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Title: Ultrafast Fiber Bragg Grating Interrogation for Sensing in Detonation and Shock Wave Experiments

Abstract

Chirped fiber Bragg grating (CFBG) sensors coupled to high speed interrogation systems are described as robust diagnostic approaches to monitoring shock wave and detonation front propagation tracking events for use in high energy density shock physics applications. Taking advantage of the linear distributed spatial encoding of the spectral band in single-mode CFBGs, embedded fiber systems and associated photonic interrogation methodologies are shown as an effective approach to sensing shock and detonation-driven loading processes along the CFBG length. Two approaches, one that detects spectral changes in the integrated spectrum of the CFBG and another coherent pulse interrogation approach that fully resolves its spectral response, shows that 100-MHz–1-GHz interrogation rates are possible with spatial resolution along the CFBG in the 50 µm to sub-millimeter range depending on the combination of CFBG parameters (i.e., length, chirp rate, spectrum) and interrogator design specifics. In conclusion, results from several dynamic tests are used to demonstrate the performance of these high speed systems for shock and detonation propagation tracking under strong and weak shock pressure loading: (1) linear detonation front tracking in the plastic bonded explosive (PBX) PBX-9501; (2) tracking of radial decaying shock with crossover to non-destructive CFBG response; (3) shock wave tracking along anmore » aluminum cylinder wall under weak loading accompanied by dynamic strain effects in the CFBG sensor.« less

Authors:
ORCiD logo [1];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1351233
Report Number(s):
LA-UR-16-29107
Journal ID: ISSN 1424-8220
Grant/Contract Number:  
AC52-06NA25396
Resource Type:
Accepted Manuscript
Journal Name:
Sensors
Additional Journal Information:
Journal Volume: 17; Journal Issue: 2; Journal ID: ISSN 1424-8220
Publisher:
MDPI AG
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 42 ENGINEERING; fiber Bragg grating; fiber sensing; shock waves; detonation; high-speed interrogation

Citation Formats

Rodriguez, George, and Gilbertson, Steve Michael. Ultrafast Fiber Bragg Grating Interrogation for Sensing in Detonation and Shock Wave Experiments. United States: N. p., 2017. Web. doi:10.3390/s17020248.
Rodriguez, George, & Gilbertson, Steve Michael. Ultrafast Fiber Bragg Grating Interrogation for Sensing in Detonation and Shock Wave Experiments. United States. doi:10.3390/s17020248.
Rodriguez, George, and Gilbertson, Steve Michael. Fri . "Ultrafast Fiber Bragg Grating Interrogation for Sensing in Detonation and Shock Wave Experiments". United States. doi:10.3390/s17020248. https://www.osti.gov/servlets/purl/1351233.
@article{osti_1351233,
title = {Ultrafast Fiber Bragg Grating Interrogation for Sensing in Detonation and Shock Wave Experiments},
author = {Rodriguez, George and Gilbertson, Steve Michael},
abstractNote = {Chirped fiber Bragg grating (CFBG) sensors coupled to high speed interrogation systems are described as robust diagnostic approaches to monitoring shock wave and detonation front propagation tracking events for use in high energy density shock physics applications. Taking advantage of the linear distributed spatial encoding of the spectral band in single-mode CFBGs, embedded fiber systems and associated photonic interrogation methodologies are shown as an effective approach to sensing shock and detonation-driven loading processes along the CFBG length. Two approaches, one that detects spectral changes in the integrated spectrum of the CFBG and another coherent pulse interrogation approach that fully resolves its spectral response, shows that 100-MHz–1-GHz interrogation rates are possible with spatial resolution along the CFBG in the 50 µm to sub-millimeter range depending on the combination of CFBG parameters (i.e., length, chirp rate, spectrum) and interrogator design specifics. In conclusion, results from several dynamic tests are used to demonstrate the performance of these high speed systems for shock and detonation propagation tracking under strong and weak shock pressure loading: (1) linear detonation front tracking in the plastic bonded explosive (PBX) PBX-9501; (2) tracking of radial decaying shock with crossover to non-destructive CFBG response; (3) shock wave tracking along an aluminum cylinder wall under weak loading accompanied by dynamic strain effects in the CFBG sensor.},
doi = {10.3390/s17020248},
journal = {Sensors},
number = 2,
volume = 17,
place = {United States},
year = {2017},
month = {1}
}

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Works referenced in this record:

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