Impact paint sensor based on polymer/multi-dimension carbon nano isotopes composites

Kim, Sung Yong; Choi, Baek Gyu; Baek, Woon Kyung; Park, Se Hoon; Shin, Jeong Woo; Kang, Inpil

doi:10.1088/1361-665x/aafbd9

Cited by 10 publications

(7 citation statements)

References 47 publications

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“…A noisy response has been reported for NCPC due to a resistance drift of the composite resistance originating from the inherent electrical changing properties of CNTs based on the surrounding environment [ 31 ]. However, the electrical signal stability of PLC with NCSS is sufficient for engineering applications, as we reported previously [ 18 , 19 ]. The response times of the two load cells, presented in Figure 7 b, were nearly identical.…”

Section: Experimental 3d-printed Load Cell Sensing Characteristicsmentioning

confidence: 78%

“…When a nanocarbon-based composite is deformed, the composite’s electrical properties change due to internal conductive conditions in the process of piezoresistivity. Therefore, we developed nanocarbon composite strain sensors (NCSS) using a nanocarbon piezoresistive composite (NCPC), which showed similar performance to commercial foil strain gauges [ 18 , 19 ]. Under compression loading, NCPC internal nanofillers move closer to each other and thus increase their electrical conductivity, thereby reducing the electrical resistance of the NCPC.…”

Section: Introductionmentioning

confidence: 99%

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3D-Printed Load Cell Using Nanocarbon Composite Strain Sensor

Joung

Kim

Kang

et al. 2021

Sensors

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The development of a 3D-Printed Load Cell (PLC) was studied using a nanocarbon composite strain sensor (NCSS) and a 3D printing process. The miniature load cell was fabricated using a low-cost LCD-based 3D printer with UV resin. The NCSS composed of 0.5 wt% MWCNT/epoxy was used to create the flexure of PLC. PLC performance was evaluated under a rated load range; its output was equal to the common value of 2 mV/V. The performance was also evaluated after a calibration in terms of non-linearity, repeatability, and hysteresis, with final results of 2.12%, 1.60%, and 4.42%, respectively. Creep and creep recovery were found to be 1.68 (%FS) and 4.16 (%FS). The relative inferiorities of PLC seem to originate from the inherent hyper-elastic characteristics of polymer sensors. The 3D PLC developed may be a promising solution for the OEM/design-in load cell market and may also result in the development of a novel 3D-printed sensor.

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Section: Experimental 3d-printed Load Cell Sensing Characteristicsmentioning

confidence: 78%

Section: Introductionmentioning

confidence: 99%

3D-Printed Load Cell Using Nanocarbon Composite Strain Sensor

Joung

Kim

Kang

et al. 2021

Sensors

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“…However, their results do not match the experimental results already reported in the literature. Further, a hybrid working mechanism of a strain sensor was reported by Kim et al The resistance of the sensor made of hybrid composite with multiwall carbon nanotubes (MWCNT) and exfoliated graphene nano-platelets (XGnP) varies due to both contact area and tunneling effect mechanism [47].…”

Section: Resultsmentioning

confidence: 99%

Highly sensitive, scalable reduced graphene oxide with palladium nano-composite as strain sensor

et al. 2019

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We report a novel strain sensor based on reduced graphene oxide (rGO) with palladium (Pd) nano-composite. The sensor was fabricated on the SS304 stainless-steel substrate using a screen-printing method. Graphene oxide was synthesized using a modified Hummer’s method and reduced using a chemical route. Field emission-scanning electron microscope, x-ray diffraction and Raman spectroscopy were used to characterize the as-synthesized nano-composite. The as-fabricated strain sensor was tested for tensile strain using Micro-universal Test Machine and the change in resistance for different strains was recorded. The sensor response was observed to be stable and linear within the applied strain range of 0–3000 microstrains, and an average gauge factor of 42.69 was obtained in this range.

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“…A wide variety of nano-C have been used for piezoresistive sensors, as well as a range of host polymers, as shown in Table 1. Composites with carbon nanotubes (CNTs) 3,8,10,[17][18][19][20][21][22] and porous nano-C black 23 have the lowest loadings, from 0.7 to 3 wt%. However, the GFs of CNT strain sensors have typically been relatively small, ranging from 1 to 5, with the exception of one material at 78.…”

Section: Introductionmentioning

confidence: 99%

Fabrication, characterization, and repair of nanocarbon-loaded aircraft paint-based sensors for real-world SHM: studies at the laboratory scale

Cuellar,

Watson,

Smela

2023

Structural Health Monitoring

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There has been considerable interest in piezoresistive nanocarbon-loaded polymer films for structural health monitoring, including damage detection and strain monitoring. While good performance has been demonstrated, issues related to practical implementation have received less attention. Here we present sensors made from exfoliated graphite nanoplatelets (xGnP) incorporated into a commercial paint that is applied to Sikorsky aircraft. A formulation and a fabrication method are developed that deliver high piezoresistive strain sensitivity alongside mechanical integrity. At approximately 7 wt% xGnP, the gauge factor in tension is in the range of 30–55, and the effectiveness of the sensors for damage monitoring is demonstrated by the detection of perforations. To obtain a paintable solution, key considerations in choosing the solvent employed for introducing the nanocarbon are compatibility and the ability to keep the nanocarbon suspended, which is achieved using ethyl acetate. The ability to form sensors in situ on aircraft structures requires an uncomplicated method of making robust electrical connections, which is demonstrated here using embedded copper mesh. The strong, often nonlinear, environmental sensitivity of polymer-nanocarbon materials must also be considered in applications; here, increasing temperature and humidity both raise sensor resistance. This work shows that a second, unstrained reference sensor would work well for automatic compensation. Lastly, a method for effecting a repair that employs standard processes and maintains the high gauge factor is demonstrated. With these advances, the paint-xGnP sensors are ready for in-the-field testing on aircraft.

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Impact paint sensor based on polymer/multi-dimension carbon nano isotopes composites

Cited by 10 publications

References 47 publications

3D-Printed Load Cell Using Nanocarbon Composite Strain Sensor

3D-Printed Load Cell Using Nanocarbon Composite Strain Sensor

Highly sensitive, scalable reduced graphene oxide with palladium nano-composite as strain sensor

Fabrication, characterization, and repair of nanocarbon-loaded aircraft paint-based sensors for real-world SHM: studies at the laboratory scale

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