Carbon Fiber-Reinforced Piezoelectric Nanocomposites: Design, Fabrication and Evaluation for Damage Detection and Energy Harvesting

Yaonan Yu, Yu Shi*, Hiroki Kurita, Yu Jia, Zhenjin Wang, Fumio Narita

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Carbon fiber-reinforced polymers (CFRPs) can be used in aging infrastructures as a reinforcement because of their excellent mechanical properties, and they can also be used in the support maintenance and repair work of these structures. However, the development of CFRPs as reinforcement while achieving self-powered damage detection is still challenging. Herein, a sodium potassium niobate (KNN) nanoparticle-filled epoxy (KNN–EP) plate was fabricated and combined with advanced CFRP electrodes. The obtained composites exhibited dramatically enhanced mechanical properties. In addition, CFRP contributed to the energy harvesting output (peak-to-peak output voltage Vpp = 7.25 mV), which was over 600 % higher than that of the KNN–EP plate. Thus, this composite could work as a force sensor for damage detection. In the end-notch bending test, the voltage signals generated by CFRP/KNN–EP composite accurately corresponded to the crack growth, which could provide the real-time crack state and prediction of fracture occurrence. Therefore, this work provided a new strategy for structural enhancement and kinetic energy harvesting, which can be used to detect damage behavior in infrastructures.

Original languageEnglish
Article number107587
Pages (from-to)1-15
Number of pages15
JournalComposites Part A: Applied Science and Manufacturing
Early online date22 Apr 2023
Publication statusE-pub ahead of print - 22 Apr 2023

Bibliographical note

Funding Information:
The authors greatly acknowledge the support of this work by the Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (A) under Grant No. 22H00183 and Core-to-Core Program under Grant No. JPJSCCA20200005.

Publisher Copyright:
© 2023 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (


  • Carbon Fiber-Reinforced Polymers Electrode
  • Damage Detection
  • End-Notched Flexure
  • Piezoelectricity


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