Simultaneous global and local strain sensing in SWCNT–epoxy composites by Raman and impedance spectroscopy

Vega, A. de la; Kinloch, Ian A.; Young, Robert J.; Bauhofer, W.; Schulte, Karl

doi:10.1016/j.compscitech.2010.11.004

Cited by 71 publications

(30 citation statements)

References 30 publications

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“…Another method focuses on the modification of resin matrices by adding nano or micro scaled particles, such as CNT [16][17][18], carbon black [19,20], PZT [20,21] or Terfenol-D [22][23][24]. These particles allow the detection of internal or external mechanical stress as well as damage within FRP materials.…”

Section: Introductionmentioning

confidence: 99%

Magnetostrictive properties of epoxy resins modified with Terfenol-D particles for detection of internal stress in CFRP. Part 1: Materials and processes

et al. 2012

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Magnetostrictive particles like Terfenol-D are investigated with respect to their ability to detect internal stress, generated in carbon fibre-reinforced polymers (CFRP) in a non-destructive way. The results are presented in two parts. The first part elucidates the ideas for the preparation of dispersions based on these particles with high density in epoxy resins. There is particular focus on the effects of particle size and concentration. Different particle sizes in a range of 0-300 lm are selected by special separation techniques. The particle size distribution is controlled in dry state by laser diffraction method. Changing of the chemical composition, particularly by the oxidation of particles, is analysed by EDX. Use of a magnetic field is identified as a suitable means for the stabilisation of these high-weighted particle fractions dispersed in epoxy resins. The particle size distribution, as well as the alignment of particles, in the cured epoxy resins is investigated by SEM and light microscopy. The second part of the study covers the magnetostrictive properties of the modified epoxy resins which are quantified by the detection of internal stress in CFRP.

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Section: Introductionmentioning

confidence: 99%

Magnetostrictive properties of epoxy resins modified with Terfenol-D particles for detection of internal stress in CFRP. Part 1: Materials and processes

et al. 2012

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“…Debonding at the interface is the dominating mechanism of adhesion loss, accompanied by SWCNT pull-out at larger applied strain. 30,32,33 The G-band shift analysis of the 15 layer assembly shows linear curve with higher initial band shift rate value (À3.25 cm À1 /%) in comparison to 30 layer assembly (À2 cm À1 /%). Similarly, initial 2D-band shift rate for 15 layer assembly (À8.7 cm À1 /%) is higher compared to that of 30 layer assembly (À6.8 cm À1 /%).…”

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confidence: 95%

Near-infrared fluorescent single walled carbon nanotube-chitosan composite: Interfacial strain transfer efficiency assessment

et al. 2013

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“…Moreover, the electrical conductivity of interconnected carbon–based networks may be changed by a gas, which changes a contact resistance of the structure of the junction . These structures also simultaneously detect deformation or stress stimulus in elongation or compression, which was found to be sensitive and reversible with sufficient durability in the dynamic loadings measured by a macroscopic electrical resistance change. The electrically conductive carbon allotrope/polymer composites possess thermoelectric properties .…”

Section: Introductionmentioning

confidence: 99%

Multifunctional flexible and stretchable polyurethane/carbon nanotube strain sensor for human breath monitoring

Slobodian

Danova

Olejník

et al. 2019

Polymers for Advanced Techs

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Flexible and stretchable polyurethane/carbon nanotube composite with strain detection ability was used for human breath monitoring. The composite material consisted of a network of multiwalled carbon nanotubes and thermoplastic high elastic polyurethane. It was found that elongation of the composite led to a macroscopic increase in electrical resistance, which can be used as a principle for applied strain detection. This detection was reversible, durable, and sensitive with gauge factor reaching very promising value, as, for example, ~46 at applied deformation of 8.7%. Further, the composite could be elongated to very large extend of deformation without discontinuity in measured resistance change reaching gauge factor ~ 450 at composite mechanical break at ~300% of strain. Sensor durability was also confirmed by sine wave deformation cycling when any decrease in the sensor properties for more than 103 cycles was observed. Simultaneously, the prepared composite possessed other utility properties also and was considered as multifunctional when it was tested as an organic solvent vapor sensor, an element for Joule heating and finally as a microstrip antenna.

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Simultaneous global and local strain sensing in SWCNT–epoxy composites by Raman and impedance spectroscopy

Cited by 71 publications

References 30 publications

Magnetostrictive properties of epoxy resins modified with Terfenol-D particles for detection of internal stress in CFRP. Part 1: Materials and processes

Magnetostrictive properties of epoxy resins modified with Terfenol-D particles for detection of internal stress in CFRP. Part 1: Materials and processes

Near-infrared fluorescent single walled carbon nanotube-chitosan composite: Interfacial strain transfer efficiency assessment

Multifunctional flexible and stretchable polyurethane/carbon nanotube strain sensor for human breath monitoring

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