Strain sensors for high field pulse magnets
Abstract
In this paper we present an investigation into several strain sensing technologies that are being considered to monitor mechanical deformation within the steel reinforcement shells used in high field pulsed magnets. Such systems generally operate at cryogenic temperatures to mitigate heating issues that are inherent in the coils of nondestructive, high field pulsed magnets. The objective of this preliminary study is to characterize the performance of various strain sensing technologies at liquid nitrogen temperatures (-196 C). Four sensor types are considered in this investigation: fiber Bragg gratings (FBG), resistive foil strain gauges (RFSG), piezoelectric polymers (PVDF), and piezoceramics (PZT). Three operational conditions are considered for each sensor: bond integrity, sensitivity as a function of temperature, and thermal cycling effects. Several experiments were conducted as part of this study, investigating adhesion with various substrate materials (stainless steel, aluminum, and carbon fiber), sensitivity to static (FBG and RFSG) and dynamic (RFSG, PVDF and PZT) load conditions, and sensor diagnostics using PZT sensors. This work has been conducted in collaboration with the National High Magnetic Field Laboratory (NHMFL), and the results of this study will be used to identify the set of sensing technologies that would be best suited for integration within highmore »
- Authors:
-
- Los Alamos National Laboratory
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 971646
- Report Number(s):
- LA-UR-09-06415; LA-UR-09-6415
Journal ID: ISSN 2191--5644; TRN: US201004%%229
- DOE Contract Number:
- AC52-06NA25396
- Resource Type:
- Conference
- Resource Relation:
- Conference: IMAC XXVIII ; February 4, 2010 ; Jacksonville, Fl, USA
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING; ADHESION; ALUMINIUM; CARBON; CRYOGENICS; DEFORMATION; FIBERS; HEATING; MAGNETIC FIELDS; MAGNETS; MONITORS; NITROGEN; PERFORMANCE; POLYMERS; SENSITIVITY; STEELS; STRAINS; SUBSTRATES; THERMAL CYCLING
Citation Formats
Martinez, Christian, Zheng, Yan, Easton, Daniel, Farinholt, Kevin M, and Park, Gyuhae. Strain sensors for high field pulse magnets. United States: N. p., 2009.
Web. doi:10.1007/978-1-4419-9834-7_138.
Martinez, Christian, Zheng, Yan, Easton, Daniel, Farinholt, Kevin M, & Park, Gyuhae. Strain sensors for high field pulse magnets. United States. https://doi.org/10.1007/978-1-4419-9834-7_138
Martinez, Christian, Zheng, Yan, Easton, Daniel, Farinholt, Kevin M, and Park, Gyuhae. 2009.
"Strain sensors for high field pulse magnets". United States. https://doi.org/10.1007/978-1-4419-9834-7_138. https://www.osti.gov/servlets/purl/971646.
@article{osti_971646,
title = {Strain sensors for high field pulse magnets},
author = {Martinez, Christian and Zheng, Yan and Easton, Daniel and Farinholt, Kevin M and Park, Gyuhae},
abstractNote = {In this paper we present an investigation into several strain sensing technologies that are being considered to monitor mechanical deformation within the steel reinforcement shells used in high field pulsed magnets. Such systems generally operate at cryogenic temperatures to mitigate heating issues that are inherent in the coils of nondestructive, high field pulsed magnets. The objective of this preliminary study is to characterize the performance of various strain sensing technologies at liquid nitrogen temperatures (-196 C). Four sensor types are considered in this investigation: fiber Bragg gratings (FBG), resistive foil strain gauges (RFSG), piezoelectric polymers (PVDF), and piezoceramics (PZT). Three operational conditions are considered for each sensor: bond integrity, sensitivity as a function of temperature, and thermal cycling effects. Several experiments were conducted as part of this study, investigating adhesion with various substrate materials (stainless steel, aluminum, and carbon fiber), sensitivity to static (FBG and RFSG) and dynamic (RFSG, PVDF and PZT) load conditions, and sensor diagnostics using PZT sensors. This work has been conducted in collaboration with the National High Magnetic Field Laboratory (NHMFL), and the results of this study will be used to identify the set of sensing technologies that would be best suited for integration within high field pulsed magnets at the NHMFL facility.},
doi = {10.1007/978-1-4419-9834-7_138},
url = {https://www.osti.gov/biblio/971646},
journal = {},
issn = {2191--5644},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 2009},
month = {Thu Jan 01 00:00:00 EST 2009}
}