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Title: High-temperature strain monitoring of stainless steel using fiber optics embedded in ultrasonically consolidated nickel layers

Journal Article · · Smart Materials and Structures
ORCiD logo [1]; ORCiD logo [1];  [2];  [2];  [3]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Fabrisonic LLC, Columbus, OH (United States)
  3. Sheridan Solutions, Saline, MI (United States)
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Fiber optic sensors have long been considered for use in structural health monitoring of components because of their small size, high accuracy, and their ability to perform spatially distributed strain measurements when embedded within a component or on its surface. The typical method for transferring strain from the component to the fiber is to use an epoxy, which may not survive extended exposure to high temperatures, thus necessitating a more elaborate technique to embed the fibers. This work represents a first step towards using additive manufacturing techniques to embed fiber optic sensors on stainless steel components for high-temperature strain monitoring, including quantification of the differential thermal strains that develop between the fiber and the steel substrate. Copper-coated optical fibers were embedded in nickel layers on top of a stainless steel substrate using an ultrasonic additive manufacturing technique. The embedded fibers showed minimal signal attenuation and clear compressive strain after embedding. Heating the embedded fibers in steps to temperatures of 300 °C–400 °C resulted in measured strains with values between the expected thermal strain in stainless steel and nickel. Finite element simulations confirm the measured strain values and show that the thermal strain depends on the thickness of the nickel layers deposited on top of the stainless steel substrate. While the fibers failed before reaching temperatures of 500 °C, it is suspected that these failures occurred due to a combination of (1) the lack of strain relief, (2) the high-temperature oxidation of the fiber's copper coating, and (3) improper sizing of the machined channel in which the fiber is placed prior to embedding. If proper coating selection and sizing of the channel can prevent the failures observed in this work, the next step would be to monitor strain during mechanical loading at high temperatures.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1545217
Journal Information:
Smart Materials and Structures, Vol. 28, Issue 8; ISSN 0964-1726
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 23 works
Citation information provided by
Web of Science

References (40)

Devitrification in annealed optical fiber journal May 1997
High‐temperature effects on the light transmission through sapphire optical fiber journal March 2018
In Situ Thermally Induced Attenuation in Sapphire Optical Fibers Heated to 1400°C journal October 2014
High Level Gamma and Neutron Irradiation of Silica Optical Fibers in CEA OSIRIS Nuclear Reactor journal August 2008
In Situ Gamma Radiation-Induced Attenuation in Sapphire Optical Fibers Heated to 1000°C journal July 2014
In situ reactor radiation-induced attenuation in sapphire optical fibers heated up to 1000 °C journal January 2015
In-situ gamma radiation induced attenuation in silica optical fibers heated up to 600°C journal November 2013
In-Situ Reactor Radiation-Induced Attenuation in Sapphire Optical Fibers journal September 2014
Radiation resistant fiber Bragg grating in random air-line fibers for sensing applications in nuclear reactor cores journal January 2018
Evaluation of the Performance of Distributed Temperature Measurements With Single-Mode Fiber Using Rayleigh Backscatter up to 1000$^{\circ}{\rm C}$ journal January 2014
Fiber-optic sensing of pressure and temperature journal January 1979
Sapphire-fiber-based white-light interferometric sensor for high-temperature measurements journal January 2005
Fiber optic pressure sensor journal March 1980
Liquid level sensing for harsh environment applications using distributed fiber optic temperature measurements journal October 2018
Fiber-optic liquid-level sensor journal February 1997
Fiber-optic liquid-level sensor journal December 1992
White-light interferometric multimode fiber-optic strain sensor journal January 1993
Probing the Ultimate Limit of Fiber-Optic Strain Sensing journal October 2010
Recent applications of fiber optic sensors to health monitoring in civil engineering journal September 2004
Method for embedding optical fibers in an aluminum matrix by ultrasonic consolidation journal January 2005
High Temperature Characterization of Fiber Bragg Grating Sensors Embedded Into Metallic Structures Through Ultrasonic Additive Manufacturing
  • Schomer, John J.; Dapino, Marcelo J.
  • ASME 2017 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, Volume 2: Modeling, Simulation and Control of Adaptive Systems; Integrated System Design and Implementation; Structural Health Monitoring https://doi.org/10.1115/SMASIS2017-3840
conference November 2017
Solid-state additive manufacturing for metallized optical fiber integration journal September 2015
Integrating Fiber Optic Strain Sensors into Metal Using Ultrasonic Additive Manufacturing journal December 2017
Damage detection and assessment in fibre-reinforced composite structures with embedded fibre optic sensors-review journal October 2002
Ultrasonic embedding of nickel-coated fiber Bragg grating in aluminum and associated sensing characteristics journal January 2012
Embedded metallized optical fibers for high temperature applications journal April 2019
Additive Manufacturing Technologies – Rapid Prototyping to Direct Digital Manufacturing journal April 2012
Optimized welding parameters for Al 6061 ultrasonic additive manufactured structures journal July 2014
Distributed Strain and Temperature Discrimination in Unaltered Polarization Maintaining Fiber conference January 2006
High-resolution extended distance distributed fiber-optic sensing using rayleigh backscatter
  • Kreger, Stephen T.; Gifford, Dawn K.; Froggatt, Mark E.
  • The 14th International Symposium on: Smart Structures and Materials & Nondestructive Evaluation and Health Monitoring, SPIE Proceedings https://doi.org/10.1117/12.720913
conference April 2007
High resolution optical frequency domain reflectometry for characterization of components and assemblies journal January 2005
Measurement of Equilibrium Concentrations of Vacancies in Copper journal February 1963
High-temperature thermal expansion of six metallic elements measured by dilatation method and X-ray diffraction journal February 1988
In-situ scanning electron microscopy studies of small fatigue crack growth in ultrasonic consolidation bonded aluminum 2024 laminated structure journal December 2013
Fabrication of metal–matrix composites and adaptive composites using ultrasonic consolidation process journal December 2005
Bond formation and fiber embedment during ultrasonic consolidation journal June 2009
Fiber Bragg gratings journal December 1997
Fiber grating sensors journal January 1997
Fiber Bragg grating technology fundamentals and overview journal January 1997
High level gamma and neutron irradiation of silica optical fibers in CEA OSIRIS nuclear reactor conference September 2007

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