Packaging of surface relief fiber Bragg gratings for use as strain sensors at high temperature

Selfridge, Richard H.; Schultz, Stephen M.; Lowder, Tyson L.; Wnuk, Vincent P.; Méndez, Alexis; Ferguson, Steve; Graver, Tom

doi:10.1117/12.657661

Cited by 8 publications

(5 citation statements)

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“…Latini et al [2,31] developed a prototype for a structural health monitoring (SHM) system using high-temperature-resistant FBG sensors to measure temperature, and using a silica-sapphire-based extrinsic Fabry-Perot interferometric (EFPI) sensor to measure strain with working temperature up to 800 °C. Méndez [32,33] and Selfridge et al [34] mounted CCGs onto a metal shim using a silica-filled epoxy compound, providing a pre-packaged FBG sensor that can be spot-welded onto a hot metal structure up to 800 °C. Reddy [35] and Barrera et al [36][37][38] provide a good way to encapsulate RFBGs with a metal tube or a combination of ceramic and metal tubes, which can be used to measure temperatures up to 1100 °C.…”

Section: Measurement Of the High-temperature Strain Of Uhtc Materials...mentioning

confidence: 99%

Measurement of the high-temperature strain of UHTC materials using chemical composition gratings

Xie

Meng

Jin

et al. 2016

Meas. Sci. Technol.

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This paper proposes a simple bonding and measuring technique to realise silica-based chemical composition gratings' (CCGs) high temperature applications on hot structures. We describe a series of experiments on CCGs to measure the thermal and mechanical response characteristics of ultra-high temperature ceramic (UHTC) materials when the maximum temperature is above 1000°C. Response characteristics are obtained at the heating and cooling stages. Results show that the wavelength response of the CCGs bonded on the UHTC plate increases non-linearly with increasing temperatures, but decreases almost linearly with decreasing temperatures. The temperature-dependent strain transfer coefficients are calculated theoretically and experimentally; results show that the values of strain transfer coefficients below 1000°C are significantly affected by the thermal expansion coefficient of the substrate material and the interface. The strain transfer coefficient value tends to vary slowly between 0.616 and 0.626 above 700°C.

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Section: Measurement Of the High-temperature Strain Of Uhtc Materials...mentioning

confidence: 99%

Measurement of the high-temperature strain of UHTC materials using chemical composition gratings

Xie

Meng

Jin

et al. 2016

Meas. Sci. Technol.

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“…The sensor exhibited a linear response over the temperature measurement range of −20°C to 120°C and 1000 με. To improve the temperature range of the sensor, their team [120] subsequently bonded surface relief fiber Bragg gratings (SR-FBGs) to a metal substrate in 2006 and successfully achieved a high-temperature linear response up to 800°C. In 2009, Li et al [121] bonded a steel tube encapsulated FBG to a semi-cylindrical metal sheet to enhance temperature sensitivity and eliminate the effect of stress.…”

Section: Substrate Encapsulationmentioning

confidence: 99%

Recent advances in optical fiber high-temperature sensors and encapsulation technique [Invited]

å¾�,

å�ž,

æ¢�

et al. 2023

Chin. Opt. Lett.

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In the aerospace field, for aerospace engines and other high-end manufacturing equipment working in extreme environments, like ultrahigh temperatures, high pressure, and high-speed airflow, in situ temperature measurement is of great importance for improving the structure design and achieving the health monitoring and the fault diagnosis of critical parts. Optical fiber sensors have the advantages of small size, easy design, corrosion resistance, anti-electromagnetic interference, and the ability to achieve distributed or quasi-distributed sensing and have broad application prospects for temperature sensing in extreme environments. In this review, first, we introduce the current research status of fiber Bragg grating-type and Fabry-Perot interferometer-type high-temperature sensors. Then we review the optical fiber hightemperature sensor encapsulation techniques, including tubular encapsulation, substrate encapsulation, and metalembedded encapsulation, and discuss the extreme environmental adaptability of different encapsulation structures. Finally, the critical technological issues that need to be solved for the application of optical fiber sensors in extreme environments are discussed.

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“…Successively, researchers at the Brigham Young University demonstrated how to etch an arbitrary length of the D-fiber to remove and replace the core section with another (functional) optical material [54]. The same group proposed, for the first time, a surface relief FBG realized on the flat surface of a D-shaped optical fiber and exploited such device for the realization of various sensor typologies such as high temperature sensors [55], strain sensors [56], and chemical sensors [57]. Jang et al also recently proposed an evanescent wave LPFG (EWLPFG) for biosensing applications by using a side-polished fiber in combination with periodically patterned photo-resist using photolithography [58].…”

Section: Evanescent Wave Lpgs Within D-shaped Optical Fibersmentioning

confidence: 99%

Lab-on-fiber technology: a new avenue for optical nanosensors

2012

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The "lab-on-fiber" concept envisions novel and highly functionalized technological platforms completely integrated in a single optical fiber that would allow the development of advanced devices, components and subsystems to be incorporated in modern optical systems for communication and sensing applications. The realization of integrated optical fiber devices requires that several structures and materials at nano-and micro-scale are constructed, embedded and connected all together to provide the necessary physical connections and light-matter interactions. This paper reviews the strategies, the main achievements and related devices in the lab-on-fiber roadmap discussing perspectives and challenges that lie ahead.

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Packaging of surface relief fiber Bragg gratings for use as strain sensors at high temperature

Cited by 8 publications

References 0 publications

Measurement of the high-temperature strain of UHTC materials using chemical composition gratings

Measurement of the high-temperature strain of UHTC materials using chemical composition gratings

Recent advances in optical fiber high-temperature sensors and encapsulation technique [Invited]

Lab-on-fiber technology: a new avenue for optical nanosensors

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