Vibration Detection Using Optical Fiber Sensors

García, Yoany Rodríguez; Corres, Jesús M.; Goicoechea, Javier

doi:10.1155/2010/936487

Cited by 109 publications

(51 citation statements)

References 58 publications

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“…These include, not only limited to, thermoplastic cutting [1], telecommunications, sensing devices [2], printer nozzles, drilling of biomedical catheter, microscribing [3], optical fiber microsensors for vibration detection [4], and biomaterial fluidic-channels [5]. Microchannels are the key features in the field of biomedical devices.…”

Section: Introductionmentioning

confidence: 99%

Laser Ablation Process Competency to Fabricate Microchannels in Titanium Alloy

Ahmed

Darwish

Alahmari

et al. 2015

Materials and Manufacturing Processes

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Laser ablation is one of the competent machining processes to fabricate microfeatures in variety of engineering materials. This study has been progressed to evaluate the process capability of generating microchannels of various sizes (50 Â 50 mm, 100 Â 100 mm, 200 Â 100 mm, and 1000 Â 500 mm) in titanium alloy (Ti6Al4V) using Nd:YAG laser. Channel's top width, bottom width, depth, and taperness are examined as the four process responses against three laser based parameters to the naming of laser intensity, repetition rate, and scan speed. All the geometrical dimensions are measured through photographic snapshots of SEM of each fabricated channel. The results reveal that the selection of channel size is critical to achieve the desired machining geometries. Wider sized channels (such as 200 Â 100 and 500 Â 1000 mm) are experienced as more flexible to be generated than narrower sized channels (50 Â 50 and 100 Â 100 mm). The precise parametric combination is the key to realize more tight dimensional enormities with respect to the targeted machining elements. The most appropriate parametric combinations that can generate the respectable results are explored and applied for machining of different channel sizes.

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Section: Introductionmentioning

confidence: 99%

Laser Ablation Process Competency to Fabricate Microchannels in Titanium Alloy

Ahmed

Darwish

Alahmari

et al. 2015

Materials and Manufacturing Processes

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“…Such sensors have already been used many times to carry out dynamic strain measurements [2], [6]. Fibre Bragg gratings (FBGs), more specifically, have a proven potential when it comes to measuring vibrations [7], [8], [9], [10].…”

Section: Introductionmentioning

confidence: 99%

Signal-to-Noise Ratio Evaluation of Fibre Bragg Gratings for Dynamic Strain Sensing at Elevated Temperatures in a Liquid Metal Environment

Pauw¹,

Lamberti

Rezayat

et al. 2015

J. Lightwave Technol.

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Vibration measurements of the fuel assembly of a nuclear reactor are a very useful tool to determine the health and lifetime of the reactor core. The importance of these measurements is exacerbated in the new generation of heavy liquid metal reactors, where the fuel assembly is exposed to a corrosive molten metal coolant at 300 • C and where the space between the individual fuel pins is limited to a few millimeters. In this paper we consider fibre Bragg gratings as potential candidates for carrying out fuel pin vibration measurements in such an environment. We describe a dedicated method to integrate fibre Bragg gratings in a fuel pin and we subject this pin to conditions close to those encountered in a real heavy liquid metal reactor. More specifically, we report on the performance of draw tower gratings used as a vibration sensor when the fuel pins are immersed in heavy liquid metal at 300 • C for up to 700 hours. The performance evaluation is based on monitoring the signalto-noise ratio of the grating's spectral response as a function of time. We show that accurate detection of the Bragg peak becomes very challenging after 400 hours of exposure. Additionally, we succeed to extend the useful lifetime with a factor of two by using an appropriate integration of the fiber in the fuel pin and by using an alternate peak detection algorithm.

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“…Among the constituents of enabling ICT technologies are wireless, web-based, semantic and context-adaptive computing coupled with machine learning [2,3], whereas wireless sensing [4] and photonic technologies [5,6] offer increased flexibility and versatility on the sensing and signal transmission side. The integration of such enabling ICT and photonic technologies within an e-maintenance architecture seeks to take advantage of the aforementioned benefits while pushing towards greater data and services integration in physical asset management [7].…”

Section: Introductionmentioning

confidence: 99%

Wireless Condition Monitoring Integrating Smart Computing and Optical Sensor Technologies

Emmanouilidis

Riziotis

2014

Lecture Notes in Mechanical Engineering

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Condition monitoring is increasingly benefitting from the application of emerging technologies, such as mobile computing and wireless sensors, including photonics sensors. The latter can be applicable to diverse application needs, due to their versatility, low costs, installation and operational flexibility, as well as unique safety and reliable operation characteristics in real industrial environments of excessive electromagnetic interference and noise. Coupling the monitoring flexibility offered by photonics technologies, with the data transmission flexibility of wireless networking provides opportunities to develop hybrid wireless sensor solutions, incorporating optical sensors into wireless condition monitoring architectures. This paper presents ongoing work within an integrated architecture for condition monitoring and maintenance management support, exploiting the added value of optical technology, inherently safe with respect to electromagnetic compatibility. The reported results are part of a collaborative project involving technology providers in wireless sensor networking, embedded systems and maintenance engineering, as well as research organizations active on photonics technologies and informatics for wireless and intelligence-enabled engineering asset management. The industrial test cases are from a lifts manufacturing industry, focusing on both production facilities assets, as well as on the end-product. The photonic platform of plastic optical fibers was selected due to its versatility and suitability for rapid customization and prototyping. The platform can serve diverse sensing and monitoring needs, ranging from physical parameters as strain and displacement in machinery parts, to chemical and biochemical monitoring of industrial-grade coolants' aging. Use of novel nanostructured optical materials together with laser-based micromachining techniques enabled the functional enhancement through rapid prototyping of optical fiber devices towards highly

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Vibration Detection Using Optical Fiber Sensors

Cited by 109 publications

References 58 publications

Laser Ablation Process Competency to Fabricate Microchannels in Titanium Alloy

Laser Ablation Process Competency to Fabricate Microchannels in Titanium Alloy

Signal-to-Noise Ratio Evaluation of Fibre Bragg Gratings for Dynamic Strain Sensing at Elevated Temperatures in a Liquid Metal Environment

Wireless Condition Monitoring Integrating Smart Computing and Optical Sensor Technologies

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