Share Email Print
cover

Proceedings Paper

Embedded fiber optic Bragg grating (FBG) detonation velocity sensor
Author(s): Jerry Benterou; Corey V. Bennett; Garrett Cole; D. E. Hare; Chadd May; Eric Udd; Stephen J. Mihailov; Ping Lu
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

In order to fully calibrate hydrocodes and dynamic chemistry burn models, initiation models and detonation models of high explosives, the ability to continuously measure the detonation velocity within an explosive is required. Progress on an embedded velocity diagnostic using a 125 micron diameter optical fiber containing a chirped fiber Bragg grating is reported. As the chirped fiber Bragg grating is consumed by the moving detonation wave, the physical length of the unconsumed Bragg grating is monitored with a fast InGaAs photodiode. Experimental details of the associated equipment and data in the form of continuous detonation velocity records within PBX-9502 are presented. This small diameter fiber sensor has the potential to measure internal detonation velocities on the order of 10 mm/μsec along path lengths tens of millimeters long.

Paper Details

Date Published: 27 April 2009
PDF: 10 pages
Proc. SPIE 7316, Fiber Optic Sensors and Applications VI, 73160E (27 April 2009); doi: 10.1117/12.819208
Show Author Affiliations
Jerry Benterou, Lawrence Livermore National Lab. (United States)
Corey V. Bennett, Lawrence Livermore National Lab. (United States)
Garrett Cole, Lawrence Livermore National Lab. (United States)
D. E. Hare, Lawrence Livermore National Lab. (United States)
Chadd May, Lawrence Livermore National Lab. (United States)
Eric Udd, Columbia Gorge Research (United States)
Stephen J. Mihailov, Communications Research Ctr. Canada (Canada)
Ping Lu, Communications Research Ctr. Canada (Canada)


Published in SPIE Proceedings Vol. 7316:
Fiber Optic Sensors and Applications VI
Eric Udd; Henry H. Du; Anbo Wang, Editor(s)

© SPIE. Terms of Use
Back to Top