High Speed, Localized Multi-Point Strain Measurements on a Containment Vessel at 1.7 MHz Using Swept-Wavelength Laser-Interrogated Fiber Bragg Gratings
Dynamic elastic strain in ~1.8 and 1.0 m diameter containment vessels containing a high explosive detonation was measured using an array of fiber Bragg gratings. The all-optical method, called real-time localized strain measurement, recorded the strain for 10 ms after detonation with additional meas...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-10-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/20/20/5935 |
| _version_ | 1797550368624738304 |
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| author | Steve Gilbertson Mark Pickrell Dario Castano Gary Salazar Tom Beery Samuel Stone Joshem Gibson |
| author_facet | Steve Gilbertson Mark Pickrell Dario Castano Gary Salazar Tom Beery Samuel Stone Joshem Gibson |
| author_sort | Steve Gilbertson |
| collection | DOAJ |
| description | Dynamic elastic strain in ~1.8 and 1.0 m diameter containment vessels containing a high explosive detonation was measured using an array of fiber Bragg gratings. The all-optical method, called real-time localized strain measurement, recorded the strain for 10 ms after detonation with additional measurements being sequentially made at a rate of 1.7 MHz. A swept wavelength laser source provided the repetition rate necessary for such high-speed measurements while also providing enough signal strength and bandwidth to simultaneously measure 8 or more unique points on the vessel’s surface. The data presented here arethen compared with additional diagnostics consisting of a fast spectral interferometer and an optical backscatter reflectometer to show a comparison between the local and global changes in the vessel strain, both dynamically and statically to further characterize the performance of the localized strain measurement. The results are also compared with electrical resistive strain gauges and finite element analysis simulations. |
| first_indexed | 2024-03-10T15:28:18Z |
| format | Article |
| id | doaj.art-18fc038184774202be9c81fbb0c22f06 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T15:28:18Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-18fc038184774202be9c81fbb0c22f062023-11-20T17:52:23ZengMDPI AGSensors1424-82202020-10-012020593510.3390/s20205935High Speed, Localized Multi-Point Strain Measurements on a Containment Vessel at 1.7 MHz Using Swept-Wavelength Laser-Interrogated Fiber Bragg GratingsSteve Gilbertson0Mark Pickrell1Dario Castano2Gary Salazar3Tom Beery4Samuel Stone5Joshem Gibson6Los Alamos National Laboratory, DARHT Experiments and Diagnostics, MS P940, Los Alamos, NM 87545, USALos Alamos National Laboratory, DARHT Experiments and Diagnostics, MS P940, Los Alamos, NM 87545, USALos Alamos National Laboratory, Advanced Engineering Analysis, MS A142, Los Alamos, NM 87545, USALos Alamos National Laboratory, DARHT Experiments and Diagnostics, MS P940, Los Alamos, NM 87545, USALos Alamos National Laboratory, DARHT Experiments and Diagnostics, MS P940, Los Alamos, NM 87545, USALawrence Livermore National Laboratory, Environmental Test Group, L-125, Livermore, CA 94550, USALos Alamos National Laboratory, Dynamic Structure Design and Engineering, MS P942, Los Alamos, NM 87545, USADynamic elastic strain in ~1.8 and 1.0 m diameter containment vessels containing a high explosive detonation was measured using an array of fiber Bragg gratings. The all-optical method, called real-time localized strain measurement, recorded the strain for 10 ms after detonation with additional measurements being sequentially made at a rate of 1.7 MHz. A swept wavelength laser source provided the repetition rate necessary for such high-speed measurements while also providing enough signal strength and bandwidth to simultaneously measure 8 or more unique points on the vessel’s surface. The data presented here arethen compared with additional diagnostics consisting of a fast spectral interferometer and an optical backscatter reflectometer to show a comparison between the local and global changes in the vessel strain, both dynamically and statically to further characterize the performance of the localized strain measurement. The results are also compared with electrical resistive strain gauges and finite element analysis simulations.https://www.mdpi.com/1424-8220/20/20/5935fiber Bragg gratingfiber sensinghigh-speed interrogationdynamic strain |
| spellingShingle | Steve Gilbertson Mark Pickrell Dario Castano Gary Salazar Tom Beery Samuel Stone Joshem Gibson High Speed, Localized Multi-Point Strain Measurements on a Containment Vessel at 1.7 MHz Using Swept-Wavelength Laser-Interrogated Fiber Bragg Gratings Sensors fiber Bragg grating fiber sensing high-speed interrogation dynamic strain |
| title | High Speed, Localized Multi-Point Strain Measurements on a Containment Vessel at 1.7 MHz Using Swept-Wavelength Laser-Interrogated Fiber Bragg Gratings |
| title_full | High Speed, Localized Multi-Point Strain Measurements on a Containment Vessel at 1.7 MHz Using Swept-Wavelength Laser-Interrogated Fiber Bragg Gratings |
| title_fullStr | High Speed, Localized Multi-Point Strain Measurements on a Containment Vessel at 1.7 MHz Using Swept-Wavelength Laser-Interrogated Fiber Bragg Gratings |
| title_full_unstemmed | High Speed, Localized Multi-Point Strain Measurements on a Containment Vessel at 1.7 MHz Using Swept-Wavelength Laser-Interrogated Fiber Bragg Gratings |
| title_short | High Speed, Localized Multi-Point Strain Measurements on a Containment Vessel at 1.7 MHz Using Swept-Wavelength Laser-Interrogated Fiber Bragg Gratings |
| title_sort | high speed localized multi point strain measurements on a containment vessel at 1 7 mhz using swept wavelength laser interrogated fiber bragg gratings |
| topic | fiber Bragg grating fiber sensing high-speed interrogation dynamic strain |
| url | https://www.mdpi.com/1424-8220/20/20/5935 |
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