Sofiane Echaoui
  • Function : Author
Louis Thamié
  • Function : Author
Jérôme Luc
  • Function : Author

Abstract

Shock and detonation velocities are today measured continuously using long silica chirped fiber Bragg gratings (CFBGs). These thin probes can be directly inserted into high-explosive samples. The use of a polymer fiber increases the sensitivity at low pressure levels when studying, for instance, shock-to-detonation transitions in wedge tests. The 22-mm-long multimode polymer CFBGs have, therefore, been manufactured and characterized. A first detonation experiment was realized on a narrow Formex strip using such a sensor. The feasibility is demonstrated, and the associated uncertainties, mostly coming from the use of a multimode fiber, are discussed.
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Dates and versions

cea-03909706 , version 1 (21-12-2022)

Licence

Attribution - CC BY 4.0

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Yohan Barbarin, Alexandre Lefrançois, Vincent Chuzeville, Pascal Hereil, Sofiane Echaoui, et al.. Multimode polymer chirped fiber Bragg grating for shock and detonation velocity. Applied optics, 2022, 61 (31), pp.9193-9197. ⟨10.1364/AO.474167⟩. ⟨cea-03909706⟩

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