Health monitoring of structural composites with embedded carbon nanotube coated glass fiber sensors

Sebastian, James; Schehl, Norman; Bouchard, Michael; Boehle, Matthew; Li, Lingchuan; Lagounov, Alexandre; Lafdi, Khalid

doi:10.1016/j.carbon.2013.08.058

Cited by 185 publications

(104 citation statements)

References 30 publications

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“…The fuzzy fiber material (Bower et al, 2000;Thostenson et al, 2002;Zhu et al, 2003;Zhang et al, 2005;Ci et al, 2005;Mathur et al, 2008;Garcia et al, 2008;Sager et al, 2009;Yamamoto et al, 2009Yamamoto et al, , 2012Wood et al, 2012;Sebastian et al, 2014) is an engineering material that has a carbon, glass, ceramic, or alumina structural fiber core, with dense CNT ''forest'' coated on the fiber surface, as observed in Fig. 1.…”

Section: Introductionmentioning

confidence: 93%

“…It is found that the fuzzy fiber sensors with a gauge factor of 1.6-2.3, which is similar to conventional strain gauges, can provide sensing over large sections and in locations not accessible to conventional strain gauging techniques. The multi-functionality of the interphase region makes FFRPC good candidates for multifunctional applications such as structural health monitoring, electromagnetic shielding, fire resisting and deicing (Yamamoto et al, 2012;Sebastian et al, 2014). In this paper we are focused on modeling and characterization of the piezoresistive response of FFRPC, which is believed to be governed by the piezoresistive response of the nanocomposite interphase.…”

Section: Introductionmentioning

confidence: 99%

“…It is measured that FFRPC with alumina-fiber cores have a high electrical conductivity of >100 S/m and an enhancement of thermal conductivity ($1 W/m K) (Yamamoto et al, 2012). Sebastian et al (2014) integrated fuzzy fiber sensors into composite structures to explore their internal sensing abilities. It is found that the fuzzy fiber sensors with a gauge factor of 1.6-2.3, which is similar to conventional strain gauges, can provide sensing over large sections and in locations not accessible to conventional strain gauging techniques.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Computational multiscale modeling and characterization of piezoresistivity in fuzzy fiber reinforced polymer composites

Ren

Burton

Seidel

et al. 2015

International Journal of Solids and Structures

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a b s t r a c tIn this paper, the piezoresistive response (i.e. the change of resistance under the application of strain) of polymer composites reinforced by a novel material known as fuzzy fibers is characterized by using single tow piezoresistive fragmentation tests and modeled by using a 3D computational multiscale model based on the finite element analysis. In the characterization work, the fuzzy fiber tow is embedded in a dogbone specimen infused by epoxy, with resistance and displacement measured simultaneously to obtain its piezoresistive response. An approximately linear and stable piezoresistive response is observed within the fuzzy fiber tow region yielding gauge factors on average of 0.14. Using a 3D multiscale mechanicalelectrostatic coupled code and explicitly accounting for the local piezoresistive response of the anisotropic interphase region, the piezoresistive responses of the overall fuzzy fiber reinforced polymer composites are studied parametrically in an effort to provide qualitative guidance for the manufacture of fuzzy fiber reinforced polymer composites. It is observed from the model that the fuzzy fiber reinforced polymer composites with cylindrically orthotropic carbon nanotube interphase regions are dominated by the electrical tunneling effect between the nanotubes and can yield very large gauge factors while fuzzy fibers with randomly oriented carbon nanotubes in the interphase region yield smaller gauge factors as the material is electrically saturated by the carbon nanotubes. Finally, the modeling efforts provide plausible reasons for the observed small gauge factors in experiments in the form of a combination of high concentration randomly oriented carbon nanotube interphase regions separated by sparse nanotube regions along the fuzzy fiber length.

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Section: Introductionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Computational multiscale modeling and characterization of piezoresistivity in fuzzy fiber reinforced polymer composites

Ren

Burton

Seidel

et al. 2015

International Journal of Solids and Structures

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“…As the CNT network is strained the distance between individual CNTs changes and, as a result, the overall conductivity of the CNT network changes due to the changing CNT-CNT contact resistance. Thus, an in situ strain sensor can be integrated in a composite by dispersing CNTs in the polymer matrix of a fiber-reinforced composite [14][15][16][17]. CNT-based sensing can also be used for self-damage detection in a CNT-infused composite layer [18].…”

Section: Introductionmentioning

confidence: 99%

Novel self-sensing carbon nanotube-based composites for rehabilitation of structural steel members

Ahmed¹,

Doshi²,

Schumacher³

et al. 2016

AIP Conference Proceedings

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“…[10] Another motivation for including CNTs in composites is to create a conductive network which can be used for in-situ damage detection. [11,12] Mechanical properties of CFRCs, and hierarchical composites, are primarily determined by fiber volume fractions; grafting long CNTs onto the fiber surfaces increase fiber-fiber separation [13] resulting in a reduced fiber packing. An "ideal" perpendicular CNT grafting length can therefore be suggested, which does not affect the fiber volume fraction ( Figure 1 and supplementary information (SI) S1).…”

Section: Introductionmentioning

confidence: 99%

Continuous carbon nanotube synthesis on charged carbon fibers

Anthony

Sui

Kellersztein

et al. 2018

Composites Part A: Applied Science and Manufacturing

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Carbon nanotube grafted carbon fibers (CNT-g-CFs) were prepared continuously, spool to spool, via thermal CVD. The application of an in-situ potential difference (300 V), between the fibers and a cylindrical graphite foil counter electrode, enhanced the growth, producing a uniform coverage of carbon nanotubes with diameter ca. 10 nm and length ca. 125 nm. Single fiber tensile tests show that this approach avoids the significant reduction of the underlying carbon fiber strengths, which is usually associated with CVD grafting processes. Single fiber fragmentation tests in epoxy, with in-situ video fragment detection, demonstrated that the CNT-g-CFs have the highest interfacial shear strength reported for such systems (101 ± 5 MPa), comparable to state-of-the-art sizing controls (103 ± 8 MPa).Single fiber pull-out data show similar trends. The short length of the grafted CNTs is particularly attractive for retaining the volume fraction of the primary fibers in composite applications.

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Health monitoring of structural composites with embedded carbon nanotube coated glass fiber sensors

Cited by 185 publications

References 30 publications

Computational multiscale modeling and characterization of piezoresistivity in fuzzy fiber reinforced polymer composites

Computational multiscale modeling and characterization of piezoresistivity in fuzzy fiber reinforced polymer composites

Novel self-sensing carbon nanotube-based composites for rehabilitation of structural steel members

Continuous carbon nanotube synthesis on charged carbon fibers

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