&lt;title&gt;Fiber optic distributed sensing systems for harsh aerospace environments&lt;/title&gt;

Udd, Eric; Shulz, Whitten L.; Seim, John M.; Morrell, Mike; Weaver, Thomas; Bush, Jeff; Adamovsky, Grigory

doi:10.1117/12.351549

Cited by 14 publications

(7 citation statements)

References 13 publications

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“…[28][29][30][31] The FBG wavelength filter consists of a series of perturbations in the index of refraction along the length of the doped optical fiber. This index grating reflects a narrow spectrum of light that is directly proportional to the period of the index modulation (grating) in the fiber core.…”

Section: Dynamic Modeling Of a Vibrating Cylindrical Shell And Stmentioning

confidence: 99%

Model-based failure detection for cylindrical shells from noisy vibration measurements

Candy

Fisher

Chambers

2014

The Journal of the Acoustical Society of America

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Model-based processing is a theoretically sound methodology to address difficult objectives in complex physical problems involving multi-channel sensor measurement systems. It involves the incorporation of analytical models of both physical phenomenology (complex vibrating structures, noisy operating environment, etc.) and the measurement processes (sensor networks and including noise) into the processor to extract the desired information. In this paper, a model-based methodology is developed to accomplish the task of online failure monitoring of a vibrating cylindrical shell externally excited by controlled excitations. A model-based processor is formulated to monitor system performance and detect potential failure conditions. The objective of this paper is to develop a real-time, model-based monitoring scheme for online diagnostics in a representative structural vibrational system based on controlled experimental data.

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Section: Dynamic Modeling Of a Vibrating Cylindrical Shell And Stmentioning

confidence: 99%

Model-based failure detection for cylindrical shells from noisy vibration measurements

Candy

Fisher

Chambers

2014

The Journal of the Acoustical Society of America

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“…Grating monitors have proven effective to the aging monitoring of concrete [15], and also have been installed in aircrafts to monitor a variety of parameters [16]. The manufacturing of these sensors, however, generally requires complex equipment to imprint the patterning that constitutes the Bragg grating [16]. An ingenious optical fiber corrosion sensor, first suggested by Archenault et al [17], is shown in Fig.…”

Section: Introduction and Rationalementioning

confidence: 98%

“…Optical fiber sensors for monitoring corrosion or corrosion damage can be divided in two major classes: (a) fiber optic grated sensors and (b) intrinsic fiber optic sensors. Grating monitors have proven effective to the aging monitoring of concrete [15], and also have been installed in aircrafts to monitor a variety of parameters [16]. The manufacturing of these sensors, however, generally requires complex equipment to imprint the patterning that constitutes the Bragg grating [16].…”

Section: Introduction and Rationalementioning

confidence: 99%

Development of stripped-cladding optical fiber sensors for continuous monitoringII: Referencing method for spectral sensing of environmental corrosion

Cardenas-Valencia

Byrne

Calves

et al. 2007

Sensors and Actuators B: Chemical

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“…1 Fibers have also been used for hydrogen leak detection while grating-based sensors monitor temperature and strain from the main engine to the liquid propellant fuel tanks. 2 In addition, applications for fibers in the cryogenic temperature range may be found in the industrial, medical, and geophysical markets.…”

Section: Introductionmentioning

confidence: 99%

Reliability of optical fibers in a cryogenic environment

Lindholm

Stolov

Dyer

et al. 2009

Fiber Optic Sensors and Applications VI

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Optical fibers with various protective coatings were submerged in liquid nitrogen to 77°K then tested for mechanical and optical reliability. It was found that while all the fibers maintained strength after low-temperature exposure, the optical response varied depending on the protective coating. The optical attenuation observed for some fiber samples is due to axial shrinkage of the coating, which then leads to an elevated microbending loss. The behavior of the fiber coating at temperatures below the glass transition temperature is discussed.

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<title>Fiber optic distributed sensing systems for harsh aerospace environments</title>

Cited by 14 publications

References 13 publications

Model-based failure detection for cylindrical shells from noisy vibration measurements

Model-based failure detection for cylindrical shells from noisy vibration measurements

Development of stripped-cladding optical fiber sensors for continuous monitoringII: Referencing method for spectral sensing of environmental corrosion

Reliability of optical fibers in a cryogenic environment

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