Inverse problem of determining periodic surface profile oscillation defects of steel materials with a fiber Bragg grating sensor

Cięszczyk, S.; Kisała, Piotr

doi:10.1364/ao.55.001412

Cited by 28 publications

(12 citation statements)

References 55 publications

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“…These single-point sensors can be multiplexed and placed at strategic locations along the fibre to construct a quasi-distributed measurement. Distributed sensing uses the fibre-optical cable to monitor strain across the entire length of the structure under investigation [ 11 , 12 , 13 , 14 , 15 ].…”

Section: Optical Fibre Devices For Strain Sensingmentioning

confidence: 99%

Fibre Bragg Grating Based Strain Sensors: Review of Technology and Applications

Campanella

Cuccovillo²,

Yurt³

et al. 2018

Sensors

356

185

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Fibre Bragg grating (FBG) strain sensors are not only a very well-established research field, but they are also acquiring a bigger market share due to their sensitivity and low costs. In this paper we review FBG strain sensors with high focus on the underlying physical principles, the interrogation, and the read-out techniques. Particular emphasis is given to recent advances in highly-performing, single head FBG, a category FBG strain sensors belong to. Different sensing schemes are described, including FBG strain sensors based on mode splitting. Their operation principle and performance are reported and compared with the conventional architectures. In conclusion, some advanced applications and key sectors the global fibre-optic strain sensors market are envisaged, as well as the main market players acting in this field.

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Section: Optical Fibre Devices For Strain Sensingmentioning

confidence: 99%

Fibre Bragg Grating Based Strain Sensors: Review of Technology and Applications

Campanella

Cuccovillo²,

Yurt³

et al. 2018

Sensors

356

185

View full text Add to dashboard Cite

show abstract

“…Fiber Bragg grating (FBG) sensors can be used to measure many physical quantities, such as strain, stress, elongation, temperature [ 1 ], and refractive index [ 2 ]. The advantage of optical method based research is the lack of influence on the tested object, the ability to perform non-invasive measurements which can be performed in a wide variety of fields such as mechanical structures diagnostics or even medicine [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

Overhead Transmission Line Sag Estimation Using a Simple Optomechanical System with Chirped Fiber Bragg Gratings. Part 1: Preliminary Measurements

Wydra

Kisała

Harasim

et al. 2018

Sensors

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A method of measuring the power line wire sag using optical sensors that are insensitive to high electromagnetic fields was proposed. The advantage of this technique is that it is a non-invasive measurement of power line wire elongation using a unique optomechanical system. The proposed method replaces the sag of the power line wire with an extension of the control sample and then an expansion of the attached chirped fiber Bragg grating. This paper presents the results of the first measurements made on real aluminum-conducting steel-reinforced wire, frequently used for power line construction. It has been shown that the proper selection of the CFBG (chirped fiber Bragg grating) transducer and the appropriate choice of optical parameters of such a sensor will allow for high sensitivity of the line wire elongation and sag while reducing the sensitivity to the temperature. It has been shown that with a simple optomechanical system, a non-invasive measurement of the power line wire sag that is insensitive to temperature changes and the influence of high electromagnetic fields can be achieved.

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“…Fiber Bragg grating (FBG) sensors have been recognized and applied in structural health monitoring (SHM), such as in the concrete structure of large dams, nuclear power stations, offshore platforms, and so on [ 3 ], due to the following distinguishing advantages of FBG sensors: small size, corrosion resistance, electromagnetic resistance, multiplexing, etc. [ 4 ]. It is considered to be one of the most promising sensors in monitoring the stress-strain distribution around the crack tip for the prognosis of crack propagation [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Investigation on Characteristic Variation of the FBG Spectrum with Crack Propagation in Aluminum Plate Structures

et al. 2017

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In order to monitor the crack tip propagation of aluminum alloy, this study investigates the variation of the spectrum characteristics of a fiber Bragg grating (FBG), combined with an analysis of the spectrum simulation. The results identify the location of the subordinate peak as significantly associated with the strain distribution along the grating, corresponding to the different plastic zones ahead of the crack tip with various crack lengths. FBG sensors could observe monotonic and cyclic plastic zones ahead of the crack tip, with the quadratic strain distribution along the grating at the crack tip-FBG distance of 1.2 and 0.7 mm, respectively. FBG sensors could examine the process zones ahead of the crack tip with the cubic strain distribution along the grating at the crack tip-FBG distance of 0.5 mm. The spectrum oscillation occurs as the crack approaches the FBG where the highly heterogeneous strain is distributed. Another idea is to use a finite element method (FEM), together with a T-matrix method, to analyze the reflection intensity spectra of FBG sensors for various crack sizes. The described crack propagation detection system may apply in structural health monitoring.

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Inverse problem of determining periodic surface profile oscillation defects of steel materials with a fiber Bragg grating sensor

Cited by 28 publications

References 55 publications

Fibre Bragg Grating Based Strain Sensors: Review of Technology and Applications

Fibre Bragg Grating Based Strain Sensors: Review of Technology and Applications

Overhead Transmission Line Sag Estimation Using a Simple Optomechanical System with Chirped Fiber Bragg Gratings. Part 1: Preliminary Measurements

Investigation on Characteristic Variation of the FBG Spectrum with Crack Propagation in Aluminum Plate Structures

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