Dynamic response measurement of offshore platform model by FBG sensors

Sun, Li; Li, Hong‐Nan; Ren, Liang; Qiao, Juan

doi:10.1016/j.sna.2006.12.012

Cited by 37 publications

(23 citation statements)

References 12 publications

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“…Numerous researchers have conducted research on FBG strain sensors and its applications in the field of health monitoring in various civil structures. [48][49][50][51][52][53][54][55][56][57][58][59] Considering the applications of FBG sensors in building structures, it should be noted that only few researchers have explored the use of FBG sensors to date. In this regard, one of the prominent research over the use of FBG sensors in building structures to monitor the wind response is made by Ni et al 60 where the use of massive deployment of FBG sensors in Canton tower, China, for temperature and strain monitoring has been demonstrated.…”

Section: Introductionmentioning

confidence: 99%

Fibre Bragg grating sensor-based damage response monitoring of an asymmetric reinforced concrete shear wall structure subjected to progressive seismic loads

Zhang

Alam

Sun

et al. 2018

Struct Control Health Monit

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Summary This research explores the seismic damage response of a frame–shear wall reinforced concrete structure exposed to progressive seismic excitations. The shear wall structure is a three‐storey one‐quarter‐scaled reinforced concrete structure. The test was conducted by applying progressive seismic excitations using a shaking table. The shear wall structure experienced inelastic deformations under high seismic excitations that eventually caused the transformation of the structure from a state of elastic deformation to a state of highly inelastic deformation. Damage in the form of plastic hinges occurred because of induced dynamic instability in the structure. The monitored seismic responses in this research includes the variation in the residual strains and their dynamic time histories. Precise and detailed measurements of varying strain responses and effective estimation of damage response within the structure have been a primary goal in this research. Successful implementation of fibre Bragg grating (FBG) strain sensor is presented and applied in this experiment because of its enhanced sensitivity towards monitoring the structural dynamic strain response. The presented research also evaluates the suitability of FBG strain sensors in dynamic testing of a frame–shear wall asymmetric structure by comparing the damage response obtained through FBG sensors and the predictions developed from the dynamic properties of the test structure, monitoring the progress in structural damage and predicting the cracks inside the structure. The monitored responses obtained through a series of tests prove that FBG sensors have the advantages of significant accuracy, small size, and good embedding abilities. It demonstrates its promising failure monitoring abilities and potentials for the crack detection. The results achieved through this research would be beneficial to validate existing numerical simulation and analytical procedures, particularly for the structures with inherent asymmetry. It has been demonstrated in this paper that (a) the structure entered into the critical state when the ground motion excitation was 0.5 g with invisible cracks, (b) a sudden change in the residual strain response can help in detecting the initiation of a crack, and (c) the damages in the structure were due to the formation of the plastic hinges at the flexible edge of the structure near the beam–column joints.

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Section: Introductionmentioning

confidence: 99%

Fibre Bragg grating sensor-based damage response monitoring of an asymmetric reinforced concrete shear wall structure subjected to progressive seismic loads

Zhang

Alam

Sun

et al. 2018

Struct Control Health Monit

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“…In this system, a laser diode which has a narrow spectrum of wavelength was set to approach Bragg wavelength. Mathematical description of the FBG principle can be written as follows: where is Bragg wavelength, is effective refractive index and is periode grattings of FBG [8,[11][12][13]. If the grating period FBG is changed due to dynamic strain from outside, the Bragg wavelength also changes.…”

Section: Introductionmentioning

confidence: 99%

Improving frequencies range measurement of vibration sensor based on Fiber Bragg Grating (FBG)

Qomaruddin

Setiono

Afandi

2017

J. Phys.: Conf. Ser.

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Abstract. This research aimed to develop a vibration sensor based on Fiber Bragg Grating (FBG). The design was mainly done by attaching FBG at the cantilever. The free-end of the cantilever was tied to a vibration source in order to increase the measurement range of vibration frequencies. The results indicated that the developed sensor was capable of detecting wide range of frequencies (i.e. 10 -1700 Hz). The results also showed both good stability and repeatability. The measured frequency range was 566 times greater than the range obtained from the previous works.

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“…FBG sensors are also applied to large-scale electric power generators for vibration and temperature monitoring, analysis and alarming. In the oil and gas sector, they are used for down-hole pressure and temperature monitoring as well as for offshore platform monitoring [18]. FBG sensors have also been used as alternative for electrical strain gauges during vibration environmental testing of light-weight space structures [19].…”

Section: Introductionmentioning

confidence: 99%

On the use of optical fiber Bragg grating (FBG) sensor technology for strain modal analysis

Peeters¹,

Santos²,

Pereira³

et al. 2014

AIP Conference Proceedings

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Articles you may be interested in High resolution interrogation system for fiber Bragg grating (FBG) sensor application using radio frequency spectrum analyser AIP Conf. Dual temperature and strain sensor using a combined fiber Bragg grating and fluorescence intensity ratio technique in Er 3+ -doped fiber Rev. Sci. Instrum. 74, 2880 (2003); 10.1063/1.1569406 Fiber optic sensor for dual measurement of temperature and strain using a combined fluorescence lifetime decay and fiber Bragg grating technique Rev. Sci. Instrum. 72, 3186 (2001);Abstract. This paper discusses the use of optical fiber Bragg grating (FBG) strain sensors for structural dynamics measurements. For certain industrial applications, there is an interest to use strain sensors rather than or in combination with accelerometers for experimental modal analysis. Classical electrical strain gauges can be used hereto, but optical strain sensors are an interesting alternative with some very specific advantages. This paper gives an overview of dynamic strain measurements in industrial applications, discusses the benefits of FBG sensors and reviews their measurement principle. Finally, the concept of strain modal analysis is introduced and a helicopter main rotor blade vibration testing and analysis case study is presented.

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Dynamic response measurement of offshore platform model by FBG sensors

Cited by 37 publications

References 12 publications

Fibre Bragg grating sensor-based damage response monitoring of an asymmetric reinforced concrete shear wall structure subjected to progressive seismic loads

Fibre Bragg grating sensor-based damage response monitoring of an asymmetric reinforced concrete shear wall structure subjected to progressive seismic loads

Improving frequencies range measurement of vibration sensor based on Fiber Bragg Grating (FBG)

On the use of optical fiber Bragg grating (FBG) sensor technology for strain modal analysis

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