Process for mounting and packaging of fiber Bragg grating strain sensors for use in harsh environment applications

Wnuk, Vincent P.; Méndez, Alexis; Ferguson, Steve; Graver, Tom

doi:10.1117/12.601971

Cited by 35 publications

(24 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The application of FBG-based sensors to strain monitoring has required suitable technological solutions, including mounting supports and packaging of the sensor, which are necessary for harsh environments [12,13]. In some of these solutions, the fibre with the inscribed grating is fixed (usually glued) to the sensor structure in two permanent positions, and often pre-tensioned in order to measure both positive and negative strain values.…”

Section: Introductionmentioning

confidence: 99%

Temperature-compensated fibre Bragg grating ‐based sensor with variable sensitivity

Sante¹,

Bastianini²

2015

Optics and Lasers in Engineering

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Temperature-compensated fibre Bragg grating ‐based sensor with variable sensitivity

Sante¹,

Bastianini²

2015

Optics and Lasers in Engineering

View full text Add to dashboard Cite

“…Metal foil [3] and resonant strain gauge [4] measurements drift due to their temperature sensitivity. High-temperature encapsulation of Bragg-grating strain sensors has enhanced their operation in intense environments [5]. However they are sensitive to temperature and also its size and development costs limit their application and adoption However, capacitive sensing mechanism is intrinsically temperature insensitive and exhibits higher performance stability and reliability for long-term application purposes.…”

Section: Introductionmentioning

confidence: 99%

Corrosion Enhanced Capacitive Strain Gauge at 370°C

et al. 2007

View full text Add to dashboard Cite

In this paper a silicon carbide passivated capacitive strain sensor is proposed which continuously and accurately measures strain in corrosive ambient and operates up to 370ºC in air. The analytical model of this low-mechanical noise, highresolution and high-gain capacitive SiC coated sensor predicts 45 aF/µε sensitivity, which is in a good agreement with finite element analysis (within 12%) over the intended full-scale range of 1-1000 µε. The gauge is fabricated using silicon-oninsulator and coated with a thin (~ 60nm) pinhole-free 3C-SiC layer. The integrity of the passivation layer is tested using a hot KOH bath followed by SEM inspection which shows no defects or damage. A localized-heating, high-temperature testing setup has been built using an infra-red lamp to heat the gauge up to 370ºC while maintaining the electronics at significantly reduced temperatures. Experimental results show the strain gauge successfully continues to operate at 370ºC.

show abstract

“…이러한 장점을 이용하여 해상도가 높은 단일 점 센서와 넓은 영역을 모니터링 할 수 있는 분포형 센서의 장점을 다중 화 기법에 의해 결합한 준분포형 센서로의 확장이 가능하다 [4,7,8] . 것이 바람직하다 [9][10][11][12][13] . 그러므로 본 연구에서는 FBG 센서에 에폭 시 패키징 처리를 하여 광섬유의 파손 및 온도에 대한 민감도를 개선한 센서 탐촉자를 제작하고자 한다.…”

unclassified

Fabrication of a Multiplexing Sensor Probe for Measuring the Blade Deflection of a Wind Power Generator

Kim¹,

Lee²

2014

Journal of manufacturing engineering & technology

View full text Add to dashboard Cite

ARTICLE INFO ABSTRACT Article history:This paper describes a fabrication multiplexing sensor probe that employs a fiber Bragg grating(FBG) based on multiple measurements to determine the blade deflection of a wind power generator the reliability analysis of this probe is also presented. To diminish the temperature sensitivity of the FBG sensor, we form multiple CFRPs onto the upper and lower layers of the FBG and package it with an epoxy resin. As a result, the depth of the CFRP is 1mm, and the temperature sensitivity is 2.39pm/℃. We construct a sensor network utilizing the fabricated sensor with a blade beam model. As the number of pendulums is increased on the fore-end of the beam, the strain value is measured. The strain variation is calculated from the measurement of the load on the blade beam model by monitoring the strain of the FBG sensor. When the linear equation is applied, the strain error is 0.4% and when the finite difference method is used, the tip deflection error is 3.3%. The displacement error derived from the strain value of the FBG sensor is 4.39%. The calculated result between the measured value of the dead-end of the beam and the strain is less than 2.46% tip distortion error. Therefore, our proposed multiplexing sensor probe is a low-cost and high-reliability solution for a commercial wind power generator.

show abstract

Process for mounting and packaging of fiber Bragg grating strain sensors for use in harsh environment applications

Cited by 35 publications

References 2 publications

Temperature-compensated fibre Bragg grating ‐based sensor with variable sensitivity

Temperature-compensated fibre Bragg grating ‐based sensor with variable sensitivity

Corrosion Enhanced Capacitive Strain Gauge at 370°C

Fabrication of a Multiplexing Sensor Probe for Measuring the Blade Deflection of a Wind Power Generator

Contact Info

Product

Resources

About