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Title: 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 » field pulsed magnets at the NHMFL facility.« less

Authors:
 [1];  [1];  [1];  [1];  [1]
  1. 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}
}

Conference:
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