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Conference papers
Fiber Bragg Grating Dynamic Extensometry on Metallic Samples submitted to High Pulse Power Magnetic Fields
Abstract : Isentropic compression of metallic samples under High Pulse Powers (HPPs) are performed at CEA-Gramat. Large strains and high strain rates are obtained under intense magnetic field-driven Laplace forces. On account on electromagnetic immunity, a dedicated Fiber Bragg Grating (FBG) mainframe was designed by CEA LIST. Ring aluminum samples with crossed FBGs bonded onto the external surface were tested on the CYCLOPE HPP facility. Dynamic strain measurements were performed along with Photonic-Doppler Velocimetry (PDV). FBG strain data compare well to strain data derived from PDV displacements, leading the way to direct dynamic extensometry in the purpose of improving Magneto-Hydro-Dynamics (MHD) codes.
Keywords :
Distributed and Quasi-distributed sensing
Optical Fiber Sensor
sensor
instrumentation
Strain measurement
Fiber Bragg grating
High speed photography
Magnetic fields
Spatial resolution
Spontaneous emission
OCIS codes: (1200120) Instrumentation
measurement
and metrology
(0603735) Fiber Bragg Gratings
Cited literature [4 references]
https://hal-cea.archives-ouvertes.fr/cea-01919666
Contributor : Marie-France Robbe Connect in order to contact the contributor
Submitted on : Tuesday, April 28, 2020 - 4:00:12 PM
Last modification on : Thursday, February 17, 2022 - 10:08:03 AM
Contributor : Marie-France Robbe Connect in order to contact the contributor
Submitted on : Tuesday, April 28, 2020 - 4:00:12 PM
Last modification on : Thursday, February 17, 2022 - 10:08:03 AM
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