IN-SITU DYNAMIC STRAIN SENSING USING MECHANIZED AIR-ATOMIZED SPRAYED FLEXIBLE NANOCOMPOSITE SENSORS

Nanocomposites are gaining popularity in the field of structural health monitoring due to their ability to sense structural dynamic strain. This paper introduces a breed of flexible nanocomposite sensors manufactured by mechanized air-atomized spray coating process. The employed method not only enables the automation and continuous production of nanocomposite coatings, raising efficiency in production, but also allows for precise control of spraying parameters to reduce the impact of human factors, ensuring coating uniformity and quality. Flexible nanocomposite sensors are fabricated by doping carbon black nanoparticles in polyvinylpyrrolidone powder with the mechanized air-atomized spray coating process. Experimental results indicate that the flexible nanocomposite sensors can effectively respond to vibration-induced dynamic strain. The flexibility and sensitivity of these sensors make them promising for use in various structural health monitoring applications.