A Review on Inspection and Maintenance of FRP Structures

Vishwanath, Rakshith; Rohit, Benjamin

doi:10.1088/1757-899x/520/1/012003

Cited by 2 publications

(1 citation statement)

References 14 publications

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“…Structural health monitoring (SHM) is an emerging technology developed from nondestructive monitoring technology (NDT). SHM combines advanced sensor and algorithm technologies to monitor structural health, and it improves reliability and safety, reduces life cycle costs, and aids the design of composite materials [3,4] Piezoelectric materials are widely used in sensors and actuators and for energy harvesting because of the electromechanical coupling characteristics of the piezoelectric effect [5][6][7][8]. Common piezoelectric materials include lead zirconate titanate, barium titanate, and polyvinylidene fluoride (PVDF) [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Electrospun Polyvinylidene Fluoride Piezoelectric Fiber Glass/Carbon Hybrid Self-Sensing Composites for Structural Health Monitoring

Cheng

Huang

2023

Sensors

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In this study, a polyvinylidene fluoride (PVDF)/graphene nanoplatelet (GNP) micro-nanocomposite membrane was fabricated through electrospinning technology and was employed in the fabrication of a fiber-reinforced polymer composite laminate. Some glass fibers were replaced with carbon fibers to serve as electrodes in the sensing layer, and the PVDF/GNP micro-nanocomposite membrane was embedded in the laminate to confer multifunctional piezoelectric self-sensing ability. The self-sensing composite laminate has both favorable mechanical properties and sensing ability. The effects of different concentrations of modified multiwalled carbon nanotubes (CNTs) and GNPs on the morphology of PVDF fibers and the β-phase content of the membrane were investigated. PVDF fibers containing 0.05% GNPs were the most stable and had the highest relative β-phase content; these fibers were embedded in glass fiber fabric to prepare the piezoelectric self-sensing composite laminate. To test the laminate’s practical application, four-point bending and low-velocity impact tests were performed. The results revealed that when damage occurred during bending, the piezoelectric response changed, confirming that the piezoelectric self-sensing composite laminate has preliminary sensing performance. The low-velocity impact experiment revealed the effect of impact energy on sensing performance.

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