Strain-sensitive Raman spectroscopy and electrical resistance of carbon nanotube-coated glass fibre sensors

Liu, Li; Cheng, Po-Tai; Xu, Miao Hua; Khan, Shafi Ullah; Kim, Jang Kyo

doi:10.1016/j.compscitech.2012.06.002

Cited by 27 publications

(13 citation statements)

References 29 publications

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“…To quantify the total strain development in the laminate when exposed to UV irradiation, the total strain expression in equation (19) can be represented by equation (22) "…”

Section: Property Mapping With Strainmentioning

confidence: 99%

“…Some alterations in surface property of glass fibers are essential to apply this spectroscopy method. 19 However, fiber Bragg grating (FBG) sensor is considered as one of the most promising sensing tool for measuring strain, temperature and other quantities of interest during the manufacturing of all types of FRP products and at its service condition. 20 It possesses many advantages over the conventional strain and temperature sensors, which includes its resistance to corrosion, versatility in sensing length, insensitivity to fluctuations of power sources and immunity to electromagnetic perturbations.…”

Section: Introductionmentioning

confidence: 99%

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Ultra-violet health monitoring of smart composite laminate using embedded fiber Bragg grating sensors

Mohanta

Padarthi

Chokkapu

et al. 2020

Journal of Composite Materials

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A novel approach is developed to evaluate the property retention on prolonged ultra-violet exposure and hence, health monitoring of glass fiber reinforced polymer composite laminate. This is achieved in a non-destructive manner by mapping the strength retention with the established strain. Embedded fiber Bragg grating sensor and strain gauges are employed to monitor the strain evolution within the laminate. Tensile and flexural tests are conducted at regular intervals to estimate the mechanical strength retention with varying duration of ultra-violet exposure. Through this analysis, it is observed that the property degradation mechanism follows the first-order reaction kinetics. The degradation of matrix material along with the stress relaxation over time develops the stress–strain fields near the interfaces of matrix and fiber. Moreover, the established strain is interpreted by formulating the model that considers the unifying influence of stress relaxation and chemical degradation. This model has closely (R2 = 0.9810 and 0.9790) predicted the experimental data of strain than the existing ones (R2 = 0.9142 and 0.9119). Besides, property retention is mapped with the predicted strain. More importantly, FESEM and FTIR confirm the fact that ultra-violet radiation degrades the matrix material, and thus the mechanical property gets significantly deteriorated. This suggests that the strain measurement is an effective, non-destructive and health monitoring technique to assess the property degradation of the manufactured glass fiber reinforced polymer composites.

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“…To quantify the total strain development in the laminate when exposed to UV irradiation, the total strain expression in equation (19) can be represented by equation (22) "…”

Section: Property Mapping With Strainmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ultra-violet health monitoring of smart composite laminate using embedded fiber Bragg grating sensors

Mohanta

Padarthi

Chokkapu

et al. 2020

Journal of Composite Materials

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“…The current interest in multiscale hierarchical composites focuses on their multifunctionality, and in the case of multiwall carbon nanotubes (MWCNTs) their high electrical conductivity is frequently exploited. MWCNTs have been deposited onto glass and carbon fibers by electrophoretic methods [15,16] and by simpler methods such as dipping or immersion in nanotube dispersions [17][18][19]. It has been shown that the deposition of MWCNTs onto engeneering fibers can increase the fiber/matrix interfacial shear strength [20] and delay the onset of microcrack propagation [21].…”

Section: Introductionmentioning

confidence: 99%

Deposition of carbon nanotubes onto aramid fibers using as-received and chemically modified fibers

Rodríguez-Uicab

Avilés

González-Chi

et al. 2016

Applied Surface Science

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Multiwall carbon nanotubes (MWCNTs) oxidized by an acid treatment were deposited on the surface of as-received commercial aramid fibers containing a surface coating ("sizing"), and fibers modified by either a chlorosulfonic treatment or a mixture of nitric and sulfuric acids. The surface of the aramid fiber activated by the chemical treatments presents increasing density of CO, COOH and OH functional groups. However, these chemical treatments reduced the tensile mechanical properties of the fibers, especially when the nitric and sulfuric acid mixture was used. Characterization of the MWCNTs deposited on the fiber surface was conducted by scanning electron microscopy, Raman spectroscopy mapping and X-ray photoelectron spectroscopy. These characterizations showed higher areal concentration and more homogeneous distribution of MWCNTs over the aramid fibers for as-received fibers and for those modified with chlorosulfonic acid, suggesting the existence of interaction between the oxidized MWCNTs and the fiber coating. The electrical resistance of the MWCNT-modified aramid yarns comprising 1000 individual fibers was in the order of M Omega/cm, which renders multifunctional properties.CONACYT-CIAM (Mexico) 188089 CONICYT (Chile) 120003 "Fondo Mixto CONACYT-Gobierno del Estado de Yucatan" 24704

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“…Due to the implemented piezoresistive effect, it is possible to correlate the occurring mechanical deformation with the monitored electrically conductive change [23][24][25][26][27][28][29][30]. The use of carbon nanotubes (CNT) for the nanostructuring of GF results in sensor fibres which are suitable for measuring the interphase deformation in a quantitative manner [27,[31][32][33][34][35]. Furthermore, early stage damage can be predicted by on-line resistance measurements, since the GF interphase fails prior to ultimate structural failure.…”

Section: Introductionmentioning

confidence: 99%

In-Line Nanostructuring of Glass Fibres Using Different Carbon Allotropes for Structural Health Monitoring Application

Müller

Eichhorn

Gohs

et al. 2019

Fibers

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By the in-line nanostructuring of glass fibres (GF) during the glass fibre melt spinning process, the authors achieve an electro-mechanical-response-sensor. The glass fibre interphase was functionalized with different highly electrically conductive carbon allotropes such as carbon nanotubes, graphene nanoplatelets, or conductive carbon black. On-line structural health monitoring is demonstrated in continuous glass fibre-reinforced polypropylene composites during a static or dynamic three-point bending test. The different carbon fillers exhibit qualitative differences in their signal quality and sensitivity due to the differences in the aspect ratio of the nanoparticles, the film homogeneity, and the associated electrically conductive network density in the interphase. The occurrence of irreversible signal changes during dynamic loading may be attributed to filler reorientation processes caused by polymer creeping or to the destruction of the electrically conductive paths due to the presence of cracks in the glass fibre interphase. Further, the authors found that sensor embedding hardly influences the tensile properties of continuous GF reinforced polypropylene (PP) composite.

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Strain-sensitive Raman spectroscopy and electrical resistance of carbon nanotube-coated glass fibre sensors

Cited by 27 publications

References 29 publications

Ultra-violet health monitoring of smart composite laminate using embedded fiber Bragg grating sensors

Ultra-violet health monitoring of smart composite laminate using embedded fiber Bragg grating sensors

Deposition of carbon nanotubes onto aramid fibers using as-received and chemically modified fibers

In-Line Nanostructuring of Glass Fibres Using Different Carbon Allotropes for Structural Health Monitoring Application

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