Aligned Carbon Nanotube-Based Sensors for Strain Monitoring of Composites

Santos, A.; Amorim, Luís Manuel Machado; Nunes, João Arriscado; Silva, Alexandre F.; Viana, J. C.

doi:10.1109/jsen.2021.3070927

Cited by 4 publications

(2 citation statements)

References 25 publications

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“…Other promising trends, applicable in the vibration-based monitoring even of SSDs, are evident and can be founded from the study of Giannelli et al in 2017 [50] and Santos et al in 2021 [51], respectively. [50] underlines a significant leap towards multifunctionality and integration within SHM technologies.…”

Section: Emerging Trends and Future Directionsmentioning

confidence: 98%

“…Meanwhile, an aligned carbon nanotube sensors, representing a cutting-edge technology for precise strain monitoring in composites was introduced by [51]. From their study, which is distinct from vibration-based SHM, the potential applications of advanced sensors in SHM indicate an emerging trend toward more accurate and specialized monitoring solutions is achievable.…”

Section: Emerging Trends and Future Directionsmentioning

confidence: 99%

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A Review on the Latest Advancements and Innovation Trends in Vibration-Based Structural Health Monitoring (SHM) Techniques for Improved Maintenance of Steel Slit Damper (SSD)

Payawal,

Kim

2024

IEEE Access

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Steel slit damper (SSD) is specifically engineered to absorb and disperse energy to mitigate the possibility of structural damage and collapse during seismic events. However, the effectiveness of these dampers are compromised due to wear, corrosion and other forms of material degradation and failure mechanisms. For this reason, it is important to consistently monitor its condition and conduct maintenance and repairs to guarantee safety and dependability of the structures it is installed with. Now, vibration-based techniques have emerged as a promising structural health monitoring (SHM) strategy. It involves methodologies for detecting changes in functions and analyzing vibrations to discover potential problems. This study entails a comprehensive examination of the most recent advancements and breakthroughs in vibration-based methodologies used in SHM. Using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA 2020), we identified several key techniques and technologies that show promise in enhancing the maintenance and monitoring of steel -or steel and metal surfaces-slit dampers. The pros and cons of these methods are presented to be applicable when monitoring an SSD. This paper presents notable figures and their corresponding discussions to achieve enhanced understanding of the advancements in SHM towards sensor technologies, monitoring techniques, and applications in civil infrastructure. Furthermore, this paper reviews the applications and functions framework for real-time SHM of SSDs together with their practical implementations and applications using diverse monitoring technologies to promote innovation. Finally, the optimal sensor selection criteria, data gathering methodologies, experimental settings, innovative approaches with comparative analyses, and a proposed maintenance standard for SSDs are described in this study. INDEX TERMSSteel slit damper, structural health monitoring, vibration-based techniques, PRISMA 2020.

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Section: Emerging Trends and Future Directionsmentioning

confidence: 98%

Section: Emerging Trends and Future Directionsmentioning

confidence: 99%

A Review on the Latest Advancements and Innovation Trends in Vibration-Based Structural Health Monitoring (SHM) Techniques for Improved Maintenance of Steel Slit Damper (SSD)

Payawal,

Kim

2024

IEEE Access

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Nano‐particles doped carbon nanotube films for in‐situ monitoring of temperature and strain during the processing of carbon fiber/epoxy composites

Xing,

He,

Wang

et al. 2024

Polymer Composites

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Carbon nanotube (CNT) film is favored in structural health monitoring of advanced composite materials, primarily due to its commendable mechanical properties and piezoresistive properties. Nonetheless, floating catalytic chemical vapor deposition (FCCVD) is an attractive method for fabrication of CNT films, and the electrical response to strain of FCCVD‐prepared CNT films is impeded by high aspect ratio and lamellar packing structure. For this purpose, FCCVD CNT films were modified by HCl dissolving Fe impurities, nano‐SiO2 particles doping and freeze‐drying in combination to increase the spacing between CNTs and its networks as well as their strain sensitivities. It showed that the gauge factor (GF) according to the variation of resistance (ΔR/R0) of the co‐modified film (CNT‐HCl‐SiO2 film) was up to 15.6 for the tensile strain at the bottom surface of unidirectional carbon fiber reinforced plastic (CFRP) laminates during the process of bending tests. The bending cycle experiment of the CFRP showed relatively stable changes of ΔR/R0 with the strains for CNT‐HCl‐SiO2 film, while that of the pristine CNT film (CNT‐HCl‐0 film) displayed unstable non‐monotonic changes and that of HCl purified CNT film (CNT‐HCl‐10 film) revealed a gradual declining tendency. Moreover, the ΔR/R0 of CNT‐HCl‐SiO2 film exhibited excellent sensitivity to the strains of multiple bistable‐deformations of cross‐ply CFRP laminates. Strain gauge analysis indicated that a 51% increase of ΔR/R0 of CNT‐HCl‐SiO2 film at the 90° layer surface corresponded to the average strain of 434 με, meanwhile a 37% increase of ΔR/R0 of the CNT film at the 0° layer surface corresponded to the strain of averagely −173.9 με, and both exhibited super high GFs of 1175 and 2108, respectively. Based on this high sensitivity, CNT‐HCl‐SiO2 film also had the ability to predict the release of residual stress during the demoulding process of CFRP.Highlights Even SiO2 dispersion in CNT film, increased the pristine film thickness by 10 times GF of CNT‐HCl‐SiO2 film increased by 68% than CNT‐HCl‐0 film and by 164% than CNT‐HCl‐10 film SiO2 doping significantly improved the stability of the CNT film's ΔR/R0 with temperature and strain CNT‐HCl‐SiO2 film has the ability to monitor the deformation and residual stress of CFRP

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A hybrid computational scheme on electromechanically coupled behaviors of aligned MWCNT/polymer nanocomposite sensors with strain-dependent tunneling effect

Xia,

Niekamp,

Brands

et al. 2023

Arch Appl Mech

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Aligned Carbon Nanotube-Based Sensors for Strain Monitoring of Composites

Cited by 4 publications

References 25 publications

A Review on the Latest Advancements and Innovation Trends in Vibration-Based Structural Health Monitoring (SHM) Techniques for Improved Maintenance of Steel Slit Damper (SSD)

A Review on the Latest Advancements and Innovation Trends in Vibration-Based Structural Health Monitoring (SHM) Techniques for Improved Maintenance of Steel Slit Damper (SSD)

Nano‐particles doped carbon nanotube films for in‐situ monitoring of temperature and strain during the processing of carbon fiber/epoxy composites

A hybrid computational scheme on electromechanically coupled behaviors of aligned MWCNT/polymer nanocomposite sensors with strain-dependent tunneling effect

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