Multipurpose monitoring system for icebreakers: Development, implementation, and testing

Zhirnov, A. A.; Anufriev, M.N.; Pozhar, Nikolay; Stepanov, K. V.; Chernutsky, Anton O.; Makhrov, Ilya; Nesterov, Evgeniy; Shelestov, D. A.; Koshelev, Kirill I.; Fedorov, Aleksey K.; Karasik, Valeriy E.; Pnev, Alexey B.

doi:10.1051/matecconf/20167504005

Cited by 3 publications

(3 citation statements)

References 5 publications

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“…3e). Thus, the suggested scheme can be considered as a potential candidate for cost-effective solution for a Φ-OTDR-based distributed sensor as a component of multipurpose monitoring systems [35].…”

Section: Resultsmentioning

confidence: 99%

Phase-sensitive optical time-domain reflectometry with pulse mode EDFA: Probe pulse preparation

Chernutsky¹,

Zhirnov²,

Fedorov³

et al. 2017

2017 Progress in Electromagnetics Research Symposium - Spring (PIERS)

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Probe pulse preparation techniques play an important role for fiber-optic sensing.In this work, we investigate a setup for distributed sensors based on phase-sensitive optical timedomain reflectometry (Φ-OTDR) with the use of an erbium doped fibre amplifier (EDFA). In our Φ-OTDR setup with pulse mode EDFA, we reveal a regime providing us both sufficiently large amplification of the probe pulse power together and adequately small probe pulse distortion. We then show that the use of pulse mode EDFA is a cost-effective solution, which allows one to avoid nonlinear effect and ensure sufficient sensitivity of the setup.

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Section: Resultsmentioning

confidence: 99%

Phase-sensitive optical time-domain reflectometry with pulse mode EDFA: Probe pulse preparation

Chernutsky¹,

Zhirnov²,

Fedorov³

et al. 2017

2017 Progress in Electromagnetics Research Symposium - Spring (PIERS)

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“…Moreover, a model-based approach for SHM of ship hulls is demonstrated in [10]. Zhirnov et al [11] followed a different approach and combined global and local SHM techniques for structural assessment of icebreakers. A wireless SHM system for submarine structures is presented in [12].…”

Section: Introductionmentioning

confidence: 99%

Detection of Pin Failure in Carbon Fiber Composites Using the Electro-Mechanical Impedance Method

Moll

Schmidt

Käsgen

et al. 2020

Sensors

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This paper presents a proof of concept for simultaneous load and structural health monitoring of a hybrid carbon fiber rudder stock sample consisting of carbon fiber composite and metallic parts in order to demonstrate smart sensors in the context of maritime systems. Therefore, a strain gauge is used to assess bending loads during quasi-static laboratory testing. In addition, six piezoelectric transducers are placed around the circumference of the tubular structure for damage detection based on the electro-mechanical impedance (EMI) method. A damage indicator has been defined that exploits the real and imaginary parts of the admittance for the detection of pin failure in the rudder stock. In particular, higher frequencies in the EMI spectrum contain valuable information about damage. Finally, the information about damage and load are merged in a cluster analysis enabling damage detection under load.

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“…Damage identification in submerged shell structures by means of a differential evolution algorithm has been performed in Reed et al (2013). A multipurpose monitoring system for icebreakers is presented in Zhirnov et al (2016).…”

Section: Introductionmentioning

confidence: 99%

Simultaneous load and structural monitoring of a carbon fiber rudder stock: Experimental results from a quasi-static tensile test

Neuschwander

Moll

Memmolo

et al. 2018

Journal of Intelligent Material Systems and Structures

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Carbon-fiber-reinforced plastics are widely used in lightweight marine structures due to their high strength and superior fatigue behavior. In this article, we will present an innovative methodology for simultaneous load and structural monitoring of a carbon-fiber-reinforced plastic rudder stock as part of a big commercial vessel. Experimental results are presented here from a quasi-static tensile test in which the load monitoring is performed using embedded strain sensors. Structural monitoring is based on high-frequency electromechanical impedance spectroscopy combined with dedicated signal processing and surface-mounted piezoelectric transducers. We have achieved the following results: (1) the demonstration of a hybrid monitoring system including load and structural monitoring, (2) successful embedding of strain gauges during composite manufacturing of the carbon-fiber-reinforced plastic rudder stock, (3) development of instrumentation hardware for multichannel electromechanical impedance measurements, and (4) successful damage detection by means of electromechanical impedance spectroscopy in thick carbon-fiber-reinforced plastic rudder stock samples exploiting strain data.

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Multipurpose monitoring system for icebreakers: Development, implementation, and testing

Cited by 3 publications

References 5 publications

Phase-sensitive optical time-domain reflectometry with pulse mode EDFA: Probe pulse preparation

Phase-sensitive optical time-domain reflectometry with pulse mode EDFA: Probe pulse preparation

Detection of Pin Failure in Carbon Fiber Composites Using the Electro-Mechanical Impedance Method

Simultaneous load and structural monitoring of a carbon fiber rudder stock: Experimental results from a quasi-static tensile test

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