Carbon nanotubes grown on glass fiber as a strain sensor for real time structural health monitoring

Boehle, Matthew; Jiang, Qiong; Li, Lingchuan; Lagounov, Alexandre; Lafdi, Khalid

doi:10.1080/19475411.2011.651509

Cited by 24 publications

(13 citation statements)

References 14 publications

(12 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is found that there is a good correlation between the measured resistance and the applied load of the embedded tow as seen in Fig. 11, as has similarly been noted for individual fuzzy fibers in terms of a linear piezoresistive response for monotonic tensile loading (Boehle et al, 2012). Fig.…”

Section: Resultssupporting

confidence: 72%

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

View full text Add to dashboard Cite

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.

show abstract

Section: Resultssupporting

confidence: 72%

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

View full text Add to dashboard Cite

show abstract

“…The metallic foil‐type strain gauges have high strain sensitivity (GF ≅ 2) but cannot be embedded into composite materials . In addition, a very large number of sensor nodes are required to detect a small crack or delamination over the whole area of the composite . For real‐time internal strain monitoring and defect detection in composite structures, fiber‐type strain sensors embedded between laminae have been preferred .…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Hybrid Structured MWCNT/UHMWPE Fiber Sensors for Strain Sensing and Load Bearing of Composite Structures

Park

Kim

2019

Adv Materials Technologies

View full text Add to dashboard Cite

In this study, a hybrid (soft and strong) coaxial structured fiber sensor that has high load carrying capacity and high sensing performance for measuring mechanical strain is prepared by using a dry‐jet wet spinning system and simple dip‐coating method. The strong core of the fiber sensor is made of ultrahigh molecular weight polyethylene that has highly oriented molecular structure due to a hot‐stretching process to increase the tensile strength. The soft sheath of the fiber sensor is an electrically conductive layer composed of a multilayer structure with varying concentrations of multiwalled carbon nanotubes and polyurethane layers to enhance the sensing performance. A scanning electron microscope is used to investigate the surface morphology of the fiber sensors. Single filament tensile tests are performed to measure the mechanical properties of the fiber sensors. The signal‐to‐noise ratio, strain sensitivity, repeatability, and degree of hysteresis of the fiber sensors are measured during static and dynamic tensile tests to determine the sensing performance. Experimental results confirm that the hybrid structured fiber sensor shows significantly enhanced mechanical properties due to the control of the hot‐stretching process and significantly enhances sensing performances due to the control of the structural configuration of the conductive layers.

show abstract

“…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

View full text Add to dashboard Cite

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.

show abstract

Carbon nanotubes grown on glass fiber as a strain sensor for real time structural health monitoring

Cited by 24 publications

References 14 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

Preparation and Characterization of Hybrid Structured MWCNT/UHMWPE Fiber Sensors for Strain Sensing and Load Bearing of Composite Structures

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

Contact Info

Product

Resources

About