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<p>This work details the development of smart composites comprising of nanoparticle infused centrifugally spun piezoresistive composite sensors intended for their Structural Health Monitoring. The thermoplastic polyurethane (TPU) solution in dimethyl formamide (DMF) was spun in the form of fibrous webs using custom-built centrifugal spinner. A solution of carbon nanoparticles (CNPs) dispersed in tetrahydrofuran (THF) was then used to dip-coat TPU fibers with CNPs after they had been fabricated through centrifugal spinning. The solution had a concentration of 25% w/v CNPs which led to the formation of piezoresistive fibers with strain-sensing capabilities. The fibers were spun into yarns using a manual twisting tool that imparted 2–3 twists per inch, improving fiber compaction and strain-transfer stability. The sensors were characterized and attached to different composite specimens having widely varying configurations for mechanical testing including tensile testing, three-point flexural testing, and impact testing. The sensor’s exceptional sensitivity enabled it to detect the loads exerted on the composite structures and trace the overall deflection trajectory. The findings indicate that the newly designed composite strain sensors are appropriate for Structural Health Monitoring of Composite Structures.</p>

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Centrifugal Spun Nanoparticle Doped Sensor for Strain and Impact Monitoring Applications

  • 期刊论文

  • 发表日期：

    2026年2月18日

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  • Muhammad Daniyal Hassan,
  • Muhammad Inam Khan,
  • Saad Nauman

摘要

This work details the development of smart composites comprising of nanoparticle infused centrifugally spun piezoresistive composite sensors intended for their Structural Health Monitoring. The thermoplastic polyurethane (TPU) solution in dimethyl formamide (DMF) was spun in the form of fibrous webs using custom-built centrifugal spinner. A solution of carbon nanoparticles (CNPs) dispersed in tetrahydrofuran (THF) was then used to dip-coat TPU fibers with CNPs after they had been fabricated through centrifugal spinning. The solution had a concentration of 25% w/v CNPs which led to the formation of piezoresistive fibers with strain-sensing capabilities. The fibers were spun into yarns using a manual twisting tool that imparted 2–3 twists per inch, improving fiber compaction and strain-transfer stability. The sensors were characterized and attached to different composite specimens having widely varying configurations for mechanical testing including tensile testing, three-point flexural testing, and impact testing. The sensor’s exceptional sensitivity enabled it to detect the loads exerted on the composite structures and trace the overall deflection trajectory. The findings indicate that the newly designed composite strain sensors are appropriate for Structural Health Monitoring of Composite Structures.